Mercurial > hg > nginx
annotate src/http/modules/ngx_http_grpc_module.c @ 7350:67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
If sending request body was not completed (u->request_body_sent is not set),
the upstream keepalive module won't save such a connection. However, it
is theoretically possible (though highly unlikely) that sending of some
control frames can be blocked after the request body was sent. The
ctx->output_blocked flag introduced to disable keepalive in such cases.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 03 Sep 2018 19:34:02 +0300 |
parents | f6047a579ca1 |
children | 8b68d50090e4 |
rev | line source |
---|---|
7233 | 1 |
2 /* | |
3 * Copyright (C) Maxim Dounin | |
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 typedef struct { | |
14 ngx_array_t *flushes; | |
15 ngx_array_t *lengths; | |
16 ngx_array_t *values; | |
17 ngx_hash_t hash; | |
18 } ngx_http_grpc_headers_t; | |
19 | |
20 | |
21 typedef struct { | |
22 ngx_http_upstream_conf_t upstream; | |
23 | |
24 ngx_http_grpc_headers_t headers; | |
25 ngx_array_t *headers_source; | |
26 | |
27 ngx_str_t host; | |
28 ngx_uint_t host_set; | |
29 | |
30 #if (NGX_HTTP_SSL) | |
31 ngx_uint_t ssl; | |
32 ngx_uint_t ssl_protocols; | |
33 ngx_str_t ssl_ciphers; | |
34 ngx_uint_t ssl_verify_depth; | |
35 ngx_str_t ssl_trusted_certificate; | |
36 ngx_str_t ssl_crl; | |
37 ngx_str_t ssl_certificate; | |
38 ngx_str_t ssl_certificate_key; | |
39 ngx_array_t *ssl_passwords; | |
40 #endif | |
41 } ngx_http_grpc_loc_conf_t; | |
42 | |
43 | |
44 typedef enum { | |
45 ngx_http_grpc_st_start = 0, | |
46 ngx_http_grpc_st_length_2, | |
47 ngx_http_grpc_st_length_3, | |
48 ngx_http_grpc_st_type, | |
49 ngx_http_grpc_st_flags, | |
50 ngx_http_grpc_st_stream_id, | |
51 ngx_http_grpc_st_stream_id_2, | |
52 ngx_http_grpc_st_stream_id_3, | |
53 ngx_http_grpc_st_stream_id_4, | |
54 ngx_http_grpc_st_payload, | |
55 ngx_http_grpc_st_padding | |
56 } ngx_http_grpc_state_e; | |
57 | |
58 | |
59 typedef struct { | |
60 size_t init_window; | |
61 size_t send_window; | |
62 size_t recv_window; | |
63 ngx_uint_t last_stream_id; | |
64 } ngx_http_grpc_conn_t; | |
65 | |
66 | |
67 typedef struct { | |
68 ngx_http_grpc_state_e state; | |
69 ngx_uint_t frame_state; | |
70 ngx_uint_t fragment_state; | |
71 | |
72 ngx_chain_t *in; | |
73 ngx_chain_t *out; | |
74 ngx_chain_t *free; | |
75 ngx_chain_t *busy; | |
76 | |
77 ngx_http_grpc_conn_t *connection; | |
78 | |
79 ngx_uint_t id; | |
80 | |
81 ssize_t send_window; | |
82 size_t recv_window; | |
83 | |
84 size_t rest; | |
85 ngx_uint_t stream_id; | |
86 u_char type; | |
87 u_char flags; | |
88 u_char padding; | |
89 | |
90 ngx_uint_t error; | |
91 ngx_uint_t window_update; | |
92 | |
93 ngx_uint_t setting_id; | |
94 ngx_uint_t setting_value; | |
95 | |
96 u_char ping_data[8]; | |
97 | |
98 ngx_uint_t index; | |
99 ngx_str_t name; | |
100 ngx_str_t value; | |
101 | |
102 u_char *field_end; | |
103 size_t field_length; | |
104 size_t field_rest; | |
105 u_char field_state; | |
106 | |
107 unsigned literal:1; | |
108 unsigned field_huffman:1; | |
109 | |
110 unsigned header_sent:1; | |
111 unsigned output_closed:1; | |
7350
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
112 unsigned output_blocked:1; |
7233 | 113 unsigned parsing_headers:1; |
114 unsigned end_stream:1; | |
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
115 unsigned done:1; |
7233 | 116 unsigned status:1; |
117 | |
118 ngx_http_request_t *request; | |
119 } ngx_http_grpc_ctx_t; | |
120 | |
121 | |
122 typedef struct { | |
123 u_char length_0; | |
124 u_char length_1; | |
125 u_char length_2; | |
126 u_char type; | |
127 u_char flags; | |
128 u_char stream_id_0; | |
129 u_char stream_id_1; | |
130 u_char stream_id_2; | |
131 u_char stream_id_3; | |
132 } ngx_http_grpc_frame_t; | |
133 | |
134 | |
135 static ngx_int_t ngx_http_grpc_create_request(ngx_http_request_t *r); | |
136 static ngx_int_t ngx_http_grpc_reinit_request(ngx_http_request_t *r); | |
137 static ngx_int_t ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in); | |
138 static ngx_int_t ngx_http_grpc_process_header(ngx_http_request_t *r); | |
139 static ngx_int_t ngx_http_grpc_filter_init(void *data); | |
140 static ngx_int_t ngx_http_grpc_filter(void *data, ssize_t bytes); | |
141 | |
142 static ngx_int_t ngx_http_grpc_parse_frame(ngx_http_request_t *r, | |
143 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
144 static ngx_int_t ngx_http_grpc_parse_header(ngx_http_request_t *r, | |
145 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
146 static ngx_int_t ngx_http_grpc_parse_fragment(ngx_http_request_t *r, | |
147 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
148 static ngx_int_t ngx_http_grpc_validate_header_name(ngx_http_request_t *r, | |
149 ngx_str_t *s); | |
150 static ngx_int_t ngx_http_grpc_validate_header_value(ngx_http_request_t *r, | |
151 ngx_str_t *s); | |
152 static ngx_int_t ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, | |
153 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
154 static ngx_int_t ngx_http_grpc_parse_goaway(ngx_http_request_t *r, | |
155 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
156 static ngx_int_t ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
157 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
158 static ngx_int_t ngx_http_grpc_parse_settings(ngx_http_request_t *r, | |
159 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
160 static ngx_int_t ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
161 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
162 | |
163 static ngx_int_t ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, | |
164 ngx_http_grpc_ctx_t *ctx); | |
165 static ngx_int_t ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, | |
166 ngx_http_grpc_ctx_t *ctx); | |
167 static ngx_int_t ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
168 ngx_http_grpc_ctx_t *ctx); | |
169 | |
170 static ngx_chain_t *ngx_http_grpc_get_buf(ngx_http_request_t *r, | |
171 ngx_http_grpc_ctx_t *ctx); | |
172 static ngx_http_grpc_ctx_t *ngx_http_grpc_get_ctx(ngx_http_request_t *r); | |
173 static ngx_int_t ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
174 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc); | |
175 static void ngx_http_grpc_cleanup(void *data); | |
176 | |
177 static void ngx_http_grpc_abort_request(ngx_http_request_t *r); | |
178 static void ngx_http_grpc_finalize_request(ngx_http_request_t *r, | |
179 ngx_int_t rc); | |
180 | |
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
181 static ngx_int_t ngx_http_grpc_internal_trailers_variable( |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
182 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
183 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
184 static ngx_int_t ngx_http_grpc_add_variables(ngx_conf_t *cf); |
7233 | 185 static void *ngx_http_grpc_create_loc_conf(ngx_conf_t *cf); |
186 static char *ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, | |
187 void *parent, void *child); | |
188 static ngx_int_t ngx_http_grpc_init_headers(ngx_conf_t *cf, | |
189 ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_headers_t *headers, | |
190 ngx_keyval_t *default_headers); | |
191 | |
192 static char *ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
193 void *conf); | |
194 | |
195 #if (NGX_HTTP_SSL) | |
196 static char *ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, | |
197 ngx_command_t *cmd, void *conf); | |
198 static ngx_int_t ngx_http_grpc_set_ssl(ngx_conf_t *cf, | |
199 ngx_http_grpc_loc_conf_t *glcf); | |
200 #endif | |
201 | |
202 | |
203 static ngx_conf_bitmask_t ngx_http_grpc_next_upstream_masks[] = { | |
204 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
205 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
206 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
207 { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT }, | |
208 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, | |
209 { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 }, | |
210 { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, | |
211 { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 }, | |
212 { ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 }, | |
213 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
214 { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 }, | |
215 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, | |
216 { ngx_null_string, 0 } | |
217 }; | |
218 | |
219 | |
220 #if (NGX_HTTP_SSL) | |
221 | |
222 static ngx_conf_bitmask_t ngx_http_grpc_ssl_protocols[] = { | |
223 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
224 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
225 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
226 { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, | |
227 { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, | |
228 { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, | |
229 { ngx_null_string, 0 } | |
230 }; | |
231 | |
232 #endif | |
233 | |
234 | |
235 static ngx_command_t ngx_http_grpc_commands[] = { | |
236 | |
237 { ngx_string("grpc_pass"), | |
238 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
239 ngx_http_grpc_pass, | |
240 NGX_HTTP_LOC_CONF_OFFSET, | |
241 0, | |
242 NULL }, | |
243 | |
244 { ngx_string("grpc_bind"), | |
245 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, | |
246 ngx_http_upstream_bind_set_slot, | |
247 NGX_HTTP_LOC_CONF_OFFSET, | |
248 offsetof(ngx_http_grpc_loc_conf_t, upstream.local), | |
249 NULL }, | |
250 | |
251 { ngx_string("grpc_connect_timeout"), | |
252 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
253 ngx_conf_set_msec_slot, | |
254 NGX_HTTP_LOC_CONF_OFFSET, | |
255 offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout), | |
256 NULL }, | |
257 | |
258 { ngx_string("grpc_send_timeout"), | |
259 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
260 ngx_conf_set_msec_slot, | |
261 NGX_HTTP_LOC_CONF_OFFSET, | |
262 offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout), | |
263 NULL }, | |
264 | |
265 { ngx_string("grpc_intercept_errors"), | |
266 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
267 ngx_conf_set_flag_slot, | |
268 NGX_HTTP_LOC_CONF_OFFSET, | |
269 offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors), | |
270 NULL }, | |
271 | |
272 { ngx_string("grpc_buffer_size"), | |
273 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
274 ngx_conf_set_size_slot, | |
275 NGX_HTTP_LOC_CONF_OFFSET, | |
276 offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size), | |
277 NULL }, | |
278 | |
279 { ngx_string("grpc_read_timeout"), | |
280 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
281 ngx_conf_set_msec_slot, | |
282 NGX_HTTP_LOC_CONF_OFFSET, | |
283 offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout), | |
284 NULL }, | |
285 | |
286 { ngx_string("grpc_next_upstream"), | |
287 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
288 ngx_conf_set_bitmask_slot, | |
289 NGX_HTTP_LOC_CONF_OFFSET, | |
290 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream), | |
291 &ngx_http_grpc_next_upstream_masks }, | |
292 | |
293 { ngx_string("grpc_next_upstream_tries"), | |
294 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
295 ngx_conf_set_num_slot, | |
296 NGX_HTTP_LOC_CONF_OFFSET, | |
297 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries), | |
298 NULL }, | |
299 | |
300 { ngx_string("grpc_next_upstream_timeout"), | |
301 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
302 ngx_conf_set_msec_slot, | |
303 NGX_HTTP_LOC_CONF_OFFSET, | |
304 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout), | |
305 NULL }, | |
306 | |
307 { ngx_string("grpc_set_header"), | |
308 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
309 ngx_conf_set_keyval_slot, | |
310 NGX_HTTP_LOC_CONF_OFFSET, | |
311 offsetof(ngx_http_grpc_loc_conf_t, headers_source), | |
312 NULL }, | |
313 | |
314 { ngx_string("grpc_pass_header"), | |
315 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
316 ngx_conf_set_str_array_slot, | |
317 NGX_HTTP_LOC_CONF_OFFSET, | |
318 offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers), | |
319 NULL }, | |
320 | |
321 { ngx_string("grpc_hide_header"), | |
322 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
323 ngx_conf_set_str_array_slot, | |
324 NGX_HTTP_LOC_CONF_OFFSET, | |
325 offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers), | |
326 NULL }, | |
327 | |
328 { ngx_string("grpc_ignore_headers"), | |
329 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
330 ngx_conf_set_bitmask_slot, | |
331 NGX_HTTP_LOC_CONF_OFFSET, | |
332 offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers), | |
333 &ngx_http_upstream_ignore_headers_masks }, | |
334 | |
335 #if (NGX_HTTP_SSL) | |
336 | |
337 { ngx_string("grpc_ssl_session_reuse"), | |
338 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
339 ngx_conf_set_flag_slot, | |
340 NGX_HTTP_LOC_CONF_OFFSET, | |
341 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse), | |
342 NULL }, | |
343 | |
344 { ngx_string("grpc_ssl_protocols"), | |
345 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
346 ngx_conf_set_bitmask_slot, | |
347 NGX_HTTP_LOC_CONF_OFFSET, | |
348 offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols), | |
349 &ngx_http_grpc_ssl_protocols }, | |
350 | |
351 { ngx_string("grpc_ssl_ciphers"), | |
352 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
353 ngx_conf_set_str_slot, | |
354 NGX_HTTP_LOC_CONF_OFFSET, | |
355 offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers), | |
356 NULL }, | |
357 | |
358 { ngx_string("grpc_ssl_name"), | |
359 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
360 ngx_http_set_complex_value_slot, | |
361 NGX_HTTP_LOC_CONF_OFFSET, | |
362 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name), | |
363 NULL }, | |
364 | |
365 { ngx_string("grpc_ssl_server_name"), | |
366 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
367 ngx_conf_set_flag_slot, | |
368 NGX_HTTP_LOC_CONF_OFFSET, | |
369 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name), | |
370 NULL }, | |
371 | |
372 { ngx_string("grpc_ssl_verify"), | |
373 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
374 ngx_conf_set_flag_slot, | |
375 NGX_HTTP_LOC_CONF_OFFSET, | |
376 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify), | |
377 NULL }, | |
378 | |
379 { ngx_string("grpc_ssl_verify_depth"), | |
380 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
381 ngx_conf_set_num_slot, | |
382 NGX_HTTP_LOC_CONF_OFFSET, | |
383 offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth), | |
384 NULL }, | |
385 | |
386 { ngx_string("grpc_ssl_trusted_certificate"), | |
387 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
388 ngx_conf_set_str_slot, | |
389 NGX_HTTP_LOC_CONF_OFFSET, | |
390 offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate), | |
391 NULL }, | |
392 | |
393 { ngx_string("grpc_ssl_crl"), | |
394 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
395 ngx_conf_set_str_slot, | |
396 NGX_HTTP_LOC_CONF_OFFSET, | |
397 offsetof(ngx_http_grpc_loc_conf_t, ssl_crl), | |
398 NULL }, | |
399 | |
400 { ngx_string("grpc_ssl_certificate"), | |
401 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
402 ngx_conf_set_str_slot, | |
403 NGX_HTTP_LOC_CONF_OFFSET, | |
404 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate), | |
405 NULL }, | |
406 | |
407 { ngx_string("grpc_ssl_certificate_key"), | |
408 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
409 ngx_conf_set_str_slot, | |
410 NGX_HTTP_LOC_CONF_OFFSET, | |
411 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate_key), | |
412 NULL }, | |
413 | |
414 { ngx_string("grpc_ssl_password_file"), | |
415 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
416 ngx_http_grpc_ssl_password_file, | |
417 NGX_HTTP_LOC_CONF_OFFSET, | |
418 0, | |
419 NULL }, | |
420 | |
421 #endif | |
422 | |
423 ngx_null_command | |
424 }; | |
425 | |
426 | |
427 static ngx_http_module_t ngx_http_grpc_module_ctx = { | |
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
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428 ngx_http_grpc_add_variables, /* preconfiguration */ |
7233 | 429 NULL, /* postconfiguration */ |
430 | |
431 NULL, /* create main configuration */ | |
432 NULL, /* init main configuration */ | |
433 | |
434 NULL, /* create server configuration */ | |
435 NULL, /* merge server configuration */ | |
436 | |
437 ngx_http_grpc_create_loc_conf, /* create location configuration */ | |
438 ngx_http_grpc_merge_loc_conf /* merge location configuration */ | |
439 }; | |
440 | |
441 | |
442 ngx_module_t ngx_http_grpc_module = { | |
443 NGX_MODULE_V1, | |
444 &ngx_http_grpc_module_ctx, /* module context */ | |
445 ngx_http_grpc_commands, /* module directives */ | |
446 NGX_HTTP_MODULE, /* module type */ | |
447 NULL, /* init master */ | |
448 NULL, /* init module */ | |
449 NULL, /* init process */ | |
450 NULL, /* init thread */ | |
451 NULL, /* exit thread */ | |
452 NULL, /* exit process */ | |
453 NULL, /* exit master */ | |
454 NGX_MODULE_V1_PADDING | |
455 }; | |
456 | |
457 | |
458 static u_char ngx_http_grpc_connection_start[] = | |
459 "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* connection preface */ | |
460 | |
461 "\x00\x00\x12\x04\x00\x00\x00\x00\x00" /* settings frame */ | |
462 "\x00\x01\x00\x00\x00\x00" /* header table size */ | |
463 "\x00\x02\x00\x00\x00\x00" /* disable push */ | |
464 "\x00\x04\x7f\xff\xff\xff" /* initial window */ | |
465 | |
466 "\x00\x00\x04\x08\x00\x00\x00\x00\x00" /* window update frame */ | |
467 "\x7f\xff\x00\x00"; | |
468 | |
469 | |
470 static ngx_keyval_t ngx_http_grpc_headers[] = { | |
471 { ngx_string("Content-Length"), ngx_string("$content_length") }, | |
7234
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472 { ngx_string("TE"), ngx_string("$grpc_internal_trailers") }, |
7233 | 473 { ngx_string("Host"), ngx_string("") }, |
474 { ngx_string("Connection"), ngx_string("") }, | |
475 { ngx_string("Transfer-Encoding"), ngx_string("") }, | |
476 { ngx_string("Keep-Alive"), ngx_string("") }, | |
477 { ngx_string("Expect"), ngx_string("") }, | |
478 { ngx_string("Upgrade"), ngx_string("") }, | |
479 { ngx_null_string, ngx_null_string } | |
480 }; | |
481 | |
482 | |
483 static ngx_str_t ngx_http_grpc_hide_headers[] = { | |
484 ngx_string("Date"), | |
485 ngx_string("Server"), | |
486 ngx_string("X-Accel-Expires"), | |
487 ngx_string("X-Accel-Redirect"), | |
488 ngx_string("X-Accel-Limit-Rate"), | |
489 ngx_string("X-Accel-Buffering"), | |
490 ngx_string("X-Accel-Charset"), | |
491 ngx_null_string | |
492 }; | |
493 | |
494 | |
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495 static ngx_http_variable_t ngx_http_grpc_vars[] = { |
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496 |
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497 { ngx_string("grpc_internal_trailers"), NULL, |
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498 ngx_http_grpc_internal_trailers_variable, 0, |
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499 NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
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500 |
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501 ngx_http_null_variable |
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502 }; |
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503 |
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504 |
7233 | 505 static ngx_int_t |
506 ngx_http_grpc_handler(ngx_http_request_t *r) | |
507 { | |
508 ngx_int_t rc; | |
509 ngx_http_upstream_t *u; | |
510 ngx_http_grpc_ctx_t *ctx; | |
511 ngx_http_grpc_loc_conf_t *glcf; | |
512 | |
513 if (ngx_http_upstream_create(r) != NGX_OK) { | |
514 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
515 } | |
516 | |
517 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
518 | |
519 u = r->upstream; | |
520 | |
521 #if (NGX_HTTP_SSL) | |
522 u->ssl = (glcf->upstream.ssl != NULL); | |
523 | |
524 if (u->ssl) { | |
525 ngx_str_set(&u->schema, "grpcs://"); | |
526 | |
527 } else { | |
528 ngx_str_set(&u->schema, "grpc://"); | |
529 } | |
530 #else | |
531 ngx_str_set(&u->schema, "grpc://"); | |
532 #endif | |
533 | |
534 u->output.tag = (ngx_buf_tag_t) &ngx_http_grpc_module; | |
535 | |
536 u->conf = &glcf->upstream; | |
537 | |
538 u->create_request = ngx_http_grpc_create_request; | |
539 u->reinit_request = ngx_http_grpc_reinit_request; | |
540 u->process_header = ngx_http_grpc_process_header; | |
541 u->abort_request = ngx_http_grpc_abort_request; | |
542 u->finalize_request = ngx_http_grpc_finalize_request; | |
543 | |
544 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_grpc_ctx_t)); | |
545 if (ctx == NULL) { | |
546 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
547 } | |
548 | |
549 ctx->request = r; | |
550 | |
551 ngx_http_set_ctx(r, ctx, ngx_http_grpc_module); | |
552 | |
553 u->input_filter_init = ngx_http_grpc_filter_init; | |
554 u->input_filter = ngx_http_grpc_filter; | |
555 u->input_filter_ctx = ctx; | |
556 | |
557 r->request_body_no_buffering = 1; | |
558 | |
559 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init); | |
560 | |
561 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { | |
562 return rc; | |
563 } | |
564 | |
565 return NGX_DONE; | |
566 } | |
567 | |
568 | |
569 static ngx_int_t | |
570 ngx_http_grpc_create_request(ngx_http_request_t *r) | |
571 { | |
572 u_char *p, *tmp, *key_tmp, *val_tmp, *headers_frame; | |
573 size_t len, tmp_len, key_len, val_len, uri_len; | |
574 uintptr_t escape; | |
575 ngx_buf_t *b; | |
576 ngx_uint_t i, next; | |
577 ngx_chain_t *cl, *body; | |
578 ngx_list_part_t *part; | |
579 ngx_table_elt_t *header; | |
580 ngx_http_upstream_t *u; | |
581 ngx_http_grpc_frame_t *f; | |
582 ngx_http_script_code_pt code; | |
583 ngx_http_grpc_loc_conf_t *glcf; | |
584 ngx_http_script_engine_t e, le; | |
585 ngx_http_script_len_code_pt lcode; | |
586 | |
587 u = r->upstream; | |
588 | |
589 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
590 | |
591 len = sizeof(ngx_http_grpc_connection_start) - 1 | |
592 + sizeof(ngx_http_grpc_frame_t); /* headers frame */ | |
593 | |
594 /* :method header */ | |
595 | |
596 if (r->method == NGX_HTTP_GET || r->method == NGX_HTTP_POST) { | |
597 len += 1; | |
598 tmp_len = 0; | |
599 | |
600 } else { | |
601 len += 1 + NGX_HTTP_V2_INT_OCTETS + r->method_name.len; | |
602 tmp_len = r->method_name.len; | |
603 } | |
604 | |
605 /* :scheme header */ | |
606 | |
607 len += 1; | |
608 | |
609 /* :path header */ | |
610 | |
611 if (r->valid_unparsed_uri) { | |
612 escape = 0; | |
613 uri_len = r->unparsed_uri.len; | |
614 | |
615 } else { | |
616 escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
617 NGX_ESCAPE_URI); | |
618 uri_len = r->uri.len + escape + sizeof("?") - 1 + r->args.len; | |
619 } | |
620 | |
621 len += 1 + NGX_HTTP_V2_INT_OCTETS + uri_len; | |
622 | |
623 if (tmp_len < uri_len) { | |
624 tmp_len = uri_len; | |
625 } | |
626 | |
627 /* :authority header */ | |
628 | |
629 if (!glcf->host_set) { | |
630 len += 1 + NGX_HTTP_V2_INT_OCTETS + glcf->host.len; | |
631 | |
632 if (tmp_len < glcf->host.len) { | |
633 tmp_len = glcf->host.len; | |
634 } | |
635 } | |
636 | |
637 /* other headers */ | |
638 | |
639 ngx_http_script_flush_no_cacheable_variables(r, glcf->headers.flushes); | |
640 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
641 | |
642 le.ip = glcf->headers.lengths->elts; | |
643 le.request = r; | |
644 le.flushed = 1; | |
645 | |
646 while (*(uintptr_t *) le.ip) { | |
647 | |
648 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
649 key_len = lcode(&le); | |
650 | |
651 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
652 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
653 } | |
654 le.ip += sizeof(uintptr_t); | |
655 | |
656 if (val_len == 0) { | |
657 continue; | |
658 } | |
659 | |
660 len += 1 + NGX_HTTP_V2_INT_OCTETS + key_len | |
661 + NGX_HTTP_V2_INT_OCTETS + val_len; | |
662 | |
663 if (tmp_len < key_len) { | |
664 tmp_len = key_len; | |
665 } | |
666 | |
667 if (tmp_len < val_len) { | |
668 tmp_len = val_len; | |
669 } | |
670 } | |
671 | |
672 if (glcf->upstream.pass_request_headers) { | |
673 part = &r->headers_in.headers.part; | |
674 header = part->elts; | |
675 | |
676 for (i = 0; /* void */; i++) { | |
677 | |
678 if (i >= part->nelts) { | |
679 if (part->next == NULL) { | |
680 break; | |
681 } | |
682 | |
683 part = part->next; | |
684 header = part->elts; | |
685 i = 0; | |
686 } | |
687 | |
688 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
689 header[i].lowcase_key, header[i].key.len)) | |
690 { | |
691 continue; | |
692 } | |
693 | |
694 len += 1 + NGX_HTTP_V2_INT_OCTETS + header[i].key.len | |
695 + NGX_HTTP_V2_INT_OCTETS + header[i].value.len; | |
696 | |
697 if (tmp_len < header[i].key.len) { | |
698 tmp_len = header[i].key.len; | |
699 } | |
700 | |
701 if (tmp_len < header[i].value.len) { | |
702 tmp_len = header[i].value.len; | |
703 } | |
704 } | |
705 } | |
706 | |
707 /* continuation frames */ | |
708 | |
709 len += sizeof(ngx_http_grpc_frame_t) | |
710 * (len / NGX_HTTP_V2_DEFAULT_FRAME_SIZE); | |
711 | |
712 | |
713 b = ngx_create_temp_buf(r->pool, len); | |
714 if (b == NULL) { | |
715 return NGX_ERROR; | |
716 } | |
717 | |
718 cl = ngx_alloc_chain_link(r->pool); | |
719 if (cl == NULL) { | |
720 return NGX_ERROR; | |
721 } | |
722 | |
723 cl->buf = b; | |
724 cl->next = NULL; | |
725 | |
726 tmp = ngx_palloc(r->pool, tmp_len * 3); | |
727 if (tmp == NULL) { | |
728 return NGX_ERROR; | |
729 } | |
730 | |
731 key_tmp = tmp + tmp_len; | |
732 val_tmp = tmp + 2 * tmp_len; | |
733 | |
734 /* connection preface */ | |
735 | |
736 b->last = ngx_copy(b->last, ngx_http_grpc_connection_start, | |
737 sizeof(ngx_http_grpc_connection_start) - 1); | |
738 | |
739 /* headers frame */ | |
740 | |
741 headers_frame = b->last; | |
742 | |
743 f = (ngx_http_grpc_frame_t *) b->last; | |
744 b->last += sizeof(ngx_http_grpc_frame_t); | |
745 | |
746 f->length_0 = 0; | |
747 f->length_1 = 0; | |
748 f->length_2 = 0; | |
749 f->type = NGX_HTTP_V2_HEADERS_FRAME; | |
750 f->flags = 0; | |
751 f->stream_id_0 = 0; | |
752 f->stream_id_1 = 0; | |
753 f->stream_id_2 = 0; | |
754 f->stream_id_3 = 1; | |
755 | |
756 if (r->method == NGX_HTTP_GET) { | |
757 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_GET_INDEX); | |
758 | |
759 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
760 "grpc header: \":method: GET\""); | |
761 | |
762 } else if (r->method == NGX_HTTP_POST) { | |
763 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_POST_INDEX); | |
764 | |
765 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
766 "grpc header: \":method: POST\""); | |
767 | |
768 } else { | |
769 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_METHOD_INDEX); | |
770 b->last = ngx_http_v2_write_value(b->last, r->method_name.data, | |
771 r->method_name.len, tmp); | |
772 | |
773 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
774 "grpc header: \":method: %V\"", &r->method_name); | |
775 } | |
776 | |
777 #if (NGX_HTTP_SSL) | |
778 if (glcf->ssl) { | |
779 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTPS_INDEX); | |
780 | |
781 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
782 "grpc header: \":scheme: https\""); | |
783 } else | |
784 #endif | |
785 { | |
786 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTP_INDEX); | |
787 | |
788 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
789 "grpc header: \":scheme: http\""); | |
790 } | |
791 | |
792 if (r->valid_unparsed_uri) { | |
793 | |
794 if (r->unparsed_uri.len == 1 && r->unparsed_uri.data[0] == '/') { | |
795 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_PATH_ROOT_INDEX); | |
796 | |
797 } else { | |
798 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
799 b->last = ngx_http_v2_write_value(b->last, r->unparsed_uri.data, | |
800 r->unparsed_uri.len, tmp); | |
801 } | |
802 | |
803 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
804 "grpc header: \":path: %V\"", &r->unparsed_uri); | |
805 | |
806 } else if (escape || r->args.len > 0) { | |
807 p = val_tmp; | |
808 | |
809 if (escape) { | |
810 p = (u_char *) ngx_escape_uri(p, r->uri.data, r->uri.len, | |
811 NGX_ESCAPE_URI); | |
812 | |
813 } else { | |
814 p = ngx_copy(p, r->uri.data, r->uri.len); | |
815 } | |
816 | |
817 if (r->args.len > 0) { | |
818 *p++ = '?'; | |
819 p = ngx_copy(p, r->args.data, r->args.len); | |
820 } | |
821 | |
822 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
823 b->last = ngx_http_v2_write_value(b->last, val_tmp, p - val_tmp, tmp); | |
824 | |
825 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
826 "grpc header: \":path: %*s\"", p - val_tmp, val_tmp); | |
827 | |
828 } else { | |
829 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
830 b->last = ngx_http_v2_write_value(b->last, r->uri.data, | |
831 r->uri.len, tmp); | |
832 | |
833 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
834 "grpc header: \":path: %V\"", &r->uri); | |
835 } | |
836 | |
837 if (!glcf->host_set) { | |
838 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_AUTHORITY_INDEX); | |
839 b->last = ngx_http_v2_write_value(b->last, glcf->host.data, | |
840 glcf->host.len, tmp); | |
841 | |
842 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
843 "grpc header: \":authority: %V\"", &glcf->host); | |
844 } | |
845 | |
846 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
847 | |
848 e.ip = glcf->headers.values->elts; | |
849 e.request = r; | |
850 e.flushed = 1; | |
851 | |
852 le.ip = glcf->headers.lengths->elts; | |
853 | |
854 while (*(uintptr_t *) le.ip) { | |
855 | |
856 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
857 key_len = lcode(&le); | |
858 | |
859 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
860 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
861 } | |
862 le.ip += sizeof(uintptr_t); | |
863 | |
864 if (val_len == 0) { | |
865 e.skip = 1; | |
866 | |
867 while (*(uintptr_t *) e.ip) { | |
868 code = *(ngx_http_script_code_pt *) e.ip; | |
869 code((ngx_http_script_engine_t *) &e); | |
870 } | |
871 e.ip += sizeof(uintptr_t); | |
872 | |
873 e.skip = 0; | |
874 | |
875 continue; | |
876 } | |
877 | |
878 *b->last++ = 0; | |
879 | |
880 e.pos = key_tmp; | |
881 | |
882 code = *(ngx_http_script_code_pt *) e.ip; | |
883 code((ngx_http_script_engine_t *) &e); | |
884 | |
885 b->last = ngx_http_v2_write_name(b->last, key_tmp, key_len, tmp); | |
886 | |
887 e.pos = val_tmp; | |
888 | |
889 while (*(uintptr_t *) e.ip) { | |
890 code = *(ngx_http_script_code_pt *) e.ip; | |
891 code((ngx_http_script_engine_t *) &e); | |
892 } | |
893 e.ip += sizeof(uintptr_t); | |
894 | |
895 b->last = ngx_http_v2_write_value(b->last, val_tmp, val_len, tmp); | |
896 | |
897 #if (NGX_DEBUG) | |
898 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
899 ngx_strlow(key_tmp, key_tmp, key_len); | |
900 | |
901 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
902 "grpc header: \"%*s: %*s\"", | |
903 key_len, key_tmp, val_len, val_tmp); | |
904 } | |
905 #endif | |
906 } | |
907 | |
908 if (glcf->upstream.pass_request_headers) { | |
909 part = &r->headers_in.headers.part; | |
910 header = part->elts; | |
911 | |
912 for (i = 0; /* void */; i++) { | |
913 | |
914 if (i >= part->nelts) { | |
915 if (part->next == NULL) { | |
916 break; | |
917 } | |
918 | |
919 part = part->next; | |
920 header = part->elts; | |
921 i = 0; | |
922 } | |
923 | |
924 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
925 header[i].lowcase_key, header[i].key.len)) | |
926 { | |
927 continue; | |
928 } | |
929 | |
930 *b->last++ = 0; | |
931 | |
932 b->last = ngx_http_v2_write_name(b->last, header[i].key.data, | |
933 header[i].key.len, tmp); | |
934 | |
935 b->last = ngx_http_v2_write_value(b->last, header[i].value.data, | |
936 header[i].value.len, tmp); | |
937 | |
938 #if (NGX_DEBUG) | |
939 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
940 ngx_strlow(tmp, header[i].key.data, header[i].key.len); | |
941 | |
942 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
943 "grpc header: \"%*s: %V\"", | |
944 header[i].key.len, tmp, &header[i].value); | |
945 } | |
946 #endif | |
947 } | |
948 } | |
949 | |
950 /* update headers frame length */ | |
951 | |
952 len = b->last - headers_frame - sizeof(ngx_http_grpc_frame_t); | |
953 | |
954 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
955 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
956 next = 1; | |
957 | |
958 } else { | |
959 next = 0; | |
960 } | |
961 | |
962 f = (ngx_http_grpc_frame_t *) headers_frame; | |
963 | |
964 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
965 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
966 f->length_2 = (u_char) (len & 0xff); | |
967 | |
968 /* create additional continuation frames */ | |
969 | |
970 p = headers_frame; | |
971 | |
972 while (next) { | |
973 p += sizeof(ngx_http_grpc_frame_t) + NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
974 len = b->last - p; | |
975 | |
976 ngx_memmove(p + sizeof(ngx_http_grpc_frame_t), p, len); | |
977 b->last += sizeof(ngx_http_grpc_frame_t); | |
978 | |
979 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
980 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
981 next = 1; | |
982 | |
983 } else { | |
984 next = 0; | |
985 } | |
986 | |
987 f = (ngx_http_grpc_frame_t *) p; | |
988 | |
989 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
990 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
991 f->length_2 = (u_char) (len & 0xff); | |
992 f->type = NGX_HTTP_V2_CONTINUATION_FRAME; | |
993 f->flags = 0; | |
994 f->stream_id_0 = 0; | |
995 f->stream_id_1 = 0; | |
996 f->stream_id_2 = 0; | |
997 f->stream_id_3 = 1; | |
998 } | |
999 | |
1000 f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG; | |
1001 | |
1002 #if (NGX_DEBUG) | |
1003 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
1004 u_char buf[512]; | |
1005 size_t n, m; | |
1006 | |
1007 n = ngx_min(b->last - b->pos, 256); | |
1008 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
1009 | |
1010 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1011 "grpc header: %*s%s, len: %uz", | |
1012 m, buf, b->last - b->pos > 256 ? "..." : "", | |
1013 b->last - b->pos); | |
1014 } | |
1015 #endif | |
1016 | |
1017 if (r->request_body_no_buffering) { | |
1018 | |
1019 u->request_bufs = cl; | |
1020 | |
1021 } else { | |
1022 | |
1023 body = u->request_bufs; | |
1024 u->request_bufs = cl; | |
1025 | |
1026 if (body == NULL) { | |
1027 f = (ngx_http_grpc_frame_t *) headers_frame; | |
1028 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
1029 } | |
1030 | |
1031 while (body) { | |
1032 b = ngx_alloc_buf(r->pool); | |
1033 if (b == NULL) { | |
1034 return NGX_ERROR; | |
1035 } | |
1036 | |
1037 ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); | |
1038 | |
1039 cl->next = ngx_alloc_chain_link(r->pool); | |
1040 if (cl->next == NULL) { | |
1041 return NGX_ERROR; | |
1042 } | |
1043 | |
1044 cl = cl->next; | |
1045 cl->buf = b; | |
1046 | |
1047 body = body->next; | |
1048 } | |
1049 | |
1050 b->last_buf = 1; | |
1051 } | |
1052 | |
1053 u->output.output_filter = ngx_http_grpc_body_output_filter; | |
1054 u->output.filter_ctx = r; | |
1055 | |
1056 b->flush = 1; | |
1057 cl->next = NULL; | |
1058 | |
1059 return NGX_OK; | |
1060 } | |
1061 | |
1062 | |
1063 static ngx_int_t | |
1064 ngx_http_grpc_reinit_request(ngx_http_request_t *r) | |
1065 { | |
1066 ngx_http_grpc_ctx_t *ctx; | |
1067 | |
1068 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
1069 | |
1070 if (ctx == NULL) { | |
1071 return NGX_OK; | |
1072 } | |
1073 | |
1074 ctx->state = 0; | |
1075 ctx->header_sent = 0; | |
1076 ctx->output_closed = 0; | |
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1077 ctx->output_blocked = 0; |
7233 | 1078 ctx->parsing_headers = 0; |
1079 ctx->end_stream = 0; | |
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1080 ctx->done = 0; |
7233 | 1081 ctx->status = 0; |
1082 ctx->connection = NULL; | |
1083 | |
1084 return NGX_OK; | |
1085 } | |
1086 | |
1087 | |
1088 static ngx_int_t | |
1089 ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in) | |
1090 { | |
1091 ngx_http_request_t *r = data; | |
1092 | |
1093 off_t file_pos; | |
1094 u_char *p, *pos, *start; | |
1095 size_t len, limit; | |
1096 ngx_buf_t *b; | |
1097 ngx_int_t rc; | |
1098 ngx_uint_t next, last; | |
1099 ngx_chain_t *cl, *out, **ll; | |
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1100 ngx_http_upstream_t *u; |
7233 | 1101 ngx_http_grpc_ctx_t *ctx; |
1102 ngx_http_grpc_frame_t *f; | |
1103 | |
1104 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1105 "grpc output filter"); | |
1106 | |
1107 ctx = ngx_http_grpc_get_ctx(r); | |
1108 | |
1109 if (ctx == NULL) { | |
1110 return NGX_ERROR; | |
1111 } | |
1112 | |
1113 if (in) { | |
1114 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { | |
1115 return NGX_ERROR; | |
1116 } | |
1117 } | |
1118 | |
1119 out = NULL; | |
1120 ll = &out; | |
1121 | |
1122 if (!ctx->header_sent) { | |
1123 /* first buffer contains headers */ | |
1124 | |
1125 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1126 "grpc output header"); | |
1127 | |
1128 ctx->header_sent = 1; | |
1129 | |
1130 if (ctx->id != 1) { | |
1131 /* | |
1132 * keepalive connection: skip connection preface, | |
1133 * update stream identifiers | |
1134 */ | |
1135 | |
1136 b = ctx->in->buf; | |
1137 b->pos += sizeof(ngx_http_grpc_connection_start) - 1; | |
1138 | |
1139 p = b->pos; | |
1140 | |
1141 while (p < b->last) { | |
1142 f = (ngx_http_grpc_frame_t *) p; | |
1143 p += sizeof(ngx_http_grpc_frame_t); | |
1144 | |
1145 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1146 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1147 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1148 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1149 | |
1150 p += (f->length_0 << 16) + (f->length_1 << 8) + f->length_2; | |
1151 } | |
1152 } | |
1153 | |
1154 if (ctx->in->buf->last_buf) { | |
1155 ctx->output_closed = 1; | |
1156 } | |
1157 | |
1158 *ll = ctx->in; | |
1159 ll = &ctx->in->next; | |
1160 | |
1161 ctx->in = ctx->in->next; | |
1162 } | |
1163 | |
1164 if (ctx->out) { | |
1165 /* queued control frames */ | |
1166 | |
1167 *ll = ctx->out; | |
1168 | |
1169 for (cl = ctx->out, ll = &cl->next; cl; cl = cl->next) { | |
1170 ll = &cl->next; | |
1171 } | |
1172 | |
1173 ctx->out = NULL; | |
1174 } | |
1175 | |
1176 f = NULL; | |
1177 last = 0; | |
1178 | |
1179 limit = ngx_max(0, ctx->send_window); | |
1180 | |
1181 if (limit > ctx->connection->send_window) { | |
1182 limit = ctx->connection->send_window; | |
1183 } | |
1184 | |
1185 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1186 "grpc output limit: %uz w:%z:%uz", | |
1187 limit, ctx->send_window, ctx->connection->send_window); | |
1188 | |
1189 #if (NGX_SUPPRESS_WARN) | |
1190 file_pos = 0; | |
1191 pos = NULL; | |
1192 cl = NULL; | |
1193 #endif | |
1194 | |
1195 in = ctx->in; | |
1196 | |
1197 while (in && limit > 0) { | |
1198 | |
1199 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
1200 "grpc output in l:%d f:%d %p, pos %p, size: %z " | |
1201 "file: %O, size: %O", | |
1202 in->buf->last_buf, | |
1203 in->buf->in_file, | |
1204 in->buf->start, in->buf->pos, | |
1205 in->buf->last - in->buf->pos, | |
1206 in->buf->file_pos, | |
1207 in->buf->file_last - in->buf->file_pos); | |
1208 | |
1209 if (ngx_buf_special(in->buf)) { | |
1210 goto next; | |
1211 } | |
1212 | |
1213 if (in->buf->in_file) { | |
1214 file_pos = in->buf->file_pos; | |
1215 | |
1216 } else { | |
1217 pos = in->buf->pos; | |
1218 } | |
1219 | |
1220 next = 0; | |
1221 | |
1222 do { | |
1223 | |
1224 cl = ngx_http_grpc_get_buf(r, ctx); | |
1225 if (cl == NULL) { | |
1226 return NGX_ERROR; | |
1227 } | |
1228 | |
1229 b = cl->buf; | |
1230 | |
1231 f = (ngx_http_grpc_frame_t *) b->last; | |
1232 b->last += sizeof(ngx_http_grpc_frame_t); | |
1233 | |
1234 *ll = cl; | |
1235 ll = &cl->next; | |
1236 | |
1237 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
1238 if (cl == NULL) { | |
1239 return NGX_ERROR; | |
1240 } | |
1241 | |
1242 b = cl->buf; | |
1243 start = b->start; | |
1244 | |
1245 ngx_memcpy(b, in->buf, sizeof(ngx_buf_t)); | |
1246 | |
1247 /* | |
1248 * restore b->start to preserve memory allocated in the buffer, | |
1249 * to reuse it later for headers and control frames | |
1250 */ | |
1251 | |
1252 b->start = start; | |
1253 | |
1254 if (in->buf->in_file) { | |
1255 b->file_pos = file_pos; | |
1256 file_pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
1257 | |
1258 if (file_pos >= in->buf->file_last) { | |
1259 file_pos = in->buf->file_last; | |
1260 next = 1; | |
1261 } | |
1262 | |
1263 b->file_last = file_pos; | |
1264 len = (ngx_uint_t) (file_pos - b->file_pos); | |
1265 | |
1266 } else { | |
1267 b->pos = pos; | |
1268 pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
1269 | |
1270 if (pos >= in->buf->last) { | |
1271 pos = in->buf->last; | |
1272 next = 1; | |
1273 } | |
1274 | |
1275 b->last = pos; | |
1276 len = (ngx_uint_t) (pos - b->pos); | |
1277 } | |
1278 | |
1279 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
1280 b->shadow = in->buf; | |
1281 b->last_shadow = next; | |
1282 | |
1283 b->last_buf = 0; | |
1284 b->last_in_chain = 0; | |
1285 | |
1286 *ll = cl; | |
1287 ll = &cl->next; | |
1288 | |
1289 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
1290 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
1291 f->length_2 = (u_char) (len & 0xff); | |
1292 f->type = NGX_HTTP_V2_DATA_FRAME; | |
1293 f->flags = 0; | |
1294 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1295 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1296 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1297 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1298 | |
1299 limit -= len; | |
1300 ctx->send_window -= len; | |
1301 ctx->connection->send_window -= len; | |
1302 | |
1303 } while (!next && limit > 0); | |
1304 | |
1305 if (!next) { | |
1306 /* | |
1307 * if the buffer wasn't fully sent due to flow control limits, | |
1308 * preserve position for future use | |
1309 */ | |
1310 | |
1311 if (in->buf->in_file) { | |
1312 in->buf->file_pos = file_pos; | |
1313 | |
1314 } else { | |
1315 in->buf->pos = pos; | |
1316 } | |
1317 | |
1318 break; | |
1319 } | |
1320 | |
1321 next: | |
1322 | |
1323 if (in->buf->last_buf) { | |
1324 last = 1; | |
1325 } | |
1326 | |
1327 in = in->next; | |
1328 } | |
1329 | |
1330 ctx->in = in; | |
1331 | |
1332 if (last) { | |
1333 | |
1334 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1335 "grpc output last"); | |
1336 | |
1337 ctx->output_closed = 1; | |
1338 | |
1339 if (f) { | |
1340 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
1341 | |
1342 } else { | |
1343 cl = ngx_http_grpc_get_buf(r, ctx); | |
1344 if (cl == NULL) { | |
1345 return NGX_ERROR; | |
1346 } | |
1347 | |
1348 b = cl->buf; | |
1349 | |
1350 f = (ngx_http_grpc_frame_t *) b->last; | |
1351 b->last += sizeof(ngx_http_grpc_frame_t); | |
1352 | |
1353 f->length_0 = 0; | |
1354 f->length_1 = 0; | |
1355 f->length_2 = 0; | |
1356 f->type = NGX_HTTP_V2_DATA_FRAME; | |
1357 f->flags = NGX_HTTP_V2_END_STREAM_FLAG; | |
1358 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1359 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1360 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1361 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1362 | |
1363 *ll = cl; | |
1364 ll = &cl->next; | |
1365 } | |
1366 | |
1367 cl->buf->last_buf = 1; | |
1368 } | |
1369 | |
1370 *ll = NULL; | |
1371 | |
1372 #if (NGX_DEBUG) | |
1373 | |
1374 for (cl = out; cl; cl = cl->next) { | |
1375 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
1376 "grpc output out l:%d f:%d %p, pos %p, size: %z " | |
1377 "file: %O, size: %O", | |
1378 cl->buf->last_buf, | |
1379 cl->buf->in_file, | |
1380 cl->buf->start, cl->buf->pos, | |
1381 cl->buf->last - cl->buf->pos, | |
1382 cl->buf->file_pos, | |
1383 cl->buf->file_last - cl->buf->file_pos); | |
1384 } | |
1385 | |
1386 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1387 "grpc output limit: %uz w:%z:%uz", | |
1388 limit, ctx->send_window, ctx->connection->send_window); | |
1389 | |
1390 #endif | |
1391 | |
1392 rc = ngx_chain_writer(&r->upstream->writer, out); | |
1393 | |
1394 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, | |
1395 (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter); | |
1396 | |
1397 for (cl = ctx->free; cl; cl = cl->next) { | |
1398 | |
1399 /* mark original buffers as sent */ | |
1400 | |
1401 if (cl->buf->shadow) { | |
1402 if (cl->buf->last_shadow) { | |
1403 b = cl->buf->shadow; | |
1404 b->pos = b->last; | |
1405 } | |
1406 | |
1407 cl->buf->shadow = NULL; | |
1408 } | |
1409 } | |
1410 | |
1411 if (rc == NGX_OK && ctx->in) { | |
1412 rc = NGX_AGAIN; | |
1413 } | |
1414 | |
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1415 if (rc == NGX_AGAIN) { |
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1416 ctx->output_blocked = 1; |
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1417 |
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1418 } else { |
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1419 ctx->output_blocked = 0; |
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1420 } |
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1421 |
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1422 if (ctx->done) { |
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1423 |
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1424 /* |
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1425 * We have already got the response and were sending some additional |
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1426 * control frames. Even if there is still something unsent, stop |
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1427 * here anyway. |
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1428 */ |
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1429 |
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1430 u = r->upstream; |
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1431 u->length = 0; |
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1432 |
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1433 if (ctx->in == NULL |
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1434 && ctx->out == NULL |
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1435 && ctx->output_closed |
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parents:
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1436 && !ctx->output_blocked |
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1437 && ctx->state == ngx_http_grpc_st_start) |
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1438 { |
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1439 u->keepalive = 1; |
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|
1440 } |
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1441 |
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1442 ngx_post_event(u->peer.connection->read, &ngx_posted_events); |
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1443 } |
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1444 |
7233 | 1445 return rc; |
1446 } | |
1447 | |
1448 | |
1449 static ngx_int_t | |
1450 ngx_http_grpc_process_header(ngx_http_request_t *r) | |
1451 { | |
1452 ngx_str_t *status_line; | |
1453 ngx_int_t rc, status; | |
1454 ngx_buf_t *b; | |
1455 ngx_table_elt_t *h; | |
1456 ngx_http_upstream_t *u; | |
1457 ngx_http_grpc_ctx_t *ctx; | |
1458 ngx_http_upstream_header_t *hh; | |
1459 ngx_http_upstream_main_conf_t *umcf; | |
1460 | |
1461 u = r->upstream; | |
1462 b = &u->buffer; | |
1463 | |
1464 #if (NGX_DEBUG) | |
1465 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
1466 u_char buf[512]; | |
1467 size_t n, m; | |
1468 | |
1469 n = ngx_min(b->last - b->pos, 256); | |
1470 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
1471 | |
1472 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1473 "grpc response: %*s%s, len: %uz", | |
1474 m, buf, b->last - b->pos > 256 ? "..." : "", | |
1475 b->last - b->pos); | |
1476 } | |
1477 #endif | |
1478 | |
1479 ctx = ngx_http_grpc_get_ctx(r); | |
1480 | |
1481 if (ctx == NULL) { | |
1482 return NGX_ERROR; | |
1483 } | |
1484 | |
1485 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); | |
1486 | |
1487 for ( ;; ) { | |
1488 | |
1489 if (ctx->state < ngx_http_grpc_st_payload) { | |
1490 | |
1491 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
1492 | |
1493 if (rc == NGX_AGAIN) { | |
1494 | |
1495 /* | |
1496 * there can be a lot of window update frames, | |
1497 * so we reset buffer if it is empty and we haven't | |
1498 * started parsing headers yet | |
1499 */ | |
1500 | |
1501 if (!ctx->parsing_headers) { | |
1502 b->pos = b->start; | |
1503 b->last = b->pos; | |
1504 } | |
1505 | |
1506 return NGX_AGAIN; | |
1507 } | |
1508 | |
1509 if (rc == NGX_ERROR) { | |
1510 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1511 } | |
1512 | |
1513 /* | |
1514 * RFC 7540 says that implementations MUST discard frames | |
1515 * that have unknown or unsupported types. However, extension | |
1516 * frames that appear in the middle of a header block are | |
1517 * not permitted. Also, for obvious reasons CONTINUATION frames | |
1518 * cannot appear before headers, and DATA frames are not expected | |
1519 * to appear before all headers are parsed. | |
1520 */ | |
1521 | |
1522 if (ctx->type == NGX_HTTP_V2_DATA_FRAME | |
1523 || (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
1524 && !ctx->parsing_headers) | |
1525 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
1526 && ctx->parsing_headers)) | |
1527 { | |
1528 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1529 "upstream sent unexpected http2 frame: %d", | |
1530 ctx->type); | |
1531 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1532 } | |
1533 | |
1534 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
1535 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1536 "upstream sent frame for unknown stream %ui", | |
1537 ctx->stream_id); | |
1538 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1539 } | |
1540 } | |
1541 | |
1542 /* frame payload */ | |
1543 | |
1544 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
1545 | |
1546 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
1547 | |
1548 if (rc == NGX_AGAIN) { | |
1549 return NGX_AGAIN; | |
1550 } | |
1551 | |
1552 if (rc == NGX_ERROR) { | |
1553 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1554 } | |
1555 | |
1556 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1557 "upstream rejected request with error %ui", | |
1558 ctx->error); | |
1559 | |
1560 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1561 } | |
1562 | |
1563 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
1564 | |
1565 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
1566 | |
1567 if (rc == NGX_AGAIN) { | |
1568 return NGX_AGAIN; | |
1569 } | |
1570 | |
1571 if (rc == NGX_ERROR) { | |
1572 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1573 } | |
1574 | |
1575 /* | |
1576 * If stream_id is lower than one we use, our | |
1577 * request won't be processed and needs to be retried. | |
1578 * If stream_id is greater or equal to the one we use, | |
1579 * we can continue normally (except we can't use this | |
1580 * connection for additional requests). If there is | |
1581 * a real error, the connection will be closed. | |
1582 */ | |
1583 | |
1584 if (ctx->stream_id < ctx->id) { | |
1585 | |
1586 /* TODO: we can retry non-idempotent requests */ | |
1587 | |
1588 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1589 "upstream sent goaway with error %ui", | |
1590 ctx->error); | |
1591 | |
1592 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1593 } | |
1594 | |
1595 continue; | |
1596 } | |
1597 | |
1598 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
1599 | |
1600 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
1601 | |
1602 if (rc == NGX_AGAIN) { | |
1603 return NGX_AGAIN; | |
1604 } | |
1605 | |
1606 if (rc == NGX_ERROR) { | |
1607 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1608 } | |
1609 | |
1610 if (ctx->in) { | |
1611 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1612 } | |
1613 | |
1614 continue; | |
1615 } | |
1616 | |
1617 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
1618 | |
1619 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
1620 | |
1621 if (rc == NGX_AGAIN) { | |
1622 return NGX_AGAIN; | |
1623 } | |
1624 | |
1625 if (rc == NGX_ERROR) { | |
1626 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1627 } | |
1628 | |
1629 if (ctx->in) { | |
1630 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1631 } | |
1632 | |
1633 continue; | |
1634 } | |
1635 | |
1636 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
1637 | |
1638 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
1639 | |
1640 if (rc == NGX_AGAIN) { | |
1641 return NGX_AGAIN; | |
1642 } | |
1643 | |
1644 if (rc == NGX_ERROR) { | |
1645 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1646 } | |
1647 | |
1648 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1649 continue; | |
1650 } | |
1651 | |
1652 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
1653 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1654 "upstream sent unexpected push promise frame"); | |
1655 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1656 } | |
1657 | |
1658 if (ctx->type != NGX_HTTP_V2_HEADERS_FRAME | |
1659 && ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME) | |
1660 { | |
1661 /* priority, unknown frames */ | |
1662 | |
1663 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
1664 ctx->rest -= b->last - b->pos; | |
1665 b->pos = b->last; | |
1666 return NGX_AGAIN; | |
1667 } | |
1668 | |
1669 b->pos += ctx->rest; | |
1670 ctx->rest = 0; | |
1671 ctx->state = ngx_http_grpc_st_start; | |
1672 | |
1673 continue; | |
1674 } | |
1675 | |
1676 /* headers */ | |
1677 | |
1678 for ( ;; ) { | |
1679 | |
1680 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
1681 | |
1682 if (rc == NGX_AGAIN) { | |
1683 break; | |
1684 } | |
1685 | |
1686 if (rc == NGX_OK) { | |
1687 | |
1688 /* a header line has been parsed successfully */ | |
1689 | |
1690 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1691 "grpc header: \"%V: %V\"", | |
1692 &ctx->name, &ctx->value); | |
1693 | |
1694 if (ctx->name.len && ctx->name.data[0] == ':') { | |
1695 | |
1696 if (ctx->name.len != sizeof(":status") - 1 | |
1697 || ngx_strncmp(ctx->name.data, ":status", | |
1698 sizeof(":status") - 1) | |
1699 != 0) | |
1700 { | |
1701 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1702 "upstream sent invalid header \"%V: %V\"", | |
1703 &ctx->name, &ctx->value); | |
1704 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1705 } | |
1706 | |
1707 if (ctx->status) { | |
1708 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1709 "upstream sent duplicate :status header"); | |
1710 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1711 } | |
1712 | |
1713 status_line = &ctx->value; | |
1714 | |
1715 if (status_line->len != 3) { | |
1716 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1717 "upstream sent invalid :status \"%V\"", | |
1718 status_line); | |
1719 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1720 } | |
1721 | |
1722 status = ngx_atoi(status_line->data, 3); | |
1723 | |
1724 if (status == NGX_ERROR) { | |
1725 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1726 "upstream sent invalid :status \"%V\"", | |
1727 status_line); | |
1728 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1729 } | |
1730 | |
1731 if (status < NGX_HTTP_OK) { | |
1732 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1733 "upstream sent unexpected :status \"%V\"", | |
1734 status_line); | |
1735 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1736 } | |
1737 | |
1738 u->headers_in.status_n = status; | |
1739 | |
1740 if (u->state && u->state->status == 0) { | |
1741 u->state->status = status; | |
1742 } | |
1743 | |
1744 ctx->status = 1; | |
1745 | |
1746 continue; | |
1747 | |
1748 } else if (!ctx->status) { | |
1749 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1750 "upstream sent no :status header"); | |
1751 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1752 } | |
1753 | |
1754 h = ngx_list_push(&u->headers_in.headers); | |
1755 if (h == NULL) { | |
1756 return NGX_ERROR; | |
1757 } | |
1758 | |
1759 h->key = ctx->name; | |
1760 h->value = ctx->value; | |
1761 h->lowcase_key = h->key.data; | |
1762 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
1763 | |
1764 hh = ngx_hash_find(&umcf->headers_in_hash, h->hash, | |
1765 h->lowcase_key, h->key.len); | |
1766 | |
1767 if (hh && hh->handler(r, h, hh->offset) != NGX_OK) { | |
1768 return NGX_ERROR; | |
1769 } | |
1770 | |
1771 continue; | |
1772 } | |
1773 | |
1774 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
1775 | |
1776 /* a whole header has been parsed successfully */ | |
1777 | |
1778 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1779 "grpc header done"); | |
1780 | |
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1781 if (ctx->end_stream) { |
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1782 u->headers_in.content_length_n = 0; |
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1783 |
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1784 if (ctx->in == NULL |
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1785 && ctx->out == NULL |
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1786 && ctx->output_closed |
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1787 && !ctx->output_blocked |
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1788 && b->last == b->pos) |
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1789 { |
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1790 u->keepalive = 1; |
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1791 } |
7233 | 1792 } |
1793 | |
1794 return NGX_OK; | |
1795 } | |
1796 | |
1797 /* there was error while a header line parsing */ | |
1798 | |
1799 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1800 "upstream sent invalid header"); | |
1801 | |
1802 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1803 } | |
1804 | |
1805 /* rc == NGX_AGAIN */ | |
1806 | |
1807 if (ctx->rest == 0) { | |
1808 ctx->state = ngx_http_grpc_st_start; | |
1809 continue; | |
1810 } | |
1811 | |
1812 return NGX_AGAIN; | |
1813 } | |
1814 } | |
1815 | |
1816 | |
1817 static ngx_int_t | |
1818 ngx_http_grpc_filter_init(void *data) | |
1819 { | |
1820 ngx_http_grpc_ctx_t *ctx = data; | |
1821 | |
1822 ngx_http_request_t *r; | |
1823 ngx_http_upstream_t *u; | |
1824 | |
1825 r = ctx->request; | |
1826 u = r->upstream; | |
1827 | |
1828 u->length = 1; | |
1829 | |
1830 if (ctx->end_stream) { | |
1831 u->length = 0; | |
1832 } | |
1833 | |
1834 return NGX_OK; | |
1835 } | |
1836 | |
1837 | |
1838 static ngx_int_t | |
1839 ngx_http_grpc_filter(void *data, ssize_t bytes) | |
1840 { | |
1841 ngx_http_grpc_ctx_t *ctx = data; | |
1842 | |
1843 ngx_int_t rc; | |
1844 ngx_buf_t *b, *buf; | |
1845 ngx_chain_t *cl, **ll; | |
1846 ngx_table_elt_t *h; | |
1847 ngx_http_request_t *r; | |
1848 ngx_http_upstream_t *u; | |
1849 | |
1850 r = ctx->request; | |
1851 u = r->upstream; | |
1852 b = &u->buffer; | |
1853 | |
1854 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1855 "grpc filter bytes:%z", bytes); | |
1856 | |
1857 b->pos = b->last; | |
1858 b->last += bytes; | |
1859 | |
1860 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
1861 ll = &cl->next; | |
1862 } | |
1863 | |
1864 for ( ;; ) { | |
1865 | |
1866 if (ctx->state < ngx_http_grpc_st_payload) { | |
1867 | |
1868 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
1869 | |
1870 if (rc == NGX_AGAIN) { | |
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1871 |
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1872 if (ctx->done) { |
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1873 |
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1874 /* |
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1875 * We have finished parsing the response and the |
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1876 * remaining control frames. If there are unsent |
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1877 * control frames, post a write event to send them. |
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1878 */ |
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1879 |
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1880 if (ctx->out) { |
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1881 ngx_post_event(u->peer.connection->write, |
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1882 &ngx_posted_events); |
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1883 return NGX_AGAIN; |
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1884 } |
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1885 |
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1886 u->length = 0; |
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1887 |
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1888 if (ctx->in == NULL |
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1889 && ctx->output_closed |
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1890 && !ctx->output_blocked |
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1891 && ctx->state == ngx_http_grpc_st_start) |
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1892 { |
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1893 u->keepalive = 1; |
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1894 } |
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1895 |
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1896 break; |
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1897 } |
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1898 |
7233 | 1899 return NGX_AGAIN; |
1900 } | |
1901 | |
1902 if (rc == NGX_ERROR) { | |
1903 return NGX_ERROR; | |
1904 } | |
1905 | |
1906 if ((ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
1907 && !ctx->parsing_headers) | |
1908 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
1909 && ctx->parsing_headers)) | |
1910 { | |
1911 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1912 "upstream sent unexpected http2 frame: %d", | |
1913 ctx->type); | |
1914 return NGX_ERROR; | |
1915 } | |
1916 | |
1917 if (ctx->type == NGX_HTTP_V2_DATA_FRAME) { | |
1918 | |
1919 if (ctx->stream_id != ctx->id) { | |
1920 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1921 "upstream sent data frame " | |
1922 "for unknown stream %ui", | |
1923 ctx->stream_id); | |
1924 return NGX_ERROR; | |
1925 } | |
1926 | |
1927 if (ctx->rest > ctx->recv_window) { | |
1928 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1929 "upstream violated stream flow control, " | |
1930 "received %uz data frame with window %uz", | |
1931 ctx->rest, ctx->recv_window); | |
1932 return NGX_ERROR; | |
1933 } | |
1934 | |
1935 if (ctx->rest > ctx->connection->recv_window) { | |
1936 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1937 "upstream violated connection flow control, " | |
1938 "received %uz data frame with window %uz", | |
1939 ctx->rest, ctx->connection->recv_window); | |
1940 return NGX_ERROR; | |
1941 } | |
1942 | |
1943 ctx->recv_window -= ctx->rest; | |
1944 ctx->connection->recv_window -= ctx->rest; | |
1945 | |
1946 if (ctx->connection->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4 | |
1947 || ctx->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4) | |
1948 { | |
1949 if (ngx_http_grpc_send_window_update(r, ctx) != NGX_OK) { | |
1950 return NGX_ERROR; | |
1951 } | |
1952 | |
1953 ngx_post_event(u->peer.connection->write, | |
1954 &ngx_posted_events); | |
1955 } | |
1956 } | |
1957 | |
1958 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
1959 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1960 "upstream sent frame for unknown stream %ui", | |
1961 ctx->stream_id); | |
1962 return NGX_ERROR; | |
1963 } | |
1964 | |
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1965 if (ctx->stream_id && ctx->done) { |
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1966 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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1967 "upstream sent frame for closed stream %ui", |
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1968 ctx->stream_id); |
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1969 return NGX_ERROR; |
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1970 } |
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1971 |
7233 | 1972 ctx->padding = 0; |
1973 } | |
1974 | |
1975 if (ctx->state == ngx_http_grpc_st_padding) { | |
1976 | |
1977 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
1978 ctx->rest -= b->last - b->pos; | |
1979 b->pos = b->last; | |
1980 return NGX_AGAIN; | |
1981 } | |
1982 | |
1983 b->pos += ctx->rest; | |
1984 ctx->rest = 0; | |
1985 ctx->state = ngx_http_grpc_st_start; | |
1986 | |
1987 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
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1988 ctx->done = 1; |
7233 | 1989 } |
1990 | |
1991 continue; | |
1992 } | |
1993 | |
1994 /* frame payload */ | |
1995 | |
1996 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
1997 | |
1998 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
1999 | |
2000 if (rc == NGX_AGAIN) { | |
2001 return NGX_AGAIN; | |
2002 } | |
2003 | |
2004 if (rc == NGX_ERROR) { | |
2005 return NGX_ERROR; | |
2006 } | |
2007 | |
2008 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2009 "upstream rejected request with error %ui", | |
2010 ctx->error); | |
2011 | |
2012 return NGX_ERROR; | |
2013 } | |
2014 | |
2015 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
2016 | |
2017 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
2018 | |
2019 if (rc == NGX_AGAIN) { | |
2020 return NGX_AGAIN; | |
2021 } | |
2022 | |
2023 if (rc == NGX_ERROR) { | |
2024 return NGX_ERROR; | |
2025 } | |
2026 | |
2027 /* | |
2028 * If stream_id is lower than one we use, our | |
2029 * request won't be processed and needs to be retried. | |
2030 * If stream_id is greater or equal to the one we use, | |
2031 * we can continue normally (except we can't use this | |
2032 * connection for additional requests). If there is | |
2033 * a real error, the connection will be closed. | |
2034 */ | |
2035 | |
2036 if (ctx->stream_id < ctx->id) { | |
2037 | |
2038 /* TODO: we can retry non-idempotent requests */ | |
2039 | |
2040 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2041 "upstream sent goaway with error %ui", | |
2042 ctx->error); | |
2043 | |
2044 return NGX_ERROR; | |
2045 } | |
2046 | |
2047 continue; | |
2048 } | |
2049 | |
2050 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
2051 | |
2052 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
2053 | |
2054 if (rc == NGX_AGAIN) { | |
2055 return NGX_AGAIN; | |
2056 } | |
2057 | |
2058 if (rc == NGX_ERROR) { | |
2059 return NGX_ERROR; | |
2060 } | |
2061 | |
2062 if (ctx->in) { | |
2063 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2064 } | |
2065 | |
2066 continue; | |
2067 } | |
2068 | |
2069 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
2070 | |
2071 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
2072 | |
2073 if (rc == NGX_AGAIN) { | |
2074 return NGX_AGAIN; | |
2075 } | |
2076 | |
2077 if (rc == NGX_ERROR) { | |
2078 return NGX_ERROR; | |
2079 } | |
2080 | |
2081 if (ctx->in) { | |
2082 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2083 } | |
2084 | |
2085 continue; | |
2086 } | |
2087 | |
2088 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
2089 | |
2090 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
2091 | |
2092 if (rc == NGX_AGAIN) { | |
2093 return NGX_AGAIN; | |
2094 } | |
2095 | |
2096 if (rc == NGX_ERROR) { | |
2097 return NGX_ERROR; | |
2098 } | |
2099 | |
2100 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2101 continue; | |
2102 } | |
2103 | |
2104 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
2105 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2106 "upstream sent unexpected push promise frame"); | |
2107 return NGX_ERROR; | |
2108 } | |
2109 | |
2110 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME | |
2111 || ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) | |
2112 { | |
2113 for ( ;; ) { | |
2114 | |
2115 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
2116 | |
2117 if (rc == NGX_AGAIN) { | |
2118 break; | |
2119 } | |
2120 | |
2121 if (rc == NGX_OK) { | |
2122 | |
2123 /* a header line has been parsed successfully */ | |
2124 | |
2125 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2126 "grpc trailer: \"%V: %V\"", | |
2127 &ctx->name, &ctx->value); | |
2128 | |
2129 if (ctx->name.len && ctx->name.data[0] == ':') { | |
2130 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2131 "upstream sent invalid " | |
2132 "trailer \"%V: %V\"", | |
2133 &ctx->name, &ctx->value); | |
2134 return NGX_ERROR; | |
2135 } | |
2136 | |
2137 h = ngx_list_push(&u->headers_in.trailers); | |
2138 if (h == NULL) { | |
2139 return NGX_ERROR; | |
2140 } | |
2141 | |
2142 h->key = ctx->name; | |
2143 h->value = ctx->value; | |
2144 h->lowcase_key = h->key.data; | |
2145 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
2146 | |
2147 continue; | |
2148 } | |
2149 | |
2150 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
2151 | |
2152 /* a whole header has been parsed successfully */ | |
2153 | |
2154 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2155 "grpc trailer done"); | |
2156 | |
2157 if (ctx->end_stream) { | |
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2158 ctx->done = 1; |
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2159 break; |
7233 | 2160 } |
2161 | |
2162 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2163 "upstream sent trailer without " | |
2164 "end stream flag"); | |
2165 return NGX_ERROR; | |
2166 } | |
2167 | |
2168 /* there was error while a header line parsing */ | |
2169 | |
2170 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2171 "upstream sent invalid trailer"); | |
2172 | |
2173 return NGX_ERROR; | |
2174 } | |
2175 | |
7349
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2176 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { |
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|
2177 continue; |
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|
2178 } |
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|
2179 |
7233 | 2180 /* rc == NGX_AGAIN */ |
2181 | |
2182 if (ctx->rest == 0) { | |
2183 ctx->state = ngx_http_grpc_st_start; | |
2184 continue; | |
2185 } | |
2186 | |
2187 return NGX_AGAIN; | |
2188 } | |
2189 | |
2190 if (ctx->type != NGX_HTTP_V2_DATA_FRAME) { | |
2191 | |
2192 /* priority, unknown frames */ | |
2193 | |
2194 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2195 ctx->rest -= b->last - b->pos; | |
2196 b->pos = b->last; | |
2197 return NGX_AGAIN; | |
2198 } | |
2199 | |
2200 b->pos += ctx->rest; | |
2201 ctx->rest = 0; | |
2202 ctx->state = ngx_http_grpc_st_start; | |
2203 | |
2204 continue; | |
2205 } | |
2206 | |
2207 /* | |
2208 * data frame: | |
2209 * | |
2210 * +---------------+ | |
2211 * |Pad Length? (8)| | |
2212 * +---------------+-----------------------------------------------+ | |
2213 * | Data (*) ... | |
2214 * +---------------------------------------------------------------+ | |
2215 * | Padding (*) ... | |
2216 * +---------------------------------------------------------------+ | |
2217 */ | |
2218 | |
2219 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
2220 | |
2221 if (ctx->rest == 0) { | |
2222 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2223 "upstream sent too short http2 frame"); | |
2224 return NGX_ERROR; | |
2225 } | |
2226 | |
2227 if (b->pos == b->last) { | |
2228 return NGX_AGAIN; | |
2229 } | |
2230 | |
2231 ctx->flags &= ~NGX_HTTP_V2_PADDED_FLAG; | |
2232 ctx->padding = *b->pos++; | |
2233 ctx->rest -= 1; | |
2234 | |
2235 if (ctx->padding > ctx->rest) { | |
2236 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2237 "upstream sent http2 frame with too long " | |
2238 "padding: %d in frame %uz", | |
2239 ctx->padding, ctx->rest); | |
2240 return NGX_ERROR; | |
2241 } | |
2242 | |
2243 continue; | |
2244 } | |
2245 | |
2246 if (ctx->rest == ctx->padding) { | |
2247 goto done; | |
2248 } | |
2249 | |
2250 if (b->pos == b->last) { | |
2251 return NGX_AGAIN; | |
2252 } | |
2253 | |
2254 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
2255 if (cl == NULL) { | |
2256 return NGX_ERROR; | |
2257 } | |
2258 | |
2259 *ll = cl; | |
2260 ll = &cl->next; | |
2261 | |
2262 buf = cl->buf; | |
2263 | |
2264 buf->flush = 1; | |
2265 buf->memory = 1; | |
2266 | |
2267 buf->pos = b->pos; | |
2268 buf->tag = u->output.tag; | |
2269 | |
2270 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2271 "grpc output buf %p", buf->pos); | |
2272 | |
2273 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
2274 | |
2275 ctx->rest -= b->last - b->pos; | |
2276 b->pos = b->last; | |
2277 buf->last = b->pos; | |
2278 | |
2279 return NGX_AGAIN; | |
2280 } | |
2281 | |
2282 b->pos += ctx->rest - ctx->padding; | |
2283 buf->last = b->pos; | |
2284 ctx->rest = ctx->padding; | |
2285 | |
2286 done: | |
2287 | |
2288 if (ctx->padding) { | |
2289 ctx->state = ngx_http_grpc_st_padding; | |
2290 continue; | |
2291 } | |
2292 | |
2293 ctx->state = ngx_http_grpc_st_start; | |
2294 | |
2295 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
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|
2296 ctx->done = 1; |
7233 | 2297 } |
2298 } | |
2299 | |
2300 return NGX_OK; | |
2301 } | |
2302 | |
2303 | |
2304 static ngx_int_t | |
2305 ngx_http_grpc_parse_frame(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2306 ngx_buf_t *b) | |
2307 { | |
2308 u_char ch, *p; | |
2309 ngx_http_grpc_state_e state; | |
2310 | |
2311 state = ctx->state; | |
2312 | |
2313 for (p = b->pos; p < b->last; p++) { | |
2314 ch = *p; | |
2315 | |
2316 #if 0 | |
2317 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2318 "grpc frame byte: %02Xd, s:%d", ch, state); | |
2319 #endif | |
2320 | |
2321 switch (state) { | |
2322 | |
2323 case ngx_http_grpc_st_start: | |
2324 ctx->rest = ch << 16; | |
2325 state = ngx_http_grpc_st_length_2; | |
2326 break; | |
2327 | |
2328 case ngx_http_grpc_st_length_2: | |
2329 ctx->rest |= ch << 8; | |
2330 state = ngx_http_grpc_st_length_3; | |
2331 break; | |
2332 | |
2333 case ngx_http_grpc_st_length_3: | |
2334 ctx->rest |= ch; | |
2335 | |
2336 if (ctx->rest > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
2337 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2338 "upstream sent too large http2 frame: %uz", | |
2339 ctx->rest); | |
2340 return NGX_ERROR; | |
2341 } | |
2342 | |
2343 state = ngx_http_grpc_st_type; | |
2344 break; | |
2345 | |
2346 case ngx_http_grpc_st_type: | |
2347 ctx->type = ch; | |
2348 state = ngx_http_grpc_st_flags; | |
2349 break; | |
2350 | |
2351 case ngx_http_grpc_st_flags: | |
2352 ctx->flags = ch; | |
2353 state = ngx_http_grpc_st_stream_id; | |
2354 break; | |
2355 | |
2356 case ngx_http_grpc_st_stream_id: | |
2357 ctx->stream_id = (ch & 0x7f) << 24; | |
2358 state = ngx_http_grpc_st_stream_id_2; | |
2359 break; | |
2360 | |
2361 case ngx_http_grpc_st_stream_id_2: | |
2362 ctx->stream_id |= ch << 16; | |
2363 state = ngx_http_grpc_st_stream_id_3; | |
2364 break; | |
2365 | |
2366 case ngx_http_grpc_st_stream_id_3: | |
2367 ctx->stream_id |= ch << 8; | |
2368 state = ngx_http_grpc_st_stream_id_4; | |
2369 break; | |
2370 | |
2371 case ngx_http_grpc_st_stream_id_4: | |
2372 ctx->stream_id |= ch; | |
2373 | |
2374 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2375 "grpc frame: %d, len: %uz, f:%d, i:%ui", | |
2376 ctx->type, ctx->rest, ctx->flags, ctx->stream_id); | |
2377 | |
2378 b->pos = p + 1; | |
2379 | |
2380 ctx->state = ngx_http_grpc_st_payload; | |
2381 ctx->frame_state = 0; | |
2382 | |
2383 return NGX_OK; | |
2384 | |
2385 /* suppress warning */ | |
2386 case ngx_http_grpc_st_payload: | |
2387 case ngx_http_grpc_st_padding: | |
2388 break; | |
2389 } | |
2390 } | |
2391 | |
2392 b->pos = p; | |
2393 ctx->state = state; | |
2394 | |
2395 return NGX_AGAIN; | |
2396 } | |
2397 | |
2398 | |
2399 static ngx_int_t | |
2400 ngx_http_grpc_parse_header(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2401 ngx_buf_t *b) | |
2402 { | |
2403 u_char ch, *p, *last; | |
2404 size_t min; | |
2405 ngx_int_t rc; | |
2406 enum { | |
2407 sw_start = 0, | |
2408 sw_padding_length, | |
2409 sw_dependency, | |
2410 sw_dependency_2, | |
2411 sw_dependency_3, | |
2412 sw_dependency_4, | |
2413 sw_weight, | |
2414 sw_fragment, | |
2415 sw_padding | |
2416 } state; | |
2417 | |
2418 state = ctx->frame_state; | |
2419 | |
2420 if (state == sw_start) { | |
2421 | |
2422 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2423 "grpc parse header: start"); | |
2424 | |
2425 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME) { | |
2426 ctx->parsing_headers = 1; | |
2427 ctx->fragment_state = 0; | |
2428 | |
2429 min = (ctx->flags & NGX_HTTP_V2_PADDED_FLAG ? 1 : 0) | |
2430 + (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG ? 5 : 0); | |
2431 | |
2432 if (ctx->rest < min) { | |
2433 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2434 "upstream sent headers frame " | |
2435 "with invalid length: %uz", | |
2436 ctx->rest); | |
2437 return NGX_ERROR; | |
2438 } | |
2439 | |
2440 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
2441 ctx->end_stream = 1; | |
2442 } | |
2443 | |
2444 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
2445 state = sw_padding_length; | |
2446 | |
2447 } else if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
2448 state = sw_dependency; | |
2449 | |
2450 } else { | |
2451 state = sw_fragment; | |
2452 } | |
2453 | |
2454 } else if (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) { | |
2455 state = sw_fragment; | |
2456 } | |
2457 | |
2458 ctx->padding = 0; | |
7242
25a4353633a0
gRPC: fixed missing state save in frame header parsing.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7240
diff
changeset
|
2459 ctx->frame_state = state; |
7233 | 2460 } |
2461 | |
2462 if (state < sw_fragment) { | |
2463 | |
2464 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2465 last = b->last; | |
2466 | |
2467 } else { | |
2468 last = b->pos + ctx->rest; | |
2469 } | |
2470 | |
2471 for (p = b->pos; p < last; p++) { | |
2472 ch = *p; | |
2473 | |
2474 #if 0 | |
2475 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2476 "grpc header byte: %02Xd s:%d", ch, state); | |
2477 #endif | |
2478 | |
2479 /* | |
2480 * headers frame: | |
2481 * | |
2482 * +---------------+ | |
2483 * |Pad Length? (8)| | |
2484 * +-+-------------+----------------------------------------------+ | |
2485 * |E| Stream Dependency? (31) | | |
2486 * +-+-------------+----------------------------------------------+ | |
2487 * | Weight? (8) | | |
2488 * +-+-------------+----------------------------------------------+ | |
2489 * | Header Block Fragment (*) ... | |
2490 * +--------------------------------------------------------------+ | |
2491 * | Padding (*) ... | |
2492 * +--------------------------------------------------------------+ | |
2493 */ | |
2494 | |
2495 switch (state) { | |
2496 | |
2497 case sw_padding_length: | |
2498 | |
2499 ctx->padding = ch; | |
2500 | |
2501 if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
2502 state = sw_dependency; | |
2503 break; | |
2504 } | |
2505 | |
2506 goto fragment; | |
2507 | |
2508 case sw_dependency: | |
2509 state = sw_dependency_2; | |
2510 break; | |
2511 | |
2512 case sw_dependency_2: | |
2513 state = sw_dependency_3; | |
2514 break; | |
2515 | |
2516 case sw_dependency_3: | |
2517 state = sw_dependency_4; | |
2518 break; | |
2519 | |
2520 case sw_dependency_4: | |
2521 state = sw_weight; | |
2522 break; | |
2523 | |
2524 case sw_weight: | |
2525 goto fragment; | |
2526 | |
2527 /* suppress warning */ | |
2528 case sw_start: | |
2529 case sw_fragment: | |
2530 case sw_padding: | |
2531 break; | |
2532 } | |
2533 } | |
2534 | |
2535 ctx->rest -= p - b->pos; | |
2536 b->pos = p; | |
2537 | |
2538 ctx->frame_state = state; | |
2539 return NGX_AGAIN; | |
2540 | |
2541 fragment: | |
2542 | |
2543 p++; | |
2544 ctx->rest -= p - b->pos; | |
2545 b->pos = p; | |
2546 | |
2547 if (ctx->padding > ctx->rest) { | |
2548 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2549 "upstream sent http2 frame with too long " | |
2550 "padding: %d in frame %uz", | |
2551 ctx->padding, ctx->rest); | |
2552 return NGX_ERROR; | |
2553 } | |
2554 | |
2555 state = sw_fragment; | |
2556 ctx->frame_state = state; | |
2557 } | |
2558 | |
2559 if (state == sw_fragment) { | |
2560 | |
2561 rc = ngx_http_grpc_parse_fragment(r, ctx, b); | |
2562 | |
2563 if (rc == NGX_AGAIN) { | |
2564 return NGX_AGAIN; | |
2565 } | |
2566 | |
2567 if (rc == NGX_ERROR) { | |
2568 return NGX_ERROR; | |
2569 } | |
2570 | |
2571 if (rc == NGX_OK) { | |
2572 return NGX_OK; | |
2573 } | |
2574 | |
2575 /* rc == NGX_DONE */ | |
2576 | |
2577 state = sw_padding; | |
2578 ctx->frame_state = state; | |
2579 } | |
2580 | |
2581 if (state == sw_padding) { | |
2582 | |
2583 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2584 | |
2585 ctx->rest -= b->last - b->pos; | |
2586 b->pos = b->last; | |
2587 | |
2588 return NGX_AGAIN; | |
2589 } | |
2590 | |
2591 b->pos += ctx->rest; | |
2592 ctx->rest = 0; | |
2593 | |
2594 ctx->state = ngx_http_grpc_st_start; | |
2595 | |
2596 if (ctx->flags & NGX_HTTP_V2_END_HEADERS_FLAG) { | |
2597 | |
2598 if (ctx->fragment_state) { | |
2599 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2600 "upstream sent truncated http2 header"); | |
2601 return NGX_ERROR; | |
2602 } | |
2603 | |
2604 ctx->parsing_headers = 0; | |
2605 | |
2606 return NGX_HTTP_PARSE_HEADER_DONE; | |
2607 } | |
2608 | |
2609 return NGX_AGAIN; | |
2610 } | |
2611 | |
2612 /* unreachable */ | |
2613 | |
2614 return NGX_ERROR; | |
2615 } | |
2616 | |
2617 | |
2618 static ngx_int_t | |
2619 ngx_http_grpc_parse_fragment(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2620 ngx_buf_t *b) | |
2621 { | |
2622 u_char ch, *p, *last; | |
2623 size_t size; | |
2624 ngx_uint_t index, size_update; | |
2625 enum { | |
2626 sw_start = 0, | |
2627 sw_index, | |
2628 sw_name_length, | |
2629 sw_name_length_2, | |
2630 sw_name_length_3, | |
2631 sw_name_length_4, | |
2632 sw_name, | |
2633 sw_name_bytes, | |
2634 sw_value_length, | |
2635 sw_value_length_2, | |
2636 sw_value_length_3, | |
2637 sw_value_length_4, | |
2638 sw_value, | |
2639 sw_value_bytes | |
2640 } state; | |
2641 | |
2642 /* header block fragment */ | |
2643 | |
2644 #if 0 | |
2645 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2646 "grpc header fragment %p:%p rest:%uz", | |
2647 b->pos, b->last, ctx->rest); | |
2648 #endif | |
2649 | |
2650 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
2651 last = b->last; | |
2652 | |
2653 } else { | |
2654 last = b->pos + ctx->rest - ctx->padding; | |
2655 } | |
2656 | |
2657 state = ctx->fragment_state; | |
2658 | |
2659 for (p = b->pos; p < last; p++) { | |
2660 ch = *p; | |
2661 | |
2662 #if 0 | |
2663 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2664 "grpc header byte: %02Xd s:%d", ch, state); | |
2665 #endif | |
2666 | |
2667 switch (state) { | |
2668 | |
2669 case sw_start: | |
2670 ctx->index = 0; | |
2671 | |
2672 if ((ch & 0x80) == 0x80) { | |
2673 /* | |
2674 * indexed header: | |
2675 * | |
2676 * 0 1 2 3 4 5 6 7 | |
2677 * +---+---+---+---+---+---+---+---+ | |
2678 * | 1 | Index (7+) | | |
2679 * +---+---------------------------+ | |
2680 */ | |
2681 | |
2682 index = ch & ~0x80; | |
2683 | |
2684 if (index == 0 || index > 61) { | |
2685 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2686 "upstream sent invalid http2 " | |
2687 "table index: %ui", index); | |
2688 return NGX_ERROR; | |
2689 } | |
2690 | |
2691 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2692 "grpc indexed header: %ui", index); | |
2693 | |
2694 ctx->index = index; | |
2695 ctx->literal = 0; | |
2696 | |
2697 goto done; | |
2698 | |
2699 } else if ((ch & 0xc0) == 0x40) { | |
2700 /* | |
2701 * literal header with incremental indexing: | |
2702 * | |
2703 * 0 1 2 3 4 5 6 7 | |
2704 * +---+---+---+---+---+---+---+---+ | |
2705 * | 0 | 1 | Index (6+) | | |
2706 * +---+---+-----------------------+ | |
2707 * | H | Value Length (7+) | | |
2708 * +---+---------------------------+ | |
2709 * | Value String (Length octets) | | |
2710 * +-------------------------------+ | |
2711 * | |
2712 * 0 1 2 3 4 5 6 7 | |
2713 * +---+---+---+---+---+---+---+---+ | |
2714 * | 0 | 1 | 0 | | |
2715 * +---+---+-----------------------+ | |
2716 * | H | Name Length (7+) | | |
2717 * +---+---------------------------+ | |
2718 * | Name String (Length octets) | | |
2719 * +---+---------------------------+ | |
2720 * | H | Value Length (7+) | | |
2721 * +---+---------------------------+ | |
2722 * | Value String (Length octets) | | |
2723 * +-------------------------------+ | |
2724 */ | |
2725 | |
2726 index = ch & ~0xc0; | |
2727 | |
2728 if (index > 61) { | |
2729 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2730 "upstream sent invalid http2 " | |
2731 "table index: %ui", index); | |
2732 return NGX_ERROR; | |
2733 } | |
2734 | |
2735 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2736 "grpc literal header: %ui", index); | |
2737 | |
2738 if (index == 0) { | |
2739 state = sw_name_length; | |
2740 break; | |
2741 } | |
2742 | |
2743 ctx->index = index; | |
2744 ctx->literal = 1; | |
2745 | |
2746 state = sw_value_length; | |
2747 break; | |
2748 | |
2749 } else if ((ch & 0xe0) == 0x20) { | |
2750 /* | |
2751 * dynamic table size update: | |
2752 * | |
2753 * 0 1 2 3 4 5 6 7 | |
2754 * +---+---+---+---+---+---+---+---+ | |
2755 * | 0 | 0 | 1 | Max size (5+) | | |
2756 * +---+---------------------------+ | |
2757 */ | |
2758 | |
2759 size_update = ch & ~0xe0; | |
2760 | |
2761 if (size_update > 0) { | |
2762 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2763 "upstream sent invalid http2 " | |
2764 "dynamic table size update: %ui", | |
2765 size_update); | |
2766 return NGX_ERROR; | |
2767 } | |
2768 | |
2769 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2770 "grpc table size update: %ui", size_update); | |
2771 | |
2772 break; | |
2773 | |
2774 } else if ((ch & 0xf0) == 0x10) { | |
2775 /* | |
2776 * literal header field never indexed: | |
2777 * | |
2778 * 0 1 2 3 4 5 6 7 | |
2779 * +---+---+---+---+---+---+---+---+ | |
2780 * | 0 | 0 | 0 | 1 | Index (4+) | | |
2781 * +---+---+-----------------------+ | |
2782 * | H | Value Length (7+) | | |
2783 * +---+---------------------------+ | |
2784 * | Value String (Length octets) | | |
2785 * +-------------------------------+ | |
2786 * | |
2787 * 0 1 2 3 4 5 6 7 | |
2788 * +---+---+---+---+---+---+---+---+ | |
2789 * | 0 | 0 | 0 | 1 | 0 | | |
2790 * +---+---+-----------------------+ | |
2791 * | H | Name Length (7+) | | |
2792 * +---+---------------------------+ | |
2793 * | Name String (Length octets) | | |
2794 * +---+---------------------------+ | |
2795 * | H | Value Length (7+) | | |
2796 * +---+---------------------------+ | |
2797 * | Value String (Length octets) | | |
2798 * +-------------------------------+ | |
2799 */ | |
2800 | |
2801 index = ch & ~0xf0; | |
2802 | |
2803 if (index == 0x0f) { | |
2804 ctx->index = index; | |
2805 ctx->literal = 1; | |
2806 state = sw_index; | |
2807 break; | |
2808 } | |
2809 | |
2810 if (index == 0) { | |
2811 state = sw_name_length; | |
2812 break; | |
2813 } | |
2814 | |
2815 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2816 "grpc literal header never indexed: %ui", | |
2817 index); | |
2818 | |
2819 ctx->index = index; | |
2820 ctx->literal = 1; | |
2821 | |
2822 state = sw_value_length; | |
2823 break; | |
2824 | |
2825 } else if ((ch & 0xf0) == 0x00) { | |
2826 /* | |
2827 * literal header field without indexing: | |
2828 * | |
2829 * 0 1 2 3 4 5 6 7 | |
2830 * +---+---+---+---+---+---+---+---+ | |
2831 * | 0 | 0 | 0 | 0 | Index (4+) | | |
2832 * +---+---+-----------------------+ | |
2833 * | H | Value Length (7+) | | |
2834 * +---+---------------------------+ | |
2835 * | Value String (Length octets) | | |
2836 * +-------------------------------+ | |
2837 * | |
2838 * 0 1 2 3 4 5 6 7 | |
2839 * +---+---+---+---+---+---+---+---+ | |
2840 * | 0 | 0 | 0 | 0 | 0 | | |
2841 * +---+---+-----------------------+ | |
2842 * | H | Name Length (7+) | | |
2843 * +---+---------------------------+ | |
2844 * | Name String (Length octets) | | |
2845 * +---+---------------------------+ | |
2846 * | H | Value Length (7+) | | |
2847 * +---+---------------------------+ | |
2848 * | Value String (Length octets) | | |
2849 * +-------------------------------+ | |
2850 */ | |
2851 | |
2852 index = ch & ~0xf0; | |
2853 | |
2854 if (index == 0x0f) { | |
2855 ctx->index = index; | |
2856 ctx->literal = 1; | |
2857 state = sw_index; | |
2858 break; | |
2859 } | |
2860 | |
2861 if (index == 0) { | |
2862 state = sw_name_length; | |
2863 break; | |
2864 } | |
2865 | |
2866 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2867 "grpc literal header without indexing: %ui", | |
2868 index); | |
2869 | |
2870 ctx->index = index; | |
2871 ctx->literal = 1; | |
2872 | |
2873 state = sw_value_length; | |
2874 break; | |
2875 } | |
2876 | |
2877 /* not reached */ | |
2878 | |
2879 return NGX_ERROR; | |
2880 | |
2881 case sw_index: | |
2882 ctx->index = ctx->index + (ch & ~0x80); | |
2883 | |
2884 if (ch & 0x80) { | |
2885 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2886 "upstream sent http2 table index " | |
2887 "with continuation flag"); | |
2888 return NGX_ERROR; | |
2889 } | |
2890 | |
2891 if (ctx->index > 61) { | |
2892 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2893 "upstream sent invalid http2 " | |
2894 "table index: %ui", ctx->index); | |
2895 return NGX_ERROR; | |
2896 } | |
2897 | |
2898 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2899 "grpc header index: %ui", ctx->index); | |
2900 | |
2901 state = sw_value_length; | |
2902 break; | |
2903 | |
2904 case sw_name_length: | |
2905 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
2906 ctx->field_length = ch & ~0x80; | |
2907 | |
2908 if (ctx->field_length == 0x7f) { | |
2909 state = sw_name_length_2; | |
2910 break; | |
2911 } | |
2912 | |
2913 if (ctx->field_length == 0) { | |
2914 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2915 "upstream sent zero http2 " | |
2916 "header name length"); | |
2917 return NGX_ERROR; | |
2918 } | |
2919 | |
2920 state = sw_name; | |
2921 break; | |
2922 | |
2923 case sw_name_length_2: | |
2924 ctx->field_length += ch & ~0x80; | |
2925 | |
2926 if (ch & 0x80) { | |
2927 state = sw_name_length_3; | |
2928 break; | |
2929 } | |
2930 | |
2931 state = sw_name; | |
2932 break; | |
2933 | |
2934 case sw_name_length_3: | |
2935 ctx->field_length += (ch & ~0x80) << 7; | |
2936 | |
2937 if (ch & 0x80) { | |
2938 state = sw_name_length_4; | |
2939 break; | |
2940 } | |
2941 | |
2942 state = sw_name; | |
2943 break; | |
2944 | |
2945 case sw_name_length_4: | |
2946 ctx->field_length += (ch & ~0x80) << 14; | |
2947 | |
2948 if (ch & 0x80) { | |
2949 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2950 "upstream sent too large http2 " | |
2951 "header name length"); | |
2952 return NGX_ERROR; | |
2953 } | |
2954 | |
2955 state = sw_name; | |
2956 break; | |
2957 | |
2958 case sw_name: | |
2959 ctx->name.len = ctx->field_huffman ? | |
2960 ctx->field_length * 8 / 5 : ctx->field_length; | |
2961 | |
2962 ctx->name.data = ngx_pnalloc(r->pool, ctx->name.len + 1); | |
2963 if (ctx->name.data == NULL) { | |
2964 return NGX_ERROR; | |
2965 } | |
2966 | |
2967 ctx->field_end = ctx->name.data; | |
2968 ctx->field_rest = ctx->field_length; | |
2969 ctx->field_state = 0; | |
2970 | |
2971 state = sw_name_bytes; | |
2972 | |
2973 /* fall through */ | |
2974 | |
2975 case sw_name_bytes: | |
2976 | |
2977 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2978 "grpc name: len:%uz h:%d last:%uz, rest:%uz", | |
2979 ctx->field_length, | |
2980 ctx->field_huffman, | |
2981 last - p, | |
2982 ctx->rest - (p - b->pos)); | |
2983 | |
2984 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
2985 ctx->field_rest -= size; | |
2986 | |
2987 if (ctx->field_huffman) { | |
2988 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
2989 &ctx->field_end, | |
2990 ctx->field_rest == 0, | |
2991 r->connection->log) | |
2992 != NGX_OK) | |
2993 { | |
2994 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2995 "upstream sent invalid encoded header"); | |
2996 return NGX_ERROR; | |
2997 } | |
2998 | |
2999 ctx->name.len = ctx->field_end - ctx->name.data; | |
3000 ctx->name.data[ctx->name.len] = '\0'; | |
3001 | |
3002 } else { | |
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3003 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
7233 | 3004 ctx->name.data[ctx->name.len] = '\0'; |
3005 } | |
3006 | |
3007 p += size - 1; | |
3008 | |
3009 if (ctx->field_rest == 0) { | |
3010 state = sw_value_length; | |
3011 } | |
3012 | |
3013 break; | |
3014 | |
3015 case sw_value_length: | |
3016 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
3017 ctx->field_length = ch & ~0x80; | |
3018 | |
3019 if (ctx->field_length == 0x7f) { | |
3020 state = sw_value_length_2; | |
3021 break; | |
3022 } | |
3023 | |
3024 if (ctx->field_length == 0) { | |
3025 ngx_str_set(&ctx->value, ""); | |
3026 goto done; | |
3027 } | |
3028 | |
3029 state = sw_value; | |
3030 break; | |
3031 | |
3032 case sw_value_length_2: | |
3033 ctx->field_length += ch & ~0x80; | |
3034 | |
3035 if (ch & 0x80) { | |
3036 state = sw_value_length_3; | |
3037 break; | |
3038 } | |
3039 | |
3040 state = sw_value; | |
3041 break; | |
3042 | |
3043 case sw_value_length_3: | |
3044 ctx->field_length += (ch & ~0x80) << 7; | |
3045 | |
3046 if (ch & 0x80) { | |
3047 state = sw_value_length_4; | |
3048 break; | |
3049 } | |
3050 | |
3051 state = sw_value; | |
3052 break; | |
3053 | |
3054 case sw_value_length_4: | |
3055 ctx->field_length += (ch & ~0x80) << 14; | |
3056 | |
3057 if (ch & 0x80) { | |
3058 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3059 "upstream sent too large http2 " | |
3060 "header value length"); | |
3061 return NGX_ERROR; | |
3062 } | |
3063 | |
3064 state = sw_value; | |
3065 break; | |
3066 | |
3067 case sw_value: | |
3068 ctx->value.len = ctx->field_huffman ? | |
3069 ctx->field_length * 8 / 5 : ctx->field_length; | |
3070 | |
3071 ctx->value.data = ngx_pnalloc(r->pool, ctx->value.len + 1); | |
3072 if (ctx->value.data == NULL) { | |
3073 return NGX_ERROR; | |
3074 } | |
3075 | |
3076 ctx->field_end = ctx->value.data; | |
3077 ctx->field_rest = ctx->field_length; | |
3078 ctx->field_state = 0; | |
3079 | |
3080 state = sw_value_bytes; | |
3081 | |
3082 /* fall through */ | |
3083 | |
3084 case sw_value_bytes: | |
3085 | |
3086 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3087 "grpc value: len:%uz h:%d last:%uz, rest:%uz", | |
3088 ctx->field_length, | |
3089 ctx->field_huffman, | |
3090 last - p, | |
3091 ctx->rest - (p - b->pos)); | |
3092 | |
3093 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
3094 ctx->field_rest -= size; | |
3095 | |
3096 if (ctx->field_huffman) { | |
3097 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
3098 &ctx->field_end, | |
3099 ctx->field_rest == 0, | |
3100 r->connection->log) | |
3101 != NGX_OK) | |
3102 { | |
3103 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3104 "upstream sent invalid encoded header"); | |
3105 return NGX_ERROR; | |
3106 } | |
3107 | |
3108 ctx->value.len = ctx->field_end - ctx->value.data; | |
3109 ctx->value.data[ctx->value.len] = '\0'; | |
3110 | |
3111 } else { | |
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3112 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
7233 | 3113 ctx->value.data[ctx->value.len] = '\0'; |
3114 } | |
3115 | |
3116 p += size - 1; | |
3117 | |
3118 if (ctx->field_rest == 0) { | |
3119 goto done; | |
3120 } | |
3121 | |
3122 break; | |
3123 } | |
3124 | |
3125 continue; | |
3126 | |
3127 done: | |
3128 | |
3129 p++; | |
3130 ctx->rest -= p - b->pos; | |
3131 ctx->fragment_state = sw_start; | |
3132 b->pos = p; | |
3133 | |
3134 if (ctx->index) { | |
3135 ctx->name = *ngx_http_v2_get_static_name(ctx->index); | |
3136 } | |
3137 | |
3138 if (ctx->index && !ctx->literal) { | |
3139 ctx->value = *ngx_http_v2_get_static_value(ctx->index); | |
3140 } | |
3141 | |
3142 if (!ctx->index) { | |
3143 if (ngx_http_grpc_validate_header_name(r, &ctx->name) != NGX_OK) { | |
3144 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3145 "upstream sent invalid header: \"%V: %V\"", | |
3146 &ctx->name, &ctx->value); | |
3147 return NGX_ERROR; | |
3148 } | |
3149 } | |
3150 | |
3151 if (!ctx->index || ctx->literal) { | |
3152 if (ngx_http_grpc_validate_header_value(r, &ctx->value) != NGX_OK) { | |
3153 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3154 "upstream sent invalid header: \"%V: %V\"", | |
3155 &ctx->name, &ctx->value); | |
3156 return NGX_ERROR; | |
3157 } | |
3158 } | |
3159 | |
3160 return NGX_OK; | |
3161 } | |
3162 | |
3163 ctx->rest -= p - b->pos; | |
3164 ctx->fragment_state = state; | |
3165 b->pos = p; | |
3166 | |
3167 if (ctx->rest > ctx->padding) { | |
3168 return NGX_AGAIN; | |
3169 } | |
3170 | |
3171 return NGX_DONE; | |
3172 } | |
3173 | |
3174 | |
3175 static ngx_int_t | |
3176 ngx_http_grpc_validate_header_name(ngx_http_request_t *r, ngx_str_t *s) | |
3177 { | |
3178 u_char ch; | |
3179 ngx_uint_t i; | |
3180 | |
3181 for (i = 0; i < s->len; i++) { | |
3182 ch = s->data[i]; | |
3183 | |
3184 if (ch == ':' && i > 0) { | |
3185 return NGX_ERROR; | |
3186 } | |
3187 | |
3188 if (ch >= 'A' && ch <= 'Z') { | |
3189 return NGX_ERROR; | |
3190 } | |
3191 | |
3192 if (ch == '\0' || ch == CR || ch == LF) { | |
3193 return NGX_ERROR; | |
3194 } | |
3195 } | |
3196 | |
3197 return NGX_OK; | |
3198 } | |
3199 | |
3200 | |
3201 static ngx_int_t | |
3202 ngx_http_grpc_validate_header_value(ngx_http_request_t *r, ngx_str_t *s) | |
3203 { | |
3204 u_char ch; | |
3205 ngx_uint_t i; | |
3206 | |
3207 for (i = 0; i < s->len; i++) { | |
3208 ch = s->data[i]; | |
3209 | |
3210 if (ch == '\0' || ch == CR || ch == LF) { | |
3211 return NGX_ERROR; | |
3212 } | |
3213 } | |
3214 | |
3215 return NGX_OK; | |
3216 } | |
3217 | |
3218 | |
3219 static ngx_int_t | |
3220 ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3221 ngx_buf_t *b) | |
3222 { | |
3223 u_char ch, *p, *last; | |
3224 enum { | |
3225 sw_start = 0, | |
3226 sw_error_2, | |
3227 sw_error_3, | |
3228 sw_error_4 | |
3229 } state; | |
3230 | |
3231 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3232 last = b->last; | |
3233 | |
3234 } else { | |
3235 last = b->pos + ctx->rest; | |
3236 } | |
3237 | |
3238 state = ctx->frame_state; | |
3239 | |
3240 if (state == sw_start) { | |
3241 if (ctx->rest != 4) { | |
3242 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3243 "upstream sent rst stream frame " | |
3244 "with invalid length: %uz", | |
3245 ctx->rest); | |
3246 return NGX_ERROR; | |
3247 } | |
3248 } | |
3249 | |
3250 for (p = b->pos; p < last; p++) { | |
3251 ch = *p; | |
3252 | |
3253 #if 0 | |
3254 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3255 "grpc rst byte: %02Xd s:%d", ch, state); | |
3256 #endif | |
3257 | |
3258 switch (state) { | |
3259 | |
3260 case sw_start: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3261 ctx->error = (ngx_uint_t) ch << 24; |
7233 | 3262 state = sw_error_2; |
3263 break; | |
3264 | |
3265 case sw_error_2: | |
3266 ctx->error |= ch << 16; | |
3267 state = sw_error_3; | |
3268 break; | |
3269 | |
3270 case sw_error_3: | |
3271 ctx->error |= ch << 8; | |
3272 state = sw_error_4; | |
3273 break; | |
3274 | |
3275 case sw_error_4: | |
3276 ctx->error |= ch; | |
3277 state = sw_start; | |
3278 | |
3279 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3280 "grpc error: %ui", ctx->error); | |
3281 | |
3282 break; | |
3283 } | |
3284 } | |
3285 | |
3286 ctx->rest -= p - b->pos; | |
3287 ctx->frame_state = state; | |
3288 b->pos = p; | |
3289 | |
3290 if (ctx->rest > 0) { | |
3291 return NGX_AGAIN; | |
3292 } | |
3293 | |
3294 return NGX_OK; | |
3295 } | |
3296 | |
3297 | |
3298 static ngx_int_t | |
3299 ngx_http_grpc_parse_goaway(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3300 ngx_buf_t *b) | |
3301 { | |
3302 u_char ch, *p, *last; | |
3303 enum { | |
3304 sw_start = 0, | |
3305 sw_last_stream_id_2, | |
3306 sw_last_stream_id_3, | |
3307 sw_last_stream_id_4, | |
3308 sw_error, | |
3309 sw_error_2, | |
3310 sw_error_3, | |
3311 sw_error_4, | |
3312 sw_debug | |
3313 } state; | |
3314 | |
3315 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3316 last = b->last; | |
3317 | |
3318 } else { | |
3319 last = b->pos + ctx->rest; | |
3320 } | |
3321 | |
3322 state = ctx->frame_state; | |
3323 | |
3324 if (state == sw_start) { | |
3325 | |
3326 if (ctx->stream_id) { | |
3327 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3328 "upstream sent goaway frame " | |
3329 "with non-zero stream id: %ui", | |
3330 ctx->stream_id); | |
3331 return NGX_ERROR; | |
3332 } | |
3333 | |
3334 if (ctx->rest < 8) { | |
3335 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3336 "upstream sent goaway frame " | |
3337 "with invalid length: %uz", | |
3338 ctx->rest); | |
3339 return NGX_ERROR; | |
3340 } | |
3341 } | |
3342 | |
3343 for (p = b->pos; p < last; p++) { | |
3344 ch = *p; | |
3345 | |
3346 #if 0 | |
3347 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3348 "grpc goaway byte: %02Xd s:%d", ch, state); | |
3349 #endif | |
3350 | |
3351 switch (state) { | |
3352 | |
3353 case sw_start: | |
3354 ctx->stream_id = (ch & 0x7f) << 24; | |
3355 state = sw_last_stream_id_2; | |
3356 break; | |
3357 | |
3358 case sw_last_stream_id_2: | |
3359 ctx->stream_id |= ch << 16; | |
3360 state = sw_last_stream_id_3; | |
3361 break; | |
3362 | |
3363 case sw_last_stream_id_3: | |
3364 ctx->stream_id |= ch << 8; | |
3365 state = sw_last_stream_id_4; | |
3366 break; | |
3367 | |
3368 case sw_last_stream_id_4: | |
3369 ctx->stream_id |= ch; | |
3370 state = sw_error; | |
3371 break; | |
3372 | |
3373 case sw_error: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3374 ctx->error = (ngx_uint_t) ch << 24; |
7233 | 3375 state = sw_error_2; |
3376 break; | |
3377 | |
3378 case sw_error_2: | |
3379 ctx->error |= ch << 16; | |
3380 state = sw_error_3; | |
3381 break; | |
3382 | |
3383 case sw_error_3: | |
3384 ctx->error |= ch << 8; | |
3385 state = sw_error_4; | |
3386 break; | |
3387 | |
3388 case sw_error_4: | |
3389 ctx->error |= ch; | |
3390 state = sw_debug; | |
3391 break; | |
3392 | |
3393 case sw_debug: | |
3394 break; | |
3395 } | |
3396 } | |
3397 | |
3398 ctx->rest -= p - b->pos; | |
3399 ctx->frame_state = state; | |
3400 b->pos = p; | |
3401 | |
3402 if (ctx->rest > 0) { | |
3403 return NGX_AGAIN; | |
3404 } | |
3405 | |
3406 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3407 "grpc goaway: %ui, stream %ui", | |
3408 ctx->error, ctx->stream_id); | |
3409 | |
3410 ctx->state = ngx_http_grpc_st_start; | |
3411 | |
3412 return NGX_OK; | |
3413 } | |
3414 | |
3415 | |
3416 static ngx_int_t | |
3417 ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
3418 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
3419 { | |
3420 u_char ch, *p, *last; | |
3421 enum { | |
3422 sw_start = 0, | |
3423 sw_size_2, | |
3424 sw_size_3, | |
3425 sw_size_4 | |
3426 } state; | |
3427 | |
3428 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3429 last = b->last; | |
3430 | |
3431 } else { | |
3432 last = b->pos + ctx->rest; | |
3433 } | |
3434 | |
3435 state = ctx->frame_state; | |
3436 | |
3437 if (state == sw_start) { | |
3438 if (ctx->rest != 4) { | |
3439 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3440 "upstream sent window update frame " | |
3441 "with invalid length: %uz", | |
3442 ctx->rest); | |
3443 return NGX_ERROR; | |
3444 } | |
3445 } | |
3446 | |
3447 for (p = b->pos; p < last; p++) { | |
3448 ch = *p; | |
3449 | |
3450 #if 0 | |
3451 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3452 "grpc window update byte: %02Xd s:%d", ch, state); | |
3453 #endif | |
3454 | |
3455 switch (state) { | |
3456 | |
3457 case sw_start: | |
3458 ctx->window_update = (ch & 0x7f) << 24; | |
3459 state = sw_size_2; | |
3460 break; | |
3461 | |
3462 case sw_size_2: | |
3463 ctx->window_update |= ch << 16; | |
3464 state = sw_size_3; | |
3465 break; | |
3466 | |
3467 case sw_size_3: | |
3468 ctx->window_update |= ch << 8; | |
3469 state = sw_size_4; | |
3470 break; | |
3471 | |
3472 case sw_size_4: | |
3473 ctx->window_update |= ch; | |
3474 state = sw_start; | |
3475 break; | |
3476 } | |
3477 } | |
3478 | |
3479 ctx->rest -= p - b->pos; | |
3480 ctx->frame_state = state; | |
3481 b->pos = p; | |
3482 | |
3483 if (ctx->rest > 0) { | |
3484 return NGX_AGAIN; | |
3485 } | |
3486 | |
3487 ctx->state = ngx_http_grpc_st_start; | |
3488 | |
3489 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3490 "grpc window update: %ui", ctx->window_update); | |
3491 | |
3492 if (ctx->stream_id) { | |
3493 | |
3494 if (ctx->window_update > (size_t) NGX_HTTP_V2_MAX_WINDOW | |
3495 - ctx->send_window) | |
3496 { | |
3497 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3498 "upstream sent too large window update"); | |
3499 return NGX_ERROR; | |
3500 } | |
3501 | |
3502 ctx->send_window += ctx->window_update; | |
3503 | |
3504 } else { | |
3505 | |
3506 if (ctx->window_update > NGX_HTTP_V2_MAX_WINDOW | |
3507 - ctx->connection->send_window) | |
3508 { | |
3509 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3510 "upstream sent too large window update"); | |
3511 return NGX_ERROR; | |
3512 } | |
3513 | |
3514 ctx->connection->send_window += ctx->window_update; | |
3515 } | |
3516 | |
3517 return NGX_OK; | |
3518 } | |
3519 | |
3520 | |
3521 static ngx_int_t | |
3522 ngx_http_grpc_parse_settings(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3523 ngx_buf_t *b) | |
3524 { | |
3525 u_char ch, *p, *last; | |
3526 ssize_t window_update; | |
3527 enum { | |
3528 sw_start = 0, | |
3529 sw_id, | |
3530 sw_id_2, | |
3531 sw_value, | |
3532 sw_value_2, | |
3533 sw_value_3, | |
3534 sw_value_4 | |
3535 } state; | |
3536 | |
3537 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3538 last = b->last; | |
3539 | |
3540 } else { | |
3541 last = b->pos + ctx->rest; | |
3542 } | |
3543 | |
3544 state = ctx->frame_state; | |
3545 | |
3546 if (state == sw_start) { | |
3547 | |
3548 if (ctx->stream_id) { | |
3549 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3550 "upstream sent settings frame " | |
3551 "with non-zero stream id: %ui", | |
3552 ctx->stream_id); | |
3553 return NGX_ERROR; | |
3554 } | |
3555 | |
3556 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
3557 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3558 "grpc settings ack"); | |
3559 | |
3560 if (ctx->rest != 0) { | |
3561 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3562 "upstream sent settings frame " | |
3563 "with ack flag and non-zero length: %uz", | |
3564 ctx->rest); | |
3565 return NGX_ERROR; | |
3566 } | |
3567 | |
3568 ctx->state = ngx_http_grpc_st_start; | |
3569 | |
3570 return NGX_OK; | |
3571 } | |
3572 | |
3573 if (ctx->rest % 6 != 0) { | |
3574 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3575 "upstream sent settings frame " | |
3576 "with invalid length: %uz", | |
3577 ctx->rest); | |
3578 return NGX_ERROR; | |
3579 } | |
3580 } | |
3581 | |
3582 for (p = b->pos; p < last; p++) { | |
3583 ch = *p; | |
3584 | |
3585 #if 0 | |
3586 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3587 "grpc settings byte: %02Xd s:%d", ch, state); | |
3588 #endif | |
3589 | |
3590 switch (state) { | |
3591 | |
3592 case sw_start: | |
3593 case sw_id: | |
3594 ctx->setting_id = ch << 8; | |
3595 state = sw_id_2; | |
3596 break; | |
3597 | |
3598 case sw_id_2: | |
3599 ctx->setting_id |= ch; | |
3600 state = sw_value; | |
3601 break; | |
3602 | |
3603 case sw_value: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3604 ctx->setting_value = (ngx_uint_t) ch << 24; |
7233 | 3605 state = sw_value_2; |
3606 break; | |
3607 | |
3608 case sw_value_2: | |
3609 ctx->setting_value |= ch << 16; | |
3610 state = sw_value_3; | |
3611 break; | |
3612 | |
3613 case sw_value_3: | |
3614 ctx->setting_value |= ch << 8; | |
3615 state = sw_value_4; | |
3616 break; | |
3617 | |
3618 case sw_value_4: | |
3619 ctx->setting_value |= ch; | |
3620 state = sw_id; | |
3621 | |
3622 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3623 "grpc setting: %ui %ui", | |
3624 ctx->setting_id, ctx->setting_value); | |
3625 | |
3626 /* | |
3627 * The following settings are defined by the protocol: | |
3628 * | |
3629 * SETTINGS_HEADER_TABLE_SIZE, SETTINGS_ENABLE_PUSH, | |
3630 * SETTINGS_MAX_CONCURRENT_STREAMS, SETTINGS_INITIAL_WINDOW_SIZE, | |
3631 * SETTINGS_MAX_FRAME_SIZE, SETTINGS_MAX_HEADER_LIST_SIZE | |
3632 * | |
3633 * Only SETTINGS_INITIAL_WINDOW_SIZE seems to be needed in | |
3634 * a simple client. | |
3635 */ | |
3636 | |
3637 if (ctx->setting_id == 0x04) { | |
3638 /* SETTINGS_INITIAL_WINDOW_SIZE */ | |
3639 | |
3640 if (ctx->setting_value > NGX_HTTP_V2_MAX_WINDOW) { | |
3641 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3642 "upstream sent settings frame " | |
3643 "with too large initial window size: %ui", | |
3644 ctx->setting_value); | |
3645 return NGX_ERROR; | |
3646 } | |
3647 | |
3648 window_update = ctx->setting_value | |
3649 - ctx->connection->init_window; | |
3650 ctx->connection->init_window = ctx->setting_value; | |
3651 | |
3652 if (ctx->send_window > 0 | |
3653 && window_update > (ssize_t) NGX_HTTP_V2_MAX_WINDOW | |
3654 - ctx->send_window) | |
3655 { | |
3656 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3657 "upstream sent settings frame " | |
3658 "with too large initial window size: %ui", | |
3659 ctx->setting_value); | |
3660 return NGX_ERROR; | |
3661 } | |
3662 | |
3663 ctx->send_window += window_update; | |
3664 } | |
3665 | |
3666 break; | |
3667 } | |
3668 } | |
3669 | |
3670 ctx->rest -= p - b->pos; | |
3671 ctx->frame_state = state; | |
3672 b->pos = p; | |
3673 | |
3674 if (ctx->rest > 0) { | |
3675 return NGX_AGAIN; | |
3676 } | |
3677 | |
3678 ctx->state = ngx_http_grpc_st_start; | |
3679 | |
3680 return ngx_http_grpc_send_settings_ack(r, ctx); | |
3681 } | |
3682 | |
3683 | |
3684 static ngx_int_t | |
3685 ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
3686 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
3687 { | |
3688 u_char ch, *p, *last; | |
3689 enum { | |
3690 sw_start = 0, | |
3691 sw_data_2, | |
3692 sw_data_3, | |
3693 sw_data_4, | |
3694 sw_data_5, | |
3695 sw_data_6, | |
3696 sw_data_7, | |
3697 sw_data_8 | |
3698 } state; | |
3699 | |
3700 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3701 last = b->last; | |
3702 | |
3703 } else { | |
3704 last = b->pos + ctx->rest; | |
3705 } | |
3706 | |
3707 state = ctx->frame_state; | |
3708 | |
3709 if (state == sw_start) { | |
3710 | |
3711 if (ctx->stream_id) { | |
3712 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3713 "upstream sent ping frame " | |
3714 "with non-zero stream id: %ui", | |
3715 ctx->stream_id); | |
3716 return NGX_ERROR; | |
3717 } | |
3718 | |
3719 if (ctx->rest != 8) { | |
3720 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3721 "upstream sent ping frame " | |
3722 "with invalid length: %uz", | |
3723 ctx->rest); | |
3724 return NGX_ERROR; | |
3725 } | |
3726 | |
3727 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
3728 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3729 "upstream sent ping frame with ack flag"); | |
3730 return NGX_ERROR; | |
3731 } | |
3732 } | |
3733 | |
3734 for (p = b->pos; p < last; p++) { | |
3735 ch = *p; | |
3736 | |
3737 #if 0 | |
3738 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3739 "grpc ping byte: %02Xd s:%d", ch, state); | |
3740 #endif | |
3741 | |
3742 if (state < sw_data_8) { | |
3743 ctx->ping_data[state] = ch; | |
3744 state++; | |
3745 | |
3746 } else { | |
3747 ctx->ping_data[7] = ch; | |
3748 state = sw_start; | |
3749 | |
3750 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3751 "grpc ping"); | |
3752 } | |
3753 } | |
3754 | |
3755 ctx->rest -= p - b->pos; | |
3756 ctx->frame_state = state; | |
3757 b->pos = p; | |
3758 | |
3759 if (ctx->rest > 0) { | |
3760 return NGX_AGAIN; | |
3761 } | |
3762 | |
3763 ctx->state = ngx_http_grpc_st_start; | |
3764 | |
3765 return ngx_http_grpc_send_ping_ack(r, ctx); | |
3766 } | |
3767 | |
3768 | |
3769 static ngx_int_t | |
3770 ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3771 { | |
3772 ngx_chain_t *cl, **ll; | |
3773 ngx_http_grpc_frame_t *f; | |
3774 | |
3775 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3776 "grpc send settings ack"); | |
3777 | |
3778 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3779 ll = &cl->next; | |
3780 } | |
3781 | |
3782 cl = ngx_http_grpc_get_buf(r, ctx); | |
3783 if (cl == NULL) { | |
3784 return NGX_ERROR; | |
3785 } | |
3786 | |
3787 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3788 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3789 | |
3790 f->length_0 = 0; | |
3791 f->length_1 = 0; | |
3792 f->length_2 = 0; | |
3793 f->type = NGX_HTTP_V2_SETTINGS_FRAME; | |
3794 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
3795 f->stream_id_0 = 0; | |
3796 f->stream_id_1 = 0; | |
3797 f->stream_id_2 = 0; | |
3798 f->stream_id_3 = 0; | |
3799 | |
3800 *ll = cl; | |
3801 | |
3802 return NGX_OK; | |
3803 } | |
3804 | |
3805 | |
3806 static ngx_int_t | |
3807 ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3808 { | |
3809 ngx_chain_t *cl, **ll; | |
3810 ngx_http_grpc_frame_t *f; | |
3811 | |
3812 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3813 "grpc send ping ack"); | |
3814 | |
3815 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3816 ll = &cl->next; | |
3817 } | |
3818 | |
3819 cl = ngx_http_grpc_get_buf(r, ctx); | |
3820 if (cl == NULL) { | |
3821 return NGX_ERROR; | |
3822 } | |
3823 | |
3824 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3825 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3826 | |
3827 f->length_0 = 0; | |
3828 f->length_1 = 0; | |
3829 f->length_2 = 8; | |
3830 f->type = NGX_HTTP_V2_PING_FRAME; | |
3831 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
3832 f->stream_id_0 = 0; | |
3833 f->stream_id_1 = 0; | |
3834 f->stream_id_2 = 0; | |
3835 f->stream_id_3 = 0; | |
3836 | |
3837 cl->buf->last = ngx_copy(cl->buf->last, ctx->ping_data, 8); | |
3838 | |
3839 *ll = cl; | |
3840 | |
3841 return NGX_OK; | |
3842 } | |
3843 | |
3844 | |
3845 static ngx_int_t | |
3846 ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
3847 ngx_http_grpc_ctx_t *ctx) | |
3848 { | |
3849 size_t n; | |
3850 ngx_chain_t *cl, **ll; | |
3851 ngx_http_grpc_frame_t *f; | |
3852 | |
3853 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3854 "grpc send window update: %uz %uz", | |
3855 ctx->connection->recv_window, ctx->recv_window); | |
3856 | |
3857 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3858 ll = &cl->next; | |
3859 } | |
3860 | |
3861 cl = ngx_http_grpc_get_buf(r, ctx); | |
3862 if (cl == NULL) { | |
3863 return NGX_ERROR; | |
3864 } | |
3865 | |
3866 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3867 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3868 | |
3869 f->length_0 = 0; | |
3870 f->length_1 = 0; | |
3871 f->length_2 = 4; | |
3872 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
3873 f->flags = 0; | |
3874 f->stream_id_0 = 0; | |
3875 f->stream_id_1 = 0; | |
3876 f->stream_id_2 = 0; | |
3877 f->stream_id_3 = 0; | |
3878 | |
3879 n = NGX_HTTP_V2_MAX_WINDOW - ctx->connection->recv_window; | |
3880 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3881 | |
3882 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
3883 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
3884 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
3885 *cl->buf->last++ = (u_char) (n & 0xff); | |
3886 | |
3887 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3888 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3889 | |
3890 f->length_0 = 0; | |
3891 f->length_1 = 0; | |
3892 f->length_2 = 4; | |
3893 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
3894 f->flags = 0; | |
3895 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
3896 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
3897 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
3898 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
3899 | |
3900 n = NGX_HTTP_V2_MAX_WINDOW - ctx->recv_window; | |
3901 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3902 | |
3903 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
3904 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
3905 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
3906 *cl->buf->last++ = (u_char) (n & 0xff); | |
3907 | |
3908 *ll = cl; | |
3909 | |
3910 return NGX_OK; | |
3911 } | |
3912 | |
3913 | |
3914 static ngx_chain_t * | |
3915 ngx_http_grpc_get_buf(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3916 { | |
7305
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|
3917 u_char *start; |
7233 | 3918 ngx_buf_t *b; |
3919 ngx_chain_t *cl; | |
3920 | |
3921 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
3922 if (cl == NULL) { | |
3923 return NULL; | |
3924 } | |
3925 | |
3926 b = cl->buf; | |
7305
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diff
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|
3927 start = b->start; |
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3928 |
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|
3929 if (start == NULL) { |
7233 | 3930 |
3931 /* | |
3932 * each buffer is large enough to hold two window update | |
3933 * frames in a row | |
3934 */ | |
3935 | |
7305
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3936 start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8); |
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3937 if (start == NULL) { |
7233 | 3938 return NULL; |
3939 } | |
3940 | |
3941 } | |
3942 | |
7305
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|
3943 ngx_memzero(b, sizeof(ngx_buf_t)); |
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3944 |
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3945 b->start = start; |
6cfd45d4c754
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3946 b->pos = start; |
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3947 b->last = start; |
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3948 b->end = start + 2 * sizeof(ngx_http_grpc_frame_t) + 8; |
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3949 |
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3950 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; |
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3951 b->temporary = 1; |
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|
3952 b->flush = 1; |
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3953 |
7233 | 3954 return cl; |
3955 } | |
3956 | |
3957 | |
3958 static ngx_http_grpc_ctx_t * | |
3959 ngx_http_grpc_get_ctx(ngx_http_request_t *r) | |
3960 { | |
3961 ngx_http_grpc_ctx_t *ctx; | |
3962 ngx_http_upstream_t *u; | |
3963 | |
3964 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
3965 | |
3966 if (ctx->connection == NULL) { | |
3967 u = r->upstream; | |
3968 | |
3969 if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) { | |
3970 return NULL; | |
3971 } | |
3972 } | |
3973 | |
3974 return ctx; | |
3975 } | |
3976 | |
3977 | |
3978 static ngx_int_t | |
3979 ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
3980 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc) | |
3981 { | |
3982 ngx_connection_t *c; | |
3983 ngx_pool_cleanup_t *cln; | |
3984 | |
3985 c = pc->connection; | |
3986 | |
3987 if (pc->cached) { | |
3988 | |
3989 /* | |
3990 * for cached connections, connection data can be found | |
3991 * in the cleanup handler | |
3992 */ | |
3993 | |
3994 for (cln = c->pool->cleanup; cln; cln = cln->next) { | |
3995 if (cln->handler == ngx_http_grpc_cleanup) { | |
3996 ctx->connection = cln->data; | |
3997 break; | |
3998 } | |
3999 } | |
4000 | |
4001 if (ctx->connection == NULL) { | |
4002 ngx_log_error(NGX_LOG_ERR, c->log, 0, | |
4003 "no connection data found for " | |
4004 "keepalive http2 connection"); | |
4005 return NGX_ERROR; | |
4006 } | |
4007 | |
4008 ctx->send_window = ctx->connection->init_window; | |
4009 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4010 | |
4011 ctx->connection->last_stream_id += 2; | |
4012 ctx->id = ctx->connection->last_stream_id; | |
4013 | |
4014 return NGX_OK; | |
4015 } | |
4016 | |
4017 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t)); | |
4018 if (cln == NULL) { | |
4019 return NGX_ERROR; | |
4020 } | |
4021 | |
4022 cln->handler = ngx_http_grpc_cleanup; | |
4023 ctx->connection = cln->data; | |
4024 | |
4025 ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4026 ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4027 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4028 | |
4029 ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4030 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4031 | |
4032 ctx->id = 1; | |
4033 ctx->connection->last_stream_id = 1; | |
4034 | |
4035 return NGX_OK; | |
4036 } | |
4037 | |
4038 | |
4039 static void | |
4040 ngx_http_grpc_cleanup(void *data) | |
4041 { | |
4042 #if 0 | |
4043 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
4044 "grpc cleanup"); | |
4045 #endif | |
4046 return; | |
4047 } | |
4048 | |
4049 | |
4050 static void | |
4051 ngx_http_grpc_abort_request(ngx_http_request_t *r) | |
4052 { | |
4053 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
4054 "abort grpc request"); | |
4055 return; | |
4056 } | |
4057 | |
4058 | |
4059 static void | |
4060 ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
4061 { | |
4062 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
4063 "finalize grpc request"); | |
4064 return; | |
4065 } | |
4066 | |
4067 | |
7234
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4068 static ngx_int_t |
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|
4069 ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r, |
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|
4070 ngx_http_variable_value_t *v, uintptr_t data) |
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|
4071 { |
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|
4072 ngx_table_elt_t *te; |
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|
4073 |
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|
4074 te = r->headers_in.te; |
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|
4075 |
c693daca57f7
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|
4076 if (te == NULL) { |
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|
4077 v->not_found = 1; |
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|
4078 return NGX_OK; |
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|
4079 } |
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|
4080 |
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|
4081 if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len, |
c693daca57f7
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|
4082 (u_char *) "trailers", 8 - 1) |
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|
4083 == NULL) |
c693daca57f7
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|
4084 { |
c693daca57f7
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changeset
|
4085 v->not_found = 1; |
c693daca57f7
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|
4086 return NGX_OK; |
c693daca57f7
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|
4087 } |
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|
4088 |
c693daca57f7
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|
4089 v->valid = 1; |
c693daca57f7
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7233
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changeset
|
4090 v->no_cacheable = 0; |
c693daca57f7
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7233
diff
changeset
|
4091 v->not_found = 0; |
c693daca57f7
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|
4092 |
c693daca57f7
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|
4093 v->data = (u_char *) "trailers"; |
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7233
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changeset
|
4094 v->len = sizeof("trailers") - 1; |
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|
4095 |
c693daca57f7
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|
4096 return NGX_OK; |
c693daca57f7
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|
4097 } |
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|
4098 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4099 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4100 static ngx_int_t |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4101 ngx_http_grpc_add_variables(ngx_conf_t *cf) |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4102 { |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4103 ngx_http_variable_t *var, *v; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4104 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4105 for (v = ngx_http_grpc_vars; v->name.len; v++) { |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4106 var = ngx_http_add_variable(cf, &v->name, v->flags); |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4107 if (var == NULL) { |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4108 return NGX_ERROR; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4109 } |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4110 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4111 var->get_handler = v->get_handler; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4112 var->data = v->data; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4113 } |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4114 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4115 return NGX_OK; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4116 } |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4117 |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
4118 |
7233 | 4119 static void * |
4120 ngx_http_grpc_create_loc_conf(ngx_conf_t *cf) | |
4121 { | |
4122 ngx_http_grpc_loc_conf_t *conf; | |
4123 | |
4124 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t)); | |
4125 if (conf == NULL) { | |
4126 return NULL; | |
4127 } | |
4128 | |
4129 /* | |
4130 * set by ngx_pcalloc(): | |
4131 * | |
4132 * conf->upstream.ignore_headers = 0; | |
4133 * conf->upstream.next_upstream = 0; | |
4134 * conf->upstream.hide_headers_hash = { NULL, 0 }; | |
4135 * conf->upstream.ssl_name = NULL; | |
4136 * | |
4137 * conf->headers_source = NULL; | |
4138 * conf->headers.lengths = NULL; | |
4139 * conf->headers.values = NULL; | |
4140 * conf->headers.hash = { NULL, 0 }; | |
4141 * conf->host = { 0, NULL }; | |
4142 * conf->host_set = 0; | |
4143 * conf->ssl = 0; | |
4144 * conf->ssl_protocols = 0; | |
4145 * conf->ssl_ciphers = { 0, NULL }; | |
4146 * conf->ssl_trusted_certificate = { 0, NULL }; | |
4147 * conf->ssl_crl = { 0, NULL }; | |
4148 * conf->ssl_certificate = { 0, NULL }; | |
4149 * conf->ssl_certificate_key = { 0, NULL }; | |
4150 */ | |
4151 | |
4152 conf->upstream.local = NGX_CONF_UNSET_PTR; | |
4153 conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; | |
4154 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
4155 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
4156 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
4157 conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
4158 | |
4159 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
4160 | |
4161 conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; | |
4162 conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; | |
4163 | |
4164 conf->upstream.intercept_errors = NGX_CONF_UNSET; | |
4165 | |
4166 #if (NGX_HTTP_SSL) | |
4167 conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; | |
4168 conf->upstream.ssl_server_name = NGX_CONF_UNSET; | |
4169 conf->upstream.ssl_verify = NGX_CONF_UNSET; | |
4170 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
4171 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
4172 #endif | |
4173 | |
4174 /* the hardcoded values */ | |
4175 conf->upstream.cyclic_temp_file = 0; | |
4176 conf->upstream.buffering = 0; | |
4177 conf->upstream.ignore_client_abort = 0; | |
4178 conf->upstream.send_lowat = 0; | |
4179 conf->upstream.bufs.num = 0; | |
4180 conf->upstream.busy_buffers_size = 0; | |
4181 conf->upstream.max_temp_file_size = 0; | |
4182 conf->upstream.temp_file_write_size = 0; | |
4183 conf->upstream.pass_request_headers = 1; | |
4184 conf->upstream.pass_request_body = 1; | |
4185 conf->upstream.force_ranges = 0; | |
4186 conf->upstream.pass_trailers = 1; | |
4187 conf->upstream.preserve_output = 1; | |
4188 | |
4189 ngx_str_set(&conf->upstream.module, "grpc"); | |
4190 | |
4191 return conf; | |
4192 } | |
4193 | |
4194 | |
4195 static char * | |
4196 ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
4197 { | |
4198 ngx_http_grpc_loc_conf_t *prev = parent; | |
4199 ngx_http_grpc_loc_conf_t *conf = child; | |
4200 | |
4201 ngx_int_t rc; | |
4202 ngx_hash_init_t hash; | |
4203 ngx_http_core_loc_conf_t *clcf; | |
4204 | |
4205 ngx_conf_merge_ptr_value(conf->upstream.local, | |
4206 prev->upstream.local, NULL); | |
4207 | |
4208 ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, | |
4209 prev->upstream.next_upstream_tries, 0); | |
4210 | |
4211 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
4212 prev->upstream.connect_timeout, 60000); | |
4213 | |
4214 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
4215 prev->upstream.send_timeout, 60000); | |
4216 | |
4217 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
4218 prev->upstream.read_timeout, 60000); | |
4219 | |
4220 ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, | |
4221 prev->upstream.next_upstream_timeout, 0); | |
4222 | |
4223 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
4224 prev->upstream.buffer_size, | |
4225 (size_t) ngx_pagesize); | |
4226 | |
4227 ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, | |
4228 prev->upstream.ignore_headers, | |
4229 NGX_CONF_BITMASK_SET); | |
4230 | |
4231 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
4232 prev->upstream.next_upstream, | |
4233 (NGX_CONF_BITMASK_SET | |
4234 |NGX_HTTP_UPSTREAM_FT_ERROR | |
4235 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
4236 | |
4237 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { | |
4238 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
4239 |NGX_HTTP_UPSTREAM_FT_OFF; | |
4240 } | |
4241 | |
4242 ngx_conf_merge_value(conf->upstream.intercept_errors, | |
4243 prev->upstream.intercept_errors, 0); | |
4244 | |
4245 #if (NGX_HTTP_SSL) | |
4246 | |
4247 ngx_conf_merge_value(conf->upstream.ssl_session_reuse, | |
4248 prev->upstream.ssl_session_reuse, 1); | |
4249 | |
4250 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
4251 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 | |
4252 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); | |
4253 | |
4254 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, | |
4255 "DEFAULT"); | |
4256 | |
4257 if (conf->upstream.ssl_name == NULL) { | |
4258 conf->upstream.ssl_name = prev->upstream.ssl_name; | |
4259 } | |
4260 | |
4261 ngx_conf_merge_value(conf->upstream.ssl_server_name, | |
4262 prev->upstream.ssl_server_name, 0); | |
4263 ngx_conf_merge_value(conf->upstream.ssl_verify, | |
4264 prev->upstream.ssl_verify, 0); | |
4265 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
4266 prev->ssl_verify_depth, 1); | |
4267 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
4268 prev->ssl_trusted_certificate, ""); | |
4269 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
4270 | |
4271 ngx_conf_merge_str_value(conf->ssl_certificate, | |
4272 prev->ssl_certificate, ""); | |
4273 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
4274 prev->ssl_certificate_key, ""); | |
4275 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
4276 | |
4277 if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) { | |
4278 return NGX_CONF_ERROR; | |
4279 } | |
4280 | |
4281 #endif | |
4282 | |
4283 hash.max_size = 512; | |
4284 hash.bucket_size = ngx_align(64, ngx_cacheline_size); | |
4285 hash.name = "grpc_headers_hash"; | |
4286 | |
4287 if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, | |
4288 &prev->upstream, ngx_http_grpc_hide_headers, &hash) | |
4289 != NGX_OK) | |
4290 { | |
4291 return NGX_CONF_ERROR; | |
4292 } | |
4293 | |
4294 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
4295 | |
4296 if (clcf->noname && conf->upstream.upstream == NULL) { | |
4297 conf->upstream.upstream = prev->upstream.upstream; | |
4298 conf->host = prev->host; | |
4299 #if (NGX_HTTP_SSL) | |
4300 conf->upstream.ssl = prev->upstream.ssl; | |
4301 #endif | |
4302 } | |
4303 | |
4304 if (clcf->lmt_excpt && clcf->handler == NULL && conf->upstream.upstream) { | |
4305 clcf->handler = ngx_http_grpc_handler; | |
4306 } | |
4307 | |
4308 if (conf->headers_source == NULL) { | |
4309 conf->headers = prev->headers; | |
4310 conf->headers_source = prev->headers_source; | |
4311 conf->host_set = prev->host_set; | |
4312 } | |
4313 | |
4314 rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers, | |
4315 ngx_http_grpc_headers); | |
4316 if (rc != NGX_OK) { | |
4317 return NGX_CONF_ERROR; | |
4318 } | |
4319 | |
4320 /* | |
4321 * special handling to preserve conf->headers in the "http" section | |
4322 * to inherit it to all servers | |
4323 */ | |
4324 | |
4325 if (prev->headers.hash.buckets == NULL | |
4326 && conf->headers_source == prev->headers_source) | |
4327 { | |
4328 prev->headers = conf->headers; | |
4329 prev->host_set = conf->host_set; | |
4330 } | |
4331 | |
4332 return NGX_CONF_OK; | |
4333 } | |
4334 | |
4335 | |
4336 static ngx_int_t | |
4337 ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf, | |
4338 ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers) | |
4339 { | |
4340 u_char *p; | |
4341 size_t size; | |
4342 uintptr_t *code; | |
4343 ngx_uint_t i; | |
4344 ngx_array_t headers_names, headers_merged; | |
4345 ngx_keyval_t *src, *s, *h; | |
4346 ngx_hash_key_t *hk; | |
4347 ngx_hash_init_t hash; | |
4348 ngx_http_script_compile_t sc; | |
4349 ngx_http_script_copy_code_t *copy; | |
4350 | |
4351 if (headers->hash.buckets) { | |
4352 return NGX_OK; | |
4353 } | |
4354 | |
4355 if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) | |
4356 != NGX_OK) | |
4357 { | |
4358 return NGX_ERROR; | |
4359 } | |
4360 | |
4361 if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) | |
4362 != NGX_OK) | |
4363 { | |
4364 return NGX_ERROR; | |
4365 } | |
4366 | |
4367 headers->lengths = ngx_array_create(cf->pool, 64, 1); | |
4368 if (headers->lengths == NULL) { | |
4369 return NGX_ERROR; | |
4370 } | |
4371 | |
4372 headers->values = ngx_array_create(cf->pool, 512, 1); | |
4373 if (headers->values == NULL) { | |
4374 return NGX_ERROR; | |
4375 } | |
4376 | |
4377 if (conf->headers_source) { | |
4378 | |
4379 src = conf->headers_source->elts; | |
4380 for (i = 0; i < conf->headers_source->nelts; i++) { | |
4381 | |
4382 if (src[i].key.len == 4 | |
4383 && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0) | |
4384 { | |
4385 conf->host_set = 1; | |
4386 } | |
4387 | |
4388 s = ngx_array_push(&headers_merged); | |
4389 if (s == NULL) { | |
4390 return NGX_ERROR; | |
4391 } | |
4392 | |
4393 *s = src[i]; | |
4394 } | |
4395 } | |
4396 | |
4397 h = default_headers; | |
4398 | |
4399 while (h->key.len) { | |
4400 | |
4401 src = headers_merged.elts; | |
4402 for (i = 0; i < headers_merged.nelts; i++) { | |
4403 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { | |
4404 goto next; | |
4405 } | |
4406 } | |
4407 | |
4408 s = ngx_array_push(&headers_merged); | |
4409 if (s == NULL) { | |
4410 return NGX_ERROR; | |
4411 } | |
4412 | |
4413 *s = *h; | |
4414 | |
4415 next: | |
4416 | |
4417 h++; | |
4418 } | |
4419 | |
4420 | |
4421 src = headers_merged.elts; | |
4422 for (i = 0; i < headers_merged.nelts; i++) { | |
4423 | |
4424 hk = ngx_array_push(&headers_names); | |
4425 if (hk == NULL) { | |
4426 return NGX_ERROR; | |
4427 } | |
4428 | |
4429 hk->key = src[i].key; | |
4430 hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); | |
4431 hk->value = (void *) 1; | |
4432 | |
4433 if (src[i].value.len == 0) { | |
4434 continue; | |
4435 } | |
4436 | |
4437 copy = ngx_array_push_n(headers->lengths, | |
4438 sizeof(ngx_http_script_copy_code_t)); | |
4439 if (copy == NULL) { | |
4440 return NGX_ERROR; | |
4441 } | |
4442 | |
7271
9e25a5380a21
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7249
diff
changeset
|
4443 copy->code = (ngx_http_script_code_pt) (void *) |
9e25a5380a21
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7249
diff
changeset
|
4444 ngx_http_script_copy_len_code; |
7233 | 4445 copy->len = src[i].key.len; |
4446 | |
4447 size = (sizeof(ngx_http_script_copy_code_t) | |
4448 + src[i].key.len + sizeof(uintptr_t) - 1) | |
4449 & ~(sizeof(uintptr_t) - 1); | |
4450 | |
4451 copy = ngx_array_push_n(headers->values, size); | |
4452 if (copy == NULL) { | |
4453 return NGX_ERROR; | |
4454 } | |
4455 | |
4456 copy->code = ngx_http_script_copy_code; | |
4457 copy->len = src[i].key.len; | |
4458 | |
4459 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); | |
4460 ngx_memcpy(p, src[i].key.data, src[i].key.len); | |
4461 | |
4462 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
4463 | |
4464 sc.cf = cf; | |
4465 sc.source = &src[i].value; | |
4466 sc.flushes = &headers->flushes; | |
4467 sc.lengths = &headers->lengths; | |
4468 sc.values = &headers->values; | |
4469 | |
4470 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
4471 return NGX_ERROR; | |
4472 } | |
4473 | |
4474 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
4475 if (code == NULL) { | |
4476 return NGX_ERROR; | |
4477 } | |
4478 | |
4479 *code = (uintptr_t) NULL; | |
4480 | |
4481 code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); | |
4482 if (code == NULL) { | |
4483 return NGX_ERROR; | |
4484 } | |
4485 | |
4486 *code = (uintptr_t) NULL; | |
4487 } | |
4488 | |
4489 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
4490 if (code == NULL) { | |
4491 return NGX_ERROR; | |
4492 } | |
4493 | |
4494 *code = (uintptr_t) NULL; | |
4495 | |
4496 | |
4497 hash.hash = &headers->hash; | |
4498 hash.key = ngx_hash_key_lc; | |
4499 hash.max_size = 512; | |
4500 hash.bucket_size = 64; | |
4501 hash.name = "grpc_headers_hash"; | |
4502 hash.pool = cf->pool; | |
4503 hash.temp_pool = NULL; | |
4504 | |
4505 return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); | |
4506 } | |
4507 | |
4508 | |
4509 static char * | |
4510 ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
4511 { | |
4512 ngx_http_grpc_loc_conf_t *glcf = conf; | |
4513 | |
4514 size_t add; | |
4515 ngx_str_t *value, *url; | |
4516 ngx_url_t u; | |
4517 ngx_http_core_loc_conf_t *clcf; | |
4518 | |
4519 if (glcf->upstream.upstream) { | |
4520 return "is duplicate"; | |
4521 } | |
4522 | |
4523 value = cf->args->elts; | |
4524 url = &value[1]; | |
4525 | |
4526 if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) { | |
4527 add = 7; | |
4528 | |
4529 } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) { | |
4530 | |
4531 #if (NGX_HTTP_SSL) | |
4532 glcf->ssl = 1; | |
4533 | |
4534 add = 8; | |
4535 #else | |
4536 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
4537 "grpcs protocol requires SSL support"); | |
4538 return NGX_CONF_ERROR; | |
4539 #endif | |
4540 | |
4541 } else { | |
4542 add = 0; | |
4543 } | |
4544 | |
4545 ngx_memzero(&u, sizeof(ngx_url_t)); | |
4546 | |
4547 u.url.len = url->len - add; | |
4548 u.url.data = url->data + add; | |
4549 u.no_resolve = 1; | |
4550 | |
4551 glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); | |
4552 if (glcf->upstream.upstream == NULL) { | |
4553 return NGX_CONF_ERROR; | |
4554 } | |
4555 | |
4556 if (u.family != AF_UNIX) { | |
4557 | |
4558 if (u.no_port) { | |
4559 glcf->host = u.host; | |
4560 | |
4561 } else { | |
4562 glcf->host.len = u.host.len + 1 + u.port_text.len; | |
4563 glcf->host.data = u.host.data; | |
4564 } | |
4565 | |
4566 } else { | |
4567 ngx_str_set(&glcf->host, "localhost"); | |
4568 } | |
4569 | |
4570 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
4571 | |
4572 clcf->handler = ngx_http_grpc_handler; | |
4573 | |
7321
45e513c3540d
Fixed invalid access to location defined as an empty string.
Ruslan Ermilov <ru@nginx.com>
parents:
7320
diff
changeset
|
4574 if (clcf->name.len && clcf->name.data[clcf->name.len - 1] == '/') { |
7233 | 4575 clcf->auto_redirect = 1; |
4576 } | |
4577 | |
4578 return NGX_CONF_OK; | |
4579 } | |
4580 | |
4581 | |
4582 #if (NGX_HTTP_SSL) | |
4583 | |
4584 static char * | |
4585 ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
4586 { | |
4587 ngx_http_grpc_loc_conf_t *glcf = conf; | |
4588 | |
4589 ngx_str_t *value; | |
4590 | |
4591 if (glcf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
4592 return "is duplicate"; | |
4593 } | |
4594 | |
4595 value = cf->args->elts; | |
4596 | |
4597 glcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
4598 | |
4599 if (glcf->ssl_passwords == NULL) { | |
4600 return NGX_CONF_ERROR; | |
4601 } | |
4602 | |
4603 return NGX_CONF_OK; | |
4604 } | |
4605 | |
4606 | |
4607 static ngx_int_t | |
4608 ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf) | |
4609 { | |
4610 ngx_pool_cleanup_t *cln; | |
4611 | |
4612 glcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
4613 if (glcf->upstream.ssl == NULL) { | |
4614 return NGX_ERROR; | |
4615 } | |
4616 | |
4617 glcf->upstream.ssl->log = cf->log; | |
4618 | |
4619 if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL) | |
4620 != NGX_OK) | |
4621 { | |
4622 return NGX_ERROR; | |
4623 } | |
4624 | |
4625 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
4626 if (cln == NULL) { | |
4627 return NGX_ERROR; | |
4628 } | |
4629 | |
4630 cln->handler = ngx_ssl_cleanup_ctx; | |
4631 cln->data = glcf->upstream.ssl; | |
4632 | |
4633 if (glcf->ssl_certificate.len) { | |
4634 | |
4635 if (glcf->ssl_certificate_key.len == 0) { | |
4636 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
4637 "no \"grpc_ssl_certificate_key\" is defined " | |
4638 "for certificate \"%V\"", &glcf->ssl_certificate); | |
4639 return NGX_ERROR; | |
4640 } | |
4641 | |
4642 if (ngx_ssl_certificate(cf, glcf->upstream.ssl, &glcf->ssl_certificate, | |
4643 &glcf->ssl_certificate_key, glcf->ssl_passwords) | |
4644 != NGX_OK) | |
4645 { | |
4646 return NGX_ERROR; | |
4647 } | |
4648 } | |
4649 | |
4650 if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0) | |
4651 != NGX_OK) | |
4652 { | |
4653 return NGX_ERROR; | |
4654 } | |
4655 | |
4656 if (glcf->upstream.ssl_verify) { | |
4657 if (glcf->ssl_trusted_certificate.len == 0) { | |
4658 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
4659 "no grpc_ssl_trusted_certificate for grpc_ssl_verify"); | |
4660 return NGX_ERROR; | |
4661 } | |
4662 | |
4663 if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl, | |
4664 &glcf->ssl_trusted_certificate, | |
4665 glcf->ssl_verify_depth) | |
4666 != NGX_OK) | |
4667 { | |
4668 return NGX_ERROR; | |
4669 } | |
4670 | |
4671 if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) { | |
4672 return NGX_ERROR; | |
4673 } | |
4674 } | |
4675 | |
7320
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4676 if (ngx_ssl_client_session_cache(cf, glcf->upstream.ssl, |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4677 glcf->upstream.ssl_session_reuse) |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4678 != NGX_OK) |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4679 { |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4680 return NGX_ERROR; |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4681 } |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4682 |
7233 | 4683 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation |
4684 | |
4685 if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx, | |
4686 (u_char *) "\x02h2", 3) | |
4687 != 0) | |
4688 { | |
4689 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
4690 "SSL_CTX_set_alpn_protos() failed"); | |
4691 return NGX_ERROR; | |
4692 } | |
4693 | |
4694 #endif | |
4695 | |
4696 return NGX_OK; | |
4697 } | |
4698 | |
4699 #endif |