Mercurial > hg > nginx
annotate src/http/modules/ngx_http_grpc_module.c @ 7417:dc69f7aa6ca6 stable-1.14
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 | c948804cd628 |
children |
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 | |
7387
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
81 ngx_uint_t pings; |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
82 ngx_uint_t settings; |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
83 |
7233 | 84 ssize_t send_window; |
85 size_t recv_window; | |
86 | |
87 size_t rest; | |
88 ngx_uint_t stream_id; | |
89 u_char type; | |
90 u_char flags; | |
91 u_char padding; | |
92 | |
93 ngx_uint_t error; | |
94 ngx_uint_t window_update; | |
95 | |
96 ngx_uint_t setting_id; | |
97 ngx_uint_t setting_value; | |
98 | |
99 u_char ping_data[8]; | |
100 | |
101 ngx_uint_t index; | |
102 ngx_str_t name; | |
103 ngx_str_t value; | |
104 | |
105 u_char *field_end; | |
106 size_t field_length; | |
107 size_t field_rest; | |
108 u_char field_state; | |
109 | |
110 unsigned literal:1; | |
111 unsigned field_huffman:1; | |
112 | |
113 unsigned header_sent:1; | |
114 unsigned output_closed:1; | |
7417
dc69f7aa6ca6
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7416
diff
changeset
|
115 unsigned output_blocked:1; |
7233 | 116 unsigned parsing_headers:1; |
117 unsigned end_stream:1; | |
7416
c948804cd628
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7410
diff
changeset
|
118 unsigned done:1; |
7233 | 119 unsigned status:1; |
120 | |
121 ngx_http_request_t *request; | |
122 } ngx_http_grpc_ctx_t; | |
123 | |
124 | |
125 typedef struct { | |
126 u_char length_0; | |
127 u_char length_1; | |
128 u_char length_2; | |
129 u_char type; | |
130 u_char flags; | |
131 u_char stream_id_0; | |
132 u_char stream_id_1; | |
133 u_char stream_id_2; | |
134 u_char stream_id_3; | |
135 } ngx_http_grpc_frame_t; | |
136 | |
137 | |
138 static ngx_int_t ngx_http_grpc_create_request(ngx_http_request_t *r); | |
139 static ngx_int_t ngx_http_grpc_reinit_request(ngx_http_request_t *r); | |
140 static ngx_int_t ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in); | |
141 static ngx_int_t ngx_http_grpc_process_header(ngx_http_request_t *r); | |
142 static ngx_int_t ngx_http_grpc_filter_init(void *data); | |
143 static ngx_int_t ngx_http_grpc_filter(void *data, ssize_t bytes); | |
144 | |
145 static ngx_int_t ngx_http_grpc_parse_frame(ngx_http_request_t *r, | |
146 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
147 static ngx_int_t ngx_http_grpc_parse_header(ngx_http_request_t *r, | |
148 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
149 static ngx_int_t ngx_http_grpc_parse_fragment(ngx_http_request_t *r, | |
150 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
151 static ngx_int_t ngx_http_grpc_validate_header_name(ngx_http_request_t *r, | |
152 ngx_str_t *s); | |
153 static ngx_int_t ngx_http_grpc_validate_header_value(ngx_http_request_t *r, | |
154 ngx_str_t *s); | |
155 static ngx_int_t ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, | |
156 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
157 static ngx_int_t ngx_http_grpc_parse_goaway(ngx_http_request_t *r, | |
158 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
159 static ngx_int_t ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
160 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
161 static ngx_int_t ngx_http_grpc_parse_settings(ngx_http_request_t *r, | |
162 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
163 static ngx_int_t ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
164 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
165 | |
166 static ngx_int_t ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, | |
167 ngx_http_grpc_ctx_t *ctx); | |
168 static ngx_int_t ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, | |
169 ngx_http_grpc_ctx_t *ctx); | |
170 static ngx_int_t ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
171 ngx_http_grpc_ctx_t *ctx); | |
172 | |
173 static ngx_chain_t *ngx_http_grpc_get_buf(ngx_http_request_t *r, | |
174 ngx_http_grpc_ctx_t *ctx); | |
175 static ngx_http_grpc_ctx_t *ngx_http_grpc_get_ctx(ngx_http_request_t *r); | |
176 static ngx_int_t ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
177 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc); | |
178 static void ngx_http_grpc_cleanup(void *data); | |
179 | |
180 static void ngx_http_grpc_abort_request(ngx_http_request_t *r); | |
181 static void ngx_http_grpc_finalize_request(ngx_http_request_t *r, | |
182 ngx_int_t rc); | |
183 | |
7234
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_internal_trailers_variable( |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
185 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
|
186 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
187 static ngx_int_t ngx_http_grpc_add_variables(ngx_conf_t *cf); |
7233 | 188 static void *ngx_http_grpc_create_loc_conf(ngx_conf_t *cf); |
189 static char *ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, | |
190 void *parent, void *child); | |
191 static ngx_int_t ngx_http_grpc_init_headers(ngx_conf_t *cf, | |
192 ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_headers_t *headers, | |
193 ngx_keyval_t *default_headers); | |
194 | |
195 static char *ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
196 void *conf); | |
197 | |
198 #if (NGX_HTTP_SSL) | |
199 static char *ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, | |
200 ngx_command_t *cmd, void *conf); | |
201 static ngx_int_t ngx_http_grpc_set_ssl(ngx_conf_t *cf, | |
202 ngx_http_grpc_loc_conf_t *glcf); | |
203 #endif | |
204 | |
205 | |
206 static ngx_conf_bitmask_t ngx_http_grpc_next_upstream_masks[] = { | |
207 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
208 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
209 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
210 { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT }, | |
211 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, | |
212 { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 }, | |
213 { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, | |
214 { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 }, | |
215 { ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 }, | |
216 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
217 { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 }, | |
218 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, | |
219 { ngx_null_string, 0 } | |
220 }; | |
221 | |
222 | |
223 #if (NGX_HTTP_SSL) | |
224 | |
225 static ngx_conf_bitmask_t ngx_http_grpc_ssl_protocols[] = { | |
226 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
227 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
228 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
229 { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, | |
230 { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, | |
231 { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, | |
232 { ngx_null_string, 0 } | |
233 }; | |
234 | |
235 #endif | |
236 | |
237 | |
238 static ngx_command_t ngx_http_grpc_commands[] = { | |
239 | |
240 { ngx_string("grpc_pass"), | |
241 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
242 ngx_http_grpc_pass, | |
243 NGX_HTTP_LOC_CONF_OFFSET, | |
244 0, | |
245 NULL }, | |
246 | |
247 { ngx_string("grpc_bind"), | |
248 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, | |
249 ngx_http_upstream_bind_set_slot, | |
250 NGX_HTTP_LOC_CONF_OFFSET, | |
251 offsetof(ngx_http_grpc_loc_conf_t, upstream.local), | |
252 NULL }, | |
253 | |
254 { ngx_string("grpc_connect_timeout"), | |
255 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
256 ngx_conf_set_msec_slot, | |
257 NGX_HTTP_LOC_CONF_OFFSET, | |
258 offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout), | |
259 NULL }, | |
260 | |
261 { ngx_string("grpc_send_timeout"), | |
262 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
263 ngx_conf_set_msec_slot, | |
264 NGX_HTTP_LOC_CONF_OFFSET, | |
265 offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout), | |
266 NULL }, | |
267 | |
268 { ngx_string("grpc_intercept_errors"), | |
269 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
270 ngx_conf_set_flag_slot, | |
271 NGX_HTTP_LOC_CONF_OFFSET, | |
272 offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors), | |
273 NULL }, | |
274 | |
275 { ngx_string("grpc_buffer_size"), | |
276 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
277 ngx_conf_set_size_slot, | |
278 NGX_HTTP_LOC_CONF_OFFSET, | |
279 offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size), | |
280 NULL }, | |
281 | |
282 { ngx_string("grpc_read_timeout"), | |
283 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
284 ngx_conf_set_msec_slot, | |
285 NGX_HTTP_LOC_CONF_OFFSET, | |
286 offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout), | |
287 NULL }, | |
288 | |
289 { ngx_string("grpc_next_upstream"), | |
290 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
291 ngx_conf_set_bitmask_slot, | |
292 NGX_HTTP_LOC_CONF_OFFSET, | |
293 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream), | |
294 &ngx_http_grpc_next_upstream_masks }, | |
295 | |
296 { ngx_string("grpc_next_upstream_tries"), | |
297 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
298 ngx_conf_set_num_slot, | |
299 NGX_HTTP_LOC_CONF_OFFSET, | |
300 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries), | |
301 NULL }, | |
302 | |
303 { ngx_string("grpc_next_upstream_timeout"), | |
304 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
305 ngx_conf_set_msec_slot, | |
306 NGX_HTTP_LOC_CONF_OFFSET, | |
307 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout), | |
308 NULL }, | |
309 | |
310 { ngx_string("grpc_set_header"), | |
311 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
312 ngx_conf_set_keyval_slot, | |
313 NGX_HTTP_LOC_CONF_OFFSET, | |
314 offsetof(ngx_http_grpc_loc_conf_t, headers_source), | |
315 NULL }, | |
316 | |
317 { ngx_string("grpc_pass_header"), | |
318 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
319 ngx_conf_set_str_array_slot, | |
320 NGX_HTTP_LOC_CONF_OFFSET, | |
321 offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers), | |
322 NULL }, | |
323 | |
324 { ngx_string("grpc_hide_header"), | |
325 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
326 ngx_conf_set_str_array_slot, | |
327 NGX_HTTP_LOC_CONF_OFFSET, | |
328 offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers), | |
329 NULL }, | |
330 | |
331 { ngx_string("grpc_ignore_headers"), | |
332 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
333 ngx_conf_set_bitmask_slot, | |
334 NGX_HTTP_LOC_CONF_OFFSET, | |
335 offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers), | |
336 &ngx_http_upstream_ignore_headers_masks }, | |
337 | |
338 #if (NGX_HTTP_SSL) | |
339 | |
340 { ngx_string("grpc_ssl_session_reuse"), | |
341 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
342 ngx_conf_set_flag_slot, | |
343 NGX_HTTP_LOC_CONF_OFFSET, | |
344 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse), | |
345 NULL }, | |
346 | |
347 { ngx_string("grpc_ssl_protocols"), | |
348 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
349 ngx_conf_set_bitmask_slot, | |
350 NGX_HTTP_LOC_CONF_OFFSET, | |
351 offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols), | |
352 &ngx_http_grpc_ssl_protocols }, | |
353 | |
354 { ngx_string("grpc_ssl_ciphers"), | |
355 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
356 ngx_conf_set_str_slot, | |
357 NGX_HTTP_LOC_CONF_OFFSET, | |
358 offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers), | |
359 NULL }, | |
360 | |
361 { ngx_string("grpc_ssl_name"), | |
362 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
363 ngx_http_set_complex_value_slot, | |
364 NGX_HTTP_LOC_CONF_OFFSET, | |
365 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name), | |
366 NULL }, | |
367 | |
368 { ngx_string("grpc_ssl_server_name"), | |
369 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
370 ngx_conf_set_flag_slot, | |
371 NGX_HTTP_LOC_CONF_OFFSET, | |
372 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name), | |
373 NULL }, | |
374 | |
375 { ngx_string("grpc_ssl_verify"), | |
376 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
377 ngx_conf_set_flag_slot, | |
378 NGX_HTTP_LOC_CONF_OFFSET, | |
379 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify), | |
380 NULL }, | |
381 | |
382 { ngx_string("grpc_ssl_verify_depth"), | |
383 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
384 ngx_conf_set_num_slot, | |
385 NGX_HTTP_LOC_CONF_OFFSET, | |
386 offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth), | |
387 NULL }, | |
388 | |
389 { ngx_string("grpc_ssl_trusted_certificate"), | |
390 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
391 ngx_conf_set_str_slot, | |
392 NGX_HTTP_LOC_CONF_OFFSET, | |
393 offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate), | |
394 NULL }, | |
395 | |
396 { ngx_string("grpc_ssl_crl"), | |
397 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
398 ngx_conf_set_str_slot, | |
399 NGX_HTTP_LOC_CONF_OFFSET, | |
400 offsetof(ngx_http_grpc_loc_conf_t, ssl_crl), | |
401 NULL }, | |
402 | |
403 { ngx_string("grpc_ssl_certificate"), | |
404 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
405 ngx_conf_set_str_slot, | |
406 NGX_HTTP_LOC_CONF_OFFSET, | |
407 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate), | |
408 NULL }, | |
409 | |
410 { ngx_string("grpc_ssl_certificate_key"), | |
411 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
412 ngx_conf_set_str_slot, | |
413 NGX_HTTP_LOC_CONF_OFFSET, | |
414 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate_key), | |
415 NULL }, | |
416 | |
417 { ngx_string("grpc_ssl_password_file"), | |
418 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
419 ngx_http_grpc_ssl_password_file, | |
420 NGX_HTTP_LOC_CONF_OFFSET, | |
421 0, | |
422 NULL }, | |
423 | |
424 #endif | |
425 | |
426 ngx_null_command | |
427 }; | |
428 | |
429 | |
430 static ngx_http_module_t ngx_http_grpc_module_ctx = { | |
7234
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431 ngx_http_grpc_add_variables, /* preconfiguration */ |
7233 | 432 NULL, /* postconfiguration */ |
433 | |
434 NULL, /* create main configuration */ | |
435 NULL, /* init main configuration */ | |
436 | |
437 NULL, /* create server configuration */ | |
438 NULL, /* merge server configuration */ | |
439 | |
440 ngx_http_grpc_create_loc_conf, /* create location configuration */ | |
441 ngx_http_grpc_merge_loc_conf /* merge location configuration */ | |
442 }; | |
443 | |
444 | |
445 ngx_module_t ngx_http_grpc_module = { | |
446 NGX_MODULE_V1, | |
447 &ngx_http_grpc_module_ctx, /* module context */ | |
448 ngx_http_grpc_commands, /* module directives */ | |
449 NGX_HTTP_MODULE, /* module type */ | |
450 NULL, /* init master */ | |
451 NULL, /* init module */ | |
452 NULL, /* init process */ | |
453 NULL, /* init thread */ | |
454 NULL, /* exit thread */ | |
455 NULL, /* exit process */ | |
456 NULL, /* exit master */ | |
457 NGX_MODULE_V1_PADDING | |
458 }; | |
459 | |
460 | |
461 static u_char ngx_http_grpc_connection_start[] = | |
462 "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* connection preface */ | |
463 | |
464 "\x00\x00\x12\x04\x00\x00\x00\x00\x00" /* settings frame */ | |
465 "\x00\x01\x00\x00\x00\x00" /* header table size */ | |
466 "\x00\x02\x00\x00\x00\x00" /* disable push */ | |
467 "\x00\x04\x7f\xff\xff\xff" /* initial window */ | |
468 | |
469 "\x00\x00\x04\x08\x00\x00\x00\x00\x00" /* window update frame */ | |
470 "\x7f\xff\x00\x00"; | |
471 | |
472 | |
473 static ngx_keyval_t ngx_http_grpc_headers[] = { | |
474 { ngx_string("Content-Length"), ngx_string("$content_length") }, | |
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475 { ngx_string("TE"), ngx_string("$grpc_internal_trailers") }, |
7233 | 476 { ngx_string("Host"), ngx_string("") }, |
477 { ngx_string("Connection"), ngx_string("") }, | |
478 { ngx_string("Transfer-Encoding"), ngx_string("") }, | |
479 { ngx_string("Keep-Alive"), ngx_string("") }, | |
480 { ngx_string("Expect"), ngx_string("") }, | |
481 { ngx_string("Upgrade"), ngx_string("") }, | |
482 { ngx_null_string, ngx_null_string } | |
483 }; | |
484 | |
485 | |
486 static ngx_str_t ngx_http_grpc_hide_headers[] = { | |
487 ngx_string("Date"), | |
488 ngx_string("Server"), | |
489 ngx_string("X-Accel-Expires"), | |
490 ngx_string("X-Accel-Redirect"), | |
491 ngx_string("X-Accel-Limit-Rate"), | |
492 ngx_string("X-Accel-Buffering"), | |
493 ngx_string("X-Accel-Charset"), | |
494 ngx_null_string | |
495 }; | |
496 | |
497 | |
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498 static ngx_http_variable_t ngx_http_grpc_vars[] = { |
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499 |
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500 { ngx_string("grpc_internal_trailers"), NULL, |
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501 ngx_http_grpc_internal_trailers_variable, 0, |
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502 NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
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503 |
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504 ngx_http_null_variable |
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505 }; |
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506 |
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507 |
7233 | 508 static ngx_int_t |
509 ngx_http_grpc_handler(ngx_http_request_t *r) | |
510 { | |
511 ngx_int_t rc; | |
512 ngx_http_upstream_t *u; | |
513 ngx_http_grpc_ctx_t *ctx; | |
514 ngx_http_grpc_loc_conf_t *glcf; | |
515 | |
516 if (ngx_http_upstream_create(r) != NGX_OK) { | |
517 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
518 } | |
519 | |
520 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
521 | |
522 u = r->upstream; | |
523 | |
524 #if (NGX_HTTP_SSL) | |
525 u->ssl = (glcf->upstream.ssl != NULL); | |
526 | |
527 if (u->ssl) { | |
528 ngx_str_set(&u->schema, "grpcs://"); | |
529 | |
530 } else { | |
531 ngx_str_set(&u->schema, "grpc://"); | |
532 } | |
533 #else | |
534 ngx_str_set(&u->schema, "grpc://"); | |
535 #endif | |
536 | |
537 u->output.tag = (ngx_buf_tag_t) &ngx_http_grpc_module; | |
538 | |
539 u->conf = &glcf->upstream; | |
540 | |
541 u->create_request = ngx_http_grpc_create_request; | |
542 u->reinit_request = ngx_http_grpc_reinit_request; | |
543 u->process_header = ngx_http_grpc_process_header; | |
544 u->abort_request = ngx_http_grpc_abort_request; | |
545 u->finalize_request = ngx_http_grpc_finalize_request; | |
546 | |
547 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_grpc_ctx_t)); | |
548 if (ctx == NULL) { | |
549 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
550 } | |
551 | |
552 ctx->request = r; | |
553 | |
554 ngx_http_set_ctx(r, ctx, ngx_http_grpc_module); | |
555 | |
556 u->input_filter_init = ngx_http_grpc_filter_init; | |
557 u->input_filter = ngx_http_grpc_filter; | |
558 u->input_filter_ctx = ctx; | |
559 | |
560 r->request_body_no_buffering = 1; | |
561 | |
562 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init); | |
563 | |
564 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { | |
565 return rc; | |
566 } | |
567 | |
568 return NGX_DONE; | |
569 } | |
570 | |
571 | |
572 static ngx_int_t | |
573 ngx_http_grpc_create_request(ngx_http_request_t *r) | |
574 { | |
575 u_char *p, *tmp, *key_tmp, *val_tmp, *headers_frame; | |
576 size_t len, tmp_len, key_len, val_len, uri_len; | |
577 uintptr_t escape; | |
578 ngx_buf_t *b; | |
579 ngx_uint_t i, next; | |
580 ngx_chain_t *cl, *body; | |
581 ngx_list_part_t *part; | |
582 ngx_table_elt_t *header; | |
583 ngx_http_upstream_t *u; | |
584 ngx_http_grpc_frame_t *f; | |
585 ngx_http_script_code_pt code; | |
586 ngx_http_grpc_loc_conf_t *glcf; | |
587 ngx_http_script_engine_t e, le; | |
588 ngx_http_script_len_code_pt lcode; | |
589 | |
590 u = r->upstream; | |
591 | |
592 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
593 | |
594 len = sizeof(ngx_http_grpc_connection_start) - 1 | |
595 + sizeof(ngx_http_grpc_frame_t); /* headers frame */ | |
596 | |
597 /* :method header */ | |
598 | |
599 if (r->method == NGX_HTTP_GET || r->method == NGX_HTTP_POST) { | |
600 len += 1; | |
601 tmp_len = 0; | |
602 | |
603 } else { | |
604 len += 1 + NGX_HTTP_V2_INT_OCTETS + r->method_name.len; | |
605 tmp_len = r->method_name.len; | |
606 } | |
607 | |
608 /* :scheme header */ | |
609 | |
610 len += 1; | |
611 | |
612 /* :path header */ | |
613 | |
614 if (r->valid_unparsed_uri) { | |
615 escape = 0; | |
616 uri_len = r->unparsed_uri.len; | |
617 | |
618 } else { | |
619 escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
620 NGX_ESCAPE_URI); | |
621 uri_len = r->uri.len + escape + sizeof("?") - 1 + r->args.len; | |
622 } | |
623 | |
624 len += 1 + NGX_HTTP_V2_INT_OCTETS + uri_len; | |
625 | |
626 if (tmp_len < uri_len) { | |
627 tmp_len = uri_len; | |
628 } | |
629 | |
630 /* :authority header */ | |
631 | |
632 if (!glcf->host_set) { | |
633 len += 1 + NGX_HTTP_V2_INT_OCTETS + glcf->host.len; | |
634 | |
635 if (tmp_len < glcf->host.len) { | |
636 tmp_len = glcf->host.len; | |
637 } | |
638 } | |
639 | |
640 /* other headers */ | |
641 | |
642 ngx_http_script_flush_no_cacheable_variables(r, glcf->headers.flushes); | |
643 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
644 | |
645 le.ip = glcf->headers.lengths->elts; | |
646 le.request = r; | |
647 le.flushed = 1; | |
648 | |
649 while (*(uintptr_t *) le.ip) { | |
650 | |
651 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
652 key_len = lcode(&le); | |
653 | |
654 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
655 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
656 } | |
657 le.ip += sizeof(uintptr_t); | |
658 | |
659 if (val_len == 0) { | |
660 continue; | |
661 } | |
662 | |
663 len += 1 + NGX_HTTP_V2_INT_OCTETS + key_len | |
664 + NGX_HTTP_V2_INT_OCTETS + val_len; | |
665 | |
666 if (tmp_len < key_len) { | |
667 tmp_len = key_len; | |
668 } | |
669 | |
670 if (tmp_len < val_len) { | |
671 tmp_len = val_len; | |
672 } | |
673 } | |
674 | |
675 if (glcf->upstream.pass_request_headers) { | |
676 part = &r->headers_in.headers.part; | |
677 header = part->elts; | |
678 | |
679 for (i = 0; /* void */; i++) { | |
680 | |
681 if (i >= part->nelts) { | |
682 if (part->next == NULL) { | |
683 break; | |
684 } | |
685 | |
686 part = part->next; | |
687 header = part->elts; | |
688 i = 0; | |
689 } | |
690 | |
691 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
692 header[i].lowcase_key, header[i].key.len)) | |
693 { | |
694 continue; | |
695 } | |
696 | |
697 len += 1 + NGX_HTTP_V2_INT_OCTETS + header[i].key.len | |
698 + NGX_HTTP_V2_INT_OCTETS + header[i].value.len; | |
699 | |
700 if (tmp_len < header[i].key.len) { | |
701 tmp_len = header[i].key.len; | |
702 } | |
703 | |
704 if (tmp_len < header[i].value.len) { | |
705 tmp_len = header[i].value.len; | |
706 } | |
707 } | |
708 } | |
709 | |
710 /* continuation frames */ | |
711 | |
712 len += sizeof(ngx_http_grpc_frame_t) | |
713 * (len / NGX_HTTP_V2_DEFAULT_FRAME_SIZE); | |
714 | |
715 | |
716 b = ngx_create_temp_buf(r->pool, len); | |
717 if (b == NULL) { | |
718 return NGX_ERROR; | |
719 } | |
720 | |
721 cl = ngx_alloc_chain_link(r->pool); | |
722 if (cl == NULL) { | |
723 return NGX_ERROR; | |
724 } | |
725 | |
726 cl->buf = b; | |
727 cl->next = NULL; | |
728 | |
729 tmp = ngx_palloc(r->pool, tmp_len * 3); | |
730 if (tmp == NULL) { | |
731 return NGX_ERROR; | |
732 } | |
733 | |
734 key_tmp = tmp + tmp_len; | |
735 val_tmp = tmp + 2 * tmp_len; | |
736 | |
737 /* connection preface */ | |
738 | |
739 b->last = ngx_copy(b->last, ngx_http_grpc_connection_start, | |
740 sizeof(ngx_http_grpc_connection_start) - 1); | |
741 | |
742 /* headers frame */ | |
743 | |
744 headers_frame = b->last; | |
745 | |
746 f = (ngx_http_grpc_frame_t *) b->last; | |
747 b->last += sizeof(ngx_http_grpc_frame_t); | |
748 | |
749 f->length_0 = 0; | |
750 f->length_1 = 0; | |
751 f->length_2 = 0; | |
752 f->type = NGX_HTTP_V2_HEADERS_FRAME; | |
753 f->flags = 0; | |
754 f->stream_id_0 = 0; | |
755 f->stream_id_1 = 0; | |
756 f->stream_id_2 = 0; | |
757 f->stream_id_3 = 1; | |
758 | |
759 if (r->method == NGX_HTTP_GET) { | |
760 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_GET_INDEX); | |
761 | |
762 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
763 "grpc header: \":method: GET\""); | |
764 | |
765 } else if (r->method == NGX_HTTP_POST) { | |
766 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_POST_INDEX); | |
767 | |
768 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
769 "grpc header: \":method: POST\""); | |
770 | |
771 } else { | |
772 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_METHOD_INDEX); | |
773 b->last = ngx_http_v2_write_value(b->last, r->method_name.data, | |
774 r->method_name.len, tmp); | |
775 | |
776 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
777 "grpc header: \":method: %V\"", &r->method_name); | |
778 } | |
779 | |
780 #if (NGX_HTTP_SSL) | |
781 if (glcf->ssl) { | |
782 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTPS_INDEX); | |
783 | |
784 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
785 "grpc header: \":scheme: https\""); | |
786 } else | |
787 #endif | |
788 { | |
789 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTP_INDEX); | |
790 | |
791 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
792 "grpc header: \":scheme: http\""); | |
793 } | |
794 | |
795 if (r->valid_unparsed_uri) { | |
796 | |
797 if (r->unparsed_uri.len == 1 && r->unparsed_uri.data[0] == '/') { | |
798 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_PATH_ROOT_INDEX); | |
799 | |
800 } else { | |
801 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
802 b->last = ngx_http_v2_write_value(b->last, r->unparsed_uri.data, | |
803 r->unparsed_uri.len, tmp); | |
804 } | |
805 | |
806 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
807 "grpc header: \":path: %V\"", &r->unparsed_uri); | |
808 | |
809 } else if (escape || r->args.len > 0) { | |
810 p = val_tmp; | |
811 | |
812 if (escape) { | |
813 p = (u_char *) ngx_escape_uri(p, r->uri.data, r->uri.len, | |
814 NGX_ESCAPE_URI); | |
815 | |
816 } else { | |
817 p = ngx_copy(p, r->uri.data, r->uri.len); | |
818 } | |
819 | |
820 if (r->args.len > 0) { | |
821 *p++ = '?'; | |
822 p = ngx_copy(p, r->args.data, r->args.len); | |
823 } | |
824 | |
825 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
826 b->last = ngx_http_v2_write_value(b->last, val_tmp, p - val_tmp, tmp); | |
827 | |
828 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
829 "grpc header: \":path: %*s\"", p - val_tmp, val_tmp); | |
830 | |
831 } else { | |
832 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
833 b->last = ngx_http_v2_write_value(b->last, r->uri.data, | |
834 r->uri.len, tmp); | |
835 | |
836 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
837 "grpc header: \":path: %V\"", &r->uri); | |
838 } | |
839 | |
840 if (!glcf->host_set) { | |
841 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_AUTHORITY_INDEX); | |
842 b->last = ngx_http_v2_write_value(b->last, glcf->host.data, | |
843 glcf->host.len, tmp); | |
844 | |
845 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
846 "grpc header: \":authority: %V\"", &glcf->host); | |
847 } | |
848 | |
849 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
850 | |
851 e.ip = glcf->headers.values->elts; | |
852 e.request = r; | |
853 e.flushed = 1; | |
854 | |
855 le.ip = glcf->headers.lengths->elts; | |
856 | |
857 while (*(uintptr_t *) le.ip) { | |
858 | |
859 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
860 key_len = lcode(&le); | |
861 | |
862 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
863 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
864 } | |
865 le.ip += sizeof(uintptr_t); | |
866 | |
867 if (val_len == 0) { | |
868 e.skip = 1; | |
869 | |
870 while (*(uintptr_t *) e.ip) { | |
871 code = *(ngx_http_script_code_pt *) e.ip; | |
872 code((ngx_http_script_engine_t *) &e); | |
873 } | |
874 e.ip += sizeof(uintptr_t); | |
875 | |
876 e.skip = 0; | |
877 | |
878 continue; | |
879 } | |
880 | |
881 *b->last++ = 0; | |
882 | |
883 e.pos = key_tmp; | |
884 | |
885 code = *(ngx_http_script_code_pt *) e.ip; | |
886 code((ngx_http_script_engine_t *) &e); | |
887 | |
888 b->last = ngx_http_v2_write_name(b->last, key_tmp, key_len, tmp); | |
889 | |
890 e.pos = val_tmp; | |
891 | |
892 while (*(uintptr_t *) e.ip) { | |
893 code = *(ngx_http_script_code_pt *) e.ip; | |
894 code((ngx_http_script_engine_t *) &e); | |
895 } | |
896 e.ip += sizeof(uintptr_t); | |
897 | |
898 b->last = ngx_http_v2_write_value(b->last, val_tmp, val_len, tmp); | |
899 | |
900 #if (NGX_DEBUG) | |
901 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
902 ngx_strlow(key_tmp, key_tmp, key_len); | |
903 | |
904 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
905 "grpc header: \"%*s: %*s\"", | |
906 key_len, key_tmp, val_len, val_tmp); | |
907 } | |
908 #endif | |
909 } | |
910 | |
911 if (glcf->upstream.pass_request_headers) { | |
912 part = &r->headers_in.headers.part; | |
913 header = part->elts; | |
914 | |
915 for (i = 0; /* void */; i++) { | |
916 | |
917 if (i >= part->nelts) { | |
918 if (part->next == NULL) { | |
919 break; | |
920 } | |
921 | |
922 part = part->next; | |
923 header = part->elts; | |
924 i = 0; | |
925 } | |
926 | |
927 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
928 header[i].lowcase_key, header[i].key.len)) | |
929 { | |
930 continue; | |
931 } | |
932 | |
933 *b->last++ = 0; | |
934 | |
935 b->last = ngx_http_v2_write_name(b->last, header[i].key.data, | |
936 header[i].key.len, tmp); | |
937 | |
938 b->last = ngx_http_v2_write_value(b->last, header[i].value.data, | |
939 header[i].value.len, tmp); | |
940 | |
941 #if (NGX_DEBUG) | |
942 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
943 ngx_strlow(tmp, header[i].key.data, header[i].key.len); | |
944 | |
945 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
946 "grpc header: \"%*s: %V\"", | |
947 header[i].key.len, tmp, &header[i].value); | |
948 } | |
949 #endif | |
950 } | |
951 } | |
952 | |
953 /* update headers frame length */ | |
954 | |
955 len = b->last - headers_frame - sizeof(ngx_http_grpc_frame_t); | |
956 | |
957 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
958 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
959 next = 1; | |
960 | |
961 } else { | |
962 next = 0; | |
963 } | |
964 | |
965 f = (ngx_http_grpc_frame_t *) headers_frame; | |
966 | |
967 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
968 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
969 f->length_2 = (u_char) (len & 0xff); | |
970 | |
971 /* create additional continuation frames */ | |
972 | |
973 p = headers_frame; | |
974 | |
975 while (next) { | |
976 p += sizeof(ngx_http_grpc_frame_t) + NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
977 len = b->last - p; | |
978 | |
979 ngx_memmove(p + sizeof(ngx_http_grpc_frame_t), p, len); | |
980 b->last += sizeof(ngx_http_grpc_frame_t); | |
981 | |
982 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
983 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
984 next = 1; | |
985 | |
986 } else { | |
987 next = 0; | |
988 } | |
989 | |
990 f = (ngx_http_grpc_frame_t *) p; | |
991 | |
992 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
993 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
994 f->length_2 = (u_char) (len & 0xff); | |
995 f->type = NGX_HTTP_V2_CONTINUATION_FRAME; | |
996 f->flags = 0; | |
997 f->stream_id_0 = 0; | |
998 f->stream_id_1 = 0; | |
999 f->stream_id_2 = 0; | |
1000 f->stream_id_3 = 1; | |
1001 } | |
1002 | |
1003 f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG; | |
1004 | |
1005 #if (NGX_DEBUG) | |
1006 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
1007 u_char buf[512]; | |
1008 size_t n, m; | |
1009 | |
1010 n = ngx_min(b->last - b->pos, 256); | |
1011 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
1012 | |
1013 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1014 "grpc header: %*s%s, len: %uz", | |
1015 m, buf, b->last - b->pos > 256 ? "..." : "", | |
1016 b->last - b->pos); | |
1017 } | |
1018 #endif | |
1019 | |
1020 if (r->request_body_no_buffering) { | |
1021 | |
1022 u->request_bufs = cl; | |
1023 | |
1024 } else { | |
1025 | |
1026 body = u->request_bufs; | |
1027 u->request_bufs = cl; | |
1028 | |
1029 if (body == NULL) { | |
1030 f = (ngx_http_grpc_frame_t *) headers_frame; | |
1031 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
1032 } | |
1033 | |
1034 while (body) { | |
1035 b = ngx_alloc_buf(r->pool); | |
1036 if (b == NULL) { | |
1037 return NGX_ERROR; | |
1038 } | |
1039 | |
1040 ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); | |
1041 | |
1042 cl->next = ngx_alloc_chain_link(r->pool); | |
1043 if (cl->next == NULL) { | |
1044 return NGX_ERROR; | |
1045 } | |
1046 | |
1047 cl = cl->next; | |
1048 cl->buf = b; | |
1049 | |
1050 body = body->next; | |
1051 } | |
1052 | |
1053 b->last_buf = 1; | |
1054 } | |
1055 | |
1056 u->output.output_filter = ngx_http_grpc_body_output_filter; | |
1057 u->output.filter_ctx = r; | |
1058 | |
1059 b->flush = 1; | |
1060 cl->next = NULL; | |
1061 | |
1062 return NGX_OK; | |
1063 } | |
1064 | |
1065 | |
1066 static ngx_int_t | |
1067 ngx_http_grpc_reinit_request(ngx_http_request_t *r) | |
1068 { | |
1069 ngx_http_grpc_ctx_t *ctx; | |
1070 | |
1071 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
1072 | |
1073 if (ctx == NULL) { | |
1074 return NGX_OK; | |
1075 } | |
1076 | |
1077 ctx->state = 0; | |
1078 ctx->header_sent = 0; | |
1079 ctx->output_closed = 0; | |
7417
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|
1080 ctx->output_blocked = 0; |
7233 | 1081 ctx->parsing_headers = 0; |
1082 ctx->end_stream = 0; | |
7416
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|
1083 ctx->done = 0; |
7233 | 1084 ctx->status = 0; |
1085 ctx->connection = NULL; | |
1086 | |
1087 return NGX_OK; | |
1088 } | |
1089 | |
1090 | |
1091 static ngx_int_t | |
1092 ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in) | |
1093 { | |
1094 ngx_http_request_t *r = data; | |
1095 | |
1096 off_t file_pos; | |
1097 u_char *p, *pos, *start; | |
1098 size_t len, limit; | |
1099 ngx_buf_t *b; | |
1100 ngx_int_t rc; | |
1101 ngx_uint_t next, last; | |
1102 ngx_chain_t *cl, *out, **ll; | |
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diff
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|
1103 ngx_http_upstream_t *u; |
7233 | 1104 ngx_http_grpc_ctx_t *ctx; |
1105 ngx_http_grpc_frame_t *f; | |
1106 | |
1107 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1108 "grpc output filter"); | |
1109 | |
1110 ctx = ngx_http_grpc_get_ctx(r); | |
1111 | |
1112 if (ctx == NULL) { | |
1113 return NGX_ERROR; | |
1114 } | |
1115 | |
1116 if (in) { | |
1117 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { | |
1118 return NGX_ERROR; | |
1119 } | |
1120 } | |
1121 | |
1122 out = NULL; | |
1123 ll = &out; | |
1124 | |
1125 if (!ctx->header_sent) { | |
1126 /* first buffer contains headers */ | |
1127 | |
1128 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1129 "grpc output header"); | |
1130 | |
1131 ctx->header_sent = 1; | |
1132 | |
1133 if (ctx->id != 1) { | |
1134 /* | |
1135 * keepalive connection: skip connection preface, | |
1136 * update stream identifiers | |
1137 */ | |
1138 | |
1139 b = ctx->in->buf; | |
1140 b->pos += sizeof(ngx_http_grpc_connection_start) - 1; | |
1141 | |
1142 p = b->pos; | |
1143 | |
1144 while (p < b->last) { | |
1145 f = (ngx_http_grpc_frame_t *) p; | |
1146 p += sizeof(ngx_http_grpc_frame_t); | |
1147 | |
1148 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1149 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1150 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1151 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1152 | |
1153 p += (f->length_0 << 16) + (f->length_1 << 8) + f->length_2; | |
1154 } | |
1155 } | |
1156 | |
1157 if (ctx->in->buf->last_buf) { | |
1158 ctx->output_closed = 1; | |
1159 } | |
1160 | |
1161 *ll = ctx->in; | |
1162 ll = &ctx->in->next; | |
1163 | |
1164 ctx->in = ctx->in->next; | |
1165 } | |
1166 | |
1167 if (ctx->out) { | |
1168 /* queued control frames */ | |
1169 | |
1170 *ll = ctx->out; | |
1171 | |
1172 for (cl = ctx->out, ll = &cl->next; cl; cl = cl->next) { | |
1173 ll = &cl->next; | |
1174 } | |
1175 | |
1176 ctx->out = NULL; | |
1177 } | |
1178 | |
1179 f = NULL; | |
1180 last = 0; | |
1181 | |
1182 limit = ngx_max(0, ctx->send_window); | |
1183 | |
1184 if (limit > ctx->connection->send_window) { | |
1185 limit = ctx->connection->send_window; | |
1186 } | |
1187 | |
1188 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1189 "grpc output limit: %uz w:%z:%uz", | |
1190 limit, ctx->send_window, ctx->connection->send_window); | |
1191 | |
1192 #if (NGX_SUPPRESS_WARN) | |
1193 file_pos = 0; | |
1194 pos = NULL; | |
1195 cl = NULL; | |
1196 #endif | |
1197 | |
1198 in = ctx->in; | |
1199 | |
1200 while (in && limit > 0) { | |
1201 | |
1202 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
1203 "grpc output in l:%d f:%d %p, pos %p, size: %z " | |
1204 "file: %O, size: %O", | |
1205 in->buf->last_buf, | |
1206 in->buf->in_file, | |
1207 in->buf->start, in->buf->pos, | |
1208 in->buf->last - in->buf->pos, | |
1209 in->buf->file_pos, | |
1210 in->buf->file_last - in->buf->file_pos); | |
1211 | |
1212 if (ngx_buf_special(in->buf)) { | |
1213 goto next; | |
1214 } | |
1215 | |
1216 if (in->buf->in_file) { | |
1217 file_pos = in->buf->file_pos; | |
1218 | |
1219 } else { | |
1220 pos = in->buf->pos; | |
1221 } | |
1222 | |
1223 next = 0; | |
1224 | |
1225 do { | |
1226 | |
1227 cl = ngx_http_grpc_get_buf(r, ctx); | |
1228 if (cl == NULL) { | |
1229 return NGX_ERROR; | |
1230 } | |
1231 | |
1232 b = cl->buf; | |
1233 | |
1234 f = (ngx_http_grpc_frame_t *) b->last; | |
1235 b->last += sizeof(ngx_http_grpc_frame_t); | |
1236 | |
1237 *ll = cl; | |
1238 ll = &cl->next; | |
1239 | |
1240 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
1241 if (cl == NULL) { | |
1242 return NGX_ERROR; | |
1243 } | |
1244 | |
1245 b = cl->buf; | |
1246 start = b->start; | |
1247 | |
1248 ngx_memcpy(b, in->buf, sizeof(ngx_buf_t)); | |
1249 | |
1250 /* | |
1251 * restore b->start to preserve memory allocated in the buffer, | |
1252 * to reuse it later for headers and control frames | |
1253 */ | |
1254 | |
1255 b->start = start; | |
1256 | |
1257 if (in->buf->in_file) { | |
1258 b->file_pos = file_pos; | |
1259 file_pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
1260 | |
1261 if (file_pos >= in->buf->file_last) { | |
1262 file_pos = in->buf->file_last; | |
1263 next = 1; | |
1264 } | |
1265 | |
1266 b->file_last = file_pos; | |
1267 len = (ngx_uint_t) (file_pos - b->file_pos); | |
1268 | |
1269 } else { | |
1270 b->pos = pos; | |
1271 pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
1272 | |
1273 if (pos >= in->buf->last) { | |
1274 pos = in->buf->last; | |
1275 next = 1; | |
1276 } | |
1277 | |
1278 b->last = pos; | |
1279 len = (ngx_uint_t) (pos - b->pos); | |
1280 } | |
1281 | |
1282 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
1283 b->shadow = in->buf; | |
1284 b->last_shadow = next; | |
1285 | |
1286 b->last_buf = 0; | |
1287 b->last_in_chain = 0; | |
1288 | |
1289 *ll = cl; | |
1290 ll = &cl->next; | |
1291 | |
1292 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
1293 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
1294 f->length_2 = (u_char) (len & 0xff); | |
1295 f->type = NGX_HTTP_V2_DATA_FRAME; | |
1296 f->flags = 0; | |
1297 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1298 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1299 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1300 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1301 | |
1302 limit -= len; | |
1303 ctx->send_window -= len; | |
1304 ctx->connection->send_window -= len; | |
1305 | |
1306 } while (!next && limit > 0); | |
1307 | |
1308 if (!next) { | |
1309 /* | |
1310 * if the buffer wasn't fully sent due to flow control limits, | |
1311 * preserve position for future use | |
1312 */ | |
1313 | |
1314 if (in->buf->in_file) { | |
1315 in->buf->file_pos = file_pos; | |
1316 | |
1317 } else { | |
1318 in->buf->pos = pos; | |
1319 } | |
1320 | |
1321 break; | |
1322 } | |
1323 | |
1324 next: | |
1325 | |
1326 if (in->buf->last_buf) { | |
1327 last = 1; | |
1328 } | |
1329 | |
1330 in = in->next; | |
1331 } | |
1332 | |
1333 ctx->in = in; | |
1334 | |
1335 if (last) { | |
1336 | |
1337 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1338 "grpc output last"); | |
1339 | |
1340 ctx->output_closed = 1; | |
1341 | |
1342 if (f) { | |
1343 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
1344 | |
1345 } else { | |
1346 cl = ngx_http_grpc_get_buf(r, ctx); | |
1347 if (cl == NULL) { | |
1348 return NGX_ERROR; | |
1349 } | |
1350 | |
1351 b = cl->buf; | |
1352 | |
1353 f = (ngx_http_grpc_frame_t *) b->last; | |
1354 b->last += sizeof(ngx_http_grpc_frame_t); | |
1355 | |
1356 f->length_0 = 0; | |
1357 f->length_1 = 0; | |
1358 f->length_2 = 0; | |
1359 f->type = NGX_HTTP_V2_DATA_FRAME; | |
1360 f->flags = NGX_HTTP_V2_END_STREAM_FLAG; | |
1361 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1362 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1363 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1364 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1365 | |
1366 *ll = cl; | |
1367 ll = &cl->next; | |
1368 } | |
1369 | |
1370 cl->buf->last_buf = 1; | |
1371 } | |
1372 | |
1373 *ll = NULL; | |
1374 | |
1375 #if (NGX_DEBUG) | |
1376 | |
1377 for (cl = out; cl; cl = cl->next) { | |
1378 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
1379 "grpc output out l:%d f:%d %p, pos %p, size: %z " | |
1380 "file: %O, size: %O", | |
1381 cl->buf->last_buf, | |
1382 cl->buf->in_file, | |
1383 cl->buf->start, cl->buf->pos, | |
1384 cl->buf->last - cl->buf->pos, | |
1385 cl->buf->file_pos, | |
1386 cl->buf->file_last - cl->buf->file_pos); | |
1387 } | |
1388 | |
1389 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1390 "grpc output limit: %uz w:%z:%uz", | |
1391 limit, ctx->send_window, ctx->connection->send_window); | |
1392 | |
1393 #endif | |
1394 | |
1395 rc = ngx_chain_writer(&r->upstream->writer, out); | |
1396 | |
1397 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, | |
1398 (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter); | |
1399 | |
1400 for (cl = ctx->free; cl; cl = cl->next) { | |
1401 | |
1402 /* mark original buffers as sent */ | |
1403 | |
1404 if (cl->buf->shadow) { | |
1405 if (cl->buf->last_shadow) { | |
1406 b = cl->buf->shadow; | |
1407 b->pos = b->last; | |
1408 } | |
1409 | |
1410 cl->buf->shadow = NULL; | |
1411 } | |
1412 } | |
1413 | |
1414 if (rc == NGX_OK && ctx->in) { | |
1415 rc = NGX_AGAIN; | |
1416 } | |
1417 | |
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1418 if (rc == NGX_AGAIN) { |
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1419 ctx->output_blocked = 1; |
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1420 |
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1421 } else { |
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1422 ctx->output_blocked = 0; |
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1423 } |
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1424 |
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1425 if (ctx->done) { |
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1426 |
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1427 /* |
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1428 * We have already got the response and were sending some additional |
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1429 * control frames. Even if there is still something unsent, stop |
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1430 * here anyway. |
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1431 */ |
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1432 |
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1433 u = r->upstream; |
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1434 u->length = 0; |
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1435 |
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1436 if (ctx->in == NULL |
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1437 && ctx->out == NULL |
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1438 && ctx->output_closed |
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parents:
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1439 && !ctx->output_blocked |
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1440 && ctx->state == ngx_http_grpc_st_start) |
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1441 { |
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1442 u->keepalive = 1; |
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1443 } |
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1444 |
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1445 ngx_post_event(u->peer.connection->read, &ngx_posted_events); |
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1446 } |
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1447 |
7233 | 1448 return rc; |
1449 } | |
1450 | |
1451 | |
1452 static ngx_int_t | |
1453 ngx_http_grpc_process_header(ngx_http_request_t *r) | |
1454 { | |
1455 ngx_str_t *status_line; | |
1456 ngx_int_t rc, status; | |
1457 ngx_buf_t *b; | |
1458 ngx_table_elt_t *h; | |
1459 ngx_http_upstream_t *u; | |
1460 ngx_http_grpc_ctx_t *ctx; | |
1461 ngx_http_upstream_header_t *hh; | |
1462 ngx_http_upstream_main_conf_t *umcf; | |
1463 | |
1464 u = r->upstream; | |
1465 b = &u->buffer; | |
1466 | |
1467 #if (NGX_DEBUG) | |
1468 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
1469 u_char buf[512]; | |
1470 size_t n, m; | |
1471 | |
1472 n = ngx_min(b->last - b->pos, 256); | |
1473 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
1474 | |
1475 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1476 "grpc response: %*s%s, len: %uz", | |
1477 m, buf, b->last - b->pos > 256 ? "..." : "", | |
1478 b->last - b->pos); | |
1479 } | |
1480 #endif | |
1481 | |
1482 ctx = ngx_http_grpc_get_ctx(r); | |
1483 | |
1484 if (ctx == NULL) { | |
1485 return NGX_ERROR; | |
1486 } | |
1487 | |
1488 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); | |
1489 | |
1490 for ( ;; ) { | |
1491 | |
1492 if (ctx->state < ngx_http_grpc_st_payload) { | |
1493 | |
1494 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
1495 | |
1496 if (rc == NGX_AGAIN) { | |
1497 | |
1498 /* | |
1499 * there can be a lot of window update frames, | |
1500 * so we reset buffer if it is empty and we haven't | |
1501 * started parsing headers yet | |
1502 */ | |
1503 | |
1504 if (!ctx->parsing_headers) { | |
1505 b->pos = b->start; | |
1506 b->last = b->pos; | |
1507 } | |
1508 | |
1509 return NGX_AGAIN; | |
1510 } | |
1511 | |
1512 if (rc == NGX_ERROR) { | |
1513 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1514 } | |
1515 | |
1516 /* | |
1517 * RFC 7540 says that implementations MUST discard frames | |
1518 * that have unknown or unsupported types. However, extension | |
1519 * frames that appear in the middle of a header block are | |
1520 * not permitted. Also, for obvious reasons CONTINUATION frames | |
1521 * cannot appear before headers, and DATA frames are not expected | |
1522 * to appear before all headers are parsed. | |
1523 */ | |
1524 | |
1525 if (ctx->type == NGX_HTTP_V2_DATA_FRAME | |
1526 || (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
1527 && !ctx->parsing_headers) | |
1528 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
1529 && ctx->parsing_headers)) | |
1530 { | |
1531 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1532 "upstream sent unexpected http2 frame: %d", | |
1533 ctx->type); | |
1534 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1535 } | |
1536 | |
1537 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
1538 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1539 "upstream sent frame for unknown stream %ui", | |
1540 ctx->stream_id); | |
1541 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1542 } | |
1543 } | |
1544 | |
1545 /* frame payload */ | |
1546 | |
1547 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
1548 | |
1549 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
1550 | |
1551 if (rc == NGX_AGAIN) { | |
1552 return NGX_AGAIN; | |
1553 } | |
1554 | |
1555 if (rc == NGX_ERROR) { | |
1556 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1557 } | |
1558 | |
1559 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1560 "upstream rejected request with error %ui", | |
1561 ctx->error); | |
1562 | |
1563 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1564 } | |
1565 | |
1566 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
1567 | |
1568 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
1569 | |
1570 if (rc == NGX_AGAIN) { | |
1571 return NGX_AGAIN; | |
1572 } | |
1573 | |
1574 if (rc == NGX_ERROR) { | |
1575 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1576 } | |
1577 | |
1578 /* | |
1579 * If stream_id is lower than one we use, our | |
1580 * request won't be processed and needs to be retried. | |
1581 * If stream_id is greater or equal to the one we use, | |
1582 * we can continue normally (except we can't use this | |
1583 * connection for additional requests). If there is | |
1584 * a real error, the connection will be closed. | |
1585 */ | |
1586 | |
1587 if (ctx->stream_id < ctx->id) { | |
1588 | |
1589 /* TODO: we can retry non-idempotent requests */ | |
1590 | |
1591 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1592 "upstream sent goaway with error %ui", | |
1593 ctx->error); | |
1594 | |
1595 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1596 } | |
1597 | |
1598 continue; | |
1599 } | |
1600 | |
1601 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
1602 | |
1603 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
1604 | |
1605 if (rc == NGX_AGAIN) { | |
1606 return NGX_AGAIN; | |
1607 } | |
1608 | |
1609 if (rc == NGX_ERROR) { | |
1610 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1611 } | |
1612 | |
1613 if (ctx->in) { | |
1614 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1615 } | |
1616 | |
1617 continue; | |
1618 } | |
1619 | |
1620 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
1621 | |
1622 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
1623 | |
1624 if (rc == NGX_AGAIN) { | |
1625 return NGX_AGAIN; | |
1626 } | |
1627 | |
1628 if (rc == NGX_ERROR) { | |
1629 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1630 } | |
1631 | |
1632 if (ctx->in) { | |
1633 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1634 } | |
1635 | |
1636 continue; | |
1637 } | |
1638 | |
1639 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
1640 | |
1641 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
1642 | |
1643 if (rc == NGX_AGAIN) { | |
1644 return NGX_AGAIN; | |
1645 } | |
1646 | |
1647 if (rc == NGX_ERROR) { | |
1648 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1649 } | |
1650 | |
1651 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1652 continue; | |
1653 } | |
1654 | |
1655 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
1656 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1657 "upstream sent unexpected push promise frame"); | |
1658 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1659 } | |
1660 | |
1661 if (ctx->type != NGX_HTTP_V2_HEADERS_FRAME | |
1662 && ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME) | |
1663 { | |
1664 /* priority, unknown frames */ | |
1665 | |
1666 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
1667 ctx->rest -= b->last - b->pos; | |
1668 b->pos = b->last; | |
1669 return NGX_AGAIN; | |
1670 } | |
1671 | |
1672 b->pos += ctx->rest; | |
1673 ctx->rest = 0; | |
1674 ctx->state = ngx_http_grpc_st_start; | |
1675 | |
1676 continue; | |
1677 } | |
1678 | |
1679 /* headers */ | |
1680 | |
1681 for ( ;; ) { | |
1682 | |
1683 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
1684 | |
1685 if (rc == NGX_AGAIN) { | |
1686 break; | |
1687 } | |
1688 | |
1689 if (rc == NGX_OK) { | |
1690 | |
1691 /* a header line has been parsed successfully */ | |
1692 | |
1693 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1694 "grpc header: \"%V: %V\"", | |
1695 &ctx->name, &ctx->value); | |
1696 | |
1697 if (ctx->name.len && ctx->name.data[0] == ':') { | |
1698 | |
1699 if (ctx->name.len != sizeof(":status") - 1 | |
1700 || ngx_strncmp(ctx->name.data, ":status", | |
1701 sizeof(":status") - 1) | |
1702 != 0) | |
1703 { | |
1704 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1705 "upstream sent invalid header \"%V: %V\"", | |
1706 &ctx->name, &ctx->value); | |
1707 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1708 } | |
1709 | |
1710 if (ctx->status) { | |
1711 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1712 "upstream sent duplicate :status header"); | |
1713 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1714 } | |
1715 | |
1716 status_line = &ctx->value; | |
1717 | |
1718 if (status_line->len != 3) { | |
1719 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1720 "upstream sent invalid :status \"%V\"", | |
1721 status_line); | |
1722 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1723 } | |
1724 | |
1725 status = ngx_atoi(status_line->data, 3); | |
1726 | |
1727 if (status == NGX_ERROR) { | |
1728 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1729 "upstream sent invalid :status \"%V\"", | |
1730 status_line); | |
1731 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1732 } | |
1733 | |
1734 if (status < NGX_HTTP_OK) { | |
1735 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1736 "upstream sent unexpected :status \"%V\"", | |
1737 status_line); | |
1738 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1739 } | |
1740 | |
1741 u->headers_in.status_n = status; | |
1742 | |
1743 if (u->state && u->state->status == 0) { | |
1744 u->state->status = status; | |
1745 } | |
1746 | |
1747 ctx->status = 1; | |
1748 | |
1749 continue; | |
1750 | |
1751 } else if (!ctx->status) { | |
1752 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1753 "upstream sent no :status header"); | |
1754 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1755 } | |
1756 | |
1757 h = ngx_list_push(&u->headers_in.headers); | |
1758 if (h == NULL) { | |
1759 return NGX_ERROR; | |
1760 } | |
1761 | |
1762 h->key = ctx->name; | |
1763 h->value = ctx->value; | |
1764 h->lowcase_key = h->key.data; | |
1765 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
1766 | |
1767 hh = ngx_hash_find(&umcf->headers_in_hash, h->hash, | |
1768 h->lowcase_key, h->key.len); | |
1769 | |
1770 if (hh && hh->handler(r, h, hh->offset) != NGX_OK) { | |
1771 return NGX_ERROR; | |
1772 } | |
1773 | |
1774 continue; | |
1775 } | |
1776 | |
1777 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
1778 | |
1779 /* a whole header has been parsed successfully */ | |
1780 | |
1781 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1782 "grpc header done"); | |
1783 | |
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1784 if (ctx->end_stream) { |
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1785 u->headers_in.content_length_n = 0; |
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1786 |
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1787 if (ctx->in == NULL |
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1788 && ctx->out == NULL |
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1789 && ctx->output_closed |
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1790 && !ctx->output_blocked |
7235
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1791 && b->last == b->pos) |
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1792 { |
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1793 u->keepalive = 1; |
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1794 } |
7233 | 1795 } |
1796 | |
1797 return NGX_OK; | |
1798 } | |
1799 | |
1800 /* there was error while a header line parsing */ | |
1801 | |
1802 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1803 "upstream sent invalid header"); | |
1804 | |
1805 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1806 } | |
1807 | |
1808 /* rc == NGX_AGAIN */ | |
1809 | |
1810 if (ctx->rest == 0) { | |
1811 ctx->state = ngx_http_grpc_st_start; | |
1812 continue; | |
1813 } | |
1814 | |
1815 return NGX_AGAIN; | |
1816 } | |
1817 } | |
1818 | |
1819 | |
1820 static ngx_int_t | |
1821 ngx_http_grpc_filter_init(void *data) | |
1822 { | |
1823 ngx_http_grpc_ctx_t *ctx = data; | |
1824 | |
1825 ngx_http_request_t *r; | |
1826 ngx_http_upstream_t *u; | |
1827 | |
1828 r = ctx->request; | |
1829 u = r->upstream; | |
1830 | |
1831 u->length = 1; | |
1832 | |
1833 if (ctx->end_stream) { | |
1834 u->length = 0; | |
1835 } | |
1836 | |
1837 return NGX_OK; | |
1838 } | |
1839 | |
1840 | |
1841 static ngx_int_t | |
1842 ngx_http_grpc_filter(void *data, ssize_t bytes) | |
1843 { | |
1844 ngx_http_grpc_ctx_t *ctx = data; | |
1845 | |
1846 ngx_int_t rc; | |
1847 ngx_buf_t *b, *buf; | |
1848 ngx_chain_t *cl, **ll; | |
1849 ngx_table_elt_t *h; | |
1850 ngx_http_request_t *r; | |
1851 ngx_http_upstream_t *u; | |
1852 | |
1853 r = ctx->request; | |
1854 u = r->upstream; | |
1855 b = &u->buffer; | |
1856 | |
1857 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1858 "grpc filter bytes:%z", bytes); | |
1859 | |
1860 b->pos = b->last; | |
1861 b->last += bytes; | |
1862 | |
1863 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
1864 ll = &cl->next; | |
1865 } | |
1866 | |
1867 for ( ;; ) { | |
1868 | |
1869 if (ctx->state < ngx_http_grpc_st_payload) { | |
1870 | |
1871 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
1872 | |
1873 if (rc == NGX_AGAIN) { | |
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1874 |
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1875 if (ctx->done) { |
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1876 |
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1877 /* |
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1878 * We have finished parsing the response and the |
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1879 * remaining control frames. If there are unsent |
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1880 * control frames, post a write event to send them. |
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1881 */ |
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1882 |
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1883 if (ctx->out) { |
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1884 ngx_post_event(u->peer.connection->write, |
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1885 &ngx_posted_events); |
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1886 return NGX_AGAIN; |
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1887 } |
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1888 |
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1889 u->length = 0; |
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1890 |
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1891 if (ctx->in == NULL |
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1892 && ctx->output_closed |
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1893 && !ctx->output_blocked |
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1894 && ctx->state == ngx_http_grpc_st_start) |
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1895 { |
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1896 u->keepalive = 1; |
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1897 } |
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1898 |
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1899 break; |
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1900 } |
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1901 |
7233 | 1902 return NGX_AGAIN; |
1903 } | |
1904 | |
1905 if (rc == NGX_ERROR) { | |
1906 return NGX_ERROR; | |
1907 } | |
1908 | |
1909 if ((ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
1910 && !ctx->parsing_headers) | |
1911 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
1912 && ctx->parsing_headers)) | |
1913 { | |
1914 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1915 "upstream sent unexpected http2 frame: %d", | |
1916 ctx->type); | |
1917 return NGX_ERROR; | |
1918 } | |
1919 | |
1920 if (ctx->type == NGX_HTTP_V2_DATA_FRAME) { | |
1921 | |
1922 if (ctx->stream_id != ctx->id) { | |
1923 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1924 "upstream sent data frame " | |
1925 "for unknown stream %ui", | |
1926 ctx->stream_id); | |
1927 return NGX_ERROR; | |
1928 } | |
1929 | |
1930 if (ctx->rest > ctx->recv_window) { | |
1931 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1932 "upstream violated stream flow control, " | |
1933 "received %uz data frame with window %uz", | |
1934 ctx->rest, ctx->recv_window); | |
1935 return NGX_ERROR; | |
1936 } | |
1937 | |
1938 if (ctx->rest > ctx->connection->recv_window) { | |
1939 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1940 "upstream violated connection flow control, " | |
1941 "received %uz data frame with window %uz", | |
1942 ctx->rest, ctx->connection->recv_window); | |
1943 return NGX_ERROR; | |
1944 } | |
1945 | |
1946 ctx->recv_window -= ctx->rest; | |
1947 ctx->connection->recv_window -= ctx->rest; | |
1948 | |
1949 if (ctx->connection->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4 | |
1950 || ctx->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4) | |
1951 { | |
1952 if (ngx_http_grpc_send_window_update(r, ctx) != NGX_OK) { | |
1953 return NGX_ERROR; | |
1954 } | |
1955 | |
1956 ngx_post_event(u->peer.connection->write, | |
1957 &ngx_posted_events); | |
1958 } | |
1959 } | |
1960 | |
1961 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
1962 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1963 "upstream sent frame for unknown stream %ui", | |
1964 ctx->stream_id); | |
1965 return NGX_ERROR; | |
1966 } | |
1967 | |
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1968 if (ctx->stream_id && ctx->done) { |
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1969 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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1970 "upstream sent frame for closed stream %ui", |
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1971 ctx->stream_id); |
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1972 return NGX_ERROR; |
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1973 } |
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1974 |
7233 | 1975 ctx->padding = 0; |
1976 } | |
1977 | |
1978 if (ctx->state == ngx_http_grpc_st_padding) { | |
1979 | |
1980 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
1981 ctx->rest -= b->last - b->pos; | |
1982 b->pos = b->last; | |
1983 return NGX_AGAIN; | |
1984 } | |
1985 | |
1986 b->pos += ctx->rest; | |
1987 ctx->rest = 0; | |
1988 ctx->state = ngx_http_grpc_st_start; | |
1989 | |
1990 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
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1991 ctx->done = 1; |
7233 | 1992 } |
1993 | |
1994 continue; | |
1995 } | |
1996 | |
1997 /* frame payload */ | |
1998 | |
1999 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
2000 | |
2001 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
2002 | |
2003 if (rc == NGX_AGAIN) { | |
2004 return NGX_AGAIN; | |
2005 } | |
2006 | |
2007 if (rc == NGX_ERROR) { | |
2008 return NGX_ERROR; | |
2009 } | |
2010 | |
2011 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2012 "upstream rejected request with error %ui", | |
2013 ctx->error); | |
2014 | |
2015 return NGX_ERROR; | |
2016 } | |
2017 | |
2018 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
2019 | |
2020 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
2021 | |
2022 if (rc == NGX_AGAIN) { | |
2023 return NGX_AGAIN; | |
2024 } | |
2025 | |
2026 if (rc == NGX_ERROR) { | |
2027 return NGX_ERROR; | |
2028 } | |
2029 | |
2030 /* | |
2031 * If stream_id is lower than one we use, our | |
2032 * request won't be processed and needs to be retried. | |
2033 * If stream_id is greater or equal to the one we use, | |
2034 * we can continue normally (except we can't use this | |
2035 * connection for additional requests). If there is | |
2036 * a real error, the connection will be closed. | |
2037 */ | |
2038 | |
2039 if (ctx->stream_id < ctx->id) { | |
2040 | |
2041 /* TODO: we can retry non-idempotent requests */ | |
2042 | |
2043 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2044 "upstream sent goaway with error %ui", | |
2045 ctx->error); | |
2046 | |
2047 return NGX_ERROR; | |
2048 } | |
2049 | |
2050 continue; | |
2051 } | |
2052 | |
2053 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
2054 | |
2055 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
2056 | |
2057 if (rc == NGX_AGAIN) { | |
2058 return NGX_AGAIN; | |
2059 } | |
2060 | |
2061 if (rc == NGX_ERROR) { | |
2062 return NGX_ERROR; | |
2063 } | |
2064 | |
2065 if (ctx->in) { | |
2066 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2067 } | |
2068 | |
2069 continue; | |
2070 } | |
2071 | |
2072 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
2073 | |
2074 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
2075 | |
2076 if (rc == NGX_AGAIN) { | |
2077 return NGX_AGAIN; | |
2078 } | |
2079 | |
2080 if (rc == NGX_ERROR) { | |
2081 return NGX_ERROR; | |
2082 } | |
2083 | |
2084 if (ctx->in) { | |
2085 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2086 } | |
2087 | |
2088 continue; | |
2089 } | |
2090 | |
2091 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
2092 | |
2093 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
2094 | |
2095 if (rc == NGX_AGAIN) { | |
2096 return NGX_AGAIN; | |
2097 } | |
2098 | |
2099 if (rc == NGX_ERROR) { | |
2100 return NGX_ERROR; | |
2101 } | |
2102 | |
2103 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2104 continue; | |
2105 } | |
2106 | |
2107 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
2108 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2109 "upstream sent unexpected push promise frame"); | |
2110 return NGX_ERROR; | |
2111 } | |
2112 | |
2113 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME | |
2114 || ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) | |
2115 { | |
2116 for ( ;; ) { | |
2117 | |
2118 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
2119 | |
2120 if (rc == NGX_AGAIN) { | |
2121 break; | |
2122 } | |
2123 | |
2124 if (rc == NGX_OK) { | |
2125 | |
2126 /* a header line has been parsed successfully */ | |
2127 | |
2128 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2129 "grpc trailer: \"%V: %V\"", | |
2130 &ctx->name, &ctx->value); | |
2131 | |
2132 if (ctx->name.len && ctx->name.data[0] == ':') { | |
2133 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2134 "upstream sent invalid " | |
2135 "trailer \"%V: %V\"", | |
2136 &ctx->name, &ctx->value); | |
2137 return NGX_ERROR; | |
2138 } | |
2139 | |
2140 h = ngx_list_push(&u->headers_in.trailers); | |
2141 if (h == NULL) { | |
2142 return NGX_ERROR; | |
2143 } | |
2144 | |
2145 h->key = ctx->name; | |
2146 h->value = ctx->value; | |
2147 h->lowcase_key = h->key.data; | |
2148 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
2149 | |
2150 continue; | |
2151 } | |
2152 | |
2153 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
2154 | |
2155 /* a whole header has been parsed successfully */ | |
2156 | |
2157 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2158 "grpc trailer done"); | |
2159 | |
2160 if (ctx->end_stream) { | |
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2161 ctx->done = 1; |
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2162 break; |
7233 | 2163 } |
2164 | |
2165 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2166 "upstream sent trailer without " | |
2167 "end stream flag"); | |
2168 return NGX_ERROR; | |
2169 } | |
2170 | |
2171 /* there was error while a header line parsing */ | |
2172 | |
2173 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2174 "upstream sent invalid trailer"); | |
2175 | |
2176 return NGX_ERROR; | |
2177 } | |
2178 | |
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2179 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { |
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2180 continue; |
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2181 } |
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2182 |
7233 | 2183 /* rc == NGX_AGAIN */ |
2184 | |
2185 if (ctx->rest == 0) { | |
2186 ctx->state = ngx_http_grpc_st_start; | |
2187 continue; | |
2188 } | |
2189 | |
2190 return NGX_AGAIN; | |
2191 } | |
2192 | |
2193 if (ctx->type != NGX_HTTP_V2_DATA_FRAME) { | |
2194 | |
2195 /* priority, unknown frames */ | |
2196 | |
2197 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2198 ctx->rest -= b->last - b->pos; | |
2199 b->pos = b->last; | |
2200 return NGX_AGAIN; | |
2201 } | |
2202 | |
2203 b->pos += ctx->rest; | |
2204 ctx->rest = 0; | |
2205 ctx->state = ngx_http_grpc_st_start; | |
2206 | |
2207 continue; | |
2208 } | |
2209 | |
2210 /* | |
2211 * data frame: | |
2212 * | |
2213 * +---------------+ | |
2214 * |Pad Length? (8)| | |
2215 * +---------------+-----------------------------------------------+ | |
2216 * | Data (*) ... | |
2217 * +---------------------------------------------------------------+ | |
2218 * | Padding (*) ... | |
2219 * +---------------------------------------------------------------+ | |
2220 */ | |
2221 | |
2222 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
2223 | |
2224 if (ctx->rest == 0) { | |
2225 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2226 "upstream sent too short http2 frame"); | |
2227 return NGX_ERROR; | |
2228 } | |
2229 | |
2230 if (b->pos == b->last) { | |
2231 return NGX_AGAIN; | |
2232 } | |
2233 | |
2234 ctx->flags &= ~NGX_HTTP_V2_PADDED_FLAG; | |
2235 ctx->padding = *b->pos++; | |
2236 ctx->rest -= 1; | |
2237 | |
2238 if (ctx->padding > ctx->rest) { | |
2239 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2240 "upstream sent http2 frame with too long " | |
2241 "padding: %d in frame %uz", | |
2242 ctx->padding, ctx->rest); | |
2243 return NGX_ERROR; | |
2244 } | |
2245 | |
2246 continue; | |
2247 } | |
2248 | |
2249 if (ctx->rest == ctx->padding) { | |
2250 goto done; | |
2251 } | |
2252 | |
2253 if (b->pos == b->last) { | |
2254 return NGX_AGAIN; | |
2255 } | |
2256 | |
2257 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
2258 if (cl == NULL) { | |
2259 return NGX_ERROR; | |
2260 } | |
2261 | |
2262 *ll = cl; | |
2263 ll = &cl->next; | |
2264 | |
2265 buf = cl->buf; | |
2266 | |
2267 buf->flush = 1; | |
2268 buf->memory = 1; | |
2269 | |
2270 buf->pos = b->pos; | |
2271 buf->tag = u->output.tag; | |
2272 | |
2273 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2274 "grpc output buf %p", buf->pos); | |
2275 | |
2276 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
2277 | |
2278 ctx->rest -= b->last - b->pos; | |
2279 b->pos = b->last; | |
2280 buf->last = b->pos; | |
2281 | |
2282 return NGX_AGAIN; | |
2283 } | |
2284 | |
2285 b->pos += ctx->rest - ctx->padding; | |
2286 buf->last = b->pos; | |
2287 ctx->rest = ctx->padding; | |
2288 | |
2289 done: | |
2290 | |
2291 if (ctx->padding) { | |
2292 ctx->state = ngx_http_grpc_st_padding; | |
2293 continue; | |
2294 } | |
2295 | |
2296 ctx->state = ngx_http_grpc_st_start; | |
2297 | |
2298 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
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2299 ctx->done = 1; |
7233 | 2300 } |
2301 } | |
2302 | |
2303 return NGX_OK; | |
2304 } | |
2305 | |
2306 | |
2307 static ngx_int_t | |
2308 ngx_http_grpc_parse_frame(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2309 ngx_buf_t *b) | |
2310 { | |
2311 u_char ch, *p; | |
2312 ngx_http_grpc_state_e state; | |
2313 | |
2314 state = ctx->state; | |
2315 | |
2316 for (p = b->pos; p < b->last; p++) { | |
2317 ch = *p; | |
2318 | |
2319 #if 0 | |
2320 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2321 "grpc frame byte: %02Xd, s:%d", ch, state); | |
2322 #endif | |
2323 | |
2324 switch (state) { | |
2325 | |
2326 case ngx_http_grpc_st_start: | |
2327 ctx->rest = ch << 16; | |
2328 state = ngx_http_grpc_st_length_2; | |
2329 break; | |
2330 | |
2331 case ngx_http_grpc_st_length_2: | |
2332 ctx->rest |= ch << 8; | |
2333 state = ngx_http_grpc_st_length_3; | |
2334 break; | |
2335 | |
2336 case ngx_http_grpc_st_length_3: | |
2337 ctx->rest |= ch; | |
2338 | |
2339 if (ctx->rest > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
2340 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2341 "upstream sent too large http2 frame: %uz", | |
2342 ctx->rest); | |
2343 return NGX_ERROR; | |
2344 } | |
2345 | |
2346 state = ngx_http_grpc_st_type; | |
2347 break; | |
2348 | |
2349 case ngx_http_grpc_st_type: | |
2350 ctx->type = ch; | |
2351 state = ngx_http_grpc_st_flags; | |
2352 break; | |
2353 | |
2354 case ngx_http_grpc_st_flags: | |
2355 ctx->flags = ch; | |
2356 state = ngx_http_grpc_st_stream_id; | |
2357 break; | |
2358 | |
2359 case ngx_http_grpc_st_stream_id: | |
2360 ctx->stream_id = (ch & 0x7f) << 24; | |
2361 state = ngx_http_grpc_st_stream_id_2; | |
2362 break; | |
2363 | |
2364 case ngx_http_grpc_st_stream_id_2: | |
2365 ctx->stream_id |= ch << 16; | |
2366 state = ngx_http_grpc_st_stream_id_3; | |
2367 break; | |
2368 | |
2369 case ngx_http_grpc_st_stream_id_3: | |
2370 ctx->stream_id |= ch << 8; | |
2371 state = ngx_http_grpc_st_stream_id_4; | |
2372 break; | |
2373 | |
2374 case ngx_http_grpc_st_stream_id_4: | |
2375 ctx->stream_id |= ch; | |
2376 | |
2377 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2378 "grpc frame: %d, len: %uz, f:%d, i:%ui", | |
2379 ctx->type, ctx->rest, ctx->flags, ctx->stream_id); | |
2380 | |
2381 b->pos = p + 1; | |
2382 | |
2383 ctx->state = ngx_http_grpc_st_payload; | |
2384 ctx->frame_state = 0; | |
2385 | |
2386 return NGX_OK; | |
2387 | |
2388 /* suppress warning */ | |
2389 case ngx_http_grpc_st_payload: | |
2390 case ngx_http_grpc_st_padding: | |
2391 break; | |
2392 } | |
2393 } | |
2394 | |
2395 b->pos = p; | |
2396 ctx->state = state; | |
2397 | |
2398 return NGX_AGAIN; | |
2399 } | |
2400 | |
2401 | |
2402 static ngx_int_t | |
2403 ngx_http_grpc_parse_header(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2404 ngx_buf_t *b) | |
2405 { | |
2406 u_char ch, *p, *last; | |
2407 size_t min; | |
2408 ngx_int_t rc; | |
2409 enum { | |
2410 sw_start = 0, | |
2411 sw_padding_length, | |
2412 sw_dependency, | |
2413 sw_dependency_2, | |
2414 sw_dependency_3, | |
2415 sw_dependency_4, | |
2416 sw_weight, | |
2417 sw_fragment, | |
2418 sw_padding | |
2419 } state; | |
2420 | |
2421 state = ctx->frame_state; | |
2422 | |
2423 if (state == sw_start) { | |
2424 | |
2425 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2426 "grpc parse header: start"); | |
2427 | |
2428 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME) { | |
2429 ctx->parsing_headers = 1; | |
2430 ctx->fragment_state = 0; | |
2431 | |
2432 min = (ctx->flags & NGX_HTTP_V2_PADDED_FLAG ? 1 : 0) | |
2433 + (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG ? 5 : 0); | |
2434 | |
2435 if (ctx->rest < min) { | |
2436 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2437 "upstream sent headers frame " | |
2438 "with invalid length: %uz", | |
2439 ctx->rest); | |
2440 return NGX_ERROR; | |
2441 } | |
2442 | |
2443 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
2444 ctx->end_stream = 1; | |
2445 } | |
2446 | |
2447 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
2448 state = sw_padding_length; | |
2449 | |
2450 } else if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
2451 state = sw_dependency; | |
2452 | |
2453 } else { | |
2454 state = sw_fragment; | |
2455 } | |
2456 | |
2457 } else if (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) { | |
2458 state = sw_fragment; | |
2459 } | |
2460 | |
2461 ctx->padding = 0; | |
7242
25a4353633a0
gRPC: fixed missing state save in frame header parsing.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7240
diff
changeset
|
2462 ctx->frame_state = state; |
7233 | 2463 } |
2464 | |
2465 if (state < sw_fragment) { | |
2466 | |
2467 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2468 last = b->last; | |
2469 | |
2470 } else { | |
2471 last = b->pos + ctx->rest; | |
2472 } | |
2473 | |
2474 for (p = b->pos; p < last; p++) { | |
2475 ch = *p; | |
2476 | |
2477 #if 0 | |
2478 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2479 "grpc header byte: %02Xd s:%d", ch, state); | |
2480 #endif | |
2481 | |
2482 /* | |
2483 * headers frame: | |
2484 * | |
2485 * +---------------+ | |
2486 * |Pad Length? (8)| | |
2487 * +-+-------------+----------------------------------------------+ | |
2488 * |E| Stream Dependency? (31) | | |
2489 * +-+-------------+----------------------------------------------+ | |
2490 * | Weight? (8) | | |
2491 * +-+-------------+----------------------------------------------+ | |
2492 * | Header Block Fragment (*) ... | |
2493 * +--------------------------------------------------------------+ | |
2494 * | Padding (*) ... | |
2495 * +--------------------------------------------------------------+ | |
2496 */ | |
2497 | |
2498 switch (state) { | |
2499 | |
2500 case sw_padding_length: | |
2501 | |
2502 ctx->padding = ch; | |
2503 | |
2504 if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
2505 state = sw_dependency; | |
2506 break; | |
2507 } | |
2508 | |
2509 goto fragment; | |
2510 | |
2511 case sw_dependency: | |
2512 state = sw_dependency_2; | |
2513 break; | |
2514 | |
2515 case sw_dependency_2: | |
2516 state = sw_dependency_3; | |
2517 break; | |
2518 | |
2519 case sw_dependency_3: | |
2520 state = sw_dependency_4; | |
2521 break; | |
2522 | |
2523 case sw_dependency_4: | |
2524 state = sw_weight; | |
2525 break; | |
2526 | |
2527 case sw_weight: | |
2528 goto fragment; | |
2529 | |
2530 /* suppress warning */ | |
2531 case sw_start: | |
2532 case sw_fragment: | |
2533 case sw_padding: | |
2534 break; | |
2535 } | |
2536 } | |
2537 | |
2538 ctx->rest -= p - b->pos; | |
2539 b->pos = p; | |
2540 | |
2541 ctx->frame_state = state; | |
2542 return NGX_AGAIN; | |
2543 | |
2544 fragment: | |
2545 | |
2546 p++; | |
2547 ctx->rest -= p - b->pos; | |
2548 b->pos = p; | |
2549 | |
2550 if (ctx->padding > ctx->rest) { | |
2551 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2552 "upstream sent http2 frame with too long " | |
2553 "padding: %d in frame %uz", | |
2554 ctx->padding, ctx->rest); | |
2555 return NGX_ERROR; | |
2556 } | |
2557 | |
2558 state = sw_fragment; | |
2559 ctx->frame_state = state; | |
2560 } | |
2561 | |
2562 if (state == sw_fragment) { | |
2563 | |
2564 rc = ngx_http_grpc_parse_fragment(r, ctx, b); | |
2565 | |
2566 if (rc == NGX_AGAIN) { | |
2567 return NGX_AGAIN; | |
2568 } | |
2569 | |
2570 if (rc == NGX_ERROR) { | |
2571 return NGX_ERROR; | |
2572 } | |
2573 | |
2574 if (rc == NGX_OK) { | |
2575 return NGX_OK; | |
2576 } | |
2577 | |
2578 /* rc == NGX_DONE */ | |
2579 | |
2580 state = sw_padding; | |
2581 ctx->frame_state = state; | |
2582 } | |
2583 | |
2584 if (state == sw_padding) { | |
2585 | |
2586 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2587 | |
2588 ctx->rest -= b->last - b->pos; | |
2589 b->pos = b->last; | |
2590 | |
2591 return NGX_AGAIN; | |
2592 } | |
2593 | |
2594 b->pos += ctx->rest; | |
2595 ctx->rest = 0; | |
2596 | |
2597 ctx->state = ngx_http_grpc_st_start; | |
2598 | |
2599 if (ctx->flags & NGX_HTTP_V2_END_HEADERS_FLAG) { | |
2600 | |
2601 if (ctx->fragment_state) { | |
2602 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2603 "upstream sent truncated http2 header"); | |
2604 return NGX_ERROR; | |
2605 } | |
2606 | |
2607 ctx->parsing_headers = 0; | |
2608 | |
2609 return NGX_HTTP_PARSE_HEADER_DONE; | |
2610 } | |
2611 | |
2612 return NGX_AGAIN; | |
2613 } | |
2614 | |
2615 /* unreachable */ | |
2616 | |
2617 return NGX_ERROR; | |
2618 } | |
2619 | |
2620 | |
2621 static ngx_int_t | |
2622 ngx_http_grpc_parse_fragment(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2623 ngx_buf_t *b) | |
2624 { | |
2625 u_char ch, *p, *last; | |
2626 size_t size; | |
2627 ngx_uint_t index, size_update; | |
2628 enum { | |
2629 sw_start = 0, | |
2630 sw_index, | |
2631 sw_name_length, | |
2632 sw_name_length_2, | |
2633 sw_name_length_3, | |
2634 sw_name_length_4, | |
2635 sw_name, | |
2636 sw_name_bytes, | |
2637 sw_value_length, | |
2638 sw_value_length_2, | |
2639 sw_value_length_3, | |
2640 sw_value_length_4, | |
2641 sw_value, | |
2642 sw_value_bytes | |
2643 } state; | |
2644 | |
2645 /* header block fragment */ | |
2646 | |
2647 #if 0 | |
2648 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2649 "grpc header fragment %p:%p rest:%uz", | |
2650 b->pos, b->last, ctx->rest); | |
2651 #endif | |
2652 | |
2653 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
2654 last = b->last; | |
2655 | |
2656 } else { | |
2657 last = b->pos + ctx->rest - ctx->padding; | |
2658 } | |
2659 | |
2660 state = ctx->fragment_state; | |
2661 | |
2662 for (p = b->pos; p < last; p++) { | |
2663 ch = *p; | |
2664 | |
2665 #if 0 | |
2666 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2667 "grpc header byte: %02Xd s:%d", ch, state); | |
2668 #endif | |
2669 | |
2670 switch (state) { | |
2671 | |
2672 case sw_start: | |
2673 ctx->index = 0; | |
2674 | |
2675 if ((ch & 0x80) == 0x80) { | |
2676 /* | |
2677 * indexed header: | |
2678 * | |
2679 * 0 1 2 3 4 5 6 7 | |
2680 * +---+---+---+---+---+---+---+---+ | |
2681 * | 1 | Index (7+) | | |
2682 * +---+---------------------------+ | |
2683 */ | |
2684 | |
2685 index = ch & ~0x80; | |
2686 | |
2687 if (index == 0 || index > 61) { | |
2688 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2689 "upstream sent invalid http2 " | |
2690 "table index: %ui", index); | |
2691 return NGX_ERROR; | |
2692 } | |
2693 | |
2694 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2695 "grpc indexed header: %ui", index); | |
2696 | |
2697 ctx->index = index; | |
2698 ctx->literal = 0; | |
2699 | |
2700 goto done; | |
2701 | |
2702 } else if ((ch & 0xc0) == 0x40) { | |
2703 /* | |
2704 * literal header with incremental indexing: | |
2705 * | |
2706 * 0 1 2 3 4 5 6 7 | |
2707 * +---+---+---+---+---+---+---+---+ | |
2708 * | 0 | 1 | Index (6+) | | |
2709 * +---+---+-----------------------+ | |
2710 * | H | Value Length (7+) | | |
2711 * +---+---------------------------+ | |
2712 * | Value String (Length octets) | | |
2713 * +-------------------------------+ | |
2714 * | |
2715 * 0 1 2 3 4 5 6 7 | |
2716 * +---+---+---+---+---+---+---+---+ | |
2717 * | 0 | 1 | 0 | | |
2718 * +---+---+-----------------------+ | |
2719 * | H | Name Length (7+) | | |
2720 * +---+---------------------------+ | |
2721 * | Name String (Length octets) | | |
2722 * +---+---------------------------+ | |
2723 * | H | Value Length (7+) | | |
2724 * +---+---------------------------+ | |
2725 * | Value String (Length octets) | | |
2726 * +-------------------------------+ | |
2727 */ | |
2728 | |
2729 index = ch & ~0xc0; | |
2730 | |
2731 if (index > 61) { | |
2732 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2733 "upstream sent invalid http2 " | |
2734 "table index: %ui", index); | |
2735 return NGX_ERROR; | |
2736 } | |
2737 | |
2738 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2739 "grpc literal header: %ui", index); | |
2740 | |
2741 if (index == 0) { | |
2742 state = sw_name_length; | |
2743 break; | |
2744 } | |
2745 | |
2746 ctx->index = index; | |
2747 ctx->literal = 1; | |
2748 | |
2749 state = sw_value_length; | |
2750 break; | |
2751 | |
2752 } else if ((ch & 0xe0) == 0x20) { | |
2753 /* | |
2754 * dynamic table size update: | |
2755 * | |
2756 * 0 1 2 3 4 5 6 7 | |
2757 * +---+---+---+---+---+---+---+---+ | |
2758 * | 0 | 0 | 1 | Max size (5+) | | |
2759 * +---+---------------------------+ | |
2760 */ | |
2761 | |
2762 size_update = ch & ~0xe0; | |
2763 | |
2764 if (size_update > 0) { | |
2765 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2766 "upstream sent invalid http2 " | |
2767 "dynamic table size update: %ui", | |
2768 size_update); | |
2769 return NGX_ERROR; | |
2770 } | |
2771 | |
2772 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2773 "grpc table size update: %ui", size_update); | |
2774 | |
2775 break; | |
2776 | |
2777 } else if ((ch & 0xf0) == 0x10) { | |
2778 /* | |
2779 * literal header field never indexed: | |
2780 * | |
2781 * 0 1 2 3 4 5 6 7 | |
2782 * +---+---+---+---+---+---+---+---+ | |
2783 * | 0 | 0 | 0 | 1 | Index (4+) | | |
2784 * +---+---+-----------------------+ | |
2785 * | H | Value Length (7+) | | |
2786 * +---+---------------------------+ | |
2787 * | Value String (Length octets) | | |
2788 * +-------------------------------+ | |
2789 * | |
2790 * 0 1 2 3 4 5 6 7 | |
2791 * +---+---+---+---+---+---+---+---+ | |
2792 * | 0 | 0 | 0 | 1 | 0 | | |
2793 * +---+---+-----------------------+ | |
2794 * | H | Name Length (7+) | | |
2795 * +---+---------------------------+ | |
2796 * | Name String (Length octets) | | |
2797 * +---+---------------------------+ | |
2798 * | H | Value Length (7+) | | |
2799 * +---+---------------------------+ | |
2800 * | Value String (Length octets) | | |
2801 * +-------------------------------+ | |
2802 */ | |
2803 | |
2804 index = ch & ~0xf0; | |
2805 | |
2806 if (index == 0x0f) { | |
2807 ctx->index = index; | |
2808 ctx->literal = 1; | |
2809 state = sw_index; | |
2810 break; | |
2811 } | |
2812 | |
2813 if (index == 0) { | |
2814 state = sw_name_length; | |
2815 break; | |
2816 } | |
2817 | |
2818 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2819 "grpc literal header never indexed: %ui", | |
2820 index); | |
2821 | |
2822 ctx->index = index; | |
2823 ctx->literal = 1; | |
2824 | |
2825 state = sw_value_length; | |
2826 break; | |
2827 | |
2828 } else if ((ch & 0xf0) == 0x00) { | |
2829 /* | |
2830 * literal header field without indexing: | |
2831 * | |
2832 * 0 1 2 3 4 5 6 7 | |
2833 * +---+---+---+---+---+---+---+---+ | |
2834 * | 0 | 0 | 0 | 0 | Index (4+) | | |
2835 * +---+---+-----------------------+ | |
2836 * | H | Value Length (7+) | | |
2837 * +---+---------------------------+ | |
2838 * | Value String (Length octets) | | |
2839 * +-------------------------------+ | |
2840 * | |
2841 * 0 1 2 3 4 5 6 7 | |
2842 * +---+---+---+---+---+---+---+---+ | |
2843 * | 0 | 0 | 0 | 0 | 0 | | |
2844 * +---+---+-----------------------+ | |
2845 * | H | Name Length (7+) | | |
2846 * +---+---------------------------+ | |
2847 * | Name String (Length octets) | | |
2848 * +---+---------------------------+ | |
2849 * | H | Value Length (7+) | | |
2850 * +---+---------------------------+ | |
2851 * | Value String (Length octets) | | |
2852 * +-------------------------------+ | |
2853 */ | |
2854 | |
2855 index = ch & ~0xf0; | |
2856 | |
2857 if (index == 0x0f) { | |
2858 ctx->index = index; | |
2859 ctx->literal = 1; | |
2860 state = sw_index; | |
2861 break; | |
2862 } | |
2863 | |
2864 if (index == 0) { | |
2865 state = sw_name_length; | |
2866 break; | |
2867 } | |
2868 | |
2869 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2870 "grpc literal header without indexing: %ui", | |
2871 index); | |
2872 | |
2873 ctx->index = index; | |
2874 ctx->literal = 1; | |
2875 | |
2876 state = sw_value_length; | |
2877 break; | |
2878 } | |
2879 | |
2880 /* not reached */ | |
2881 | |
2882 return NGX_ERROR; | |
2883 | |
2884 case sw_index: | |
2885 ctx->index = ctx->index + (ch & ~0x80); | |
2886 | |
2887 if (ch & 0x80) { | |
2888 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2889 "upstream sent http2 table index " | |
2890 "with continuation flag"); | |
2891 return NGX_ERROR; | |
2892 } | |
2893 | |
2894 if (ctx->index > 61) { | |
2895 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2896 "upstream sent invalid http2 " | |
2897 "table index: %ui", ctx->index); | |
2898 return NGX_ERROR; | |
2899 } | |
2900 | |
2901 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2902 "grpc header index: %ui", ctx->index); | |
2903 | |
2904 state = sw_value_length; | |
2905 break; | |
2906 | |
2907 case sw_name_length: | |
2908 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
2909 ctx->field_length = ch & ~0x80; | |
2910 | |
2911 if (ctx->field_length == 0x7f) { | |
2912 state = sw_name_length_2; | |
2913 break; | |
2914 } | |
2915 | |
2916 if (ctx->field_length == 0) { | |
2917 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2918 "upstream sent zero http2 " | |
2919 "header name length"); | |
2920 return NGX_ERROR; | |
2921 } | |
2922 | |
2923 state = sw_name; | |
2924 break; | |
2925 | |
2926 case sw_name_length_2: | |
2927 ctx->field_length += ch & ~0x80; | |
2928 | |
2929 if (ch & 0x80) { | |
2930 state = sw_name_length_3; | |
2931 break; | |
2932 } | |
2933 | |
2934 state = sw_name; | |
2935 break; | |
2936 | |
2937 case sw_name_length_3: | |
2938 ctx->field_length += (ch & ~0x80) << 7; | |
2939 | |
2940 if (ch & 0x80) { | |
2941 state = sw_name_length_4; | |
2942 break; | |
2943 } | |
2944 | |
2945 state = sw_name; | |
2946 break; | |
2947 | |
2948 case sw_name_length_4: | |
2949 ctx->field_length += (ch & ~0x80) << 14; | |
2950 | |
2951 if (ch & 0x80) { | |
2952 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2953 "upstream sent too large http2 " | |
2954 "header name length"); | |
2955 return NGX_ERROR; | |
2956 } | |
2957 | |
2958 state = sw_name; | |
2959 break; | |
2960 | |
2961 case sw_name: | |
2962 ctx->name.len = ctx->field_huffman ? | |
2963 ctx->field_length * 8 / 5 : ctx->field_length; | |
2964 | |
2965 ctx->name.data = ngx_pnalloc(r->pool, ctx->name.len + 1); | |
2966 if (ctx->name.data == NULL) { | |
2967 return NGX_ERROR; | |
2968 } | |
2969 | |
2970 ctx->field_end = ctx->name.data; | |
2971 ctx->field_rest = ctx->field_length; | |
2972 ctx->field_state = 0; | |
2973 | |
2974 state = sw_name_bytes; | |
2975 | |
2976 /* fall through */ | |
2977 | |
2978 case sw_name_bytes: | |
2979 | |
2980 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2981 "grpc name: len:%uz h:%d last:%uz, rest:%uz", | |
2982 ctx->field_length, | |
2983 ctx->field_huffman, | |
2984 last - p, | |
2985 ctx->rest - (p - b->pos)); | |
2986 | |
2987 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
2988 ctx->field_rest -= size; | |
2989 | |
2990 if (ctx->field_huffman) { | |
2991 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
2992 &ctx->field_end, | |
2993 ctx->field_rest == 0, | |
2994 r->connection->log) | |
2995 != NGX_OK) | |
2996 { | |
2997 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2998 "upstream sent invalid encoded header"); | |
2999 return NGX_ERROR; | |
3000 } | |
3001 | |
3002 ctx->name.len = ctx->field_end - ctx->name.data; | |
3003 ctx->name.data[ctx->name.len] = '\0'; | |
3004 | |
3005 } else { | |
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3006 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
7233 | 3007 ctx->name.data[ctx->name.len] = '\0'; |
3008 } | |
3009 | |
3010 p += size - 1; | |
3011 | |
3012 if (ctx->field_rest == 0) { | |
3013 state = sw_value_length; | |
3014 } | |
3015 | |
3016 break; | |
3017 | |
3018 case sw_value_length: | |
3019 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
3020 ctx->field_length = ch & ~0x80; | |
3021 | |
3022 if (ctx->field_length == 0x7f) { | |
3023 state = sw_value_length_2; | |
3024 break; | |
3025 } | |
3026 | |
3027 if (ctx->field_length == 0) { | |
3028 ngx_str_set(&ctx->value, ""); | |
3029 goto done; | |
3030 } | |
3031 | |
3032 state = sw_value; | |
3033 break; | |
3034 | |
3035 case sw_value_length_2: | |
3036 ctx->field_length += ch & ~0x80; | |
3037 | |
3038 if (ch & 0x80) { | |
3039 state = sw_value_length_3; | |
3040 break; | |
3041 } | |
3042 | |
3043 state = sw_value; | |
3044 break; | |
3045 | |
3046 case sw_value_length_3: | |
3047 ctx->field_length += (ch & ~0x80) << 7; | |
3048 | |
3049 if (ch & 0x80) { | |
3050 state = sw_value_length_4; | |
3051 break; | |
3052 } | |
3053 | |
3054 state = sw_value; | |
3055 break; | |
3056 | |
3057 case sw_value_length_4: | |
3058 ctx->field_length += (ch & ~0x80) << 14; | |
3059 | |
3060 if (ch & 0x80) { | |
3061 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3062 "upstream sent too large http2 " | |
3063 "header value length"); | |
3064 return NGX_ERROR; | |
3065 } | |
3066 | |
3067 state = sw_value; | |
3068 break; | |
3069 | |
3070 case sw_value: | |
3071 ctx->value.len = ctx->field_huffman ? | |
3072 ctx->field_length * 8 / 5 : ctx->field_length; | |
3073 | |
3074 ctx->value.data = ngx_pnalloc(r->pool, ctx->value.len + 1); | |
3075 if (ctx->value.data == NULL) { | |
3076 return NGX_ERROR; | |
3077 } | |
3078 | |
3079 ctx->field_end = ctx->value.data; | |
3080 ctx->field_rest = ctx->field_length; | |
3081 ctx->field_state = 0; | |
3082 | |
3083 state = sw_value_bytes; | |
3084 | |
3085 /* fall through */ | |
3086 | |
3087 case sw_value_bytes: | |
3088 | |
3089 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3090 "grpc value: len:%uz h:%d last:%uz, rest:%uz", | |
3091 ctx->field_length, | |
3092 ctx->field_huffman, | |
3093 last - p, | |
3094 ctx->rest - (p - b->pos)); | |
3095 | |
3096 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
3097 ctx->field_rest -= size; | |
3098 | |
3099 if (ctx->field_huffman) { | |
3100 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
3101 &ctx->field_end, | |
3102 ctx->field_rest == 0, | |
3103 r->connection->log) | |
3104 != NGX_OK) | |
3105 { | |
3106 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3107 "upstream sent invalid encoded header"); | |
3108 return NGX_ERROR; | |
3109 } | |
3110 | |
3111 ctx->value.len = ctx->field_end - ctx->value.data; | |
3112 ctx->value.data[ctx->value.len] = '\0'; | |
3113 | |
3114 } else { | |
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3115 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
7233 | 3116 ctx->value.data[ctx->value.len] = '\0'; |
3117 } | |
3118 | |
3119 p += size - 1; | |
3120 | |
3121 if (ctx->field_rest == 0) { | |
3122 goto done; | |
3123 } | |
3124 | |
3125 break; | |
3126 } | |
3127 | |
3128 continue; | |
3129 | |
3130 done: | |
3131 | |
3132 p++; | |
3133 ctx->rest -= p - b->pos; | |
3134 ctx->fragment_state = sw_start; | |
3135 b->pos = p; | |
3136 | |
3137 if (ctx->index) { | |
3138 ctx->name = *ngx_http_v2_get_static_name(ctx->index); | |
3139 } | |
3140 | |
3141 if (ctx->index && !ctx->literal) { | |
3142 ctx->value = *ngx_http_v2_get_static_value(ctx->index); | |
3143 } | |
3144 | |
3145 if (!ctx->index) { | |
3146 if (ngx_http_grpc_validate_header_name(r, &ctx->name) != NGX_OK) { | |
3147 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3148 "upstream sent invalid header: \"%V: %V\"", | |
3149 &ctx->name, &ctx->value); | |
3150 return NGX_ERROR; | |
3151 } | |
3152 } | |
3153 | |
3154 if (!ctx->index || ctx->literal) { | |
3155 if (ngx_http_grpc_validate_header_value(r, &ctx->value) != NGX_OK) { | |
3156 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3157 "upstream sent invalid header: \"%V: %V\"", | |
3158 &ctx->name, &ctx->value); | |
3159 return NGX_ERROR; | |
3160 } | |
3161 } | |
3162 | |
3163 return NGX_OK; | |
3164 } | |
3165 | |
3166 ctx->rest -= p - b->pos; | |
3167 ctx->fragment_state = state; | |
3168 b->pos = p; | |
3169 | |
3170 if (ctx->rest > ctx->padding) { | |
3171 return NGX_AGAIN; | |
3172 } | |
3173 | |
3174 return NGX_DONE; | |
3175 } | |
3176 | |
3177 | |
3178 static ngx_int_t | |
3179 ngx_http_grpc_validate_header_name(ngx_http_request_t *r, ngx_str_t *s) | |
3180 { | |
3181 u_char ch; | |
3182 ngx_uint_t i; | |
3183 | |
3184 for (i = 0; i < s->len; i++) { | |
3185 ch = s->data[i]; | |
3186 | |
3187 if (ch == ':' && i > 0) { | |
3188 return NGX_ERROR; | |
3189 } | |
3190 | |
3191 if (ch >= 'A' && ch <= 'Z') { | |
3192 return NGX_ERROR; | |
3193 } | |
3194 | |
3195 if (ch == '\0' || ch == CR || ch == LF) { | |
3196 return NGX_ERROR; | |
3197 } | |
3198 } | |
3199 | |
3200 return NGX_OK; | |
3201 } | |
3202 | |
3203 | |
3204 static ngx_int_t | |
3205 ngx_http_grpc_validate_header_value(ngx_http_request_t *r, ngx_str_t *s) | |
3206 { | |
3207 u_char ch; | |
3208 ngx_uint_t i; | |
3209 | |
3210 for (i = 0; i < s->len; i++) { | |
3211 ch = s->data[i]; | |
3212 | |
3213 if (ch == '\0' || ch == CR || ch == LF) { | |
3214 return NGX_ERROR; | |
3215 } | |
3216 } | |
3217 | |
3218 return NGX_OK; | |
3219 } | |
3220 | |
3221 | |
3222 static ngx_int_t | |
3223 ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3224 ngx_buf_t *b) | |
3225 { | |
3226 u_char ch, *p, *last; | |
3227 enum { | |
3228 sw_start = 0, | |
3229 sw_error_2, | |
3230 sw_error_3, | |
3231 sw_error_4 | |
3232 } state; | |
3233 | |
3234 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3235 last = b->last; | |
3236 | |
3237 } else { | |
3238 last = b->pos + ctx->rest; | |
3239 } | |
3240 | |
3241 state = ctx->frame_state; | |
3242 | |
3243 if (state == sw_start) { | |
3244 if (ctx->rest != 4) { | |
3245 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3246 "upstream sent rst stream frame " | |
3247 "with invalid length: %uz", | |
3248 ctx->rest); | |
3249 return NGX_ERROR; | |
3250 } | |
3251 } | |
3252 | |
3253 for (p = b->pos; p < last; p++) { | |
3254 ch = *p; | |
3255 | |
3256 #if 0 | |
3257 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3258 "grpc rst byte: %02Xd s:%d", ch, state); | |
3259 #endif | |
3260 | |
3261 switch (state) { | |
3262 | |
3263 case sw_start: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3264 ctx->error = (ngx_uint_t) ch << 24; |
7233 | 3265 state = sw_error_2; |
3266 break; | |
3267 | |
3268 case sw_error_2: | |
3269 ctx->error |= ch << 16; | |
3270 state = sw_error_3; | |
3271 break; | |
3272 | |
3273 case sw_error_3: | |
3274 ctx->error |= ch << 8; | |
3275 state = sw_error_4; | |
3276 break; | |
3277 | |
3278 case sw_error_4: | |
3279 ctx->error |= ch; | |
3280 state = sw_start; | |
3281 | |
3282 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3283 "grpc error: %ui", ctx->error); | |
3284 | |
3285 break; | |
3286 } | |
3287 } | |
3288 | |
3289 ctx->rest -= p - b->pos; | |
3290 ctx->frame_state = state; | |
3291 b->pos = p; | |
3292 | |
3293 if (ctx->rest > 0) { | |
3294 return NGX_AGAIN; | |
3295 } | |
3296 | |
3297 return NGX_OK; | |
3298 } | |
3299 | |
3300 | |
3301 static ngx_int_t | |
3302 ngx_http_grpc_parse_goaway(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3303 ngx_buf_t *b) | |
3304 { | |
3305 u_char ch, *p, *last; | |
3306 enum { | |
3307 sw_start = 0, | |
3308 sw_last_stream_id_2, | |
3309 sw_last_stream_id_3, | |
3310 sw_last_stream_id_4, | |
3311 sw_error, | |
3312 sw_error_2, | |
3313 sw_error_3, | |
3314 sw_error_4, | |
3315 sw_debug | |
3316 } state; | |
3317 | |
3318 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3319 last = b->last; | |
3320 | |
3321 } else { | |
3322 last = b->pos + ctx->rest; | |
3323 } | |
3324 | |
3325 state = ctx->frame_state; | |
3326 | |
3327 if (state == sw_start) { | |
3328 | |
3329 if (ctx->stream_id) { | |
3330 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3331 "upstream sent goaway frame " | |
3332 "with non-zero stream id: %ui", | |
3333 ctx->stream_id); | |
3334 return NGX_ERROR; | |
3335 } | |
3336 | |
3337 if (ctx->rest < 8) { | |
3338 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3339 "upstream sent goaway frame " | |
3340 "with invalid length: %uz", | |
3341 ctx->rest); | |
3342 return NGX_ERROR; | |
3343 } | |
3344 } | |
3345 | |
3346 for (p = b->pos; p < last; p++) { | |
3347 ch = *p; | |
3348 | |
3349 #if 0 | |
3350 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3351 "grpc goaway byte: %02Xd s:%d", ch, state); | |
3352 #endif | |
3353 | |
3354 switch (state) { | |
3355 | |
3356 case sw_start: | |
3357 ctx->stream_id = (ch & 0x7f) << 24; | |
3358 state = sw_last_stream_id_2; | |
3359 break; | |
3360 | |
3361 case sw_last_stream_id_2: | |
3362 ctx->stream_id |= ch << 16; | |
3363 state = sw_last_stream_id_3; | |
3364 break; | |
3365 | |
3366 case sw_last_stream_id_3: | |
3367 ctx->stream_id |= ch << 8; | |
3368 state = sw_last_stream_id_4; | |
3369 break; | |
3370 | |
3371 case sw_last_stream_id_4: | |
3372 ctx->stream_id |= ch; | |
3373 state = sw_error; | |
3374 break; | |
3375 | |
3376 case sw_error: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3377 ctx->error = (ngx_uint_t) ch << 24; |
7233 | 3378 state = sw_error_2; |
3379 break; | |
3380 | |
3381 case sw_error_2: | |
3382 ctx->error |= ch << 16; | |
3383 state = sw_error_3; | |
3384 break; | |
3385 | |
3386 case sw_error_3: | |
3387 ctx->error |= ch << 8; | |
3388 state = sw_error_4; | |
3389 break; | |
3390 | |
3391 case sw_error_4: | |
3392 ctx->error |= ch; | |
3393 state = sw_debug; | |
3394 break; | |
3395 | |
3396 case sw_debug: | |
3397 break; | |
3398 } | |
3399 } | |
3400 | |
3401 ctx->rest -= p - b->pos; | |
3402 ctx->frame_state = state; | |
3403 b->pos = p; | |
3404 | |
3405 if (ctx->rest > 0) { | |
3406 return NGX_AGAIN; | |
3407 } | |
3408 | |
3409 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3410 "grpc goaway: %ui, stream %ui", | |
3411 ctx->error, ctx->stream_id); | |
3412 | |
3413 ctx->state = ngx_http_grpc_st_start; | |
3414 | |
3415 return NGX_OK; | |
3416 } | |
3417 | |
3418 | |
3419 static ngx_int_t | |
3420 ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
3421 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
3422 { | |
3423 u_char ch, *p, *last; | |
3424 enum { | |
3425 sw_start = 0, | |
3426 sw_size_2, | |
3427 sw_size_3, | |
3428 sw_size_4 | |
3429 } state; | |
3430 | |
3431 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3432 last = b->last; | |
3433 | |
3434 } else { | |
3435 last = b->pos + ctx->rest; | |
3436 } | |
3437 | |
3438 state = ctx->frame_state; | |
3439 | |
3440 if (state == sw_start) { | |
3441 if (ctx->rest != 4) { | |
3442 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3443 "upstream sent window update frame " | |
3444 "with invalid length: %uz", | |
3445 ctx->rest); | |
3446 return NGX_ERROR; | |
3447 } | |
3448 } | |
3449 | |
3450 for (p = b->pos; p < last; p++) { | |
3451 ch = *p; | |
3452 | |
3453 #if 0 | |
3454 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3455 "grpc window update byte: %02Xd s:%d", ch, state); | |
3456 #endif | |
3457 | |
3458 switch (state) { | |
3459 | |
3460 case sw_start: | |
3461 ctx->window_update = (ch & 0x7f) << 24; | |
3462 state = sw_size_2; | |
3463 break; | |
3464 | |
3465 case sw_size_2: | |
3466 ctx->window_update |= ch << 16; | |
3467 state = sw_size_3; | |
3468 break; | |
3469 | |
3470 case sw_size_3: | |
3471 ctx->window_update |= ch << 8; | |
3472 state = sw_size_4; | |
3473 break; | |
3474 | |
3475 case sw_size_4: | |
3476 ctx->window_update |= ch; | |
3477 state = sw_start; | |
3478 break; | |
3479 } | |
3480 } | |
3481 | |
3482 ctx->rest -= p - b->pos; | |
3483 ctx->frame_state = state; | |
3484 b->pos = p; | |
3485 | |
3486 if (ctx->rest > 0) { | |
3487 return NGX_AGAIN; | |
3488 } | |
3489 | |
3490 ctx->state = ngx_http_grpc_st_start; | |
3491 | |
3492 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3493 "grpc window update: %ui", ctx->window_update); | |
3494 | |
3495 if (ctx->stream_id) { | |
3496 | |
3497 if (ctx->window_update > (size_t) NGX_HTTP_V2_MAX_WINDOW | |
3498 - ctx->send_window) | |
3499 { | |
3500 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3501 "upstream sent too large window update"); | |
3502 return NGX_ERROR; | |
3503 } | |
3504 | |
3505 ctx->send_window += ctx->window_update; | |
3506 | |
3507 } else { | |
3508 | |
3509 if (ctx->window_update > NGX_HTTP_V2_MAX_WINDOW | |
3510 - ctx->connection->send_window) | |
3511 { | |
3512 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3513 "upstream sent too large window update"); | |
3514 return NGX_ERROR; | |
3515 } | |
3516 | |
3517 ctx->connection->send_window += ctx->window_update; | |
3518 } | |
3519 | |
3520 return NGX_OK; | |
3521 } | |
3522 | |
3523 | |
3524 static ngx_int_t | |
3525 ngx_http_grpc_parse_settings(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3526 ngx_buf_t *b) | |
3527 { | |
3528 u_char ch, *p, *last; | |
3529 ssize_t window_update; | |
3530 enum { | |
3531 sw_start = 0, | |
3532 sw_id, | |
3533 sw_id_2, | |
3534 sw_value, | |
3535 sw_value_2, | |
3536 sw_value_3, | |
3537 sw_value_4 | |
3538 } state; | |
3539 | |
3540 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3541 last = b->last; | |
3542 | |
3543 } else { | |
3544 last = b->pos + ctx->rest; | |
3545 } | |
3546 | |
3547 state = ctx->frame_state; | |
3548 | |
3549 if (state == sw_start) { | |
3550 | |
3551 if (ctx->stream_id) { | |
3552 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3553 "upstream sent settings frame " | |
3554 "with non-zero stream id: %ui", | |
3555 ctx->stream_id); | |
3556 return NGX_ERROR; | |
3557 } | |
3558 | |
3559 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
3560 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3561 "grpc settings ack"); | |
3562 | |
3563 if (ctx->rest != 0) { | |
3564 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3565 "upstream sent settings frame " | |
3566 "with ack flag and non-zero length: %uz", | |
3567 ctx->rest); | |
3568 return NGX_ERROR; | |
3569 } | |
3570 | |
3571 ctx->state = ngx_http_grpc_st_start; | |
3572 | |
3573 return NGX_OK; | |
3574 } | |
3575 | |
3576 if (ctx->rest % 6 != 0) { | |
3577 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3578 "upstream sent settings frame " | |
3579 "with invalid length: %uz", | |
3580 ctx->rest); | |
3581 return NGX_ERROR; | |
3582 } | |
7387
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3583 |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3584 if (ctx->free == NULL && ctx->settings++ > 1000) { |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3585 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3586 "upstream sent too many settings frames"); |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3587 return NGX_ERROR; |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3588 } |
7233 | 3589 } |
3590 | |
3591 for (p = b->pos; p < last; p++) { | |
3592 ch = *p; | |
3593 | |
3594 #if 0 | |
3595 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3596 "grpc settings byte: %02Xd s:%d", ch, state); | |
3597 #endif | |
3598 | |
3599 switch (state) { | |
3600 | |
3601 case sw_start: | |
3602 case sw_id: | |
3603 ctx->setting_id = ch << 8; | |
3604 state = sw_id_2; | |
3605 break; | |
3606 | |
3607 case sw_id_2: | |
3608 ctx->setting_id |= ch; | |
3609 state = sw_value; | |
3610 break; | |
3611 | |
3612 case sw_value: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3613 ctx->setting_value = (ngx_uint_t) ch << 24; |
7233 | 3614 state = sw_value_2; |
3615 break; | |
3616 | |
3617 case sw_value_2: | |
3618 ctx->setting_value |= ch << 16; | |
3619 state = sw_value_3; | |
3620 break; | |
3621 | |
3622 case sw_value_3: | |
3623 ctx->setting_value |= ch << 8; | |
3624 state = sw_value_4; | |
3625 break; | |
3626 | |
3627 case sw_value_4: | |
3628 ctx->setting_value |= ch; | |
3629 state = sw_id; | |
3630 | |
3631 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3632 "grpc setting: %ui %ui", | |
3633 ctx->setting_id, ctx->setting_value); | |
3634 | |
3635 /* | |
3636 * The following settings are defined by the protocol: | |
3637 * | |
3638 * SETTINGS_HEADER_TABLE_SIZE, SETTINGS_ENABLE_PUSH, | |
3639 * SETTINGS_MAX_CONCURRENT_STREAMS, SETTINGS_INITIAL_WINDOW_SIZE, | |
3640 * SETTINGS_MAX_FRAME_SIZE, SETTINGS_MAX_HEADER_LIST_SIZE | |
3641 * | |
3642 * Only SETTINGS_INITIAL_WINDOW_SIZE seems to be needed in | |
3643 * a simple client. | |
3644 */ | |
3645 | |
3646 if (ctx->setting_id == 0x04) { | |
3647 /* SETTINGS_INITIAL_WINDOW_SIZE */ | |
3648 | |
3649 if (ctx->setting_value > NGX_HTTP_V2_MAX_WINDOW) { | |
3650 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3651 "upstream sent settings frame " | |
3652 "with too large initial window size: %ui", | |
3653 ctx->setting_value); | |
3654 return NGX_ERROR; | |
3655 } | |
3656 | |
3657 window_update = ctx->setting_value | |
3658 - ctx->connection->init_window; | |
3659 ctx->connection->init_window = ctx->setting_value; | |
3660 | |
3661 if (ctx->send_window > 0 | |
3662 && window_update > (ssize_t) NGX_HTTP_V2_MAX_WINDOW | |
3663 - ctx->send_window) | |
3664 { | |
3665 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3666 "upstream sent settings frame " | |
3667 "with too large initial window size: %ui", | |
3668 ctx->setting_value); | |
3669 return NGX_ERROR; | |
3670 } | |
3671 | |
3672 ctx->send_window += window_update; | |
3673 } | |
3674 | |
3675 break; | |
3676 } | |
3677 } | |
3678 | |
3679 ctx->rest -= p - b->pos; | |
3680 ctx->frame_state = state; | |
3681 b->pos = p; | |
3682 | |
3683 if (ctx->rest > 0) { | |
3684 return NGX_AGAIN; | |
3685 } | |
3686 | |
3687 ctx->state = ngx_http_grpc_st_start; | |
3688 | |
3689 return ngx_http_grpc_send_settings_ack(r, ctx); | |
3690 } | |
3691 | |
3692 | |
3693 static ngx_int_t | |
3694 ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
3695 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
3696 { | |
3697 u_char ch, *p, *last; | |
3698 enum { | |
3699 sw_start = 0, | |
3700 sw_data_2, | |
3701 sw_data_3, | |
3702 sw_data_4, | |
3703 sw_data_5, | |
3704 sw_data_6, | |
3705 sw_data_7, | |
3706 sw_data_8 | |
3707 } state; | |
3708 | |
3709 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3710 last = b->last; | |
3711 | |
3712 } else { | |
3713 last = b->pos + ctx->rest; | |
3714 } | |
3715 | |
3716 state = ctx->frame_state; | |
3717 | |
3718 if (state == sw_start) { | |
3719 | |
3720 if (ctx->stream_id) { | |
3721 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3722 "upstream sent ping frame " | |
3723 "with non-zero stream id: %ui", | |
3724 ctx->stream_id); | |
3725 return NGX_ERROR; | |
3726 } | |
3727 | |
3728 if (ctx->rest != 8) { | |
3729 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3730 "upstream sent ping frame " | |
3731 "with invalid length: %uz", | |
3732 ctx->rest); | |
3733 return NGX_ERROR; | |
3734 } | |
3735 | |
3736 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
3737 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3738 "upstream sent ping frame with ack flag"); | |
3739 return NGX_ERROR; | |
3740 } | |
7387
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3741 |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3742 if (ctx->free == NULL && ctx->pings++ > 1000) { |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3743 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3744 "upstream sent too many ping frames"); |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3745 return NGX_ERROR; |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3746 } |
7233 | 3747 } |
3748 | |
3749 for (p = b->pos; p < last; p++) { | |
3750 ch = *p; | |
3751 | |
3752 #if 0 | |
3753 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3754 "grpc ping byte: %02Xd s:%d", ch, state); | |
3755 #endif | |
3756 | |
3757 if (state < sw_data_8) { | |
3758 ctx->ping_data[state] = ch; | |
3759 state++; | |
3760 | |
3761 } else { | |
3762 ctx->ping_data[7] = ch; | |
3763 state = sw_start; | |
3764 | |
3765 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3766 "grpc ping"); | |
3767 } | |
3768 } | |
3769 | |
3770 ctx->rest -= p - b->pos; | |
3771 ctx->frame_state = state; | |
3772 b->pos = p; | |
3773 | |
3774 if (ctx->rest > 0) { | |
3775 return NGX_AGAIN; | |
3776 } | |
3777 | |
3778 ctx->state = ngx_http_grpc_st_start; | |
3779 | |
3780 return ngx_http_grpc_send_ping_ack(r, ctx); | |
3781 } | |
3782 | |
3783 | |
3784 static ngx_int_t | |
3785 ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3786 { | |
3787 ngx_chain_t *cl, **ll; | |
3788 ngx_http_grpc_frame_t *f; | |
3789 | |
3790 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3791 "grpc send settings ack"); | |
3792 | |
3793 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3794 ll = &cl->next; | |
3795 } | |
3796 | |
3797 cl = ngx_http_grpc_get_buf(r, ctx); | |
3798 if (cl == NULL) { | |
3799 return NGX_ERROR; | |
3800 } | |
3801 | |
3802 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3803 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3804 | |
3805 f->length_0 = 0; | |
3806 f->length_1 = 0; | |
3807 f->length_2 = 0; | |
3808 f->type = NGX_HTTP_V2_SETTINGS_FRAME; | |
3809 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
3810 f->stream_id_0 = 0; | |
3811 f->stream_id_1 = 0; | |
3812 f->stream_id_2 = 0; | |
3813 f->stream_id_3 = 0; | |
3814 | |
3815 *ll = cl; | |
3816 | |
3817 return NGX_OK; | |
3818 } | |
3819 | |
3820 | |
3821 static ngx_int_t | |
3822 ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3823 { | |
3824 ngx_chain_t *cl, **ll; | |
3825 ngx_http_grpc_frame_t *f; | |
3826 | |
3827 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3828 "grpc send ping ack"); | |
3829 | |
3830 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3831 ll = &cl->next; | |
3832 } | |
3833 | |
3834 cl = ngx_http_grpc_get_buf(r, ctx); | |
3835 if (cl == NULL) { | |
3836 return NGX_ERROR; | |
3837 } | |
3838 | |
3839 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3840 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3841 | |
3842 f->length_0 = 0; | |
3843 f->length_1 = 0; | |
3844 f->length_2 = 8; | |
3845 f->type = NGX_HTTP_V2_PING_FRAME; | |
3846 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
3847 f->stream_id_0 = 0; | |
3848 f->stream_id_1 = 0; | |
3849 f->stream_id_2 = 0; | |
3850 f->stream_id_3 = 0; | |
3851 | |
3852 cl->buf->last = ngx_copy(cl->buf->last, ctx->ping_data, 8); | |
3853 | |
3854 *ll = cl; | |
3855 | |
3856 return NGX_OK; | |
3857 } | |
3858 | |
3859 | |
3860 static ngx_int_t | |
3861 ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
3862 ngx_http_grpc_ctx_t *ctx) | |
3863 { | |
3864 size_t n; | |
3865 ngx_chain_t *cl, **ll; | |
3866 ngx_http_grpc_frame_t *f; | |
3867 | |
3868 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3869 "grpc send window update: %uz %uz", | |
3870 ctx->connection->recv_window, ctx->recv_window); | |
3871 | |
3872 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3873 ll = &cl->next; | |
3874 } | |
3875 | |
3876 cl = ngx_http_grpc_get_buf(r, ctx); | |
3877 if (cl == NULL) { | |
3878 return NGX_ERROR; | |
3879 } | |
3880 | |
3881 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3882 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3883 | |
3884 f->length_0 = 0; | |
3885 f->length_1 = 0; | |
3886 f->length_2 = 4; | |
3887 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
3888 f->flags = 0; | |
3889 f->stream_id_0 = 0; | |
3890 f->stream_id_1 = 0; | |
3891 f->stream_id_2 = 0; | |
3892 f->stream_id_3 = 0; | |
3893 | |
3894 n = NGX_HTTP_V2_MAX_WINDOW - ctx->connection->recv_window; | |
3895 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3896 | |
3897 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
3898 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
3899 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
3900 *cl->buf->last++ = (u_char) (n & 0xff); | |
3901 | |
3902 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3903 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3904 | |
3905 f->length_0 = 0; | |
3906 f->length_1 = 0; | |
3907 f->length_2 = 4; | |
3908 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
3909 f->flags = 0; | |
3910 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
3911 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
3912 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
3913 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
3914 | |
3915 n = NGX_HTTP_V2_MAX_WINDOW - ctx->recv_window; | |
3916 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3917 | |
3918 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
3919 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
3920 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
3921 *cl->buf->last++ = (u_char) (n & 0xff); | |
3922 | |
3923 *ll = cl; | |
3924 | |
3925 return NGX_OK; | |
3926 } | |
3927 | |
3928 | |
3929 static ngx_chain_t * | |
3930 ngx_http_grpc_get_buf(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3931 { | |
7410
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7406
diff
changeset
|
3932 u_char *start; |
7233 | 3933 ngx_buf_t *b; |
3934 ngx_chain_t *cl; | |
3935 | |
3936 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
3937 if (cl == NULL) { | |
3938 return NULL; | |
3939 } | |
3940 | |
3941 b = cl->buf; | |
7410
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7406
diff
changeset
|
3942 start = b->start; |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7406
diff
changeset
|
3943 |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7406
diff
changeset
|
3944 if (start == NULL) { |
7233 | 3945 |
3946 /* | |
3947 * each buffer is large enough to hold two window update | |
3948 * frames in a row | |
3949 */ | |
3950 | |
7410
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7406
diff
changeset
|
3951 start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8); |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7406
diff
changeset
|
3952 if (start == NULL) { |
7233 | 3953 return NULL; |
3954 } | |
3955 | |
3956 } | |
3957 | |
7410
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3958 ngx_memzero(b, sizeof(ngx_buf_t)); |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3959 |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3960 b->start = start; |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3961 b->pos = start; |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3962 b->last = start; |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3963 b->end = start + 2 * sizeof(ngx_http_grpc_frame_t) + 8; |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3964 |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7406
diff
changeset
|
3965 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
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7406
diff
changeset
|
3966 b->temporary = 1; |
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7406
diff
changeset
|
3967 b->flush = 1; |
9ac0e8b9aced
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7406
diff
changeset
|
3968 |
7233 | 3969 return cl; |
3970 } | |
3971 | |
3972 | |
3973 static ngx_http_grpc_ctx_t * | |
3974 ngx_http_grpc_get_ctx(ngx_http_request_t *r) | |
3975 { | |
3976 ngx_http_grpc_ctx_t *ctx; | |
3977 ngx_http_upstream_t *u; | |
3978 | |
3979 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
3980 | |
3981 if (ctx->connection == NULL) { | |
3982 u = r->upstream; | |
3983 | |
3984 if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) { | |
3985 return NULL; | |
3986 } | |
3987 } | |
3988 | |
3989 return ctx; | |
3990 } | |
3991 | |
3992 | |
3993 static ngx_int_t | |
3994 ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
3995 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc) | |
3996 { | |
3997 ngx_connection_t *c; | |
3998 ngx_pool_cleanup_t *cln; | |
3999 | |
4000 c = pc->connection; | |
4001 | |
4002 if (pc->cached) { | |
4003 | |
4004 /* | |
4005 * for cached connections, connection data can be found | |
4006 * in the cleanup handler | |
4007 */ | |
4008 | |
4009 for (cln = c->pool->cleanup; cln; cln = cln->next) { | |
4010 if (cln->handler == ngx_http_grpc_cleanup) { | |
4011 ctx->connection = cln->data; | |
4012 break; | |
4013 } | |
4014 } | |
4015 | |
4016 if (ctx->connection == NULL) { | |
4017 ngx_log_error(NGX_LOG_ERR, c->log, 0, | |
4018 "no connection data found for " | |
4019 "keepalive http2 connection"); | |
4020 return NGX_ERROR; | |
4021 } | |
4022 | |
4023 ctx->send_window = ctx->connection->init_window; | |
4024 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4025 | |
4026 ctx->connection->last_stream_id += 2; | |
4027 ctx->id = ctx->connection->last_stream_id; | |
4028 | |
4029 return NGX_OK; | |
4030 } | |
4031 | |
4032 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t)); | |
4033 if (cln == NULL) { | |
4034 return NGX_ERROR; | |
4035 } | |
4036 | |
4037 cln->handler = ngx_http_grpc_cleanup; | |
4038 ctx->connection = cln->data; | |
4039 | |
4040 ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4041 ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4042 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4043 | |
4044 ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4045 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4046 | |
4047 ctx->id = 1; | |
4048 ctx->connection->last_stream_id = 1; | |
4049 | |
4050 return NGX_OK; | |
4051 } | |
4052 | |
4053 | |
4054 static void | |
4055 ngx_http_grpc_cleanup(void *data) | |
4056 { | |
4057 #if 0 | |
4058 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
4059 "grpc cleanup"); | |
4060 #endif | |
4061 return; | |
4062 } | |
4063 | |
4064 | |
4065 static void | |
4066 ngx_http_grpc_abort_request(ngx_http_request_t *r) | |
4067 { | |
4068 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
4069 "abort grpc request"); | |
4070 return; | |
4071 } | |
4072 | |
4073 | |
4074 static void | |
4075 ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
4076 { | |
4077 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
4078 "finalize grpc request"); | |
4079 return; | |
4080 } | |
4081 | |
4082 | |
7234
c693daca57f7
gRPC: special handling of the TE request header.
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7233
diff
changeset
|
4083 static ngx_int_t |
c693daca57f7
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parents:
7233
diff
changeset
|
4084 ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r, |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4085 ngx_http_variable_value_t *v, uintptr_t data) |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4086 { |
c693daca57f7
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parents:
7233
diff
changeset
|
4087 ngx_table_elt_t *te; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4088 |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4089 te = r->headers_in.te; |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4090 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4091 if (te == NULL) { |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4092 v->not_found = 1; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4093 return NGX_OK; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4094 } |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4095 |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4096 if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len, |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4097 (u_char *) "trailers", 8 - 1) |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4098 == NULL) |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4099 { |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4100 v->not_found = 1; |
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parents:
7233
diff
changeset
|
4101 return NGX_OK; |
c693daca57f7
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parents:
7233
diff
changeset
|
4102 } |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4103 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4104 v->valid = 1; |
c693daca57f7
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parents:
7233
diff
changeset
|
4105 v->no_cacheable = 0; |
c693daca57f7
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parents:
7233
diff
changeset
|
4106 v->not_found = 0; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4107 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4108 v->data = (u_char *) "trailers"; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4109 v->len = sizeof("trailers") - 1; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
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changeset
|
4110 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4111 return NGX_OK; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4112 } |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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changeset
|
4113 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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changeset
|
4114 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4115 static ngx_int_t |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4116 ngx_http_grpc_add_variables(ngx_conf_t *cf) |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4117 { |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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changeset
|
4118 ngx_http_variable_t *var, *v; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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changeset
|
4119 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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changeset
|
4120 for (v = ngx_http_grpc_vars; v->name.len; v++) { |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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changeset
|
4121 var = ngx_http_add_variable(cf, &v->name, v->flags); |
c693daca57f7
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parents:
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changeset
|
4122 if (var == NULL) { |
c693daca57f7
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parents:
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changeset
|
4123 return NGX_ERROR; |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
4124 } |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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changeset
|
4125 |
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parents:
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|
4126 var->get_handler = v->get_handler; |
c693daca57f7
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parents:
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diff
changeset
|
4127 var->data = v->data; |
c693daca57f7
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parents:
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changeset
|
4128 } |
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parents:
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changeset
|
4129 |
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|
4130 return NGX_OK; |
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parents:
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|
4131 } |
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|
4132 |
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|
4133 |
7233 | 4134 static void * |
4135 ngx_http_grpc_create_loc_conf(ngx_conf_t *cf) | |
4136 { | |
4137 ngx_http_grpc_loc_conf_t *conf; | |
4138 | |
4139 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t)); | |
4140 if (conf == NULL) { | |
4141 return NULL; | |
4142 } | |
4143 | |
4144 /* | |
4145 * set by ngx_pcalloc(): | |
4146 * | |
4147 * conf->upstream.ignore_headers = 0; | |
4148 * conf->upstream.next_upstream = 0; | |
4149 * conf->upstream.hide_headers_hash = { NULL, 0 }; | |
4150 * conf->upstream.ssl_name = NULL; | |
4151 * | |
4152 * conf->headers_source = NULL; | |
4153 * conf->headers.lengths = NULL; | |
4154 * conf->headers.values = NULL; | |
4155 * conf->headers.hash = { NULL, 0 }; | |
4156 * conf->host = { 0, NULL }; | |
4157 * conf->host_set = 0; | |
4158 * conf->ssl = 0; | |
4159 * conf->ssl_protocols = 0; | |
4160 * conf->ssl_ciphers = { 0, NULL }; | |
4161 * conf->ssl_trusted_certificate = { 0, NULL }; | |
4162 * conf->ssl_crl = { 0, NULL }; | |
4163 * conf->ssl_certificate = { 0, NULL }; | |
4164 * conf->ssl_certificate_key = { 0, NULL }; | |
4165 */ | |
4166 | |
4167 conf->upstream.local = NGX_CONF_UNSET_PTR; | |
4168 conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; | |
4169 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
4170 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
4171 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
4172 conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
4173 | |
4174 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
4175 | |
4176 conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; | |
4177 conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; | |
4178 | |
4179 conf->upstream.intercept_errors = NGX_CONF_UNSET; | |
4180 | |
4181 #if (NGX_HTTP_SSL) | |
4182 conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; | |
4183 conf->upstream.ssl_server_name = NGX_CONF_UNSET; | |
4184 conf->upstream.ssl_verify = NGX_CONF_UNSET; | |
4185 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
4186 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
4187 #endif | |
4188 | |
4189 /* the hardcoded values */ | |
4190 conf->upstream.cyclic_temp_file = 0; | |
4191 conf->upstream.buffering = 0; | |
4192 conf->upstream.ignore_client_abort = 0; | |
4193 conf->upstream.send_lowat = 0; | |
4194 conf->upstream.bufs.num = 0; | |
4195 conf->upstream.busy_buffers_size = 0; | |
4196 conf->upstream.max_temp_file_size = 0; | |
4197 conf->upstream.temp_file_write_size = 0; | |
4198 conf->upstream.pass_request_headers = 1; | |
4199 conf->upstream.pass_request_body = 1; | |
4200 conf->upstream.force_ranges = 0; | |
4201 conf->upstream.pass_trailers = 1; | |
4202 conf->upstream.preserve_output = 1; | |
4203 | |
4204 ngx_str_set(&conf->upstream.module, "grpc"); | |
4205 | |
4206 return conf; | |
4207 } | |
4208 | |
4209 | |
4210 static char * | |
4211 ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
4212 { | |
4213 ngx_http_grpc_loc_conf_t *prev = parent; | |
4214 ngx_http_grpc_loc_conf_t *conf = child; | |
4215 | |
4216 ngx_int_t rc; | |
4217 ngx_hash_init_t hash; | |
4218 ngx_http_core_loc_conf_t *clcf; | |
4219 | |
4220 ngx_conf_merge_ptr_value(conf->upstream.local, | |
4221 prev->upstream.local, NULL); | |
4222 | |
4223 ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, | |
4224 prev->upstream.next_upstream_tries, 0); | |
4225 | |
4226 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
4227 prev->upstream.connect_timeout, 60000); | |
4228 | |
4229 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
4230 prev->upstream.send_timeout, 60000); | |
4231 | |
4232 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
4233 prev->upstream.read_timeout, 60000); | |
4234 | |
4235 ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, | |
4236 prev->upstream.next_upstream_timeout, 0); | |
4237 | |
4238 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
4239 prev->upstream.buffer_size, | |
4240 (size_t) ngx_pagesize); | |
4241 | |
4242 ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, | |
4243 prev->upstream.ignore_headers, | |
4244 NGX_CONF_BITMASK_SET); | |
4245 | |
4246 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
4247 prev->upstream.next_upstream, | |
4248 (NGX_CONF_BITMASK_SET | |
4249 |NGX_HTTP_UPSTREAM_FT_ERROR | |
4250 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
4251 | |
4252 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { | |
4253 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
4254 |NGX_HTTP_UPSTREAM_FT_OFF; | |
4255 } | |
4256 | |
4257 ngx_conf_merge_value(conf->upstream.intercept_errors, | |
4258 prev->upstream.intercept_errors, 0); | |
4259 | |
4260 #if (NGX_HTTP_SSL) | |
4261 | |
4262 ngx_conf_merge_value(conf->upstream.ssl_session_reuse, | |
4263 prev->upstream.ssl_session_reuse, 1); | |
4264 | |
4265 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
4266 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 | |
4267 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); | |
4268 | |
4269 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, | |
4270 "DEFAULT"); | |
4271 | |
4272 if (conf->upstream.ssl_name == NULL) { | |
4273 conf->upstream.ssl_name = prev->upstream.ssl_name; | |
4274 } | |
4275 | |
4276 ngx_conf_merge_value(conf->upstream.ssl_server_name, | |
4277 prev->upstream.ssl_server_name, 0); | |
4278 ngx_conf_merge_value(conf->upstream.ssl_verify, | |
4279 prev->upstream.ssl_verify, 0); | |
4280 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
4281 prev->ssl_verify_depth, 1); | |
4282 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
4283 prev->ssl_trusted_certificate, ""); | |
4284 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
4285 | |
4286 ngx_conf_merge_str_value(conf->ssl_certificate, | |
4287 prev->ssl_certificate, ""); | |
4288 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
4289 prev->ssl_certificate_key, ""); | |
4290 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
4291 | |
4292 if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) { | |
4293 return NGX_CONF_ERROR; | |
4294 } | |
4295 | |
4296 #endif | |
4297 | |
4298 hash.max_size = 512; | |
4299 hash.bucket_size = ngx_align(64, ngx_cacheline_size); | |
4300 hash.name = "grpc_headers_hash"; | |
4301 | |
4302 if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, | |
4303 &prev->upstream, ngx_http_grpc_hide_headers, &hash) | |
4304 != NGX_OK) | |
4305 { | |
4306 return NGX_CONF_ERROR; | |
4307 } | |
4308 | |
4309 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
4310 | |
4311 if (clcf->noname && conf->upstream.upstream == NULL) { | |
4312 conf->upstream.upstream = prev->upstream.upstream; | |
4313 conf->host = prev->host; | |
4314 #if (NGX_HTTP_SSL) | |
4315 conf->upstream.ssl = prev->upstream.ssl; | |
4316 #endif | |
4317 } | |
4318 | |
4319 if (clcf->lmt_excpt && clcf->handler == NULL && conf->upstream.upstream) { | |
4320 clcf->handler = ngx_http_grpc_handler; | |
4321 } | |
4322 | |
4323 if (conf->headers_source == NULL) { | |
4324 conf->headers = prev->headers; | |
4325 conf->headers_source = prev->headers_source; | |
4326 conf->host_set = prev->host_set; | |
4327 } | |
4328 | |
4329 rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers, | |
4330 ngx_http_grpc_headers); | |
4331 if (rc != NGX_OK) { | |
4332 return NGX_CONF_ERROR; | |
4333 } | |
4334 | |
4335 /* | |
4336 * special handling to preserve conf->headers in the "http" section | |
4337 * to inherit it to all servers | |
4338 */ | |
4339 | |
4340 if (prev->headers.hash.buckets == NULL | |
4341 && conf->headers_source == prev->headers_source) | |
4342 { | |
4343 prev->headers = conf->headers; | |
4344 prev->host_set = conf->host_set; | |
4345 } | |
4346 | |
4347 return NGX_CONF_OK; | |
4348 } | |
4349 | |
4350 | |
4351 static ngx_int_t | |
4352 ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf, | |
4353 ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers) | |
4354 { | |
4355 u_char *p; | |
4356 size_t size; | |
4357 uintptr_t *code; | |
4358 ngx_uint_t i; | |
4359 ngx_array_t headers_names, headers_merged; | |
4360 ngx_keyval_t *src, *s, *h; | |
4361 ngx_hash_key_t *hk; | |
4362 ngx_hash_init_t hash; | |
4363 ngx_http_script_compile_t sc; | |
4364 ngx_http_script_copy_code_t *copy; | |
4365 | |
4366 if (headers->hash.buckets) { | |
4367 return NGX_OK; | |
4368 } | |
4369 | |
4370 if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) | |
4371 != NGX_OK) | |
4372 { | |
4373 return NGX_ERROR; | |
4374 } | |
4375 | |
4376 if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) | |
4377 != NGX_OK) | |
4378 { | |
4379 return NGX_ERROR; | |
4380 } | |
4381 | |
4382 headers->lengths = ngx_array_create(cf->pool, 64, 1); | |
4383 if (headers->lengths == NULL) { | |
4384 return NGX_ERROR; | |
4385 } | |
4386 | |
4387 headers->values = ngx_array_create(cf->pool, 512, 1); | |
4388 if (headers->values == NULL) { | |
4389 return NGX_ERROR; | |
4390 } | |
4391 | |
4392 if (conf->headers_source) { | |
4393 | |
4394 src = conf->headers_source->elts; | |
4395 for (i = 0; i < conf->headers_source->nelts; i++) { | |
4396 | |
4397 if (src[i].key.len == 4 | |
4398 && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0) | |
4399 { | |
4400 conf->host_set = 1; | |
4401 } | |
4402 | |
4403 s = ngx_array_push(&headers_merged); | |
4404 if (s == NULL) { | |
4405 return NGX_ERROR; | |
4406 } | |
4407 | |
4408 *s = src[i]; | |
4409 } | |
4410 } | |
4411 | |
4412 h = default_headers; | |
4413 | |
4414 while (h->key.len) { | |
4415 | |
4416 src = headers_merged.elts; | |
4417 for (i = 0; i < headers_merged.nelts; i++) { | |
4418 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { | |
4419 goto next; | |
4420 } | |
4421 } | |
4422 | |
4423 s = ngx_array_push(&headers_merged); | |
4424 if (s == NULL) { | |
4425 return NGX_ERROR; | |
4426 } | |
4427 | |
4428 *s = *h; | |
4429 | |
4430 next: | |
4431 | |
4432 h++; | |
4433 } | |
4434 | |
4435 | |
4436 src = headers_merged.elts; | |
4437 for (i = 0; i < headers_merged.nelts; i++) { | |
4438 | |
4439 hk = ngx_array_push(&headers_names); | |
4440 if (hk == NULL) { | |
4441 return NGX_ERROR; | |
4442 } | |
4443 | |
4444 hk->key = src[i].key; | |
4445 hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); | |
4446 hk->value = (void *) 1; | |
4447 | |
4448 if (src[i].value.len == 0) { | |
4449 continue; | |
4450 } | |
4451 | |
4452 copy = ngx_array_push_n(headers->lengths, | |
4453 sizeof(ngx_http_script_copy_code_t)); | |
4454 if (copy == NULL) { | |
4455 return NGX_ERROR; | |
4456 } | |
4457 | |
7406
ed5b3c4c1284
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7387
diff
changeset
|
4458 copy->code = (ngx_http_script_code_pt) (void *) |
ed5b3c4c1284
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7387
diff
changeset
|
4459 ngx_http_script_copy_len_code; |
7233 | 4460 copy->len = src[i].key.len; |
4461 | |
4462 size = (sizeof(ngx_http_script_copy_code_t) | |
4463 + src[i].key.len + sizeof(uintptr_t) - 1) | |
4464 & ~(sizeof(uintptr_t) - 1); | |
4465 | |
4466 copy = ngx_array_push_n(headers->values, size); | |
4467 if (copy == NULL) { | |
4468 return NGX_ERROR; | |
4469 } | |
4470 | |
4471 copy->code = ngx_http_script_copy_code; | |
4472 copy->len = src[i].key.len; | |
4473 | |
4474 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); | |
4475 ngx_memcpy(p, src[i].key.data, src[i].key.len); | |
4476 | |
4477 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
4478 | |
4479 sc.cf = cf; | |
4480 sc.source = &src[i].value; | |
4481 sc.flushes = &headers->flushes; | |
4482 sc.lengths = &headers->lengths; | |
4483 sc.values = &headers->values; | |
4484 | |
4485 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
4486 return NGX_ERROR; | |
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 code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); | |
4497 if (code == NULL) { | |
4498 return NGX_ERROR; | |
4499 } | |
4500 | |
4501 *code = (uintptr_t) NULL; | |
4502 } | |
4503 | |
4504 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
4505 if (code == NULL) { | |
4506 return NGX_ERROR; | |
4507 } | |
4508 | |
4509 *code = (uintptr_t) NULL; | |
4510 | |
4511 | |
4512 hash.hash = &headers->hash; | |
4513 hash.key = ngx_hash_key_lc; | |
4514 hash.max_size = 512; | |
4515 hash.bucket_size = 64; | |
4516 hash.name = "grpc_headers_hash"; | |
4517 hash.pool = cf->pool; | |
4518 hash.temp_pool = NULL; | |
4519 | |
4520 return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); | |
4521 } | |
4522 | |
4523 | |
4524 static char * | |
4525 ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
4526 { | |
4527 ngx_http_grpc_loc_conf_t *glcf = conf; | |
4528 | |
4529 size_t add; | |
4530 ngx_str_t *value, *url; | |
4531 ngx_url_t u; | |
4532 ngx_http_core_loc_conf_t *clcf; | |
4533 | |
4534 if (glcf->upstream.upstream) { | |
4535 return "is duplicate"; | |
4536 } | |
4537 | |
4538 value = cf->args->elts; | |
4539 url = &value[1]; | |
4540 | |
4541 if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) { | |
4542 add = 7; | |
4543 | |
4544 } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) { | |
4545 | |
4546 #if (NGX_HTTP_SSL) | |
4547 glcf->ssl = 1; | |
4548 | |
4549 add = 8; | |
4550 #else | |
4551 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
4552 "grpcs protocol requires SSL support"); | |
4553 return NGX_CONF_ERROR; | |
4554 #endif | |
4555 | |
4556 } else { | |
4557 add = 0; | |
4558 } | |
4559 | |
4560 ngx_memzero(&u, sizeof(ngx_url_t)); | |
4561 | |
4562 u.url.len = url->len - add; | |
4563 u.url.data = url->data + add; | |
4564 u.no_resolve = 1; | |
4565 | |
4566 glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); | |
4567 if (glcf->upstream.upstream == NULL) { | |
4568 return NGX_CONF_ERROR; | |
4569 } | |
4570 | |
4571 if (u.family != AF_UNIX) { | |
4572 | |
4573 if (u.no_port) { | |
4574 glcf->host = u.host; | |
4575 | |
4576 } else { | |
4577 glcf->host.len = u.host.len + 1 + u.port_text.len; | |
4578 glcf->host.data = u.host.data; | |
4579 } | |
4580 | |
4581 } else { | |
4582 ngx_str_set(&glcf->host, "localhost"); | |
4583 } | |
4584 | |
4585 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
4586 | |
4587 clcf->handler = ngx_http_grpc_handler; | |
4588 | |
4589 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
4590 clcf->auto_redirect = 1; | |
4591 } | |
4592 | |
4593 return NGX_CONF_OK; | |
4594 } | |
4595 | |
4596 | |
4597 #if (NGX_HTTP_SSL) | |
4598 | |
4599 static char * | |
4600 ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
4601 { | |
4602 ngx_http_grpc_loc_conf_t *glcf = conf; | |
4603 | |
4604 ngx_str_t *value; | |
4605 | |
4606 if (glcf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
4607 return "is duplicate"; | |
4608 } | |
4609 | |
4610 value = cf->args->elts; | |
4611 | |
4612 glcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
4613 | |
4614 if (glcf->ssl_passwords == NULL) { | |
4615 return NGX_CONF_ERROR; | |
4616 } | |
4617 | |
4618 return NGX_CONF_OK; | |
4619 } | |
4620 | |
4621 | |
4622 static ngx_int_t | |
4623 ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf) | |
4624 { | |
4625 ngx_pool_cleanup_t *cln; | |
4626 | |
4627 glcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
4628 if (glcf->upstream.ssl == NULL) { | |
4629 return NGX_ERROR; | |
4630 } | |
4631 | |
4632 glcf->upstream.ssl->log = cf->log; | |
4633 | |
4634 if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL) | |
4635 != NGX_OK) | |
4636 { | |
4637 return NGX_ERROR; | |
4638 } | |
4639 | |
4640 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
4641 if (cln == NULL) { | |
4642 return NGX_ERROR; | |
4643 } | |
4644 | |
4645 cln->handler = ngx_ssl_cleanup_ctx; | |
4646 cln->data = glcf->upstream.ssl; | |
4647 | |
4648 if (glcf->ssl_certificate.len) { | |
4649 | |
4650 if (glcf->ssl_certificate_key.len == 0) { | |
4651 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
4652 "no \"grpc_ssl_certificate_key\" is defined " | |
4653 "for certificate \"%V\"", &glcf->ssl_certificate); | |
4654 return NGX_ERROR; | |
4655 } | |
4656 | |
4657 if (ngx_ssl_certificate(cf, glcf->upstream.ssl, &glcf->ssl_certificate, | |
4658 &glcf->ssl_certificate_key, glcf->ssl_passwords) | |
4659 != NGX_OK) | |
4660 { | |
4661 return NGX_ERROR; | |
4662 } | |
4663 } | |
4664 | |
4665 if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0) | |
4666 != NGX_OK) | |
4667 { | |
4668 return NGX_ERROR; | |
4669 } | |
4670 | |
4671 if (glcf->upstream.ssl_verify) { | |
4672 if (glcf->ssl_trusted_certificate.len == 0) { | |
4673 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
4674 "no grpc_ssl_trusted_certificate for grpc_ssl_verify"); | |
4675 return NGX_ERROR; | |
4676 } | |
4677 | |
4678 if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl, | |
4679 &glcf->ssl_trusted_certificate, | |
4680 glcf->ssl_verify_depth) | |
4681 != NGX_OK) | |
4682 { | |
4683 return NGX_ERROR; | |
4684 } | |
4685 | |
4686 if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) { | |
4687 return NGX_ERROR; | |
4688 } | |
4689 } | |
4690 | |
4691 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation | |
4692 | |
4693 if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx, | |
4694 (u_char *) "\x02h2", 3) | |
4695 != 0) | |
4696 { | |
4697 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
4698 "SSL_CTX_set_alpn_protos() failed"); | |
4699 return NGX_ERROR; | |
4700 } | |
4701 | |
4702 #endif | |
4703 | |
4704 return NGX_OK; | |
4705 } | |
4706 | |
4707 #endif |