Mercurial > hg > nginx
annotate src/http/modules/ngx_http_grpc_module.c @ 7406:ed5b3c4c1284 stable-1.14
Silenced -Wcast-function-type warnings (closes #1546).
Cast to intermediate "void *" to lose compiler knowledge about the original
type and pass the warning. This is not a real fix but rather a workaround.
Found by gcc8.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Mon, 07 May 2018 09:54:37 +0000 |
parents | 6afba58cd5a3 |
children | 9ac0e8b9aced |
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
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81 ngx_uint_t pings; |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
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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; | |
115 unsigned parsing_headers:1; | |
116 unsigned end_stream:1; | |
117 unsigned status:1; | |
118 | |
119 ngx_http_request_t *request; | |
120 } ngx_http_grpc_ctx_t; | |
121 | |
122 | |
123 typedef struct { | |
124 u_char length_0; | |
125 u_char length_1; | |
126 u_char length_2; | |
127 u_char type; | |
128 u_char flags; | |
129 u_char stream_id_0; | |
130 u_char stream_id_1; | |
131 u_char stream_id_2; | |
132 u_char stream_id_3; | |
133 } ngx_http_grpc_frame_t; | |
134 | |
135 | |
136 static ngx_int_t ngx_http_grpc_create_request(ngx_http_request_t *r); | |
137 static ngx_int_t ngx_http_grpc_reinit_request(ngx_http_request_t *r); | |
138 static ngx_int_t ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in); | |
139 static ngx_int_t ngx_http_grpc_process_header(ngx_http_request_t *r); | |
140 static ngx_int_t ngx_http_grpc_filter_init(void *data); | |
141 static ngx_int_t ngx_http_grpc_filter(void *data, ssize_t bytes); | |
142 | |
143 static ngx_int_t ngx_http_grpc_parse_frame(ngx_http_request_t *r, | |
144 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
145 static ngx_int_t ngx_http_grpc_parse_header(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_fragment(ngx_http_request_t *r, | |
148 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
149 static ngx_int_t ngx_http_grpc_validate_header_name(ngx_http_request_t *r, | |
150 ngx_str_t *s); | |
151 static ngx_int_t ngx_http_grpc_validate_header_value(ngx_http_request_t *r, | |
152 ngx_str_t *s); | |
153 static ngx_int_t ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, | |
154 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
155 static ngx_int_t ngx_http_grpc_parse_goaway(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_window_update(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_settings(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_ping(ngx_http_request_t *r, | |
162 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
163 | |
164 static ngx_int_t ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, | |
165 ngx_http_grpc_ctx_t *ctx); | |
166 static ngx_int_t ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, | |
167 ngx_http_grpc_ctx_t *ctx); | |
168 static ngx_int_t ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
169 ngx_http_grpc_ctx_t *ctx); | |
170 | |
171 static ngx_chain_t *ngx_http_grpc_get_buf(ngx_http_request_t *r, | |
172 ngx_http_grpc_ctx_t *ctx); | |
173 static ngx_http_grpc_ctx_t *ngx_http_grpc_get_ctx(ngx_http_request_t *r); | |
174 static ngx_int_t ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
175 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc); | |
176 static void ngx_http_grpc_cleanup(void *data); | |
177 | |
178 static void ngx_http_grpc_abort_request(ngx_http_request_t *r); | |
179 static void ngx_http_grpc_finalize_request(ngx_http_request_t *r, | |
180 ngx_int_t rc); | |
181 | |
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gRPC: special handling of the TE request header.
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182 static ngx_int_t ngx_http_grpc_internal_trailers_variable( |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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183 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
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184 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
185 static ngx_int_t ngx_http_grpc_add_variables(ngx_conf_t *cf); |
7233 | 186 static void *ngx_http_grpc_create_loc_conf(ngx_conf_t *cf); |
187 static char *ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, | |
188 void *parent, void *child); | |
189 static ngx_int_t ngx_http_grpc_init_headers(ngx_conf_t *cf, | |
190 ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_headers_t *headers, | |
191 ngx_keyval_t *default_headers); | |
192 | |
193 static char *ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
194 void *conf); | |
195 | |
196 #if (NGX_HTTP_SSL) | |
197 static char *ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, | |
198 ngx_command_t *cmd, void *conf); | |
199 static ngx_int_t ngx_http_grpc_set_ssl(ngx_conf_t *cf, | |
200 ngx_http_grpc_loc_conf_t *glcf); | |
201 #endif | |
202 | |
203 | |
204 static ngx_conf_bitmask_t ngx_http_grpc_next_upstream_masks[] = { | |
205 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
206 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
207 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
208 { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT }, | |
209 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, | |
210 { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 }, | |
211 { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, | |
212 { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 }, | |
213 { ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 }, | |
214 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
215 { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 }, | |
216 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, | |
217 { ngx_null_string, 0 } | |
218 }; | |
219 | |
220 | |
221 #if (NGX_HTTP_SSL) | |
222 | |
223 static ngx_conf_bitmask_t ngx_http_grpc_ssl_protocols[] = { | |
224 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
225 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
226 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
227 { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, | |
228 { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, | |
229 { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, | |
230 { ngx_null_string, 0 } | |
231 }; | |
232 | |
233 #endif | |
234 | |
235 | |
236 static ngx_command_t ngx_http_grpc_commands[] = { | |
237 | |
238 { ngx_string("grpc_pass"), | |
239 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
240 ngx_http_grpc_pass, | |
241 NGX_HTTP_LOC_CONF_OFFSET, | |
242 0, | |
243 NULL }, | |
244 | |
245 { ngx_string("grpc_bind"), | |
246 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, | |
247 ngx_http_upstream_bind_set_slot, | |
248 NGX_HTTP_LOC_CONF_OFFSET, | |
249 offsetof(ngx_http_grpc_loc_conf_t, upstream.local), | |
250 NULL }, | |
251 | |
252 { ngx_string("grpc_connect_timeout"), | |
253 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
254 ngx_conf_set_msec_slot, | |
255 NGX_HTTP_LOC_CONF_OFFSET, | |
256 offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout), | |
257 NULL }, | |
258 | |
259 { ngx_string("grpc_send_timeout"), | |
260 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
261 ngx_conf_set_msec_slot, | |
262 NGX_HTTP_LOC_CONF_OFFSET, | |
263 offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout), | |
264 NULL }, | |
265 | |
266 { ngx_string("grpc_intercept_errors"), | |
267 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
268 ngx_conf_set_flag_slot, | |
269 NGX_HTTP_LOC_CONF_OFFSET, | |
270 offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors), | |
271 NULL }, | |
272 | |
273 { ngx_string("grpc_buffer_size"), | |
274 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
275 ngx_conf_set_size_slot, | |
276 NGX_HTTP_LOC_CONF_OFFSET, | |
277 offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size), | |
278 NULL }, | |
279 | |
280 { ngx_string("grpc_read_timeout"), | |
281 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
282 ngx_conf_set_msec_slot, | |
283 NGX_HTTP_LOC_CONF_OFFSET, | |
284 offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout), | |
285 NULL }, | |
286 | |
287 { ngx_string("grpc_next_upstream"), | |
288 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
289 ngx_conf_set_bitmask_slot, | |
290 NGX_HTTP_LOC_CONF_OFFSET, | |
291 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream), | |
292 &ngx_http_grpc_next_upstream_masks }, | |
293 | |
294 { ngx_string("grpc_next_upstream_tries"), | |
295 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
296 ngx_conf_set_num_slot, | |
297 NGX_HTTP_LOC_CONF_OFFSET, | |
298 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries), | |
299 NULL }, | |
300 | |
301 { ngx_string("grpc_next_upstream_timeout"), | |
302 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
303 ngx_conf_set_msec_slot, | |
304 NGX_HTTP_LOC_CONF_OFFSET, | |
305 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout), | |
306 NULL }, | |
307 | |
308 { ngx_string("grpc_set_header"), | |
309 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
310 ngx_conf_set_keyval_slot, | |
311 NGX_HTTP_LOC_CONF_OFFSET, | |
312 offsetof(ngx_http_grpc_loc_conf_t, headers_source), | |
313 NULL }, | |
314 | |
315 { ngx_string("grpc_pass_header"), | |
316 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
317 ngx_conf_set_str_array_slot, | |
318 NGX_HTTP_LOC_CONF_OFFSET, | |
319 offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers), | |
320 NULL }, | |
321 | |
322 { ngx_string("grpc_hide_header"), | |
323 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
324 ngx_conf_set_str_array_slot, | |
325 NGX_HTTP_LOC_CONF_OFFSET, | |
326 offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers), | |
327 NULL }, | |
328 | |
329 { ngx_string("grpc_ignore_headers"), | |
330 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
331 ngx_conf_set_bitmask_slot, | |
332 NGX_HTTP_LOC_CONF_OFFSET, | |
333 offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers), | |
334 &ngx_http_upstream_ignore_headers_masks }, | |
335 | |
336 #if (NGX_HTTP_SSL) | |
337 | |
338 { ngx_string("grpc_ssl_session_reuse"), | |
339 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
340 ngx_conf_set_flag_slot, | |
341 NGX_HTTP_LOC_CONF_OFFSET, | |
342 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse), | |
343 NULL }, | |
344 | |
345 { ngx_string("grpc_ssl_protocols"), | |
346 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
347 ngx_conf_set_bitmask_slot, | |
348 NGX_HTTP_LOC_CONF_OFFSET, | |
349 offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols), | |
350 &ngx_http_grpc_ssl_protocols }, | |
351 | |
352 { ngx_string("grpc_ssl_ciphers"), | |
353 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
354 ngx_conf_set_str_slot, | |
355 NGX_HTTP_LOC_CONF_OFFSET, | |
356 offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers), | |
357 NULL }, | |
358 | |
359 { ngx_string("grpc_ssl_name"), | |
360 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
361 ngx_http_set_complex_value_slot, | |
362 NGX_HTTP_LOC_CONF_OFFSET, | |
363 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name), | |
364 NULL }, | |
365 | |
366 { ngx_string("grpc_ssl_server_name"), | |
367 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
368 ngx_conf_set_flag_slot, | |
369 NGX_HTTP_LOC_CONF_OFFSET, | |
370 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name), | |
371 NULL }, | |
372 | |
373 { ngx_string("grpc_ssl_verify"), | |
374 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
375 ngx_conf_set_flag_slot, | |
376 NGX_HTTP_LOC_CONF_OFFSET, | |
377 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify), | |
378 NULL }, | |
379 | |
380 { ngx_string("grpc_ssl_verify_depth"), | |
381 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
382 ngx_conf_set_num_slot, | |
383 NGX_HTTP_LOC_CONF_OFFSET, | |
384 offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth), | |
385 NULL }, | |
386 | |
387 { ngx_string("grpc_ssl_trusted_certificate"), | |
388 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
389 ngx_conf_set_str_slot, | |
390 NGX_HTTP_LOC_CONF_OFFSET, | |
391 offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate), | |
392 NULL }, | |
393 | |
394 { ngx_string("grpc_ssl_crl"), | |
395 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
396 ngx_conf_set_str_slot, | |
397 NGX_HTTP_LOC_CONF_OFFSET, | |
398 offsetof(ngx_http_grpc_loc_conf_t, ssl_crl), | |
399 NULL }, | |
400 | |
401 { ngx_string("grpc_ssl_certificate"), | |
402 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
403 ngx_conf_set_str_slot, | |
404 NGX_HTTP_LOC_CONF_OFFSET, | |
405 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate), | |
406 NULL }, | |
407 | |
408 { ngx_string("grpc_ssl_certificate_key"), | |
409 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
410 ngx_conf_set_str_slot, | |
411 NGX_HTTP_LOC_CONF_OFFSET, | |
412 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate_key), | |
413 NULL }, | |
414 | |
415 { ngx_string("grpc_ssl_password_file"), | |
416 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
417 ngx_http_grpc_ssl_password_file, | |
418 NGX_HTTP_LOC_CONF_OFFSET, | |
419 0, | |
420 NULL }, | |
421 | |
422 #endif | |
423 | |
424 ngx_null_command | |
425 }; | |
426 | |
427 | |
428 static ngx_http_module_t ngx_http_grpc_module_ctx = { | |
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429 ngx_http_grpc_add_variables, /* preconfiguration */ |
7233 | 430 NULL, /* postconfiguration */ |
431 | |
432 NULL, /* create main configuration */ | |
433 NULL, /* init main configuration */ | |
434 | |
435 NULL, /* create server configuration */ | |
436 NULL, /* merge server configuration */ | |
437 | |
438 ngx_http_grpc_create_loc_conf, /* create location configuration */ | |
439 ngx_http_grpc_merge_loc_conf /* merge location configuration */ | |
440 }; | |
441 | |
442 | |
443 ngx_module_t ngx_http_grpc_module = { | |
444 NGX_MODULE_V1, | |
445 &ngx_http_grpc_module_ctx, /* module context */ | |
446 ngx_http_grpc_commands, /* module directives */ | |
447 NGX_HTTP_MODULE, /* module type */ | |
448 NULL, /* init master */ | |
449 NULL, /* init module */ | |
450 NULL, /* init process */ | |
451 NULL, /* init thread */ | |
452 NULL, /* exit thread */ | |
453 NULL, /* exit process */ | |
454 NULL, /* exit master */ | |
455 NGX_MODULE_V1_PADDING | |
456 }; | |
457 | |
458 | |
459 static u_char ngx_http_grpc_connection_start[] = | |
460 "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* connection preface */ | |
461 | |
462 "\x00\x00\x12\x04\x00\x00\x00\x00\x00" /* settings frame */ | |
463 "\x00\x01\x00\x00\x00\x00" /* header table size */ | |
464 "\x00\x02\x00\x00\x00\x00" /* disable push */ | |
465 "\x00\x04\x7f\xff\xff\xff" /* initial window */ | |
466 | |
467 "\x00\x00\x04\x08\x00\x00\x00\x00\x00" /* window update frame */ | |
468 "\x7f\xff\x00\x00"; | |
469 | |
470 | |
471 static ngx_keyval_t ngx_http_grpc_headers[] = { | |
472 { ngx_string("Content-Length"), ngx_string("$content_length") }, | |
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473 { ngx_string("TE"), ngx_string("$grpc_internal_trailers") }, |
7233 | 474 { ngx_string("Host"), ngx_string("") }, |
475 { ngx_string("Connection"), ngx_string("") }, | |
476 { ngx_string("Transfer-Encoding"), ngx_string("") }, | |
477 { ngx_string("Keep-Alive"), ngx_string("") }, | |
478 { ngx_string("Expect"), ngx_string("") }, | |
479 { ngx_string("Upgrade"), ngx_string("") }, | |
480 { ngx_null_string, ngx_null_string } | |
481 }; | |
482 | |
483 | |
484 static ngx_str_t ngx_http_grpc_hide_headers[] = { | |
485 ngx_string("Date"), | |
486 ngx_string("Server"), | |
487 ngx_string("X-Accel-Expires"), | |
488 ngx_string("X-Accel-Redirect"), | |
489 ngx_string("X-Accel-Limit-Rate"), | |
490 ngx_string("X-Accel-Buffering"), | |
491 ngx_string("X-Accel-Charset"), | |
492 ngx_null_string | |
493 }; | |
494 | |
495 | |
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496 static ngx_http_variable_t ngx_http_grpc_vars[] = { |
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497 |
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498 { ngx_string("grpc_internal_trailers"), NULL, |
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499 ngx_http_grpc_internal_trailers_variable, 0, |
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500 NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
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501 |
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502 ngx_http_null_variable |
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503 }; |
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504 |
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505 |
7233 | 506 static ngx_int_t |
507 ngx_http_grpc_handler(ngx_http_request_t *r) | |
508 { | |
509 ngx_int_t rc; | |
510 ngx_http_upstream_t *u; | |
511 ngx_http_grpc_ctx_t *ctx; | |
512 ngx_http_grpc_loc_conf_t *glcf; | |
513 | |
514 if (ngx_http_upstream_create(r) != NGX_OK) { | |
515 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
516 } | |
517 | |
518 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
519 | |
520 u = r->upstream; | |
521 | |
522 #if (NGX_HTTP_SSL) | |
523 u->ssl = (glcf->upstream.ssl != NULL); | |
524 | |
525 if (u->ssl) { | |
526 ngx_str_set(&u->schema, "grpcs://"); | |
527 | |
528 } else { | |
529 ngx_str_set(&u->schema, "grpc://"); | |
530 } | |
531 #else | |
532 ngx_str_set(&u->schema, "grpc://"); | |
533 #endif | |
534 | |
535 u->output.tag = (ngx_buf_tag_t) &ngx_http_grpc_module; | |
536 | |
537 u->conf = &glcf->upstream; | |
538 | |
539 u->create_request = ngx_http_grpc_create_request; | |
540 u->reinit_request = ngx_http_grpc_reinit_request; | |
541 u->process_header = ngx_http_grpc_process_header; | |
542 u->abort_request = ngx_http_grpc_abort_request; | |
543 u->finalize_request = ngx_http_grpc_finalize_request; | |
544 | |
545 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_grpc_ctx_t)); | |
546 if (ctx == NULL) { | |
547 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
548 } | |
549 | |
550 ctx->request = r; | |
551 | |
552 ngx_http_set_ctx(r, ctx, ngx_http_grpc_module); | |
553 | |
554 u->input_filter_init = ngx_http_grpc_filter_init; | |
555 u->input_filter = ngx_http_grpc_filter; | |
556 u->input_filter_ctx = ctx; | |
557 | |
558 r->request_body_no_buffering = 1; | |
559 | |
560 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init); | |
561 | |
562 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { | |
563 return rc; | |
564 } | |
565 | |
566 return NGX_DONE; | |
567 } | |
568 | |
569 | |
570 static ngx_int_t | |
571 ngx_http_grpc_create_request(ngx_http_request_t *r) | |
572 { | |
573 u_char *p, *tmp, *key_tmp, *val_tmp, *headers_frame; | |
574 size_t len, tmp_len, key_len, val_len, uri_len; | |
575 uintptr_t escape; | |
576 ngx_buf_t *b; | |
577 ngx_uint_t i, next; | |
578 ngx_chain_t *cl, *body; | |
579 ngx_list_part_t *part; | |
580 ngx_table_elt_t *header; | |
581 ngx_http_upstream_t *u; | |
582 ngx_http_grpc_frame_t *f; | |
583 ngx_http_script_code_pt code; | |
584 ngx_http_grpc_loc_conf_t *glcf; | |
585 ngx_http_script_engine_t e, le; | |
586 ngx_http_script_len_code_pt lcode; | |
587 | |
588 u = r->upstream; | |
589 | |
590 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
591 | |
592 len = sizeof(ngx_http_grpc_connection_start) - 1 | |
593 + sizeof(ngx_http_grpc_frame_t); /* headers frame */ | |
594 | |
595 /* :method header */ | |
596 | |
597 if (r->method == NGX_HTTP_GET || r->method == NGX_HTTP_POST) { | |
598 len += 1; | |
599 tmp_len = 0; | |
600 | |
601 } else { | |
602 len += 1 + NGX_HTTP_V2_INT_OCTETS + r->method_name.len; | |
603 tmp_len = r->method_name.len; | |
604 } | |
605 | |
606 /* :scheme header */ | |
607 | |
608 len += 1; | |
609 | |
610 /* :path header */ | |
611 | |
612 if (r->valid_unparsed_uri) { | |
613 escape = 0; | |
614 uri_len = r->unparsed_uri.len; | |
615 | |
616 } else { | |
617 escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
618 NGX_ESCAPE_URI); | |
619 uri_len = r->uri.len + escape + sizeof("?") - 1 + r->args.len; | |
620 } | |
621 | |
622 len += 1 + NGX_HTTP_V2_INT_OCTETS + uri_len; | |
623 | |
624 if (tmp_len < uri_len) { | |
625 tmp_len = uri_len; | |
626 } | |
627 | |
628 /* :authority header */ | |
629 | |
630 if (!glcf->host_set) { | |
631 len += 1 + NGX_HTTP_V2_INT_OCTETS + glcf->host.len; | |
632 | |
633 if (tmp_len < glcf->host.len) { | |
634 tmp_len = glcf->host.len; | |
635 } | |
636 } | |
637 | |
638 /* other headers */ | |
639 | |
640 ngx_http_script_flush_no_cacheable_variables(r, glcf->headers.flushes); | |
641 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
642 | |
643 le.ip = glcf->headers.lengths->elts; | |
644 le.request = r; | |
645 le.flushed = 1; | |
646 | |
647 while (*(uintptr_t *) le.ip) { | |
648 | |
649 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
650 key_len = lcode(&le); | |
651 | |
652 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
653 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
654 } | |
655 le.ip += sizeof(uintptr_t); | |
656 | |
657 if (val_len == 0) { | |
658 continue; | |
659 } | |
660 | |
661 len += 1 + NGX_HTTP_V2_INT_OCTETS + key_len | |
662 + NGX_HTTP_V2_INT_OCTETS + val_len; | |
663 | |
664 if (tmp_len < key_len) { | |
665 tmp_len = key_len; | |
666 } | |
667 | |
668 if (tmp_len < val_len) { | |
669 tmp_len = val_len; | |
670 } | |
671 } | |
672 | |
673 if (glcf->upstream.pass_request_headers) { | |
674 part = &r->headers_in.headers.part; | |
675 header = part->elts; | |
676 | |
677 for (i = 0; /* void */; i++) { | |
678 | |
679 if (i >= part->nelts) { | |
680 if (part->next == NULL) { | |
681 break; | |
682 } | |
683 | |
684 part = part->next; | |
685 header = part->elts; | |
686 i = 0; | |
687 } | |
688 | |
689 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
690 header[i].lowcase_key, header[i].key.len)) | |
691 { | |
692 continue; | |
693 } | |
694 | |
695 len += 1 + NGX_HTTP_V2_INT_OCTETS + header[i].key.len | |
696 + NGX_HTTP_V2_INT_OCTETS + header[i].value.len; | |
697 | |
698 if (tmp_len < header[i].key.len) { | |
699 tmp_len = header[i].key.len; | |
700 } | |
701 | |
702 if (tmp_len < header[i].value.len) { | |
703 tmp_len = header[i].value.len; | |
704 } | |
705 } | |
706 } | |
707 | |
708 /* continuation frames */ | |
709 | |
710 len += sizeof(ngx_http_grpc_frame_t) | |
711 * (len / NGX_HTTP_V2_DEFAULT_FRAME_SIZE); | |
712 | |
713 | |
714 b = ngx_create_temp_buf(r->pool, len); | |
715 if (b == NULL) { | |
716 return NGX_ERROR; | |
717 } | |
718 | |
719 cl = ngx_alloc_chain_link(r->pool); | |
720 if (cl == NULL) { | |
721 return NGX_ERROR; | |
722 } | |
723 | |
724 cl->buf = b; | |
725 cl->next = NULL; | |
726 | |
727 tmp = ngx_palloc(r->pool, tmp_len * 3); | |
728 if (tmp == NULL) { | |
729 return NGX_ERROR; | |
730 } | |
731 | |
732 key_tmp = tmp + tmp_len; | |
733 val_tmp = tmp + 2 * tmp_len; | |
734 | |
735 /* connection preface */ | |
736 | |
737 b->last = ngx_copy(b->last, ngx_http_grpc_connection_start, | |
738 sizeof(ngx_http_grpc_connection_start) - 1); | |
739 | |
740 /* headers frame */ | |
741 | |
742 headers_frame = b->last; | |
743 | |
744 f = (ngx_http_grpc_frame_t *) b->last; | |
745 b->last += sizeof(ngx_http_grpc_frame_t); | |
746 | |
747 f->length_0 = 0; | |
748 f->length_1 = 0; | |
749 f->length_2 = 0; | |
750 f->type = NGX_HTTP_V2_HEADERS_FRAME; | |
751 f->flags = 0; | |
752 f->stream_id_0 = 0; | |
753 f->stream_id_1 = 0; | |
754 f->stream_id_2 = 0; | |
755 f->stream_id_3 = 1; | |
756 | |
757 if (r->method == NGX_HTTP_GET) { | |
758 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_GET_INDEX); | |
759 | |
760 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
761 "grpc header: \":method: GET\""); | |
762 | |
763 } else if (r->method == NGX_HTTP_POST) { | |
764 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_POST_INDEX); | |
765 | |
766 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
767 "grpc header: \":method: POST\""); | |
768 | |
769 } else { | |
770 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_METHOD_INDEX); | |
771 b->last = ngx_http_v2_write_value(b->last, r->method_name.data, | |
772 r->method_name.len, tmp); | |
773 | |
774 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
775 "grpc header: \":method: %V\"", &r->method_name); | |
776 } | |
777 | |
778 #if (NGX_HTTP_SSL) | |
779 if (glcf->ssl) { | |
780 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTPS_INDEX); | |
781 | |
782 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
783 "grpc header: \":scheme: https\""); | |
784 } else | |
785 #endif | |
786 { | |
787 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTP_INDEX); | |
788 | |
789 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
790 "grpc header: \":scheme: http\""); | |
791 } | |
792 | |
793 if (r->valid_unparsed_uri) { | |
794 | |
795 if (r->unparsed_uri.len == 1 && r->unparsed_uri.data[0] == '/') { | |
796 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_PATH_ROOT_INDEX); | |
797 | |
798 } else { | |
799 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
800 b->last = ngx_http_v2_write_value(b->last, r->unparsed_uri.data, | |
801 r->unparsed_uri.len, tmp); | |
802 } | |
803 | |
804 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
805 "grpc header: \":path: %V\"", &r->unparsed_uri); | |
806 | |
807 } else if (escape || r->args.len > 0) { | |
808 p = val_tmp; | |
809 | |
810 if (escape) { | |
811 p = (u_char *) ngx_escape_uri(p, r->uri.data, r->uri.len, | |
812 NGX_ESCAPE_URI); | |
813 | |
814 } else { | |
815 p = ngx_copy(p, r->uri.data, r->uri.len); | |
816 } | |
817 | |
818 if (r->args.len > 0) { | |
819 *p++ = '?'; | |
820 p = ngx_copy(p, r->args.data, r->args.len); | |
821 } | |
822 | |
823 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
824 b->last = ngx_http_v2_write_value(b->last, val_tmp, p - val_tmp, tmp); | |
825 | |
826 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
827 "grpc header: \":path: %*s\"", p - val_tmp, val_tmp); | |
828 | |
829 } else { | |
830 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
831 b->last = ngx_http_v2_write_value(b->last, r->uri.data, | |
832 r->uri.len, tmp); | |
833 | |
834 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
835 "grpc header: \":path: %V\"", &r->uri); | |
836 } | |
837 | |
838 if (!glcf->host_set) { | |
839 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_AUTHORITY_INDEX); | |
840 b->last = ngx_http_v2_write_value(b->last, glcf->host.data, | |
841 glcf->host.len, tmp); | |
842 | |
843 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
844 "grpc header: \":authority: %V\"", &glcf->host); | |
845 } | |
846 | |
847 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
848 | |
849 e.ip = glcf->headers.values->elts; | |
850 e.request = r; | |
851 e.flushed = 1; | |
852 | |
853 le.ip = glcf->headers.lengths->elts; | |
854 | |
855 while (*(uintptr_t *) le.ip) { | |
856 | |
857 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
858 key_len = lcode(&le); | |
859 | |
860 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
861 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
862 } | |
863 le.ip += sizeof(uintptr_t); | |
864 | |
865 if (val_len == 0) { | |
866 e.skip = 1; | |
867 | |
868 while (*(uintptr_t *) e.ip) { | |
869 code = *(ngx_http_script_code_pt *) e.ip; | |
870 code((ngx_http_script_engine_t *) &e); | |
871 } | |
872 e.ip += sizeof(uintptr_t); | |
873 | |
874 e.skip = 0; | |
875 | |
876 continue; | |
877 } | |
878 | |
879 *b->last++ = 0; | |
880 | |
881 e.pos = key_tmp; | |
882 | |
883 code = *(ngx_http_script_code_pt *) e.ip; | |
884 code((ngx_http_script_engine_t *) &e); | |
885 | |
886 b->last = ngx_http_v2_write_name(b->last, key_tmp, key_len, tmp); | |
887 | |
888 e.pos = val_tmp; | |
889 | |
890 while (*(uintptr_t *) e.ip) { | |
891 code = *(ngx_http_script_code_pt *) e.ip; | |
892 code((ngx_http_script_engine_t *) &e); | |
893 } | |
894 e.ip += sizeof(uintptr_t); | |
895 | |
896 b->last = ngx_http_v2_write_value(b->last, val_tmp, val_len, tmp); | |
897 | |
898 #if (NGX_DEBUG) | |
899 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
900 ngx_strlow(key_tmp, key_tmp, key_len); | |
901 | |
902 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
903 "grpc header: \"%*s: %*s\"", | |
904 key_len, key_tmp, val_len, val_tmp); | |
905 } | |
906 #endif | |
907 } | |
908 | |
909 if (glcf->upstream.pass_request_headers) { | |
910 part = &r->headers_in.headers.part; | |
911 header = part->elts; | |
912 | |
913 for (i = 0; /* void */; i++) { | |
914 | |
915 if (i >= part->nelts) { | |
916 if (part->next == NULL) { | |
917 break; | |
918 } | |
919 | |
920 part = part->next; | |
921 header = part->elts; | |
922 i = 0; | |
923 } | |
924 | |
925 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
926 header[i].lowcase_key, header[i].key.len)) | |
927 { | |
928 continue; | |
929 } | |
930 | |
931 *b->last++ = 0; | |
932 | |
933 b->last = ngx_http_v2_write_name(b->last, header[i].key.data, | |
934 header[i].key.len, tmp); | |
935 | |
936 b->last = ngx_http_v2_write_value(b->last, header[i].value.data, | |
937 header[i].value.len, tmp); | |
938 | |
939 #if (NGX_DEBUG) | |
940 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
941 ngx_strlow(tmp, header[i].key.data, header[i].key.len); | |
942 | |
943 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
944 "grpc header: \"%*s: %V\"", | |
945 header[i].key.len, tmp, &header[i].value); | |
946 } | |
947 #endif | |
948 } | |
949 } | |
950 | |
951 /* update headers frame length */ | |
952 | |
953 len = b->last - headers_frame - sizeof(ngx_http_grpc_frame_t); | |
954 | |
955 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
956 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
957 next = 1; | |
958 | |
959 } else { | |
960 next = 0; | |
961 } | |
962 | |
963 f = (ngx_http_grpc_frame_t *) headers_frame; | |
964 | |
965 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
966 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
967 f->length_2 = (u_char) (len & 0xff); | |
968 | |
969 /* create additional continuation frames */ | |
970 | |
971 p = headers_frame; | |
972 | |
973 while (next) { | |
974 p += sizeof(ngx_http_grpc_frame_t) + NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
975 len = b->last - p; | |
976 | |
977 ngx_memmove(p + sizeof(ngx_http_grpc_frame_t), p, len); | |
978 b->last += sizeof(ngx_http_grpc_frame_t); | |
979 | |
980 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
981 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
982 next = 1; | |
983 | |
984 } else { | |
985 next = 0; | |
986 } | |
987 | |
988 f = (ngx_http_grpc_frame_t *) p; | |
989 | |
990 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
991 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
992 f->length_2 = (u_char) (len & 0xff); | |
993 f->type = NGX_HTTP_V2_CONTINUATION_FRAME; | |
994 f->flags = 0; | |
995 f->stream_id_0 = 0; | |
996 f->stream_id_1 = 0; | |
997 f->stream_id_2 = 0; | |
998 f->stream_id_3 = 1; | |
999 } | |
1000 | |
1001 f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG; | |
1002 | |
1003 #if (NGX_DEBUG) | |
1004 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
1005 u_char buf[512]; | |
1006 size_t n, m; | |
1007 | |
1008 n = ngx_min(b->last - b->pos, 256); | |
1009 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
1010 | |
1011 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1012 "grpc header: %*s%s, len: %uz", | |
1013 m, buf, b->last - b->pos > 256 ? "..." : "", | |
1014 b->last - b->pos); | |
1015 } | |
1016 #endif | |
1017 | |
1018 if (r->request_body_no_buffering) { | |
1019 | |
1020 u->request_bufs = cl; | |
1021 | |
1022 } else { | |
1023 | |
1024 body = u->request_bufs; | |
1025 u->request_bufs = cl; | |
1026 | |
1027 if (body == NULL) { | |
1028 f = (ngx_http_grpc_frame_t *) headers_frame; | |
1029 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
1030 } | |
1031 | |
1032 while (body) { | |
1033 b = ngx_alloc_buf(r->pool); | |
1034 if (b == NULL) { | |
1035 return NGX_ERROR; | |
1036 } | |
1037 | |
1038 ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); | |
1039 | |
1040 cl->next = ngx_alloc_chain_link(r->pool); | |
1041 if (cl->next == NULL) { | |
1042 return NGX_ERROR; | |
1043 } | |
1044 | |
1045 cl = cl->next; | |
1046 cl->buf = b; | |
1047 | |
1048 body = body->next; | |
1049 } | |
1050 | |
1051 b->last_buf = 1; | |
1052 } | |
1053 | |
1054 u->output.output_filter = ngx_http_grpc_body_output_filter; | |
1055 u->output.filter_ctx = r; | |
1056 | |
1057 b->flush = 1; | |
1058 cl->next = NULL; | |
1059 | |
1060 return NGX_OK; | |
1061 } | |
1062 | |
1063 | |
1064 static ngx_int_t | |
1065 ngx_http_grpc_reinit_request(ngx_http_request_t *r) | |
1066 { | |
1067 ngx_http_grpc_ctx_t *ctx; | |
1068 | |
1069 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
1070 | |
1071 if (ctx == NULL) { | |
1072 return NGX_OK; | |
1073 } | |
1074 | |
1075 ctx->state = 0; | |
1076 ctx->header_sent = 0; | |
1077 ctx->output_closed = 0; | |
1078 ctx->parsing_headers = 0; | |
1079 ctx->end_stream = 0; | |
1080 ctx->status = 0; | |
1081 ctx->connection = NULL; | |
1082 | |
1083 return NGX_OK; | |
1084 } | |
1085 | |
1086 | |
1087 static ngx_int_t | |
1088 ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in) | |
1089 { | |
1090 ngx_http_request_t *r = data; | |
1091 | |
1092 off_t file_pos; | |
1093 u_char *p, *pos, *start; | |
1094 size_t len, limit; | |
1095 ngx_buf_t *b; | |
1096 ngx_int_t rc; | |
1097 ngx_uint_t next, last; | |
1098 ngx_chain_t *cl, *out, **ll; | |
1099 ngx_http_grpc_ctx_t *ctx; | |
1100 ngx_http_grpc_frame_t *f; | |
1101 | |
1102 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1103 "grpc output filter"); | |
1104 | |
1105 ctx = ngx_http_grpc_get_ctx(r); | |
1106 | |
1107 if (ctx == NULL) { | |
1108 return NGX_ERROR; | |
1109 } | |
1110 | |
1111 if (in) { | |
1112 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { | |
1113 return NGX_ERROR; | |
1114 } | |
1115 } | |
1116 | |
1117 out = NULL; | |
1118 ll = &out; | |
1119 | |
1120 if (!ctx->header_sent) { | |
1121 /* first buffer contains headers */ | |
1122 | |
1123 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1124 "grpc output header"); | |
1125 | |
1126 ctx->header_sent = 1; | |
1127 | |
1128 if (ctx->id != 1) { | |
1129 /* | |
1130 * keepalive connection: skip connection preface, | |
1131 * update stream identifiers | |
1132 */ | |
1133 | |
1134 b = ctx->in->buf; | |
1135 b->pos += sizeof(ngx_http_grpc_connection_start) - 1; | |
1136 | |
1137 p = b->pos; | |
1138 | |
1139 while (p < b->last) { | |
1140 f = (ngx_http_grpc_frame_t *) p; | |
1141 p += sizeof(ngx_http_grpc_frame_t); | |
1142 | |
1143 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1144 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1145 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1146 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1147 | |
1148 p += (f->length_0 << 16) + (f->length_1 << 8) + f->length_2; | |
1149 } | |
1150 } | |
1151 | |
1152 if (ctx->in->buf->last_buf) { | |
1153 ctx->output_closed = 1; | |
1154 } | |
1155 | |
1156 *ll = ctx->in; | |
1157 ll = &ctx->in->next; | |
1158 | |
1159 ctx->in = ctx->in->next; | |
1160 } | |
1161 | |
1162 if (ctx->out) { | |
1163 /* queued control frames */ | |
1164 | |
1165 *ll = ctx->out; | |
1166 | |
1167 for (cl = ctx->out, ll = &cl->next; cl; cl = cl->next) { | |
1168 ll = &cl->next; | |
1169 } | |
1170 | |
1171 ctx->out = NULL; | |
1172 } | |
1173 | |
1174 f = NULL; | |
1175 last = 0; | |
1176 | |
1177 limit = ngx_max(0, ctx->send_window); | |
1178 | |
1179 if (limit > ctx->connection->send_window) { | |
1180 limit = ctx->connection->send_window; | |
1181 } | |
1182 | |
1183 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1184 "grpc output limit: %uz w:%z:%uz", | |
1185 limit, ctx->send_window, ctx->connection->send_window); | |
1186 | |
1187 #if (NGX_SUPPRESS_WARN) | |
1188 file_pos = 0; | |
1189 pos = NULL; | |
1190 cl = NULL; | |
1191 #endif | |
1192 | |
1193 in = ctx->in; | |
1194 | |
1195 while (in && limit > 0) { | |
1196 | |
1197 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
1198 "grpc output in l:%d f:%d %p, pos %p, size: %z " | |
1199 "file: %O, size: %O", | |
1200 in->buf->last_buf, | |
1201 in->buf->in_file, | |
1202 in->buf->start, in->buf->pos, | |
1203 in->buf->last - in->buf->pos, | |
1204 in->buf->file_pos, | |
1205 in->buf->file_last - in->buf->file_pos); | |
1206 | |
1207 if (ngx_buf_special(in->buf)) { | |
1208 goto next; | |
1209 } | |
1210 | |
1211 if (in->buf->in_file) { | |
1212 file_pos = in->buf->file_pos; | |
1213 | |
1214 } else { | |
1215 pos = in->buf->pos; | |
1216 } | |
1217 | |
1218 next = 0; | |
1219 | |
1220 do { | |
1221 | |
1222 cl = ngx_http_grpc_get_buf(r, ctx); | |
1223 if (cl == NULL) { | |
1224 return NGX_ERROR; | |
1225 } | |
1226 | |
1227 b = cl->buf; | |
1228 | |
1229 f = (ngx_http_grpc_frame_t *) b->last; | |
1230 b->last += sizeof(ngx_http_grpc_frame_t); | |
1231 | |
1232 *ll = cl; | |
1233 ll = &cl->next; | |
1234 | |
1235 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
1236 if (cl == NULL) { | |
1237 return NGX_ERROR; | |
1238 } | |
1239 | |
1240 b = cl->buf; | |
1241 start = b->start; | |
1242 | |
1243 ngx_memcpy(b, in->buf, sizeof(ngx_buf_t)); | |
1244 | |
1245 /* | |
1246 * restore b->start to preserve memory allocated in the buffer, | |
1247 * to reuse it later for headers and control frames | |
1248 */ | |
1249 | |
1250 b->start = start; | |
1251 | |
1252 if (in->buf->in_file) { | |
1253 b->file_pos = file_pos; | |
1254 file_pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
1255 | |
1256 if (file_pos >= in->buf->file_last) { | |
1257 file_pos = in->buf->file_last; | |
1258 next = 1; | |
1259 } | |
1260 | |
1261 b->file_last = file_pos; | |
1262 len = (ngx_uint_t) (file_pos - b->file_pos); | |
1263 | |
1264 } else { | |
1265 b->pos = pos; | |
1266 pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
1267 | |
1268 if (pos >= in->buf->last) { | |
1269 pos = in->buf->last; | |
1270 next = 1; | |
1271 } | |
1272 | |
1273 b->last = pos; | |
1274 len = (ngx_uint_t) (pos - b->pos); | |
1275 } | |
1276 | |
1277 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
1278 b->shadow = in->buf; | |
1279 b->last_shadow = next; | |
1280 | |
1281 b->last_buf = 0; | |
1282 b->last_in_chain = 0; | |
1283 | |
1284 *ll = cl; | |
1285 ll = &cl->next; | |
1286 | |
1287 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
1288 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
1289 f->length_2 = (u_char) (len & 0xff); | |
1290 f->type = NGX_HTTP_V2_DATA_FRAME; | |
1291 f->flags = 0; | |
1292 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1293 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1294 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1295 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1296 | |
1297 limit -= len; | |
1298 ctx->send_window -= len; | |
1299 ctx->connection->send_window -= len; | |
1300 | |
1301 } while (!next && limit > 0); | |
1302 | |
1303 if (!next) { | |
1304 /* | |
1305 * if the buffer wasn't fully sent due to flow control limits, | |
1306 * preserve position for future use | |
1307 */ | |
1308 | |
1309 if (in->buf->in_file) { | |
1310 in->buf->file_pos = file_pos; | |
1311 | |
1312 } else { | |
1313 in->buf->pos = pos; | |
1314 } | |
1315 | |
1316 break; | |
1317 } | |
1318 | |
1319 next: | |
1320 | |
1321 if (in->buf->last_buf) { | |
1322 last = 1; | |
1323 } | |
1324 | |
1325 in = in->next; | |
1326 } | |
1327 | |
1328 ctx->in = in; | |
1329 | |
1330 if (last) { | |
1331 | |
1332 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1333 "grpc output last"); | |
1334 | |
1335 ctx->output_closed = 1; | |
1336 | |
1337 if (f) { | |
1338 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
1339 | |
1340 } else { | |
1341 cl = ngx_http_grpc_get_buf(r, ctx); | |
1342 if (cl == NULL) { | |
1343 return NGX_ERROR; | |
1344 } | |
1345 | |
1346 b = cl->buf; | |
1347 | |
1348 f = (ngx_http_grpc_frame_t *) b->last; | |
1349 b->last += sizeof(ngx_http_grpc_frame_t); | |
1350 | |
1351 f->length_0 = 0; | |
1352 f->length_1 = 0; | |
1353 f->length_2 = 0; | |
1354 f->type = NGX_HTTP_V2_DATA_FRAME; | |
1355 f->flags = NGX_HTTP_V2_END_STREAM_FLAG; | |
1356 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1357 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1358 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1359 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1360 | |
1361 *ll = cl; | |
1362 ll = &cl->next; | |
1363 } | |
1364 | |
1365 cl->buf->last_buf = 1; | |
1366 } | |
1367 | |
1368 *ll = NULL; | |
1369 | |
1370 #if (NGX_DEBUG) | |
1371 | |
1372 for (cl = out; cl; cl = cl->next) { | |
1373 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
1374 "grpc output out l:%d f:%d %p, pos %p, size: %z " | |
1375 "file: %O, size: %O", | |
1376 cl->buf->last_buf, | |
1377 cl->buf->in_file, | |
1378 cl->buf->start, cl->buf->pos, | |
1379 cl->buf->last - cl->buf->pos, | |
1380 cl->buf->file_pos, | |
1381 cl->buf->file_last - cl->buf->file_pos); | |
1382 } | |
1383 | |
1384 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1385 "grpc output limit: %uz w:%z:%uz", | |
1386 limit, ctx->send_window, ctx->connection->send_window); | |
1387 | |
1388 #endif | |
1389 | |
1390 rc = ngx_chain_writer(&r->upstream->writer, out); | |
1391 | |
1392 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, | |
1393 (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter); | |
1394 | |
1395 for (cl = ctx->free; cl; cl = cl->next) { | |
1396 | |
1397 /* mark original buffers as sent */ | |
1398 | |
1399 if (cl->buf->shadow) { | |
1400 if (cl->buf->last_shadow) { | |
1401 b = cl->buf->shadow; | |
1402 b->pos = b->last; | |
1403 } | |
1404 | |
1405 cl->buf->shadow = NULL; | |
1406 } | |
1407 } | |
1408 | |
1409 if (rc == NGX_OK && ctx->in) { | |
1410 rc = NGX_AGAIN; | |
1411 } | |
1412 | |
1413 return rc; | |
1414 } | |
1415 | |
1416 | |
1417 static ngx_int_t | |
1418 ngx_http_grpc_process_header(ngx_http_request_t *r) | |
1419 { | |
1420 ngx_str_t *status_line; | |
1421 ngx_int_t rc, status; | |
1422 ngx_buf_t *b; | |
1423 ngx_table_elt_t *h; | |
1424 ngx_http_upstream_t *u; | |
1425 ngx_http_grpc_ctx_t *ctx; | |
1426 ngx_http_upstream_header_t *hh; | |
1427 ngx_http_upstream_main_conf_t *umcf; | |
1428 | |
1429 u = r->upstream; | |
1430 b = &u->buffer; | |
1431 | |
1432 #if (NGX_DEBUG) | |
1433 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
1434 u_char buf[512]; | |
1435 size_t n, m; | |
1436 | |
1437 n = ngx_min(b->last - b->pos, 256); | |
1438 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
1439 | |
1440 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1441 "grpc response: %*s%s, len: %uz", | |
1442 m, buf, b->last - b->pos > 256 ? "..." : "", | |
1443 b->last - b->pos); | |
1444 } | |
1445 #endif | |
1446 | |
1447 ctx = ngx_http_grpc_get_ctx(r); | |
1448 | |
1449 if (ctx == NULL) { | |
1450 return NGX_ERROR; | |
1451 } | |
1452 | |
1453 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); | |
1454 | |
1455 for ( ;; ) { | |
1456 | |
1457 if (ctx->state < ngx_http_grpc_st_payload) { | |
1458 | |
1459 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
1460 | |
1461 if (rc == NGX_AGAIN) { | |
1462 | |
1463 /* | |
1464 * there can be a lot of window update frames, | |
1465 * so we reset buffer if it is empty and we haven't | |
1466 * started parsing headers yet | |
1467 */ | |
1468 | |
1469 if (!ctx->parsing_headers) { | |
1470 b->pos = b->start; | |
1471 b->last = b->pos; | |
1472 } | |
1473 | |
1474 return NGX_AGAIN; | |
1475 } | |
1476 | |
1477 if (rc == NGX_ERROR) { | |
1478 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1479 } | |
1480 | |
1481 /* | |
1482 * RFC 7540 says that implementations MUST discard frames | |
1483 * that have unknown or unsupported types. However, extension | |
1484 * frames that appear in the middle of a header block are | |
1485 * not permitted. Also, for obvious reasons CONTINUATION frames | |
1486 * cannot appear before headers, and DATA frames are not expected | |
1487 * to appear before all headers are parsed. | |
1488 */ | |
1489 | |
1490 if (ctx->type == NGX_HTTP_V2_DATA_FRAME | |
1491 || (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
1492 && !ctx->parsing_headers) | |
1493 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
1494 && ctx->parsing_headers)) | |
1495 { | |
1496 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1497 "upstream sent unexpected http2 frame: %d", | |
1498 ctx->type); | |
1499 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1500 } | |
1501 | |
1502 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
1503 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1504 "upstream sent frame for unknown stream %ui", | |
1505 ctx->stream_id); | |
1506 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1507 } | |
1508 } | |
1509 | |
1510 /* frame payload */ | |
1511 | |
1512 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
1513 | |
1514 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
1515 | |
1516 if (rc == NGX_AGAIN) { | |
1517 return NGX_AGAIN; | |
1518 } | |
1519 | |
1520 if (rc == NGX_ERROR) { | |
1521 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1522 } | |
1523 | |
1524 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1525 "upstream rejected request with error %ui", | |
1526 ctx->error); | |
1527 | |
1528 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1529 } | |
1530 | |
1531 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
1532 | |
1533 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
1534 | |
1535 if (rc == NGX_AGAIN) { | |
1536 return NGX_AGAIN; | |
1537 } | |
1538 | |
1539 if (rc == NGX_ERROR) { | |
1540 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1541 } | |
1542 | |
1543 /* | |
1544 * If stream_id is lower than one we use, our | |
1545 * request won't be processed and needs to be retried. | |
1546 * If stream_id is greater or equal to the one we use, | |
1547 * we can continue normally (except we can't use this | |
1548 * connection for additional requests). If there is | |
1549 * a real error, the connection will be closed. | |
1550 */ | |
1551 | |
1552 if (ctx->stream_id < ctx->id) { | |
1553 | |
1554 /* TODO: we can retry non-idempotent requests */ | |
1555 | |
1556 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1557 "upstream sent goaway with error %ui", | |
1558 ctx->error); | |
1559 | |
1560 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1561 } | |
1562 | |
1563 continue; | |
1564 } | |
1565 | |
1566 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
1567 | |
1568 rc = ngx_http_grpc_parse_window_update(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 if (ctx->in) { | |
1579 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1580 } | |
1581 | |
1582 continue; | |
1583 } | |
1584 | |
1585 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
1586 | |
1587 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
1588 | |
1589 if (rc == NGX_AGAIN) { | |
1590 return NGX_AGAIN; | |
1591 } | |
1592 | |
1593 if (rc == NGX_ERROR) { | |
1594 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1595 } | |
1596 | |
1597 if (ctx->in) { | |
1598 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1599 } | |
1600 | |
1601 continue; | |
1602 } | |
1603 | |
1604 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
1605 | |
1606 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
1607 | |
1608 if (rc == NGX_AGAIN) { | |
1609 return NGX_AGAIN; | |
1610 } | |
1611 | |
1612 if (rc == NGX_ERROR) { | |
1613 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1614 } | |
1615 | |
1616 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1617 continue; | |
1618 } | |
1619 | |
1620 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
1621 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1622 "upstream sent unexpected push promise frame"); | |
1623 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1624 } | |
1625 | |
1626 if (ctx->type != NGX_HTTP_V2_HEADERS_FRAME | |
1627 && ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME) | |
1628 { | |
1629 /* priority, unknown frames */ | |
1630 | |
1631 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
1632 ctx->rest -= b->last - b->pos; | |
1633 b->pos = b->last; | |
1634 return NGX_AGAIN; | |
1635 } | |
1636 | |
1637 b->pos += ctx->rest; | |
1638 ctx->rest = 0; | |
1639 ctx->state = ngx_http_grpc_st_start; | |
1640 | |
1641 continue; | |
1642 } | |
1643 | |
1644 /* headers */ | |
1645 | |
1646 for ( ;; ) { | |
1647 | |
1648 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
1649 | |
1650 if (rc == NGX_AGAIN) { | |
1651 break; | |
1652 } | |
1653 | |
1654 if (rc == NGX_OK) { | |
1655 | |
1656 /* a header line has been parsed successfully */ | |
1657 | |
1658 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1659 "grpc header: \"%V: %V\"", | |
1660 &ctx->name, &ctx->value); | |
1661 | |
1662 if (ctx->name.len && ctx->name.data[0] == ':') { | |
1663 | |
1664 if (ctx->name.len != sizeof(":status") - 1 | |
1665 || ngx_strncmp(ctx->name.data, ":status", | |
1666 sizeof(":status") - 1) | |
1667 != 0) | |
1668 { | |
1669 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1670 "upstream sent invalid header \"%V: %V\"", | |
1671 &ctx->name, &ctx->value); | |
1672 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1673 } | |
1674 | |
1675 if (ctx->status) { | |
1676 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1677 "upstream sent duplicate :status header"); | |
1678 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1679 } | |
1680 | |
1681 status_line = &ctx->value; | |
1682 | |
1683 if (status_line->len != 3) { | |
1684 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1685 "upstream sent invalid :status \"%V\"", | |
1686 status_line); | |
1687 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1688 } | |
1689 | |
1690 status = ngx_atoi(status_line->data, 3); | |
1691 | |
1692 if (status == NGX_ERROR) { | |
1693 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1694 "upstream sent invalid :status \"%V\"", | |
1695 status_line); | |
1696 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1697 } | |
1698 | |
1699 if (status < NGX_HTTP_OK) { | |
1700 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1701 "upstream sent unexpected :status \"%V\"", | |
1702 status_line); | |
1703 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1704 } | |
1705 | |
1706 u->headers_in.status_n = status; | |
1707 | |
1708 if (u->state && u->state->status == 0) { | |
1709 u->state->status = status; | |
1710 } | |
1711 | |
1712 ctx->status = 1; | |
1713 | |
1714 continue; | |
1715 | |
1716 } else if (!ctx->status) { | |
1717 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1718 "upstream sent no :status header"); | |
1719 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1720 } | |
1721 | |
1722 h = ngx_list_push(&u->headers_in.headers); | |
1723 if (h == NULL) { | |
1724 return NGX_ERROR; | |
1725 } | |
1726 | |
1727 h->key = ctx->name; | |
1728 h->value = ctx->value; | |
1729 h->lowcase_key = h->key.data; | |
1730 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
1731 | |
1732 hh = ngx_hash_find(&umcf->headers_in_hash, h->hash, | |
1733 h->lowcase_key, h->key.len); | |
1734 | |
1735 if (hh && hh->handler(r, h, hh->offset) != NGX_OK) { | |
1736 return NGX_ERROR; | |
1737 } | |
1738 | |
1739 continue; | |
1740 } | |
1741 | |
1742 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
1743 | |
1744 /* a whole header has been parsed successfully */ | |
1745 | |
1746 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1747 "grpc header done"); | |
1748 | |
7235
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gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1749 if (ctx->end_stream) { |
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1750 u->headers_in.content_length_n = 0; |
c2a0a838c40f
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1751 |
c2a0a838c40f
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1752 if (ctx->in == NULL |
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1753 && ctx->out == NULL |
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1754 && ctx->output_closed |
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1755 && b->last == b->pos) |
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1756 { |
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parents:
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diff
changeset
|
1757 u->keepalive = 1; |
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gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1758 } |
7233 | 1759 } |
1760 | |
1761 return NGX_OK; | |
1762 } | |
1763 | |
1764 /* there was error while a header line parsing */ | |
1765 | |
1766 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1767 "upstream sent invalid header"); | |
1768 | |
1769 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1770 } | |
1771 | |
1772 /* rc == NGX_AGAIN */ | |
1773 | |
1774 if (ctx->rest == 0) { | |
1775 ctx->state = ngx_http_grpc_st_start; | |
1776 continue; | |
1777 } | |
1778 | |
1779 return NGX_AGAIN; | |
1780 } | |
1781 } | |
1782 | |
1783 | |
1784 static ngx_int_t | |
1785 ngx_http_grpc_filter_init(void *data) | |
1786 { | |
1787 ngx_http_grpc_ctx_t *ctx = data; | |
1788 | |
1789 ngx_http_request_t *r; | |
1790 ngx_http_upstream_t *u; | |
1791 | |
1792 r = ctx->request; | |
1793 u = r->upstream; | |
1794 | |
1795 u->length = 1; | |
1796 | |
1797 if (ctx->end_stream) { | |
1798 u->length = 0; | |
1799 } | |
1800 | |
1801 return NGX_OK; | |
1802 } | |
1803 | |
1804 | |
1805 static ngx_int_t | |
1806 ngx_http_grpc_filter(void *data, ssize_t bytes) | |
1807 { | |
1808 ngx_http_grpc_ctx_t *ctx = data; | |
1809 | |
1810 ngx_int_t rc; | |
1811 ngx_buf_t *b, *buf; | |
1812 ngx_chain_t *cl, **ll; | |
1813 ngx_table_elt_t *h; | |
1814 ngx_http_request_t *r; | |
1815 ngx_http_upstream_t *u; | |
1816 | |
1817 r = ctx->request; | |
1818 u = r->upstream; | |
1819 b = &u->buffer; | |
1820 | |
1821 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1822 "grpc filter bytes:%z", bytes); | |
1823 | |
1824 b->pos = b->last; | |
1825 b->last += bytes; | |
1826 | |
1827 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
1828 ll = &cl->next; | |
1829 } | |
1830 | |
1831 for ( ;; ) { | |
1832 | |
1833 if (ctx->state < ngx_http_grpc_st_payload) { | |
1834 | |
1835 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
1836 | |
1837 if (rc == NGX_AGAIN) { | |
1838 return NGX_AGAIN; | |
1839 } | |
1840 | |
1841 if (rc == NGX_ERROR) { | |
1842 return NGX_ERROR; | |
1843 } | |
1844 | |
1845 if ((ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
1846 && !ctx->parsing_headers) | |
1847 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
1848 && ctx->parsing_headers)) | |
1849 { | |
1850 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1851 "upstream sent unexpected http2 frame: %d", | |
1852 ctx->type); | |
1853 return NGX_ERROR; | |
1854 } | |
1855 | |
1856 if (ctx->type == NGX_HTTP_V2_DATA_FRAME) { | |
1857 | |
1858 if (ctx->stream_id != ctx->id) { | |
1859 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1860 "upstream sent data frame " | |
1861 "for unknown stream %ui", | |
1862 ctx->stream_id); | |
1863 return NGX_ERROR; | |
1864 } | |
1865 | |
1866 if (ctx->rest > ctx->recv_window) { | |
1867 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1868 "upstream violated stream flow control, " | |
1869 "received %uz data frame with window %uz", | |
1870 ctx->rest, ctx->recv_window); | |
1871 return NGX_ERROR; | |
1872 } | |
1873 | |
1874 if (ctx->rest > ctx->connection->recv_window) { | |
1875 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1876 "upstream violated connection flow control, " | |
1877 "received %uz data frame with window %uz", | |
1878 ctx->rest, ctx->connection->recv_window); | |
1879 return NGX_ERROR; | |
1880 } | |
1881 | |
1882 ctx->recv_window -= ctx->rest; | |
1883 ctx->connection->recv_window -= ctx->rest; | |
1884 | |
1885 if (ctx->connection->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4 | |
1886 || ctx->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4) | |
1887 { | |
1888 if (ngx_http_grpc_send_window_update(r, ctx) != NGX_OK) { | |
1889 return NGX_ERROR; | |
1890 } | |
1891 | |
1892 ngx_post_event(u->peer.connection->write, | |
1893 &ngx_posted_events); | |
1894 } | |
1895 } | |
1896 | |
1897 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
1898 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1899 "upstream sent frame for unknown stream %ui", | |
1900 ctx->stream_id); | |
1901 return NGX_ERROR; | |
1902 } | |
1903 | |
1904 ctx->padding = 0; | |
1905 } | |
1906 | |
1907 if (ctx->state == ngx_http_grpc_st_padding) { | |
1908 | |
1909 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
1910 ctx->rest -= b->last - b->pos; | |
1911 b->pos = b->last; | |
1912 return NGX_AGAIN; | |
1913 } | |
1914 | |
1915 b->pos += ctx->rest; | |
1916 ctx->rest = 0; | |
1917 ctx->state = ngx_http_grpc_st_start; | |
1918 | |
1919 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
1920 u->length = 0; | |
1921 | |
1922 if (ctx->in == NULL | |
1923 && ctx->out == NULL | |
1924 && ctx->output_closed | |
1925 && b->last == b->pos) | |
1926 { | |
1927 u->keepalive = 1; | |
1928 } | |
1929 | |
1930 break; | |
1931 } | |
1932 | |
1933 continue; | |
1934 } | |
1935 | |
1936 /* frame payload */ | |
1937 | |
1938 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
1939 | |
1940 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
1941 | |
1942 if (rc == NGX_AGAIN) { | |
1943 return NGX_AGAIN; | |
1944 } | |
1945 | |
1946 if (rc == NGX_ERROR) { | |
1947 return NGX_ERROR; | |
1948 } | |
1949 | |
1950 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1951 "upstream rejected request with error %ui", | |
1952 ctx->error); | |
1953 | |
1954 return NGX_ERROR; | |
1955 } | |
1956 | |
1957 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
1958 | |
1959 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
1960 | |
1961 if (rc == NGX_AGAIN) { | |
1962 return NGX_AGAIN; | |
1963 } | |
1964 | |
1965 if (rc == NGX_ERROR) { | |
1966 return NGX_ERROR; | |
1967 } | |
1968 | |
1969 /* | |
1970 * If stream_id is lower than one we use, our | |
1971 * request won't be processed and needs to be retried. | |
1972 * If stream_id is greater or equal to the one we use, | |
1973 * we can continue normally (except we can't use this | |
1974 * connection for additional requests). If there is | |
1975 * a real error, the connection will be closed. | |
1976 */ | |
1977 | |
1978 if (ctx->stream_id < ctx->id) { | |
1979 | |
1980 /* TODO: we can retry non-idempotent requests */ | |
1981 | |
1982 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1983 "upstream sent goaway with error %ui", | |
1984 ctx->error); | |
1985 | |
1986 return NGX_ERROR; | |
1987 } | |
1988 | |
1989 continue; | |
1990 } | |
1991 | |
1992 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
1993 | |
1994 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
1995 | |
1996 if (rc == NGX_AGAIN) { | |
1997 return NGX_AGAIN; | |
1998 } | |
1999 | |
2000 if (rc == NGX_ERROR) { | |
2001 return NGX_ERROR; | |
2002 } | |
2003 | |
2004 if (ctx->in) { | |
2005 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2006 } | |
2007 | |
2008 continue; | |
2009 } | |
2010 | |
2011 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
2012 | |
2013 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
2014 | |
2015 if (rc == NGX_AGAIN) { | |
2016 return NGX_AGAIN; | |
2017 } | |
2018 | |
2019 if (rc == NGX_ERROR) { | |
2020 return NGX_ERROR; | |
2021 } | |
2022 | |
2023 if (ctx->in) { | |
2024 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2025 } | |
2026 | |
2027 continue; | |
2028 } | |
2029 | |
2030 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
2031 | |
2032 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
2033 | |
2034 if (rc == NGX_AGAIN) { | |
2035 return NGX_AGAIN; | |
2036 } | |
2037 | |
2038 if (rc == NGX_ERROR) { | |
2039 return NGX_ERROR; | |
2040 } | |
2041 | |
2042 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2043 continue; | |
2044 } | |
2045 | |
2046 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
2047 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2048 "upstream sent unexpected push promise frame"); | |
2049 return NGX_ERROR; | |
2050 } | |
2051 | |
2052 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME | |
2053 || ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) | |
2054 { | |
2055 for ( ;; ) { | |
2056 | |
2057 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
2058 | |
2059 if (rc == NGX_AGAIN) { | |
2060 break; | |
2061 } | |
2062 | |
2063 if (rc == NGX_OK) { | |
2064 | |
2065 /* a header line has been parsed successfully */ | |
2066 | |
2067 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2068 "grpc trailer: \"%V: %V\"", | |
2069 &ctx->name, &ctx->value); | |
2070 | |
2071 if (ctx->name.len && ctx->name.data[0] == ':') { | |
2072 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2073 "upstream sent invalid " | |
2074 "trailer \"%V: %V\"", | |
2075 &ctx->name, &ctx->value); | |
2076 return NGX_ERROR; | |
2077 } | |
2078 | |
2079 h = ngx_list_push(&u->headers_in.trailers); | |
2080 if (h == NULL) { | |
2081 return NGX_ERROR; | |
2082 } | |
2083 | |
2084 h->key = ctx->name; | |
2085 h->value = ctx->value; | |
2086 h->lowcase_key = h->key.data; | |
2087 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
2088 | |
2089 continue; | |
2090 } | |
2091 | |
2092 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
2093 | |
2094 /* a whole header has been parsed successfully */ | |
2095 | |
2096 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2097 "grpc trailer done"); | |
2098 | |
2099 if (ctx->end_stream) { | |
2100 u->length = 0; | |
2101 | |
2102 if (ctx->in == NULL | |
2103 && ctx->out == NULL | |
2104 && ctx->output_closed | |
2105 && b->last == b->pos) | |
2106 { | |
2107 u->keepalive = 1; | |
2108 } | |
2109 | |
2110 return NGX_OK; | |
2111 } | |
2112 | |
2113 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2114 "upstream sent trailer without " | |
2115 "end stream flag"); | |
2116 return NGX_ERROR; | |
2117 } | |
2118 | |
2119 /* there was error while a header line parsing */ | |
2120 | |
2121 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2122 "upstream sent invalid trailer"); | |
2123 | |
2124 return NGX_ERROR; | |
2125 } | |
2126 | |
2127 /* rc == NGX_AGAIN */ | |
2128 | |
2129 if (ctx->rest == 0) { | |
2130 ctx->state = ngx_http_grpc_st_start; | |
2131 continue; | |
2132 } | |
2133 | |
2134 return NGX_AGAIN; | |
2135 } | |
2136 | |
2137 if (ctx->type != NGX_HTTP_V2_DATA_FRAME) { | |
2138 | |
2139 /* priority, unknown frames */ | |
2140 | |
2141 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2142 ctx->rest -= b->last - b->pos; | |
2143 b->pos = b->last; | |
2144 return NGX_AGAIN; | |
2145 } | |
2146 | |
2147 b->pos += ctx->rest; | |
2148 ctx->rest = 0; | |
2149 ctx->state = ngx_http_grpc_st_start; | |
2150 | |
2151 continue; | |
2152 } | |
2153 | |
2154 /* | |
2155 * data frame: | |
2156 * | |
2157 * +---------------+ | |
2158 * |Pad Length? (8)| | |
2159 * +---------------+-----------------------------------------------+ | |
2160 * | Data (*) ... | |
2161 * +---------------------------------------------------------------+ | |
2162 * | Padding (*) ... | |
2163 * +---------------------------------------------------------------+ | |
2164 */ | |
2165 | |
2166 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
2167 | |
2168 if (ctx->rest == 0) { | |
2169 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2170 "upstream sent too short http2 frame"); | |
2171 return NGX_ERROR; | |
2172 } | |
2173 | |
2174 if (b->pos == b->last) { | |
2175 return NGX_AGAIN; | |
2176 } | |
2177 | |
2178 ctx->flags &= ~NGX_HTTP_V2_PADDED_FLAG; | |
2179 ctx->padding = *b->pos++; | |
2180 ctx->rest -= 1; | |
2181 | |
2182 if (ctx->padding > ctx->rest) { | |
2183 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2184 "upstream sent http2 frame with too long " | |
2185 "padding: %d in frame %uz", | |
2186 ctx->padding, ctx->rest); | |
2187 return NGX_ERROR; | |
2188 } | |
2189 | |
2190 continue; | |
2191 } | |
2192 | |
2193 if (ctx->rest == ctx->padding) { | |
2194 goto done; | |
2195 } | |
2196 | |
2197 if (b->pos == b->last) { | |
2198 return NGX_AGAIN; | |
2199 } | |
2200 | |
2201 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
2202 if (cl == NULL) { | |
2203 return NGX_ERROR; | |
2204 } | |
2205 | |
2206 *ll = cl; | |
2207 ll = &cl->next; | |
2208 | |
2209 buf = cl->buf; | |
2210 | |
2211 buf->flush = 1; | |
2212 buf->memory = 1; | |
2213 | |
2214 buf->pos = b->pos; | |
2215 buf->tag = u->output.tag; | |
2216 | |
2217 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2218 "grpc output buf %p", buf->pos); | |
2219 | |
2220 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
2221 | |
2222 ctx->rest -= b->last - b->pos; | |
2223 b->pos = b->last; | |
2224 buf->last = b->pos; | |
2225 | |
2226 return NGX_AGAIN; | |
2227 } | |
2228 | |
2229 b->pos += ctx->rest - ctx->padding; | |
2230 buf->last = b->pos; | |
2231 ctx->rest = ctx->padding; | |
2232 | |
2233 done: | |
2234 | |
2235 if (ctx->padding) { | |
2236 ctx->state = ngx_http_grpc_st_padding; | |
2237 continue; | |
2238 } | |
2239 | |
2240 ctx->state = ngx_http_grpc_st_start; | |
2241 | |
2242 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
2243 u->length = 0; | |
2244 | |
2245 if (ctx->in == NULL | |
2246 && ctx->out == NULL | |
2247 && ctx->output_closed | |
2248 && b->last == b->pos) | |
2249 { | |
2250 u->keepalive = 1; | |
2251 } | |
2252 | |
2253 break; | |
2254 } | |
2255 } | |
2256 | |
2257 return NGX_OK; | |
2258 } | |
2259 | |
2260 | |
2261 static ngx_int_t | |
2262 ngx_http_grpc_parse_frame(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2263 ngx_buf_t *b) | |
2264 { | |
2265 u_char ch, *p; | |
2266 ngx_http_grpc_state_e state; | |
2267 | |
2268 state = ctx->state; | |
2269 | |
2270 for (p = b->pos; p < b->last; p++) { | |
2271 ch = *p; | |
2272 | |
2273 #if 0 | |
2274 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2275 "grpc frame byte: %02Xd, s:%d", ch, state); | |
2276 #endif | |
2277 | |
2278 switch (state) { | |
2279 | |
2280 case ngx_http_grpc_st_start: | |
2281 ctx->rest = ch << 16; | |
2282 state = ngx_http_grpc_st_length_2; | |
2283 break; | |
2284 | |
2285 case ngx_http_grpc_st_length_2: | |
2286 ctx->rest |= ch << 8; | |
2287 state = ngx_http_grpc_st_length_3; | |
2288 break; | |
2289 | |
2290 case ngx_http_grpc_st_length_3: | |
2291 ctx->rest |= ch; | |
2292 | |
2293 if (ctx->rest > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
2294 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2295 "upstream sent too large http2 frame: %uz", | |
2296 ctx->rest); | |
2297 return NGX_ERROR; | |
2298 } | |
2299 | |
2300 state = ngx_http_grpc_st_type; | |
2301 break; | |
2302 | |
2303 case ngx_http_grpc_st_type: | |
2304 ctx->type = ch; | |
2305 state = ngx_http_grpc_st_flags; | |
2306 break; | |
2307 | |
2308 case ngx_http_grpc_st_flags: | |
2309 ctx->flags = ch; | |
2310 state = ngx_http_grpc_st_stream_id; | |
2311 break; | |
2312 | |
2313 case ngx_http_grpc_st_stream_id: | |
2314 ctx->stream_id = (ch & 0x7f) << 24; | |
2315 state = ngx_http_grpc_st_stream_id_2; | |
2316 break; | |
2317 | |
2318 case ngx_http_grpc_st_stream_id_2: | |
2319 ctx->stream_id |= ch << 16; | |
2320 state = ngx_http_grpc_st_stream_id_3; | |
2321 break; | |
2322 | |
2323 case ngx_http_grpc_st_stream_id_3: | |
2324 ctx->stream_id |= ch << 8; | |
2325 state = ngx_http_grpc_st_stream_id_4; | |
2326 break; | |
2327 | |
2328 case ngx_http_grpc_st_stream_id_4: | |
2329 ctx->stream_id |= ch; | |
2330 | |
2331 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2332 "grpc frame: %d, len: %uz, f:%d, i:%ui", | |
2333 ctx->type, ctx->rest, ctx->flags, ctx->stream_id); | |
2334 | |
2335 b->pos = p + 1; | |
2336 | |
2337 ctx->state = ngx_http_grpc_st_payload; | |
2338 ctx->frame_state = 0; | |
2339 | |
2340 return NGX_OK; | |
2341 | |
2342 /* suppress warning */ | |
2343 case ngx_http_grpc_st_payload: | |
2344 case ngx_http_grpc_st_padding: | |
2345 break; | |
2346 } | |
2347 } | |
2348 | |
2349 b->pos = p; | |
2350 ctx->state = state; | |
2351 | |
2352 return NGX_AGAIN; | |
2353 } | |
2354 | |
2355 | |
2356 static ngx_int_t | |
2357 ngx_http_grpc_parse_header(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2358 ngx_buf_t *b) | |
2359 { | |
2360 u_char ch, *p, *last; | |
2361 size_t min; | |
2362 ngx_int_t rc; | |
2363 enum { | |
2364 sw_start = 0, | |
2365 sw_padding_length, | |
2366 sw_dependency, | |
2367 sw_dependency_2, | |
2368 sw_dependency_3, | |
2369 sw_dependency_4, | |
2370 sw_weight, | |
2371 sw_fragment, | |
2372 sw_padding | |
2373 } state; | |
2374 | |
2375 state = ctx->frame_state; | |
2376 | |
2377 if (state == sw_start) { | |
2378 | |
2379 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2380 "grpc parse header: start"); | |
2381 | |
2382 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME) { | |
2383 ctx->parsing_headers = 1; | |
2384 ctx->fragment_state = 0; | |
2385 | |
2386 min = (ctx->flags & NGX_HTTP_V2_PADDED_FLAG ? 1 : 0) | |
2387 + (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG ? 5 : 0); | |
2388 | |
2389 if (ctx->rest < min) { | |
2390 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2391 "upstream sent headers frame " | |
2392 "with invalid length: %uz", | |
2393 ctx->rest); | |
2394 return NGX_ERROR; | |
2395 } | |
2396 | |
2397 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
2398 ctx->end_stream = 1; | |
2399 } | |
2400 | |
2401 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
2402 state = sw_padding_length; | |
2403 | |
2404 } else if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
2405 state = sw_dependency; | |
2406 | |
2407 } else { | |
2408 state = sw_fragment; | |
2409 } | |
2410 | |
2411 } else if (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) { | |
2412 state = sw_fragment; | |
2413 } | |
2414 | |
2415 ctx->padding = 0; | |
7242
25a4353633a0
gRPC: fixed missing state save in frame header parsing.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7240
diff
changeset
|
2416 ctx->frame_state = state; |
7233 | 2417 } |
2418 | |
2419 if (state < sw_fragment) { | |
2420 | |
2421 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2422 last = b->last; | |
2423 | |
2424 } else { | |
2425 last = b->pos + ctx->rest; | |
2426 } | |
2427 | |
2428 for (p = b->pos; p < last; p++) { | |
2429 ch = *p; | |
2430 | |
2431 #if 0 | |
2432 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2433 "grpc header byte: %02Xd s:%d", ch, state); | |
2434 #endif | |
2435 | |
2436 /* | |
2437 * headers frame: | |
2438 * | |
2439 * +---------------+ | |
2440 * |Pad Length? (8)| | |
2441 * +-+-------------+----------------------------------------------+ | |
2442 * |E| Stream Dependency? (31) | | |
2443 * +-+-------------+----------------------------------------------+ | |
2444 * | Weight? (8) | | |
2445 * +-+-------------+----------------------------------------------+ | |
2446 * | Header Block Fragment (*) ... | |
2447 * +--------------------------------------------------------------+ | |
2448 * | Padding (*) ... | |
2449 * +--------------------------------------------------------------+ | |
2450 */ | |
2451 | |
2452 switch (state) { | |
2453 | |
2454 case sw_padding_length: | |
2455 | |
2456 ctx->padding = ch; | |
2457 | |
2458 if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
2459 state = sw_dependency; | |
2460 break; | |
2461 } | |
2462 | |
2463 goto fragment; | |
2464 | |
2465 case sw_dependency: | |
2466 state = sw_dependency_2; | |
2467 break; | |
2468 | |
2469 case sw_dependency_2: | |
2470 state = sw_dependency_3; | |
2471 break; | |
2472 | |
2473 case sw_dependency_3: | |
2474 state = sw_dependency_4; | |
2475 break; | |
2476 | |
2477 case sw_dependency_4: | |
2478 state = sw_weight; | |
2479 break; | |
2480 | |
2481 case sw_weight: | |
2482 goto fragment; | |
2483 | |
2484 /* suppress warning */ | |
2485 case sw_start: | |
2486 case sw_fragment: | |
2487 case sw_padding: | |
2488 break; | |
2489 } | |
2490 } | |
2491 | |
2492 ctx->rest -= p - b->pos; | |
2493 b->pos = p; | |
2494 | |
2495 ctx->frame_state = state; | |
2496 return NGX_AGAIN; | |
2497 | |
2498 fragment: | |
2499 | |
2500 p++; | |
2501 ctx->rest -= p - b->pos; | |
2502 b->pos = p; | |
2503 | |
2504 if (ctx->padding > ctx->rest) { | |
2505 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2506 "upstream sent http2 frame with too long " | |
2507 "padding: %d in frame %uz", | |
2508 ctx->padding, ctx->rest); | |
2509 return NGX_ERROR; | |
2510 } | |
2511 | |
2512 state = sw_fragment; | |
2513 ctx->frame_state = state; | |
2514 } | |
2515 | |
2516 if (state == sw_fragment) { | |
2517 | |
2518 rc = ngx_http_grpc_parse_fragment(r, ctx, b); | |
2519 | |
2520 if (rc == NGX_AGAIN) { | |
2521 return NGX_AGAIN; | |
2522 } | |
2523 | |
2524 if (rc == NGX_ERROR) { | |
2525 return NGX_ERROR; | |
2526 } | |
2527 | |
2528 if (rc == NGX_OK) { | |
2529 return NGX_OK; | |
2530 } | |
2531 | |
2532 /* rc == NGX_DONE */ | |
2533 | |
2534 state = sw_padding; | |
2535 ctx->frame_state = state; | |
2536 } | |
2537 | |
2538 if (state == sw_padding) { | |
2539 | |
2540 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2541 | |
2542 ctx->rest -= b->last - b->pos; | |
2543 b->pos = b->last; | |
2544 | |
2545 return NGX_AGAIN; | |
2546 } | |
2547 | |
2548 b->pos += ctx->rest; | |
2549 ctx->rest = 0; | |
2550 | |
2551 ctx->state = ngx_http_grpc_st_start; | |
2552 | |
2553 if (ctx->flags & NGX_HTTP_V2_END_HEADERS_FLAG) { | |
2554 | |
2555 if (ctx->fragment_state) { | |
2556 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2557 "upstream sent truncated http2 header"); | |
2558 return NGX_ERROR; | |
2559 } | |
2560 | |
2561 ctx->parsing_headers = 0; | |
2562 | |
2563 return NGX_HTTP_PARSE_HEADER_DONE; | |
2564 } | |
2565 | |
2566 return NGX_AGAIN; | |
2567 } | |
2568 | |
2569 /* unreachable */ | |
2570 | |
2571 return NGX_ERROR; | |
2572 } | |
2573 | |
2574 | |
2575 static ngx_int_t | |
2576 ngx_http_grpc_parse_fragment(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2577 ngx_buf_t *b) | |
2578 { | |
2579 u_char ch, *p, *last; | |
2580 size_t size; | |
2581 ngx_uint_t index, size_update; | |
2582 enum { | |
2583 sw_start = 0, | |
2584 sw_index, | |
2585 sw_name_length, | |
2586 sw_name_length_2, | |
2587 sw_name_length_3, | |
2588 sw_name_length_4, | |
2589 sw_name, | |
2590 sw_name_bytes, | |
2591 sw_value_length, | |
2592 sw_value_length_2, | |
2593 sw_value_length_3, | |
2594 sw_value_length_4, | |
2595 sw_value, | |
2596 sw_value_bytes | |
2597 } state; | |
2598 | |
2599 /* header block fragment */ | |
2600 | |
2601 #if 0 | |
2602 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2603 "grpc header fragment %p:%p rest:%uz", | |
2604 b->pos, b->last, ctx->rest); | |
2605 #endif | |
2606 | |
2607 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
2608 last = b->last; | |
2609 | |
2610 } else { | |
2611 last = b->pos + ctx->rest - ctx->padding; | |
2612 } | |
2613 | |
2614 state = ctx->fragment_state; | |
2615 | |
2616 for (p = b->pos; p < last; p++) { | |
2617 ch = *p; | |
2618 | |
2619 #if 0 | |
2620 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2621 "grpc header byte: %02Xd s:%d", ch, state); | |
2622 #endif | |
2623 | |
2624 switch (state) { | |
2625 | |
2626 case sw_start: | |
2627 ctx->index = 0; | |
2628 | |
2629 if ((ch & 0x80) == 0x80) { | |
2630 /* | |
2631 * indexed header: | |
2632 * | |
2633 * 0 1 2 3 4 5 6 7 | |
2634 * +---+---+---+---+---+---+---+---+ | |
2635 * | 1 | Index (7+) | | |
2636 * +---+---------------------------+ | |
2637 */ | |
2638 | |
2639 index = ch & ~0x80; | |
2640 | |
2641 if (index == 0 || index > 61) { | |
2642 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2643 "upstream sent invalid http2 " | |
2644 "table index: %ui", index); | |
2645 return NGX_ERROR; | |
2646 } | |
2647 | |
2648 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2649 "grpc indexed header: %ui", index); | |
2650 | |
2651 ctx->index = index; | |
2652 ctx->literal = 0; | |
2653 | |
2654 goto done; | |
2655 | |
2656 } else if ((ch & 0xc0) == 0x40) { | |
2657 /* | |
2658 * literal header with incremental indexing: | |
2659 * | |
2660 * 0 1 2 3 4 5 6 7 | |
2661 * +---+---+---+---+---+---+---+---+ | |
2662 * | 0 | 1 | Index (6+) | | |
2663 * +---+---+-----------------------+ | |
2664 * | H | Value Length (7+) | | |
2665 * +---+---------------------------+ | |
2666 * | Value String (Length octets) | | |
2667 * +-------------------------------+ | |
2668 * | |
2669 * 0 1 2 3 4 5 6 7 | |
2670 * +---+---+---+---+---+---+---+---+ | |
2671 * | 0 | 1 | 0 | | |
2672 * +---+---+-----------------------+ | |
2673 * | H | Name Length (7+) | | |
2674 * +---+---------------------------+ | |
2675 * | Name String (Length octets) | | |
2676 * +---+---------------------------+ | |
2677 * | H | Value Length (7+) | | |
2678 * +---+---------------------------+ | |
2679 * | Value String (Length octets) | | |
2680 * +-------------------------------+ | |
2681 */ | |
2682 | |
2683 index = ch & ~0xc0; | |
2684 | |
2685 if (index > 61) { | |
2686 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2687 "upstream sent invalid http2 " | |
2688 "table index: %ui", index); | |
2689 return NGX_ERROR; | |
2690 } | |
2691 | |
2692 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2693 "grpc literal header: %ui", index); | |
2694 | |
2695 if (index == 0) { | |
2696 state = sw_name_length; | |
2697 break; | |
2698 } | |
2699 | |
2700 ctx->index = index; | |
2701 ctx->literal = 1; | |
2702 | |
2703 state = sw_value_length; | |
2704 break; | |
2705 | |
2706 } else if ((ch & 0xe0) == 0x20) { | |
2707 /* | |
2708 * dynamic table size update: | |
2709 * | |
2710 * 0 1 2 3 4 5 6 7 | |
2711 * +---+---+---+---+---+---+---+---+ | |
2712 * | 0 | 0 | 1 | Max size (5+) | | |
2713 * +---+---------------------------+ | |
2714 */ | |
2715 | |
2716 size_update = ch & ~0xe0; | |
2717 | |
2718 if (size_update > 0) { | |
2719 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2720 "upstream sent invalid http2 " | |
2721 "dynamic table size update: %ui", | |
2722 size_update); | |
2723 return NGX_ERROR; | |
2724 } | |
2725 | |
2726 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2727 "grpc table size update: %ui", size_update); | |
2728 | |
2729 break; | |
2730 | |
2731 } else if ((ch & 0xf0) == 0x10) { | |
2732 /* | |
2733 * literal header field never indexed: | |
2734 * | |
2735 * 0 1 2 3 4 5 6 7 | |
2736 * +---+---+---+---+---+---+---+---+ | |
2737 * | 0 | 0 | 0 | 1 | Index (4+) | | |
2738 * +---+---+-----------------------+ | |
2739 * | H | Value Length (7+) | | |
2740 * +---+---------------------------+ | |
2741 * | Value String (Length octets) | | |
2742 * +-------------------------------+ | |
2743 * | |
2744 * 0 1 2 3 4 5 6 7 | |
2745 * +---+---+---+---+---+---+---+---+ | |
2746 * | 0 | 0 | 0 | 1 | 0 | | |
2747 * +---+---+-----------------------+ | |
2748 * | H | Name Length (7+) | | |
2749 * +---+---------------------------+ | |
2750 * | Name String (Length octets) | | |
2751 * +---+---------------------------+ | |
2752 * | H | Value Length (7+) | | |
2753 * +---+---------------------------+ | |
2754 * | Value String (Length octets) | | |
2755 * +-------------------------------+ | |
2756 */ | |
2757 | |
2758 index = ch & ~0xf0; | |
2759 | |
2760 if (index == 0x0f) { | |
2761 ctx->index = index; | |
2762 ctx->literal = 1; | |
2763 state = sw_index; | |
2764 break; | |
2765 } | |
2766 | |
2767 if (index == 0) { | |
2768 state = sw_name_length; | |
2769 break; | |
2770 } | |
2771 | |
2772 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2773 "grpc literal header never indexed: %ui", | |
2774 index); | |
2775 | |
2776 ctx->index = index; | |
2777 ctx->literal = 1; | |
2778 | |
2779 state = sw_value_length; | |
2780 break; | |
2781 | |
2782 } else if ((ch & 0xf0) == 0x00) { | |
2783 /* | |
2784 * literal header field without indexing: | |
2785 * | |
2786 * 0 1 2 3 4 5 6 7 | |
2787 * +---+---+---+---+---+---+---+---+ | |
2788 * | 0 | 0 | 0 | 0 | Index (4+) | | |
2789 * +---+---+-----------------------+ | |
2790 * | H | Value Length (7+) | | |
2791 * +---+---------------------------+ | |
2792 * | Value String (Length octets) | | |
2793 * +-------------------------------+ | |
2794 * | |
2795 * 0 1 2 3 4 5 6 7 | |
2796 * +---+---+---+---+---+---+---+---+ | |
2797 * | 0 | 0 | 0 | 0 | 0 | | |
2798 * +---+---+-----------------------+ | |
2799 * | H | Name Length (7+) | | |
2800 * +---+---------------------------+ | |
2801 * | Name String (Length octets) | | |
2802 * +---+---------------------------+ | |
2803 * | H | Value Length (7+) | | |
2804 * +---+---------------------------+ | |
2805 * | Value String (Length octets) | | |
2806 * +-------------------------------+ | |
2807 */ | |
2808 | |
2809 index = ch & ~0xf0; | |
2810 | |
2811 if (index == 0x0f) { | |
2812 ctx->index = index; | |
2813 ctx->literal = 1; | |
2814 state = sw_index; | |
2815 break; | |
2816 } | |
2817 | |
2818 if (index == 0) { | |
2819 state = sw_name_length; | |
2820 break; | |
2821 } | |
2822 | |
2823 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2824 "grpc literal header without indexing: %ui", | |
2825 index); | |
2826 | |
2827 ctx->index = index; | |
2828 ctx->literal = 1; | |
2829 | |
2830 state = sw_value_length; | |
2831 break; | |
2832 } | |
2833 | |
2834 /* not reached */ | |
2835 | |
2836 return NGX_ERROR; | |
2837 | |
2838 case sw_index: | |
2839 ctx->index = ctx->index + (ch & ~0x80); | |
2840 | |
2841 if (ch & 0x80) { | |
2842 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2843 "upstream sent http2 table index " | |
2844 "with continuation flag"); | |
2845 return NGX_ERROR; | |
2846 } | |
2847 | |
2848 if (ctx->index > 61) { | |
2849 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2850 "upstream sent invalid http2 " | |
2851 "table index: %ui", ctx->index); | |
2852 return NGX_ERROR; | |
2853 } | |
2854 | |
2855 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2856 "grpc header index: %ui", ctx->index); | |
2857 | |
2858 state = sw_value_length; | |
2859 break; | |
2860 | |
2861 case sw_name_length: | |
2862 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
2863 ctx->field_length = ch & ~0x80; | |
2864 | |
2865 if (ctx->field_length == 0x7f) { | |
2866 state = sw_name_length_2; | |
2867 break; | |
2868 } | |
2869 | |
2870 if (ctx->field_length == 0) { | |
2871 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2872 "upstream sent zero http2 " | |
2873 "header name length"); | |
2874 return NGX_ERROR; | |
2875 } | |
2876 | |
2877 state = sw_name; | |
2878 break; | |
2879 | |
2880 case sw_name_length_2: | |
2881 ctx->field_length += ch & ~0x80; | |
2882 | |
2883 if (ch & 0x80) { | |
2884 state = sw_name_length_3; | |
2885 break; | |
2886 } | |
2887 | |
2888 state = sw_name; | |
2889 break; | |
2890 | |
2891 case sw_name_length_3: | |
2892 ctx->field_length += (ch & ~0x80) << 7; | |
2893 | |
2894 if (ch & 0x80) { | |
2895 state = sw_name_length_4; | |
2896 break; | |
2897 } | |
2898 | |
2899 state = sw_name; | |
2900 break; | |
2901 | |
2902 case sw_name_length_4: | |
2903 ctx->field_length += (ch & ~0x80) << 14; | |
2904 | |
2905 if (ch & 0x80) { | |
2906 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2907 "upstream sent too large http2 " | |
2908 "header name length"); | |
2909 return NGX_ERROR; | |
2910 } | |
2911 | |
2912 state = sw_name; | |
2913 break; | |
2914 | |
2915 case sw_name: | |
2916 ctx->name.len = ctx->field_huffman ? | |
2917 ctx->field_length * 8 / 5 : ctx->field_length; | |
2918 | |
2919 ctx->name.data = ngx_pnalloc(r->pool, ctx->name.len + 1); | |
2920 if (ctx->name.data == NULL) { | |
2921 return NGX_ERROR; | |
2922 } | |
2923 | |
2924 ctx->field_end = ctx->name.data; | |
2925 ctx->field_rest = ctx->field_length; | |
2926 ctx->field_state = 0; | |
2927 | |
2928 state = sw_name_bytes; | |
2929 | |
2930 /* fall through */ | |
2931 | |
2932 case sw_name_bytes: | |
2933 | |
2934 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2935 "grpc name: len:%uz h:%d last:%uz, rest:%uz", | |
2936 ctx->field_length, | |
2937 ctx->field_huffman, | |
2938 last - p, | |
2939 ctx->rest - (p - b->pos)); | |
2940 | |
2941 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
2942 ctx->field_rest -= size; | |
2943 | |
2944 if (ctx->field_huffman) { | |
2945 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
2946 &ctx->field_end, | |
2947 ctx->field_rest == 0, | |
2948 r->connection->log) | |
2949 != NGX_OK) | |
2950 { | |
2951 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2952 "upstream sent invalid encoded header"); | |
2953 return NGX_ERROR; | |
2954 } | |
2955 | |
2956 ctx->name.len = ctx->field_end - ctx->name.data; | |
2957 ctx->name.data[ctx->name.len] = '\0'; | |
2958 | |
2959 } else { | |
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
2960 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
7233 | 2961 ctx->name.data[ctx->name.len] = '\0'; |
2962 } | |
2963 | |
2964 p += size - 1; | |
2965 | |
2966 if (ctx->field_rest == 0) { | |
2967 state = sw_value_length; | |
2968 } | |
2969 | |
2970 break; | |
2971 | |
2972 case sw_value_length: | |
2973 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
2974 ctx->field_length = ch & ~0x80; | |
2975 | |
2976 if (ctx->field_length == 0x7f) { | |
2977 state = sw_value_length_2; | |
2978 break; | |
2979 } | |
2980 | |
2981 if (ctx->field_length == 0) { | |
2982 ngx_str_set(&ctx->value, ""); | |
2983 goto done; | |
2984 } | |
2985 | |
2986 state = sw_value; | |
2987 break; | |
2988 | |
2989 case sw_value_length_2: | |
2990 ctx->field_length += ch & ~0x80; | |
2991 | |
2992 if (ch & 0x80) { | |
2993 state = sw_value_length_3; | |
2994 break; | |
2995 } | |
2996 | |
2997 state = sw_value; | |
2998 break; | |
2999 | |
3000 case sw_value_length_3: | |
3001 ctx->field_length += (ch & ~0x80) << 7; | |
3002 | |
3003 if (ch & 0x80) { | |
3004 state = sw_value_length_4; | |
3005 break; | |
3006 } | |
3007 | |
3008 state = sw_value; | |
3009 break; | |
3010 | |
3011 case sw_value_length_4: | |
3012 ctx->field_length += (ch & ~0x80) << 14; | |
3013 | |
3014 if (ch & 0x80) { | |
3015 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3016 "upstream sent too large http2 " | |
3017 "header value length"); | |
3018 return NGX_ERROR; | |
3019 } | |
3020 | |
3021 state = sw_value; | |
3022 break; | |
3023 | |
3024 case sw_value: | |
3025 ctx->value.len = ctx->field_huffman ? | |
3026 ctx->field_length * 8 / 5 : ctx->field_length; | |
3027 | |
3028 ctx->value.data = ngx_pnalloc(r->pool, ctx->value.len + 1); | |
3029 if (ctx->value.data == NULL) { | |
3030 return NGX_ERROR; | |
3031 } | |
3032 | |
3033 ctx->field_end = ctx->value.data; | |
3034 ctx->field_rest = ctx->field_length; | |
3035 ctx->field_state = 0; | |
3036 | |
3037 state = sw_value_bytes; | |
3038 | |
3039 /* fall through */ | |
3040 | |
3041 case sw_value_bytes: | |
3042 | |
3043 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3044 "grpc value: len:%uz h:%d last:%uz, rest:%uz", | |
3045 ctx->field_length, | |
3046 ctx->field_huffman, | |
3047 last - p, | |
3048 ctx->rest - (p - b->pos)); | |
3049 | |
3050 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
3051 ctx->field_rest -= size; | |
3052 | |
3053 if (ctx->field_huffman) { | |
3054 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
3055 &ctx->field_end, | |
3056 ctx->field_rest == 0, | |
3057 r->connection->log) | |
3058 != NGX_OK) | |
3059 { | |
3060 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3061 "upstream sent invalid encoded header"); | |
3062 return NGX_ERROR; | |
3063 } | |
3064 | |
3065 ctx->value.len = ctx->field_end - ctx->value.data; | |
3066 ctx->value.data[ctx->value.len] = '\0'; | |
3067 | |
3068 } else { | |
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3069 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
7233 | 3070 ctx->value.data[ctx->value.len] = '\0'; |
3071 } | |
3072 | |
3073 p += size - 1; | |
3074 | |
3075 if (ctx->field_rest == 0) { | |
3076 goto done; | |
3077 } | |
3078 | |
3079 break; | |
3080 } | |
3081 | |
3082 continue; | |
3083 | |
3084 done: | |
3085 | |
3086 p++; | |
3087 ctx->rest -= p - b->pos; | |
3088 ctx->fragment_state = sw_start; | |
3089 b->pos = p; | |
3090 | |
3091 if (ctx->index) { | |
3092 ctx->name = *ngx_http_v2_get_static_name(ctx->index); | |
3093 } | |
3094 | |
3095 if (ctx->index && !ctx->literal) { | |
3096 ctx->value = *ngx_http_v2_get_static_value(ctx->index); | |
3097 } | |
3098 | |
3099 if (!ctx->index) { | |
3100 if (ngx_http_grpc_validate_header_name(r, &ctx->name) != NGX_OK) { | |
3101 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3102 "upstream sent invalid header: \"%V: %V\"", | |
3103 &ctx->name, &ctx->value); | |
3104 return NGX_ERROR; | |
3105 } | |
3106 } | |
3107 | |
3108 if (!ctx->index || ctx->literal) { | |
3109 if (ngx_http_grpc_validate_header_value(r, &ctx->value) != NGX_OK) { | |
3110 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3111 "upstream sent invalid header: \"%V: %V\"", | |
3112 &ctx->name, &ctx->value); | |
3113 return NGX_ERROR; | |
3114 } | |
3115 } | |
3116 | |
3117 return NGX_OK; | |
3118 } | |
3119 | |
3120 ctx->rest -= p - b->pos; | |
3121 ctx->fragment_state = state; | |
3122 b->pos = p; | |
3123 | |
3124 if (ctx->rest > ctx->padding) { | |
3125 return NGX_AGAIN; | |
3126 } | |
3127 | |
3128 return NGX_DONE; | |
3129 } | |
3130 | |
3131 | |
3132 static ngx_int_t | |
3133 ngx_http_grpc_validate_header_name(ngx_http_request_t *r, ngx_str_t *s) | |
3134 { | |
3135 u_char ch; | |
3136 ngx_uint_t i; | |
3137 | |
3138 for (i = 0; i < s->len; i++) { | |
3139 ch = s->data[i]; | |
3140 | |
3141 if (ch == ':' && i > 0) { | |
3142 return NGX_ERROR; | |
3143 } | |
3144 | |
3145 if (ch >= 'A' && ch <= 'Z') { | |
3146 return NGX_ERROR; | |
3147 } | |
3148 | |
3149 if (ch == '\0' || ch == CR || ch == LF) { | |
3150 return NGX_ERROR; | |
3151 } | |
3152 } | |
3153 | |
3154 return NGX_OK; | |
3155 } | |
3156 | |
3157 | |
3158 static ngx_int_t | |
3159 ngx_http_grpc_validate_header_value(ngx_http_request_t *r, ngx_str_t *s) | |
3160 { | |
3161 u_char ch; | |
3162 ngx_uint_t i; | |
3163 | |
3164 for (i = 0; i < s->len; i++) { | |
3165 ch = s->data[i]; | |
3166 | |
3167 if (ch == '\0' || ch == CR || ch == LF) { | |
3168 return NGX_ERROR; | |
3169 } | |
3170 } | |
3171 | |
3172 return NGX_OK; | |
3173 } | |
3174 | |
3175 | |
3176 static ngx_int_t | |
3177 ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3178 ngx_buf_t *b) | |
3179 { | |
3180 u_char ch, *p, *last; | |
3181 enum { | |
3182 sw_start = 0, | |
3183 sw_error_2, | |
3184 sw_error_3, | |
3185 sw_error_4 | |
3186 } state; | |
3187 | |
3188 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3189 last = b->last; | |
3190 | |
3191 } else { | |
3192 last = b->pos + ctx->rest; | |
3193 } | |
3194 | |
3195 state = ctx->frame_state; | |
3196 | |
3197 if (state == sw_start) { | |
3198 if (ctx->rest != 4) { | |
3199 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3200 "upstream sent rst stream frame " | |
3201 "with invalid length: %uz", | |
3202 ctx->rest); | |
3203 return NGX_ERROR; | |
3204 } | |
3205 } | |
3206 | |
3207 for (p = b->pos; p < last; p++) { | |
3208 ch = *p; | |
3209 | |
3210 #if 0 | |
3211 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3212 "grpc rst byte: %02Xd s:%d", ch, state); | |
3213 #endif | |
3214 | |
3215 switch (state) { | |
3216 | |
3217 case sw_start: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3218 ctx->error = (ngx_uint_t) ch << 24; |
7233 | 3219 state = sw_error_2; |
3220 break; | |
3221 | |
3222 case sw_error_2: | |
3223 ctx->error |= ch << 16; | |
3224 state = sw_error_3; | |
3225 break; | |
3226 | |
3227 case sw_error_3: | |
3228 ctx->error |= ch << 8; | |
3229 state = sw_error_4; | |
3230 break; | |
3231 | |
3232 case sw_error_4: | |
3233 ctx->error |= ch; | |
3234 state = sw_start; | |
3235 | |
3236 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3237 "grpc error: %ui", ctx->error); | |
3238 | |
3239 break; | |
3240 } | |
3241 } | |
3242 | |
3243 ctx->rest -= p - b->pos; | |
3244 ctx->frame_state = state; | |
3245 b->pos = p; | |
3246 | |
3247 if (ctx->rest > 0) { | |
3248 return NGX_AGAIN; | |
3249 } | |
3250 | |
3251 return NGX_OK; | |
3252 } | |
3253 | |
3254 | |
3255 static ngx_int_t | |
3256 ngx_http_grpc_parse_goaway(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3257 ngx_buf_t *b) | |
3258 { | |
3259 u_char ch, *p, *last; | |
3260 enum { | |
3261 sw_start = 0, | |
3262 sw_last_stream_id_2, | |
3263 sw_last_stream_id_3, | |
3264 sw_last_stream_id_4, | |
3265 sw_error, | |
3266 sw_error_2, | |
3267 sw_error_3, | |
3268 sw_error_4, | |
3269 sw_debug | |
3270 } state; | |
3271 | |
3272 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3273 last = b->last; | |
3274 | |
3275 } else { | |
3276 last = b->pos + ctx->rest; | |
3277 } | |
3278 | |
3279 state = ctx->frame_state; | |
3280 | |
3281 if (state == sw_start) { | |
3282 | |
3283 if (ctx->stream_id) { | |
3284 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3285 "upstream sent goaway frame " | |
3286 "with non-zero stream id: %ui", | |
3287 ctx->stream_id); | |
3288 return NGX_ERROR; | |
3289 } | |
3290 | |
3291 if (ctx->rest < 8) { | |
3292 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3293 "upstream sent goaway frame " | |
3294 "with invalid length: %uz", | |
3295 ctx->rest); | |
3296 return NGX_ERROR; | |
3297 } | |
3298 } | |
3299 | |
3300 for (p = b->pos; p < last; p++) { | |
3301 ch = *p; | |
3302 | |
3303 #if 0 | |
3304 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3305 "grpc goaway byte: %02Xd s:%d", ch, state); | |
3306 #endif | |
3307 | |
3308 switch (state) { | |
3309 | |
3310 case sw_start: | |
3311 ctx->stream_id = (ch & 0x7f) << 24; | |
3312 state = sw_last_stream_id_2; | |
3313 break; | |
3314 | |
3315 case sw_last_stream_id_2: | |
3316 ctx->stream_id |= ch << 16; | |
3317 state = sw_last_stream_id_3; | |
3318 break; | |
3319 | |
3320 case sw_last_stream_id_3: | |
3321 ctx->stream_id |= ch << 8; | |
3322 state = sw_last_stream_id_4; | |
3323 break; | |
3324 | |
3325 case sw_last_stream_id_4: | |
3326 ctx->stream_id |= ch; | |
3327 state = sw_error; | |
3328 break; | |
3329 | |
3330 case sw_error: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3331 ctx->error = (ngx_uint_t) ch << 24; |
7233 | 3332 state = sw_error_2; |
3333 break; | |
3334 | |
3335 case sw_error_2: | |
3336 ctx->error |= ch << 16; | |
3337 state = sw_error_3; | |
3338 break; | |
3339 | |
3340 case sw_error_3: | |
3341 ctx->error |= ch << 8; | |
3342 state = sw_error_4; | |
3343 break; | |
3344 | |
3345 case sw_error_4: | |
3346 ctx->error |= ch; | |
3347 state = sw_debug; | |
3348 break; | |
3349 | |
3350 case sw_debug: | |
3351 break; | |
3352 } | |
3353 } | |
3354 | |
3355 ctx->rest -= p - b->pos; | |
3356 ctx->frame_state = state; | |
3357 b->pos = p; | |
3358 | |
3359 if (ctx->rest > 0) { | |
3360 return NGX_AGAIN; | |
3361 } | |
3362 | |
3363 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3364 "grpc goaway: %ui, stream %ui", | |
3365 ctx->error, ctx->stream_id); | |
3366 | |
3367 ctx->state = ngx_http_grpc_st_start; | |
3368 | |
3369 return NGX_OK; | |
3370 } | |
3371 | |
3372 | |
3373 static ngx_int_t | |
3374 ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
3375 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
3376 { | |
3377 u_char ch, *p, *last; | |
3378 enum { | |
3379 sw_start = 0, | |
3380 sw_size_2, | |
3381 sw_size_3, | |
3382 sw_size_4 | |
3383 } state; | |
3384 | |
3385 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3386 last = b->last; | |
3387 | |
3388 } else { | |
3389 last = b->pos + ctx->rest; | |
3390 } | |
3391 | |
3392 state = ctx->frame_state; | |
3393 | |
3394 if (state == sw_start) { | |
3395 if (ctx->rest != 4) { | |
3396 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3397 "upstream sent window update frame " | |
3398 "with invalid length: %uz", | |
3399 ctx->rest); | |
3400 return NGX_ERROR; | |
3401 } | |
3402 } | |
3403 | |
3404 for (p = b->pos; p < last; p++) { | |
3405 ch = *p; | |
3406 | |
3407 #if 0 | |
3408 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3409 "grpc window update byte: %02Xd s:%d", ch, state); | |
3410 #endif | |
3411 | |
3412 switch (state) { | |
3413 | |
3414 case sw_start: | |
3415 ctx->window_update = (ch & 0x7f) << 24; | |
3416 state = sw_size_2; | |
3417 break; | |
3418 | |
3419 case sw_size_2: | |
3420 ctx->window_update |= ch << 16; | |
3421 state = sw_size_3; | |
3422 break; | |
3423 | |
3424 case sw_size_3: | |
3425 ctx->window_update |= ch << 8; | |
3426 state = sw_size_4; | |
3427 break; | |
3428 | |
3429 case sw_size_4: | |
3430 ctx->window_update |= ch; | |
3431 state = sw_start; | |
3432 break; | |
3433 } | |
3434 } | |
3435 | |
3436 ctx->rest -= p - b->pos; | |
3437 ctx->frame_state = state; | |
3438 b->pos = p; | |
3439 | |
3440 if (ctx->rest > 0) { | |
3441 return NGX_AGAIN; | |
3442 } | |
3443 | |
3444 ctx->state = ngx_http_grpc_st_start; | |
3445 | |
3446 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3447 "grpc window update: %ui", ctx->window_update); | |
3448 | |
3449 if (ctx->stream_id) { | |
3450 | |
3451 if (ctx->window_update > (size_t) NGX_HTTP_V2_MAX_WINDOW | |
3452 - ctx->send_window) | |
3453 { | |
3454 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3455 "upstream sent too large window update"); | |
3456 return NGX_ERROR; | |
3457 } | |
3458 | |
3459 ctx->send_window += ctx->window_update; | |
3460 | |
3461 } else { | |
3462 | |
3463 if (ctx->window_update > NGX_HTTP_V2_MAX_WINDOW | |
3464 - ctx->connection->send_window) | |
3465 { | |
3466 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3467 "upstream sent too large window update"); | |
3468 return NGX_ERROR; | |
3469 } | |
3470 | |
3471 ctx->connection->send_window += ctx->window_update; | |
3472 } | |
3473 | |
3474 return NGX_OK; | |
3475 } | |
3476 | |
3477 | |
3478 static ngx_int_t | |
3479 ngx_http_grpc_parse_settings(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3480 ngx_buf_t *b) | |
3481 { | |
3482 u_char ch, *p, *last; | |
3483 ssize_t window_update; | |
3484 enum { | |
3485 sw_start = 0, | |
3486 sw_id, | |
3487 sw_id_2, | |
3488 sw_value, | |
3489 sw_value_2, | |
3490 sw_value_3, | |
3491 sw_value_4 | |
3492 } state; | |
3493 | |
3494 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3495 last = b->last; | |
3496 | |
3497 } else { | |
3498 last = b->pos + ctx->rest; | |
3499 } | |
3500 | |
3501 state = ctx->frame_state; | |
3502 | |
3503 if (state == sw_start) { | |
3504 | |
3505 if (ctx->stream_id) { | |
3506 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3507 "upstream sent settings frame " | |
3508 "with non-zero stream id: %ui", | |
3509 ctx->stream_id); | |
3510 return NGX_ERROR; | |
3511 } | |
3512 | |
3513 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
3514 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3515 "grpc settings ack"); | |
3516 | |
3517 if (ctx->rest != 0) { | |
3518 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3519 "upstream sent settings frame " | |
3520 "with ack flag and non-zero length: %uz", | |
3521 ctx->rest); | |
3522 return NGX_ERROR; | |
3523 } | |
3524 | |
3525 ctx->state = ngx_http_grpc_st_start; | |
3526 | |
3527 return NGX_OK; | |
3528 } | |
3529 | |
3530 if (ctx->rest % 6 != 0) { | |
3531 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3532 "upstream sent settings frame " | |
3533 "with invalid length: %uz", | |
3534 ctx->rest); | |
3535 return NGX_ERROR; | |
3536 } | |
7387
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3537 |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3538 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
|
3539 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
|
3540 "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
|
3541 return NGX_ERROR; |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3542 } |
7233 | 3543 } |
3544 | |
3545 for (p = b->pos; p < last; p++) { | |
3546 ch = *p; | |
3547 | |
3548 #if 0 | |
3549 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3550 "grpc settings byte: %02Xd s:%d", ch, state); | |
3551 #endif | |
3552 | |
3553 switch (state) { | |
3554 | |
3555 case sw_start: | |
3556 case sw_id: | |
3557 ctx->setting_id = ch << 8; | |
3558 state = sw_id_2; | |
3559 break; | |
3560 | |
3561 case sw_id_2: | |
3562 ctx->setting_id |= ch; | |
3563 state = sw_value; | |
3564 break; | |
3565 | |
3566 case sw_value: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3567 ctx->setting_value = (ngx_uint_t) ch << 24; |
7233 | 3568 state = sw_value_2; |
3569 break; | |
3570 | |
3571 case sw_value_2: | |
3572 ctx->setting_value |= ch << 16; | |
3573 state = sw_value_3; | |
3574 break; | |
3575 | |
3576 case sw_value_3: | |
3577 ctx->setting_value |= ch << 8; | |
3578 state = sw_value_4; | |
3579 break; | |
3580 | |
3581 case sw_value_4: | |
3582 ctx->setting_value |= ch; | |
3583 state = sw_id; | |
3584 | |
3585 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3586 "grpc setting: %ui %ui", | |
3587 ctx->setting_id, ctx->setting_value); | |
3588 | |
3589 /* | |
3590 * The following settings are defined by the protocol: | |
3591 * | |
3592 * SETTINGS_HEADER_TABLE_SIZE, SETTINGS_ENABLE_PUSH, | |
3593 * SETTINGS_MAX_CONCURRENT_STREAMS, SETTINGS_INITIAL_WINDOW_SIZE, | |
3594 * SETTINGS_MAX_FRAME_SIZE, SETTINGS_MAX_HEADER_LIST_SIZE | |
3595 * | |
3596 * Only SETTINGS_INITIAL_WINDOW_SIZE seems to be needed in | |
3597 * a simple client. | |
3598 */ | |
3599 | |
3600 if (ctx->setting_id == 0x04) { | |
3601 /* SETTINGS_INITIAL_WINDOW_SIZE */ | |
3602 | |
3603 if (ctx->setting_value > NGX_HTTP_V2_MAX_WINDOW) { | |
3604 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3605 "upstream sent settings frame " | |
3606 "with too large initial window size: %ui", | |
3607 ctx->setting_value); | |
3608 return NGX_ERROR; | |
3609 } | |
3610 | |
3611 window_update = ctx->setting_value | |
3612 - ctx->connection->init_window; | |
3613 ctx->connection->init_window = ctx->setting_value; | |
3614 | |
3615 if (ctx->send_window > 0 | |
3616 && window_update > (ssize_t) NGX_HTTP_V2_MAX_WINDOW | |
3617 - ctx->send_window) | |
3618 { | |
3619 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3620 "upstream sent settings frame " | |
3621 "with too large initial window size: %ui", | |
3622 ctx->setting_value); | |
3623 return NGX_ERROR; | |
3624 } | |
3625 | |
3626 ctx->send_window += window_update; | |
3627 } | |
3628 | |
3629 break; | |
3630 } | |
3631 } | |
3632 | |
3633 ctx->rest -= p - b->pos; | |
3634 ctx->frame_state = state; | |
3635 b->pos = p; | |
3636 | |
3637 if (ctx->rest > 0) { | |
3638 return NGX_AGAIN; | |
3639 } | |
3640 | |
3641 ctx->state = ngx_http_grpc_st_start; | |
3642 | |
3643 return ngx_http_grpc_send_settings_ack(r, ctx); | |
3644 } | |
3645 | |
3646 | |
3647 static ngx_int_t | |
3648 ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
3649 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
3650 { | |
3651 u_char ch, *p, *last; | |
3652 enum { | |
3653 sw_start = 0, | |
3654 sw_data_2, | |
3655 sw_data_3, | |
3656 sw_data_4, | |
3657 sw_data_5, | |
3658 sw_data_6, | |
3659 sw_data_7, | |
3660 sw_data_8 | |
3661 } state; | |
3662 | |
3663 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3664 last = b->last; | |
3665 | |
3666 } else { | |
3667 last = b->pos + ctx->rest; | |
3668 } | |
3669 | |
3670 state = ctx->frame_state; | |
3671 | |
3672 if (state == sw_start) { | |
3673 | |
3674 if (ctx->stream_id) { | |
3675 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3676 "upstream sent ping frame " | |
3677 "with non-zero stream id: %ui", | |
3678 ctx->stream_id); | |
3679 return NGX_ERROR; | |
3680 } | |
3681 | |
3682 if (ctx->rest != 8) { | |
3683 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3684 "upstream sent ping frame " | |
3685 "with invalid length: %uz", | |
3686 ctx->rest); | |
3687 return NGX_ERROR; | |
3688 } | |
3689 | |
3690 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
3691 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3692 "upstream sent ping frame with ack flag"); | |
3693 return NGX_ERROR; | |
3694 } | |
7387
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3695 |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3696 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
|
3697 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
|
3698 "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
|
3699 return NGX_ERROR; |
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
3700 } |
7233 | 3701 } |
3702 | |
3703 for (p = b->pos; p < last; p++) { | |
3704 ch = *p; | |
3705 | |
3706 #if 0 | |
3707 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3708 "grpc ping byte: %02Xd s:%d", ch, state); | |
3709 #endif | |
3710 | |
3711 if (state < sw_data_8) { | |
3712 ctx->ping_data[state] = ch; | |
3713 state++; | |
3714 | |
3715 } else { | |
3716 ctx->ping_data[7] = ch; | |
3717 state = sw_start; | |
3718 | |
3719 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3720 "grpc ping"); | |
3721 } | |
3722 } | |
3723 | |
3724 ctx->rest -= p - b->pos; | |
3725 ctx->frame_state = state; | |
3726 b->pos = p; | |
3727 | |
3728 if (ctx->rest > 0) { | |
3729 return NGX_AGAIN; | |
3730 } | |
3731 | |
3732 ctx->state = ngx_http_grpc_st_start; | |
3733 | |
3734 return ngx_http_grpc_send_ping_ack(r, ctx); | |
3735 } | |
3736 | |
3737 | |
3738 static ngx_int_t | |
3739 ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3740 { | |
3741 ngx_chain_t *cl, **ll; | |
3742 ngx_http_grpc_frame_t *f; | |
3743 | |
3744 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3745 "grpc send settings ack"); | |
3746 | |
3747 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3748 ll = &cl->next; | |
3749 } | |
3750 | |
3751 cl = ngx_http_grpc_get_buf(r, ctx); | |
3752 if (cl == NULL) { | |
3753 return NGX_ERROR; | |
3754 } | |
3755 | |
3756 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3757 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3758 | |
3759 f->length_0 = 0; | |
3760 f->length_1 = 0; | |
3761 f->length_2 = 0; | |
3762 f->type = NGX_HTTP_V2_SETTINGS_FRAME; | |
3763 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
3764 f->stream_id_0 = 0; | |
3765 f->stream_id_1 = 0; | |
3766 f->stream_id_2 = 0; | |
3767 f->stream_id_3 = 0; | |
3768 | |
3769 *ll = cl; | |
3770 | |
3771 return NGX_OK; | |
3772 } | |
3773 | |
3774 | |
3775 static ngx_int_t | |
3776 ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3777 { | |
3778 ngx_chain_t *cl, **ll; | |
3779 ngx_http_grpc_frame_t *f; | |
3780 | |
3781 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3782 "grpc send ping ack"); | |
3783 | |
3784 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3785 ll = &cl->next; | |
3786 } | |
3787 | |
3788 cl = ngx_http_grpc_get_buf(r, ctx); | |
3789 if (cl == NULL) { | |
3790 return NGX_ERROR; | |
3791 } | |
3792 | |
3793 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3794 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3795 | |
3796 f->length_0 = 0; | |
3797 f->length_1 = 0; | |
3798 f->length_2 = 8; | |
3799 f->type = NGX_HTTP_V2_PING_FRAME; | |
3800 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
3801 f->stream_id_0 = 0; | |
3802 f->stream_id_1 = 0; | |
3803 f->stream_id_2 = 0; | |
3804 f->stream_id_3 = 0; | |
3805 | |
3806 cl->buf->last = ngx_copy(cl->buf->last, ctx->ping_data, 8); | |
3807 | |
3808 *ll = cl; | |
3809 | |
3810 return NGX_OK; | |
3811 } | |
3812 | |
3813 | |
3814 static ngx_int_t | |
3815 ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
3816 ngx_http_grpc_ctx_t *ctx) | |
3817 { | |
3818 size_t n; | |
3819 ngx_chain_t *cl, **ll; | |
3820 ngx_http_grpc_frame_t *f; | |
3821 | |
3822 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3823 "grpc send window update: %uz %uz", | |
3824 ctx->connection->recv_window, ctx->recv_window); | |
3825 | |
3826 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3827 ll = &cl->next; | |
3828 } | |
3829 | |
3830 cl = ngx_http_grpc_get_buf(r, ctx); | |
3831 if (cl == NULL) { | |
3832 return NGX_ERROR; | |
3833 } | |
3834 | |
3835 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3836 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3837 | |
3838 f->length_0 = 0; | |
3839 f->length_1 = 0; | |
3840 f->length_2 = 4; | |
3841 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
3842 f->flags = 0; | |
3843 f->stream_id_0 = 0; | |
3844 f->stream_id_1 = 0; | |
3845 f->stream_id_2 = 0; | |
3846 f->stream_id_3 = 0; | |
3847 | |
3848 n = NGX_HTTP_V2_MAX_WINDOW - ctx->connection->recv_window; | |
3849 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3850 | |
3851 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
3852 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
3853 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
3854 *cl->buf->last++ = (u_char) (n & 0xff); | |
3855 | |
3856 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3857 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3858 | |
3859 f->length_0 = 0; | |
3860 f->length_1 = 0; | |
3861 f->length_2 = 4; | |
3862 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
3863 f->flags = 0; | |
3864 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
3865 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
3866 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
3867 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
3868 | |
3869 n = NGX_HTTP_V2_MAX_WINDOW - ctx->recv_window; | |
3870 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3871 | |
3872 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
3873 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
3874 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
3875 *cl->buf->last++ = (u_char) (n & 0xff); | |
3876 | |
3877 *ll = cl; | |
3878 | |
3879 return NGX_OK; | |
3880 } | |
3881 | |
3882 | |
3883 static ngx_chain_t * | |
3884 ngx_http_grpc_get_buf(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3885 { | |
3886 ngx_buf_t *b; | |
3887 ngx_chain_t *cl; | |
3888 | |
3889 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
3890 if (cl == NULL) { | |
3891 return NULL; | |
3892 } | |
3893 | |
3894 b = cl->buf; | |
3895 | |
3896 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
3897 b->temporary = 1; | |
3898 b->flush = 1; | |
3899 | |
3900 if (b->start == NULL) { | |
3901 | |
3902 /* | |
3903 * each buffer is large enough to hold two window update | |
3904 * frames in a row | |
3905 */ | |
3906 | |
3907 b->start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8); | |
3908 if (b->start == NULL) { | |
3909 return NULL; | |
3910 } | |
3911 | |
3912 b->pos = b->start; | |
3913 b->last = b->start; | |
3914 | |
3915 b->end = b->start + 2 * sizeof(ngx_http_grpc_frame_t) + 8; | |
3916 } | |
3917 | |
3918 return cl; | |
3919 } | |
3920 | |
3921 | |
3922 static ngx_http_grpc_ctx_t * | |
3923 ngx_http_grpc_get_ctx(ngx_http_request_t *r) | |
3924 { | |
3925 ngx_http_grpc_ctx_t *ctx; | |
3926 ngx_http_upstream_t *u; | |
3927 | |
3928 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
3929 | |
3930 if (ctx->connection == NULL) { | |
3931 u = r->upstream; | |
3932 | |
3933 if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) { | |
3934 return NULL; | |
3935 } | |
3936 } | |
3937 | |
3938 return ctx; | |
3939 } | |
3940 | |
3941 | |
3942 static ngx_int_t | |
3943 ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
3944 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc) | |
3945 { | |
3946 ngx_connection_t *c; | |
3947 ngx_pool_cleanup_t *cln; | |
3948 | |
3949 c = pc->connection; | |
3950 | |
3951 if (pc->cached) { | |
3952 | |
3953 /* | |
3954 * for cached connections, connection data can be found | |
3955 * in the cleanup handler | |
3956 */ | |
3957 | |
3958 for (cln = c->pool->cleanup; cln; cln = cln->next) { | |
3959 if (cln->handler == ngx_http_grpc_cleanup) { | |
3960 ctx->connection = cln->data; | |
3961 break; | |
3962 } | |
3963 } | |
3964 | |
3965 if (ctx->connection == NULL) { | |
3966 ngx_log_error(NGX_LOG_ERR, c->log, 0, | |
3967 "no connection data found for " | |
3968 "keepalive http2 connection"); | |
3969 return NGX_ERROR; | |
3970 } | |
3971 | |
3972 ctx->send_window = ctx->connection->init_window; | |
3973 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3974 | |
3975 ctx->connection->last_stream_id += 2; | |
3976 ctx->id = ctx->connection->last_stream_id; | |
3977 | |
3978 return NGX_OK; | |
3979 } | |
3980 | |
3981 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t)); | |
3982 if (cln == NULL) { | |
3983 return NGX_ERROR; | |
3984 } | |
3985 | |
3986 cln->handler = ngx_http_grpc_cleanup; | |
3987 ctx->connection = cln->data; | |
3988 | |
3989 ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
3990 ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
3991 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3992 | |
3993 ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
3994 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3995 | |
3996 ctx->id = 1; | |
3997 ctx->connection->last_stream_id = 1; | |
3998 | |
3999 return NGX_OK; | |
4000 } | |
4001 | |
4002 | |
4003 static void | |
4004 ngx_http_grpc_cleanup(void *data) | |
4005 { | |
4006 #if 0 | |
4007 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
4008 "grpc cleanup"); | |
4009 #endif | |
4010 return; | |
4011 } | |
4012 | |
4013 | |
4014 static void | |
4015 ngx_http_grpc_abort_request(ngx_http_request_t *r) | |
4016 { | |
4017 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
4018 "abort grpc request"); | |
4019 return; | |
4020 } | |
4021 | |
4022 | |
4023 static void | |
4024 ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
4025 { | |
4026 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
4027 "finalize grpc request"); | |
4028 return; | |
4029 } | |
4030 | |
4031 | |
7234
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4032 static ngx_int_t |
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4033 ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r, |
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4034 ngx_http_variable_value_t *v, uintptr_t data) |
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|
4035 { |
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|
4036 ngx_table_elt_t *te; |
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4037 |
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4038 te = r->headers_in.te; |
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4039 |
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4040 if (te == NULL) { |
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4041 v->not_found = 1; |
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4042 return NGX_OK; |
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|
4043 } |
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|
4044 |
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|
4045 if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len, |
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4046 (u_char *) "trailers", 8 - 1) |
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4047 == NULL) |
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changeset
|
4048 { |
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|
4049 v->not_found = 1; |
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4050 return NGX_OK; |
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|
4051 } |
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4052 |
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4053 v->valid = 1; |
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|
4054 v->no_cacheable = 0; |
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|
4055 v->not_found = 0; |
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4056 |
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|
4057 v->data = (u_char *) "trailers"; |
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|
4058 v->len = sizeof("trailers") - 1; |
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|
4059 |
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|
4060 return NGX_OK; |
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changeset
|
4061 } |
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|
4062 |
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|
4063 |
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|
4064 static ngx_int_t |
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diff
changeset
|
4065 ngx_http_grpc_add_variables(ngx_conf_t *cf) |
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|
4066 { |
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|
4067 ngx_http_variable_t *var, *v; |
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|
4068 |
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changeset
|
4069 for (v = ngx_http_grpc_vars; v->name.len; v++) { |
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diff
changeset
|
4070 var = ngx_http_add_variable(cf, &v->name, v->flags); |
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changeset
|
4071 if (var == NULL) { |
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|
4072 return NGX_ERROR; |
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changeset
|
4073 } |
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|
4074 |
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|
4075 var->get_handler = v->get_handler; |
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|
4076 var->data = v->data; |
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7233
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changeset
|
4077 } |
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|
4078 |
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|
4079 return NGX_OK; |
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changeset
|
4080 } |
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|
4081 |
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|
4082 |
7233 | 4083 static void * |
4084 ngx_http_grpc_create_loc_conf(ngx_conf_t *cf) | |
4085 { | |
4086 ngx_http_grpc_loc_conf_t *conf; | |
4087 | |
4088 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t)); | |
4089 if (conf == NULL) { | |
4090 return NULL; | |
4091 } | |
4092 | |
4093 /* | |
4094 * set by ngx_pcalloc(): | |
4095 * | |
4096 * conf->upstream.ignore_headers = 0; | |
4097 * conf->upstream.next_upstream = 0; | |
4098 * conf->upstream.hide_headers_hash = { NULL, 0 }; | |
4099 * conf->upstream.ssl_name = NULL; | |
4100 * | |
4101 * conf->headers_source = NULL; | |
4102 * conf->headers.lengths = NULL; | |
4103 * conf->headers.values = NULL; | |
4104 * conf->headers.hash = { NULL, 0 }; | |
4105 * conf->host = { 0, NULL }; | |
4106 * conf->host_set = 0; | |
4107 * conf->ssl = 0; | |
4108 * conf->ssl_protocols = 0; | |
4109 * conf->ssl_ciphers = { 0, NULL }; | |
4110 * conf->ssl_trusted_certificate = { 0, NULL }; | |
4111 * conf->ssl_crl = { 0, NULL }; | |
4112 * conf->ssl_certificate = { 0, NULL }; | |
4113 * conf->ssl_certificate_key = { 0, NULL }; | |
4114 */ | |
4115 | |
4116 conf->upstream.local = NGX_CONF_UNSET_PTR; | |
4117 conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; | |
4118 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
4119 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
4120 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
4121 conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
4122 | |
4123 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
4124 | |
4125 conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; | |
4126 conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; | |
4127 | |
4128 conf->upstream.intercept_errors = NGX_CONF_UNSET; | |
4129 | |
4130 #if (NGX_HTTP_SSL) | |
4131 conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; | |
4132 conf->upstream.ssl_server_name = NGX_CONF_UNSET; | |
4133 conf->upstream.ssl_verify = NGX_CONF_UNSET; | |
4134 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
4135 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
4136 #endif | |
4137 | |
4138 /* the hardcoded values */ | |
4139 conf->upstream.cyclic_temp_file = 0; | |
4140 conf->upstream.buffering = 0; | |
4141 conf->upstream.ignore_client_abort = 0; | |
4142 conf->upstream.send_lowat = 0; | |
4143 conf->upstream.bufs.num = 0; | |
4144 conf->upstream.busy_buffers_size = 0; | |
4145 conf->upstream.max_temp_file_size = 0; | |
4146 conf->upstream.temp_file_write_size = 0; | |
4147 conf->upstream.pass_request_headers = 1; | |
4148 conf->upstream.pass_request_body = 1; | |
4149 conf->upstream.force_ranges = 0; | |
4150 conf->upstream.pass_trailers = 1; | |
4151 conf->upstream.preserve_output = 1; | |
4152 | |
4153 ngx_str_set(&conf->upstream.module, "grpc"); | |
4154 | |
4155 return conf; | |
4156 } | |
4157 | |
4158 | |
4159 static char * | |
4160 ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
4161 { | |
4162 ngx_http_grpc_loc_conf_t *prev = parent; | |
4163 ngx_http_grpc_loc_conf_t *conf = child; | |
4164 | |
4165 ngx_int_t rc; | |
4166 ngx_hash_init_t hash; | |
4167 ngx_http_core_loc_conf_t *clcf; | |
4168 | |
4169 ngx_conf_merge_ptr_value(conf->upstream.local, | |
4170 prev->upstream.local, NULL); | |
4171 | |
4172 ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, | |
4173 prev->upstream.next_upstream_tries, 0); | |
4174 | |
4175 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
4176 prev->upstream.connect_timeout, 60000); | |
4177 | |
4178 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
4179 prev->upstream.send_timeout, 60000); | |
4180 | |
4181 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
4182 prev->upstream.read_timeout, 60000); | |
4183 | |
4184 ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, | |
4185 prev->upstream.next_upstream_timeout, 0); | |
4186 | |
4187 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
4188 prev->upstream.buffer_size, | |
4189 (size_t) ngx_pagesize); | |
4190 | |
4191 ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, | |
4192 prev->upstream.ignore_headers, | |
4193 NGX_CONF_BITMASK_SET); | |
4194 | |
4195 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
4196 prev->upstream.next_upstream, | |
4197 (NGX_CONF_BITMASK_SET | |
4198 |NGX_HTTP_UPSTREAM_FT_ERROR | |
4199 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
4200 | |
4201 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { | |
4202 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
4203 |NGX_HTTP_UPSTREAM_FT_OFF; | |
4204 } | |
4205 | |
4206 ngx_conf_merge_value(conf->upstream.intercept_errors, | |
4207 prev->upstream.intercept_errors, 0); | |
4208 | |
4209 #if (NGX_HTTP_SSL) | |
4210 | |
4211 ngx_conf_merge_value(conf->upstream.ssl_session_reuse, | |
4212 prev->upstream.ssl_session_reuse, 1); | |
4213 | |
4214 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
4215 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 | |
4216 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); | |
4217 | |
4218 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, | |
4219 "DEFAULT"); | |
4220 | |
4221 if (conf->upstream.ssl_name == NULL) { | |
4222 conf->upstream.ssl_name = prev->upstream.ssl_name; | |
4223 } | |
4224 | |
4225 ngx_conf_merge_value(conf->upstream.ssl_server_name, | |
4226 prev->upstream.ssl_server_name, 0); | |
4227 ngx_conf_merge_value(conf->upstream.ssl_verify, | |
4228 prev->upstream.ssl_verify, 0); | |
4229 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
4230 prev->ssl_verify_depth, 1); | |
4231 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
4232 prev->ssl_trusted_certificate, ""); | |
4233 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
4234 | |
4235 ngx_conf_merge_str_value(conf->ssl_certificate, | |
4236 prev->ssl_certificate, ""); | |
4237 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
4238 prev->ssl_certificate_key, ""); | |
4239 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
4240 | |
4241 if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) { | |
4242 return NGX_CONF_ERROR; | |
4243 } | |
4244 | |
4245 #endif | |
4246 | |
4247 hash.max_size = 512; | |
4248 hash.bucket_size = ngx_align(64, ngx_cacheline_size); | |
4249 hash.name = "grpc_headers_hash"; | |
4250 | |
4251 if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, | |
4252 &prev->upstream, ngx_http_grpc_hide_headers, &hash) | |
4253 != NGX_OK) | |
4254 { | |
4255 return NGX_CONF_ERROR; | |
4256 } | |
4257 | |
4258 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
4259 | |
4260 if (clcf->noname && conf->upstream.upstream == NULL) { | |
4261 conf->upstream.upstream = prev->upstream.upstream; | |
4262 conf->host = prev->host; | |
4263 #if (NGX_HTTP_SSL) | |
4264 conf->upstream.ssl = prev->upstream.ssl; | |
4265 #endif | |
4266 } | |
4267 | |
4268 if (clcf->lmt_excpt && clcf->handler == NULL && conf->upstream.upstream) { | |
4269 clcf->handler = ngx_http_grpc_handler; | |
4270 } | |
4271 | |
4272 if (conf->headers_source == NULL) { | |
4273 conf->headers = prev->headers; | |
4274 conf->headers_source = prev->headers_source; | |
4275 conf->host_set = prev->host_set; | |
4276 } | |
4277 | |
4278 rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers, | |
4279 ngx_http_grpc_headers); | |
4280 if (rc != NGX_OK) { | |
4281 return NGX_CONF_ERROR; | |
4282 } | |
4283 | |
4284 /* | |
4285 * special handling to preserve conf->headers in the "http" section | |
4286 * to inherit it to all servers | |
4287 */ | |
4288 | |
4289 if (prev->headers.hash.buckets == NULL | |
4290 && conf->headers_source == prev->headers_source) | |
4291 { | |
4292 prev->headers = conf->headers; | |
4293 prev->host_set = conf->host_set; | |
4294 } | |
4295 | |
4296 return NGX_CONF_OK; | |
4297 } | |
4298 | |
4299 | |
4300 static ngx_int_t | |
4301 ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf, | |
4302 ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers) | |
4303 { | |
4304 u_char *p; | |
4305 size_t size; | |
4306 uintptr_t *code; | |
4307 ngx_uint_t i; | |
4308 ngx_array_t headers_names, headers_merged; | |
4309 ngx_keyval_t *src, *s, *h; | |
4310 ngx_hash_key_t *hk; | |
4311 ngx_hash_init_t hash; | |
4312 ngx_http_script_compile_t sc; | |
4313 ngx_http_script_copy_code_t *copy; | |
4314 | |
4315 if (headers->hash.buckets) { | |
4316 return NGX_OK; | |
4317 } | |
4318 | |
4319 if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) | |
4320 != NGX_OK) | |
4321 { | |
4322 return NGX_ERROR; | |
4323 } | |
4324 | |
4325 if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) | |
4326 != NGX_OK) | |
4327 { | |
4328 return NGX_ERROR; | |
4329 } | |
4330 | |
4331 headers->lengths = ngx_array_create(cf->pool, 64, 1); | |
4332 if (headers->lengths == NULL) { | |
4333 return NGX_ERROR; | |
4334 } | |
4335 | |
4336 headers->values = ngx_array_create(cf->pool, 512, 1); | |
4337 if (headers->values == NULL) { | |
4338 return NGX_ERROR; | |
4339 } | |
4340 | |
4341 if (conf->headers_source) { | |
4342 | |
4343 src = conf->headers_source->elts; | |
4344 for (i = 0; i < conf->headers_source->nelts; i++) { | |
4345 | |
4346 if (src[i].key.len == 4 | |
4347 && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0) | |
4348 { | |
4349 conf->host_set = 1; | |
4350 } | |
4351 | |
4352 s = ngx_array_push(&headers_merged); | |
4353 if (s == NULL) { | |
4354 return NGX_ERROR; | |
4355 } | |
4356 | |
4357 *s = src[i]; | |
4358 } | |
4359 } | |
4360 | |
4361 h = default_headers; | |
4362 | |
4363 while (h->key.len) { | |
4364 | |
4365 src = headers_merged.elts; | |
4366 for (i = 0; i < headers_merged.nelts; i++) { | |
4367 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { | |
4368 goto next; | |
4369 } | |
4370 } | |
4371 | |
4372 s = ngx_array_push(&headers_merged); | |
4373 if (s == NULL) { | |
4374 return NGX_ERROR; | |
4375 } | |
4376 | |
4377 *s = *h; | |
4378 | |
4379 next: | |
4380 | |
4381 h++; | |
4382 } | |
4383 | |
4384 | |
4385 src = headers_merged.elts; | |
4386 for (i = 0; i < headers_merged.nelts; i++) { | |
4387 | |
4388 hk = ngx_array_push(&headers_names); | |
4389 if (hk == NULL) { | |
4390 return NGX_ERROR; | |
4391 } | |
4392 | |
4393 hk->key = src[i].key; | |
4394 hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); | |
4395 hk->value = (void *) 1; | |
4396 | |
4397 if (src[i].value.len == 0) { | |
4398 continue; | |
4399 } | |
4400 | |
4401 copy = ngx_array_push_n(headers->lengths, | |
4402 sizeof(ngx_http_script_copy_code_t)); | |
4403 if (copy == NULL) { | |
4404 return NGX_ERROR; | |
4405 } | |
4406 | |
7406
ed5b3c4c1284
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7387
diff
changeset
|
4407 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
|
4408 ngx_http_script_copy_len_code; |
7233 | 4409 copy->len = src[i].key.len; |
4410 | |
4411 size = (sizeof(ngx_http_script_copy_code_t) | |
4412 + src[i].key.len + sizeof(uintptr_t) - 1) | |
4413 & ~(sizeof(uintptr_t) - 1); | |
4414 | |
4415 copy = ngx_array_push_n(headers->values, size); | |
4416 if (copy == NULL) { | |
4417 return NGX_ERROR; | |
4418 } | |
4419 | |
4420 copy->code = ngx_http_script_copy_code; | |
4421 copy->len = src[i].key.len; | |
4422 | |
4423 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); | |
4424 ngx_memcpy(p, src[i].key.data, src[i].key.len); | |
4425 | |
4426 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
4427 | |
4428 sc.cf = cf; | |
4429 sc.source = &src[i].value; | |
4430 sc.flushes = &headers->flushes; | |
4431 sc.lengths = &headers->lengths; | |
4432 sc.values = &headers->values; | |
4433 | |
4434 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
4435 return NGX_ERROR; | |
4436 } | |
4437 | |
4438 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
4439 if (code == NULL) { | |
4440 return NGX_ERROR; | |
4441 } | |
4442 | |
4443 *code = (uintptr_t) NULL; | |
4444 | |
4445 code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); | |
4446 if (code == NULL) { | |
4447 return NGX_ERROR; | |
4448 } | |
4449 | |
4450 *code = (uintptr_t) NULL; | |
4451 } | |
4452 | |
4453 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
4454 if (code == NULL) { | |
4455 return NGX_ERROR; | |
4456 } | |
4457 | |
4458 *code = (uintptr_t) NULL; | |
4459 | |
4460 | |
4461 hash.hash = &headers->hash; | |
4462 hash.key = ngx_hash_key_lc; | |
4463 hash.max_size = 512; | |
4464 hash.bucket_size = 64; | |
4465 hash.name = "grpc_headers_hash"; | |
4466 hash.pool = cf->pool; | |
4467 hash.temp_pool = NULL; | |
4468 | |
4469 return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); | |
4470 } | |
4471 | |
4472 | |
4473 static char * | |
4474 ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
4475 { | |
4476 ngx_http_grpc_loc_conf_t *glcf = conf; | |
4477 | |
4478 size_t add; | |
4479 ngx_str_t *value, *url; | |
4480 ngx_url_t u; | |
4481 ngx_http_core_loc_conf_t *clcf; | |
4482 | |
4483 if (glcf->upstream.upstream) { | |
4484 return "is duplicate"; | |
4485 } | |
4486 | |
4487 value = cf->args->elts; | |
4488 url = &value[1]; | |
4489 | |
4490 if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) { | |
4491 add = 7; | |
4492 | |
4493 } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) { | |
4494 | |
4495 #if (NGX_HTTP_SSL) | |
4496 glcf->ssl = 1; | |
4497 | |
4498 add = 8; | |
4499 #else | |
4500 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
4501 "grpcs protocol requires SSL support"); | |
4502 return NGX_CONF_ERROR; | |
4503 #endif | |
4504 | |
4505 } else { | |
4506 add = 0; | |
4507 } | |
4508 | |
4509 ngx_memzero(&u, sizeof(ngx_url_t)); | |
4510 | |
4511 u.url.len = url->len - add; | |
4512 u.url.data = url->data + add; | |
4513 u.no_resolve = 1; | |
4514 | |
4515 glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); | |
4516 if (glcf->upstream.upstream == NULL) { | |
4517 return NGX_CONF_ERROR; | |
4518 } | |
4519 | |
4520 if (u.family != AF_UNIX) { | |
4521 | |
4522 if (u.no_port) { | |
4523 glcf->host = u.host; | |
4524 | |
4525 } else { | |
4526 glcf->host.len = u.host.len + 1 + u.port_text.len; | |
4527 glcf->host.data = u.host.data; | |
4528 } | |
4529 | |
4530 } else { | |
4531 ngx_str_set(&glcf->host, "localhost"); | |
4532 } | |
4533 | |
4534 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
4535 | |
4536 clcf->handler = ngx_http_grpc_handler; | |
4537 | |
4538 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
4539 clcf->auto_redirect = 1; | |
4540 } | |
4541 | |
4542 return NGX_CONF_OK; | |
4543 } | |
4544 | |
4545 | |
4546 #if (NGX_HTTP_SSL) | |
4547 | |
4548 static char * | |
4549 ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
4550 { | |
4551 ngx_http_grpc_loc_conf_t *glcf = conf; | |
4552 | |
4553 ngx_str_t *value; | |
4554 | |
4555 if (glcf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
4556 return "is duplicate"; | |
4557 } | |
4558 | |
4559 value = cf->args->elts; | |
4560 | |
4561 glcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
4562 | |
4563 if (glcf->ssl_passwords == NULL) { | |
4564 return NGX_CONF_ERROR; | |
4565 } | |
4566 | |
4567 return NGX_CONF_OK; | |
4568 } | |
4569 | |
4570 | |
4571 static ngx_int_t | |
4572 ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf) | |
4573 { | |
4574 ngx_pool_cleanup_t *cln; | |
4575 | |
4576 glcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
4577 if (glcf->upstream.ssl == NULL) { | |
4578 return NGX_ERROR; | |
4579 } | |
4580 | |
4581 glcf->upstream.ssl->log = cf->log; | |
4582 | |
4583 if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL) | |
4584 != NGX_OK) | |
4585 { | |
4586 return NGX_ERROR; | |
4587 } | |
4588 | |
4589 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
4590 if (cln == NULL) { | |
4591 return NGX_ERROR; | |
4592 } | |
4593 | |
4594 cln->handler = ngx_ssl_cleanup_ctx; | |
4595 cln->data = glcf->upstream.ssl; | |
4596 | |
4597 if (glcf->ssl_certificate.len) { | |
4598 | |
4599 if (glcf->ssl_certificate_key.len == 0) { | |
4600 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
4601 "no \"grpc_ssl_certificate_key\" is defined " | |
4602 "for certificate \"%V\"", &glcf->ssl_certificate); | |
4603 return NGX_ERROR; | |
4604 } | |
4605 | |
4606 if (ngx_ssl_certificate(cf, glcf->upstream.ssl, &glcf->ssl_certificate, | |
4607 &glcf->ssl_certificate_key, glcf->ssl_passwords) | |
4608 != NGX_OK) | |
4609 { | |
4610 return NGX_ERROR; | |
4611 } | |
4612 } | |
4613 | |
4614 if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0) | |
4615 != NGX_OK) | |
4616 { | |
4617 return NGX_ERROR; | |
4618 } | |
4619 | |
4620 if (glcf->upstream.ssl_verify) { | |
4621 if (glcf->ssl_trusted_certificate.len == 0) { | |
4622 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
4623 "no grpc_ssl_trusted_certificate for grpc_ssl_verify"); | |
4624 return NGX_ERROR; | |
4625 } | |
4626 | |
4627 if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl, | |
4628 &glcf->ssl_trusted_certificate, | |
4629 glcf->ssl_verify_depth) | |
4630 != NGX_OK) | |
4631 { | |
4632 return NGX_ERROR; | |
4633 } | |
4634 | |
4635 if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) { | |
4636 return NGX_ERROR; | |
4637 } | |
4638 } | |
4639 | |
4640 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation | |
4641 | |
4642 if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx, | |
4643 (u_char *) "\x02h2", 3) | |
4644 != 0) | |
4645 { | |
4646 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
4647 "SSL_CTX_set_alpn_protos() failed"); | |
4648 return NGX_ERROR; | |
4649 } | |
4650 | |
4651 #endif | |
4652 | |
4653 return NGX_OK; | |
4654 } | |
4655 | |
4656 #endif |