Mercurial > hg > nginx
annotate src/http/modules/ngx_http_grpc_module.c @ 7410:9ac0e8b9aced stable-1.14
gRPC: clearing buffers in ngx_http_grpc_get_buf().
We copy input buffers to our buffers, so various flags might be
unexpectedly set in buffers returned by ngx_chain_get_free_buf().
In particular, the b->in_file flag might be set when the body was
written to a file in a different context. With sendfile enabled this
in turn might result in protocol corruption if such a buffer was reused
for a control frame.
Make sure to clear buffers and set only fields we really need to be set.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Mon, 02 Jul 2018 19:02:08 +0300 |
| parents | ed5b3c4c1284 |
| children | c948804cd628 |
| rev | line source |
|---|---|
| 7233 | 1 |
| 2 /* | |
| 3 * Copyright (C) Maxim Dounin | |
| 4 * Copyright (C) Nginx, Inc. | |
| 5 */ | |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_http.h> | |
| 11 | |
| 12 | |
| 13 typedef struct { | |
| 14 ngx_array_t *flushes; | |
| 15 ngx_array_t *lengths; | |
| 16 ngx_array_t *values; | |
| 17 ngx_hash_t hash; | |
| 18 } ngx_http_grpc_headers_t; | |
| 19 | |
| 20 | |
| 21 typedef struct { | |
| 22 ngx_http_upstream_conf_t upstream; | |
| 23 | |
| 24 ngx_http_grpc_headers_t headers; | |
| 25 ngx_array_t *headers_source; | |
| 26 | |
| 27 ngx_str_t host; | |
| 28 ngx_uint_t host_set; | |
| 29 | |
| 30 #if (NGX_HTTP_SSL) | |
| 31 ngx_uint_t ssl; | |
| 32 ngx_uint_t ssl_protocols; | |
| 33 ngx_str_t ssl_ciphers; | |
| 34 ngx_uint_t ssl_verify_depth; | |
| 35 ngx_str_t ssl_trusted_certificate; | |
| 36 ngx_str_t ssl_crl; | |
| 37 ngx_str_t ssl_certificate; | |
| 38 ngx_str_t ssl_certificate_key; | |
| 39 ngx_array_t *ssl_passwords; | |
| 40 #endif | |
| 41 } ngx_http_grpc_loc_conf_t; | |
| 42 | |
| 43 | |
| 44 typedef enum { | |
| 45 ngx_http_grpc_st_start = 0, | |
| 46 ngx_http_grpc_st_length_2, | |
| 47 ngx_http_grpc_st_length_3, | |
| 48 ngx_http_grpc_st_type, | |
| 49 ngx_http_grpc_st_flags, | |
| 50 ngx_http_grpc_st_stream_id, | |
| 51 ngx_http_grpc_st_stream_id_2, | |
| 52 ngx_http_grpc_st_stream_id_3, | |
| 53 ngx_http_grpc_st_stream_id_4, | |
| 54 ngx_http_grpc_st_payload, | |
| 55 ngx_http_grpc_st_padding | |
| 56 } ngx_http_grpc_state_e; | |
| 57 | |
| 58 | |
| 59 typedef struct { | |
| 60 size_t init_window; | |
| 61 size_t send_window; | |
| 62 size_t recv_window; | |
| 63 ngx_uint_t last_stream_id; | |
| 64 } ngx_http_grpc_conn_t; | |
| 65 | |
| 66 | |
| 67 typedef struct { | |
| 68 ngx_http_grpc_state_e state; | |
| 69 ngx_uint_t frame_state; | |
| 70 ngx_uint_t fragment_state; | |
| 71 | |
| 72 ngx_chain_t *in; | |
| 73 ngx_chain_t *out; | |
| 74 ngx_chain_t *free; | |
| 75 ngx_chain_t *busy; | |
| 76 | |
| 77 ngx_http_grpc_conn_t *connection; | |
| 78 | |
| 79 ngx_uint_t id; | |
| 80 | |
|
7387
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
81 ngx_uint_t pings; |
|
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
82 ngx_uint_t settings; |
|
6afba58cd5a3
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7249
diff
changeset
|
83 |
| 7233 | 84 ssize_t send_window; |
| 85 size_t recv_window; | |
| 86 | |
| 87 size_t rest; | |
| 88 ngx_uint_t stream_id; | |
| 89 u_char type; | |
| 90 u_char flags; | |
| 91 u_char padding; | |
| 92 | |
| 93 ngx_uint_t error; | |
| 94 ngx_uint_t window_update; | |
| 95 | |
| 96 ngx_uint_t setting_id; | |
| 97 ngx_uint_t setting_value; | |
| 98 | |
| 99 u_char ping_data[8]; | |
| 100 | |
| 101 ngx_uint_t index; | |
| 102 ngx_str_t name; | |
| 103 ngx_str_t value; | |
| 104 | |
| 105 u_char *field_end; | |
| 106 size_t field_length; | |
| 107 size_t field_rest; | |
| 108 u_char field_state; | |
| 109 | |
| 110 unsigned literal:1; | |
| 111 unsigned field_huffman:1; | |
| 112 | |
| 113 unsigned header_sent:1; | |
| 114 unsigned output_closed:1; | |
| 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 | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
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182 static ngx_int_t ngx_http_grpc_internal_trailers_variable( |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
183 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
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.
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parents:
7234
diff
changeset
|
1749 if (ctx->end_stream) { |
|
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gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1750 u->headers_in.content_length_n = 0; |
|
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gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1751 |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
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 { |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
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 { | |
|
7410
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3886 u_char *start; |
| 7233 | 3887 ngx_buf_t *b; |
| 3888 ngx_chain_t *cl; | |
| 3889 | |
| 3890 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
| 3891 if (cl == NULL) { | |
| 3892 return NULL; | |
| 3893 } | |
| 3894 | |
| 3895 b = cl->buf; | |
|
7410
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3896 start = b->start; |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3897 |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3898 if (start == NULL) { |
| 7233 | 3899 |
| 3900 /* | |
| 3901 * each buffer is large enough to hold two window update | |
| 3902 * frames in a row | |
| 3903 */ | |
| 3904 | |
|
7410
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3905 start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8); |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3906 if (start == NULL) { |
| 7233 | 3907 return NULL; |
| 3908 } | |
| 3909 | |
| 3910 } | |
| 3911 | |
|
7410
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3912 ngx_memzero(b, sizeof(ngx_buf_t)); |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3913 |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3914 b->start = start; |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3915 b->pos = start; |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3916 b->last = start; |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3917 b->end = start + 2 * sizeof(ngx_http_grpc_frame_t) + 8; |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3918 |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3919 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3920 b->temporary = 1; |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3921 b->flush = 1; |
|
9ac0e8b9aced
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7406
diff
changeset
|
3922 |
| 7233 | 3923 return cl; |
| 3924 } | |
| 3925 | |
| 3926 | |
| 3927 static ngx_http_grpc_ctx_t * | |
| 3928 ngx_http_grpc_get_ctx(ngx_http_request_t *r) | |
| 3929 { | |
| 3930 ngx_http_grpc_ctx_t *ctx; | |
| 3931 ngx_http_upstream_t *u; | |
| 3932 | |
| 3933 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
| 3934 | |
| 3935 if (ctx->connection == NULL) { | |
| 3936 u = r->upstream; | |
| 3937 | |
| 3938 if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) { | |
| 3939 return NULL; | |
| 3940 } | |
| 3941 } | |
| 3942 | |
| 3943 return ctx; | |
| 3944 } | |
| 3945 | |
| 3946 | |
| 3947 static ngx_int_t | |
| 3948 ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
| 3949 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc) | |
| 3950 { | |
| 3951 ngx_connection_t *c; | |
| 3952 ngx_pool_cleanup_t *cln; | |
| 3953 | |
| 3954 c = pc->connection; | |
| 3955 | |
| 3956 if (pc->cached) { | |
| 3957 | |
| 3958 /* | |
| 3959 * for cached connections, connection data can be found | |
| 3960 * in the cleanup handler | |
| 3961 */ | |
| 3962 | |
| 3963 for (cln = c->pool->cleanup; cln; cln = cln->next) { | |
| 3964 if (cln->handler == ngx_http_grpc_cleanup) { | |
| 3965 ctx->connection = cln->data; | |
| 3966 break; | |
| 3967 } | |
| 3968 } | |
| 3969 | |
| 3970 if (ctx->connection == NULL) { | |
| 3971 ngx_log_error(NGX_LOG_ERR, c->log, 0, | |
| 3972 "no connection data found for " | |
| 3973 "keepalive http2 connection"); | |
| 3974 return NGX_ERROR; | |
| 3975 } | |
| 3976 | |
| 3977 ctx->send_window = ctx->connection->init_window; | |
| 3978 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3979 | |
| 3980 ctx->connection->last_stream_id += 2; | |
| 3981 ctx->id = ctx->connection->last_stream_id; | |
| 3982 | |
| 3983 return NGX_OK; | |
| 3984 } | |
| 3985 | |
| 3986 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t)); | |
| 3987 if (cln == NULL) { | |
| 3988 return NGX_ERROR; | |
| 3989 } | |
| 3990 | |
| 3991 cln->handler = ngx_http_grpc_cleanup; | |
| 3992 ctx->connection = cln->data; | |
| 3993 | |
| 3994 ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 3995 ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 3996 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3997 | |
| 3998 ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 3999 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 4000 | |
| 4001 ctx->id = 1; | |
| 4002 ctx->connection->last_stream_id = 1; | |
| 4003 | |
| 4004 return NGX_OK; | |
| 4005 } | |
| 4006 | |
| 4007 | |
| 4008 static void | |
| 4009 ngx_http_grpc_cleanup(void *data) | |
| 4010 { | |
| 4011 #if 0 | |
| 4012 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 4013 "grpc cleanup"); | |
| 4014 #endif | |
| 4015 return; | |
| 4016 } | |
| 4017 | |
| 4018 | |
| 4019 static void | |
| 4020 ngx_http_grpc_abort_request(ngx_http_request_t *r) | |
| 4021 { | |
| 4022 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 4023 "abort grpc request"); | |
| 4024 return; | |
| 4025 } | |
| 4026 | |
| 4027 | |
| 4028 static void | |
| 4029 ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
| 4030 { | |
| 4031 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 4032 "finalize grpc request"); | |
| 4033 return; | |
| 4034 } | |
| 4035 | |
| 4036 | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4037 static ngx_int_t |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4038 ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4039 ngx_http_variable_value_t *v, uintptr_t data) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4040 { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4041 ngx_table_elt_t *te; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4042 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4043 te = r->headers_in.te; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4044 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4045 if (te == NULL) { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4046 v->not_found = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4047 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4048 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4049 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4050 if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4051 (u_char *) "trailers", 8 - 1) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4052 == NULL) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4053 { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4054 v->not_found = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4055 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4056 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4057 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4058 v->valid = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4059 v->no_cacheable = 0; |
|
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parents:
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diff
changeset
|
4060 v->not_found = 0; |
|
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gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4061 |
|
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parents:
7233
diff
changeset
|
4062 v->data = (u_char *) "trailers"; |
|
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4063 v->len = sizeof("trailers") - 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4064 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4065 return NGX_OK; |
|
c693daca57f7
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parents:
7233
diff
changeset
|
4066 } |
|
c693daca57f7
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parents:
7233
diff
changeset
|
4067 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4068 |
|
c693daca57f7
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parents:
7233
diff
changeset
|
4069 static ngx_int_t |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4070 ngx_http_grpc_add_variables(ngx_conf_t *cf) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4071 { |
|
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4072 ngx_http_variable_t *var, *v; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4073 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4074 for (v = ngx_http_grpc_vars; v->name.len; v++) { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4075 var = ngx_http_add_variable(cf, &v->name, v->flags); |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4076 if (var == NULL) { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4077 return NGX_ERROR; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4078 } |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4079 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4080 var->get_handler = v->get_handler; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4081 var->data = v->data; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4082 } |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4083 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4084 return NGX_OK; |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4085 } |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4086 |
|
c693daca57f7
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parents:
7233
diff
changeset
|
4087 |
| 7233 | 4088 static void * |
| 4089 ngx_http_grpc_create_loc_conf(ngx_conf_t *cf) | |
| 4090 { | |
| 4091 ngx_http_grpc_loc_conf_t *conf; | |
| 4092 | |
| 4093 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t)); | |
| 4094 if (conf == NULL) { | |
| 4095 return NULL; | |
| 4096 } | |
| 4097 | |
| 4098 /* | |
| 4099 * set by ngx_pcalloc(): | |
| 4100 * | |
| 4101 * conf->upstream.ignore_headers = 0; | |
| 4102 * conf->upstream.next_upstream = 0; | |
| 4103 * conf->upstream.hide_headers_hash = { NULL, 0 }; | |
| 4104 * conf->upstream.ssl_name = NULL; | |
| 4105 * | |
| 4106 * conf->headers_source = NULL; | |
| 4107 * conf->headers.lengths = NULL; | |
| 4108 * conf->headers.values = NULL; | |
| 4109 * conf->headers.hash = { NULL, 0 }; | |
| 4110 * conf->host = { 0, NULL }; | |
| 4111 * conf->host_set = 0; | |
| 4112 * conf->ssl = 0; | |
| 4113 * conf->ssl_protocols = 0; | |
| 4114 * conf->ssl_ciphers = { 0, NULL }; | |
| 4115 * conf->ssl_trusted_certificate = { 0, NULL }; | |
| 4116 * conf->ssl_crl = { 0, NULL }; | |
| 4117 * conf->ssl_certificate = { 0, NULL }; | |
| 4118 * conf->ssl_certificate_key = { 0, NULL }; | |
| 4119 */ | |
| 4120 | |
| 4121 conf->upstream.local = NGX_CONF_UNSET_PTR; | |
| 4122 conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; | |
| 4123 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
| 4124 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
| 4125 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
| 4126 conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
| 4127 | |
| 4128 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
| 4129 | |
| 4130 conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; | |
| 4131 conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; | |
| 4132 | |
| 4133 conf->upstream.intercept_errors = NGX_CONF_UNSET; | |
| 4134 | |
| 4135 #if (NGX_HTTP_SSL) | |
| 4136 conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; | |
| 4137 conf->upstream.ssl_server_name = NGX_CONF_UNSET; | |
| 4138 conf->upstream.ssl_verify = NGX_CONF_UNSET; | |
| 4139 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
| 4140 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
| 4141 #endif | |
| 4142 | |
| 4143 /* the hardcoded values */ | |
| 4144 conf->upstream.cyclic_temp_file = 0; | |
| 4145 conf->upstream.buffering = 0; | |
| 4146 conf->upstream.ignore_client_abort = 0; | |
| 4147 conf->upstream.send_lowat = 0; | |
| 4148 conf->upstream.bufs.num = 0; | |
| 4149 conf->upstream.busy_buffers_size = 0; | |
| 4150 conf->upstream.max_temp_file_size = 0; | |
| 4151 conf->upstream.temp_file_write_size = 0; | |
| 4152 conf->upstream.pass_request_headers = 1; | |
| 4153 conf->upstream.pass_request_body = 1; | |
| 4154 conf->upstream.force_ranges = 0; | |
| 4155 conf->upstream.pass_trailers = 1; | |
| 4156 conf->upstream.preserve_output = 1; | |
| 4157 | |
| 4158 ngx_str_set(&conf->upstream.module, "grpc"); | |
| 4159 | |
| 4160 return conf; | |
| 4161 } | |
| 4162 | |
| 4163 | |
| 4164 static char * | |
| 4165 ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 4166 { | |
| 4167 ngx_http_grpc_loc_conf_t *prev = parent; | |
| 4168 ngx_http_grpc_loc_conf_t *conf = child; | |
| 4169 | |
| 4170 ngx_int_t rc; | |
| 4171 ngx_hash_init_t hash; | |
| 4172 ngx_http_core_loc_conf_t *clcf; | |
| 4173 | |
| 4174 ngx_conf_merge_ptr_value(conf->upstream.local, | |
| 4175 prev->upstream.local, NULL); | |
| 4176 | |
| 4177 ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, | |
| 4178 prev->upstream.next_upstream_tries, 0); | |
| 4179 | |
| 4180 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
| 4181 prev->upstream.connect_timeout, 60000); | |
| 4182 | |
| 4183 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
| 4184 prev->upstream.send_timeout, 60000); | |
| 4185 | |
| 4186 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
| 4187 prev->upstream.read_timeout, 60000); | |
| 4188 | |
| 4189 ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, | |
| 4190 prev->upstream.next_upstream_timeout, 0); | |
| 4191 | |
| 4192 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
| 4193 prev->upstream.buffer_size, | |
| 4194 (size_t) ngx_pagesize); | |
| 4195 | |
| 4196 ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, | |
| 4197 prev->upstream.ignore_headers, | |
| 4198 NGX_CONF_BITMASK_SET); | |
| 4199 | |
| 4200 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
| 4201 prev->upstream.next_upstream, | |
| 4202 (NGX_CONF_BITMASK_SET | |
| 4203 |NGX_HTTP_UPSTREAM_FT_ERROR | |
| 4204 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
| 4205 | |
| 4206 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { | |
| 4207 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
| 4208 |NGX_HTTP_UPSTREAM_FT_OFF; | |
| 4209 } | |
| 4210 | |
| 4211 ngx_conf_merge_value(conf->upstream.intercept_errors, | |
| 4212 prev->upstream.intercept_errors, 0); | |
| 4213 | |
| 4214 #if (NGX_HTTP_SSL) | |
| 4215 | |
| 4216 ngx_conf_merge_value(conf->upstream.ssl_session_reuse, | |
| 4217 prev->upstream.ssl_session_reuse, 1); | |
| 4218 | |
| 4219 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
| 4220 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 | |
| 4221 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); | |
| 4222 | |
| 4223 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, | |
| 4224 "DEFAULT"); | |
| 4225 | |
| 4226 if (conf->upstream.ssl_name == NULL) { | |
| 4227 conf->upstream.ssl_name = prev->upstream.ssl_name; | |
| 4228 } | |
| 4229 | |
| 4230 ngx_conf_merge_value(conf->upstream.ssl_server_name, | |
| 4231 prev->upstream.ssl_server_name, 0); | |
| 4232 ngx_conf_merge_value(conf->upstream.ssl_verify, | |
| 4233 prev->upstream.ssl_verify, 0); | |
| 4234 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
| 4235 prev->ssl_verify_depth, 1); | |
| 4236 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
| 4237 prev->ssl_trusted_certificate, ""); | |
| 4238 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
| 4239 | |
| 4240 ngx_conf_merge_str_value(conf->ssl_certificate, | |
| 4241 prev->ssl_certificate, ""); | |
| 4242 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
| 4243 prev->ssl_certificate_key, ""); | |
| 4244 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
| 4245 | |
| 4246 if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) { | |
| 4247 return NGX_CONF_ERROR; | |
| 4248 } | |
| 4249 | |
| 4250 #endif | |
| 4251 | |
| 4252 hash.max_size = 512; | |
| 4253 hash.bucket_size = ngx_align(64, ngx_cacheline_size); | |
| 4254 hash.name = "grpc_headers_hash"; | |
| 4255 | |
| 4256 if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, | |
| 4257 &prev->upstream, ngx_http_grpc_hide_headers, &hash) | |
| 4258 != NGX_OK) | |
| 4259 { | |
| 4260 return NGX_CONF_ERROR; | |
| 4261 } | |
| 4262 | |
| 4263 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 4264 | |
| 4265 if (clcf->noname && conf->upstream.upstream == NULL) { | |
| 4266 conf->upstream.upstream = prev->upstream.upstream; | |
| 4267 conf->host = prev->host; | |
| 4268 #if (NGX_HTTP_SSL) | |
| 4269 conf->upstream.ssl = prev->upstream.ssl; | |
| 4270 #endif | |
| 4271 } | |
| 4272 | |
| 4273 if (clcf->lmt_excpt && clcf->handler == NULL && conf->upstream.upstream) { | |
| 4274 clcf->handler = ngx_http_grpc_handler; | |
| 4275 } | |
| 4276 | |
| 4277 if (conf->headers_source == NULL) { | |
| 4278 conf->headers = prev->headers; | |
| 4279 conf->headers_source = prev->headers_source; | |
| 4280 conf->host_set = prev->host_set; | |
| 4281 } | |
| 4282 | |
| 4283 rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers, | |
| 4284 ngx_http_grpc_headers); | |
| 4285 if (rc != NGX_OK) { | |
| 4286 return NGX_CONF_ERROR; | |
| 4287 } | |
| 4288 | |
| 4289 /* | |
| 4290 * special handling to preserve conf->headers in the "http" section | |
| 4291 * to inherit it to all servers | |
| 4292 */ | |
| 4293 | |
| 4294 if (prev->headers.hash.buckets == NULL | |
| 4295 && conf->headers_source == prev->headers_source) | |
| 4296 { | |
| 4297 prev->headers = conf->headers; | |
| 4298 prev->host_set = conf->host_set; | |
| 4299 } | |
| 4300 | |
| 4301 return NGX_CONF_OK; | |
| 4302 } | |
| 4303 | |
| 4304 | |
| 4305 static ngx_int_t | |
| 4306 ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf, | |
| 4307 ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers) | |
| 4308 { | |
| 4309 u_char *p; | |
| 4310 size_t size; | |
| 4311 uintptr_t *code; | |
| 4312 ngx_uint_t i; | |
| 4313 ngx_array_t headers_names, headers_merged; | |
| 4314 ngx_keyval_t *src, *s, *h; | |
| 4315 ngx_hash_key_t *hk; | |
| 4316 ngx_hash_init_t hash; | |
| 4317 ngx_http_script_compile_t sc; | |
| 4318 ngx_http_script_copy_code_t *copy; | |
| 4319 | |
| 4320 if (headers->hash.buckets) { | |
| 4321 return NGX_OK; | |
| 4322 } | |
| 4323 | |
| 4324 if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) | |
| 4325 != NGX_OK) | |
| 4326 { | |
| 4327 return NGX_ERROR; | |
| 4328 } | |
| 4329 | |
| 4330 if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) | |
| 4331 != NGX_OK) | |
| 4332 { | |
| 4333 return NGX_ERROR; | |
| 4334 } | |
| 4335 | |
| 4336 headers->lengths = ngx_array_create(cf->pool, 64, 1); | |
| 4337 if (headers->lengths == NULL) { | |
| 4338 return NGX_ERROR; | |
| 4339 } | |
| 4340 | |
| 4341 headers->values = ngx_array_create(cf->pool, 512, 1); | |
| 4342 if (headers->values == NULL) { | |
| 4343 return NGX_ERROR; | |
| 4344 } | |
| 4345 | |
| 4346 if (conf->headers_source) { | |
| 4347 | |
| 4348 src = conf->headers_source->elts; | |
| 4349 for (i = 0; i < conf->headers_source->nelts; i++) { | |
| 4350 | |
| 4351 if (src[i].key.len == 4 | |
| 4352 && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0) | |
| 4353 { | |
| 4354 conf->host_set = 1; | |
| 4355 } | |
| 4356 | |
| 4357 s = ngx_array_push(&headers_merged); | |
| 4358 if (s == NULL) { | |
| 4359 return NGX_ERROR; | |
| 4360 } | |
| 4361 | |
| 4362 *s = src[i]; | |
| 4363 } | |
| 4364 } | |
| 4365 | |
| 4366 h = default_headers; | |
| 4367 | |
| 4368 while (h->key.len) { | |
| 4369 | |
| 4370 src = headers_merged.elts; | |
| 4371 for (i = 0; i < headers_merged.nelts; i++) { | |
| 4372 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { | |
| 4373 goto next; | |
| 4374 } | |
| 4375 } | |
| 4376 | |
| 4377 s = ngx_array_push(&headers_merged); | |
| 4378 if (s == NULL) { | |
| 4379 return NGX_ERROR; | |
| 4380 } | |
| 4381 | |
| 4382 *s = *h; | |
| 4383 | |
| 4384 next: | |
| 4385 | |
| 4386 h++; | |
| 4387 } | |
| 4388 | |
| 4389 | |
| 4390 src = headers_merged.elts; | |
| 4391 for (i = 0; i < headers_merged.nelts; i++) { | |
| 4392 | |
| 4393 hk = ngx_array_push(&headers_names); | |
| 4394 if (hk == NULL) { | |
| 4395 return NGX_ERROR; | |
| 4396 } | |
| 4397 | |
| 4398 hk->key = src[i].key; | |
| 4399 hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); | |
| 4400 hk->value = (void *) 1; | |
| 4401 | |
| 4402 if (src[i].value.len == 0) { | |
| 4403 continue; | |
| 4404 } | |
| 4405 | |
| 4406 copy = ngx_array_push_n(headers->lengths, | |
| 4407 sizeof(ngx_http_script_copy_code_t)); | |
| 4408 if (copy == NULL) { | |
| 4409 return NGX_ERROR; | |
| 4410 } | |
| 4411 | |
|
7406
ed5b3c4c1284
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7387
diff
changeset
|
4412 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
|
4413 ngx_http_script_copy_len_code; |
| 7233 | 4414 copy->len = src[i].key.len; |
| 4415 | |
| 4416 size = (sizeof(ngx_http_script_copy_code_t) | |
| 4417 + src[i].key.len + sizeof(uintptr_t) - 1) | |
| 4418 & ~(sizeof(uintptr_t) - 1); | |
| 4419 | |
| 4420 copy = ngx_array_push_n(headers->values, size); | |
| 4421 if (copy == NULL) { | |
| 4422 return NGX_ERROR; | |
| 4423 } | |
| 4424 | |
| 4425 copy->code = ngx_http_script_copy_code; | |
| 4426 copy->len = src[i].key.len; | |
| 4427 | |
| 4428 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); | |
| 4429 ngx_memcpy(p, src[i].key.data, src[i].key.len); | |
| 4430 | |
| 4431 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 4432 | |
| 4433 sc.cf = cf; | |
| 4434 sc.source = &src[i].value; | |
| 4435 sc.flushes = &headers->flushes; | |
| 4436 sc.lengths = &headers->lengths; | |
| 4437 sc.values = &headers->values; | |
| 4438 | |
| 4439 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 4440 return NGX_ERROR; | |
| 4441 } | |
| 4442 | |
| 4443 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
| 4444 if (code == NULL) { | |
| 4445 return NGX_ERROR; | |
| 4446 } | |
| 4447 | |
| 4448 *code = (uintptr_t) NULL; | |
| 4449 | |
| 4450 code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); | |
| 4451 if (code == NULL) { | |
| 4452 return NGX_ERROR; | |
| 4453 } | |
| 4454 | |
| 4455 *code = (uintptr_t) NULL; | |
| 4456 } | |
| 4457 | |
| 4458 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
| 4459 if (code == NULL) { | |
| 4460 return NGX_ERROR; | |
| 4461 } | |
| 4462 | |
| 4463 *code = (uintptr_t) NULL; | |
| 4464 | |
| 4465 | |
| 4466 hash.hash = &headers->hash; | |
| 4467 hash.key = ngx_hash_key_lc; | |
| 4468 hash.max_size = 512; | |
| 4469 hash.bucket_size = 64; | |
| 4470 hash.name = "grpc_headers_hash"; | |
| 4471 hash.pool = cf->pool; | |
| 4472 hash.temp_pool = NULL; | |
| 4473 | |
| 4474 return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); | |
| 4475 } | |
| 4476 | |
| 4477 | |
| 4478 static char * | |
| 4479 ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 4480 { | |
| 4481 ngx_http_grpc_loc_conf_t *glcf = conf; | |
| 4482 | |
| 4483 size_t add; | |
| 4484 ngx_str_t *value, *url; | |
| 4485 ngx_url_t u; | |
| 4486 ngx_http_core_loc_conf_t *clcf; | |
| 4487 | |
| 4488 if (glcf->upstream.upstream) { | |
| 4489 return "is duplicate"; | |
| 4490 } | |
| 4491 | |
| 4492 value = cf->args->elts; | |
| 4493 url = &value[1]; | |
| 4494 | |
| 4495 if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) { | |
| 4496 add = 7; | |
| 4497 | |
| 4498 } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) { | |
| 4499 | |
| 4500 #if (NGX_HTTP_SSL) | |
| 4501 glcf->ssl = 1; | |
| 4502 | |
| 4503 add = 8; | |
| 4504 #else | |
| 4505 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 4506 "grpcs protocol requires SSL support"); | |
| 4507 return NGX_CONF_ERROR; | |
| 4508 #endif | |
| 4509 | |
| 4510 } else { | |
| 4511 add = 0; | |
| 4512 } | |
| 4513 | |
| 4514 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 4515 | |
| 4516 u.url.len = url->len - add; | |
| 4517 u.url.data = url->data + add; | |
| 4518 u.no_resolve = 1; | |
| 4519 | |
| 4520 glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); | |
| 4521 if (glcf->upstream.upstream == NULL) { | |
| 4522 return NGX_CONF_ERROR; | |
| 4523 } | |
| 4524 | |
| 4525 if (u.family != AF_UNIX) { | |
| 4526 | |
| 4527 if (u.no_port) { | |
| 4528 glcf->host = u.host; | |
| 4529 | |
| 4530 } else { | |
| 4531 glcf->host.len = u.host.len + 1 + u.port_text.len; | |
| 4532 glcf->host.data = u.host.data; | |
| 4533 } | |
| 4534 | |
| 4535 } else { | |
| 4536 ngx_str_set(&glcf->host, "localhost"); | |
| 4537 } | |
| 4538 | |
| 4539 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 4540 | |
| 4541 clcf->handler = ngx_http_grpc_handler; | |
| 4542 | |
| 4543 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
| 4544 clcf->auto_redirect = 1; | |
| 4545 } | |
| 4546 | |
| 4547 return NGX_CONF_OK; | |
| 4548 } | |
| 4549 | |
| 4550 | |
| 4551 #if (NGX_HTTP_SSL) | |
| 4552 | |
| 4553 static char * | |
| 4554 ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 4555 { | |
| 4556 ngx_http_grpc_loc_conf_t *glcf = conf; | |
| 4557 | |
| 4558 ngx_str_t *value; | |
| 4559 | |
| 4560 if (glcf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
| 4561 return "is duplicate"; | |
| 4562 } | |
| 4563 | |
| 4564 value = cf->args->elts; | |
| 4565 | |
| 4566 glcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
| 4567 | |
| 4568 if (glcf->ssl_passwords == NULL) { | |
| 4569 return NGX_CONF_ERROR; | |
| 4570 } | |
| 4571 | |
| 4572 return NGX_CONF_OK; | |
| 4573 } | |
| 4574 | |
| 4575 | |
| 4576 static ngx_int_t | |
| 4577 ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf) | |
| 4578 { | |
| 4579 ngx_pool_cleanup_t *cln; | |
| 4580 | |
| 4581 glcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
| 4582 if (glcf->upstream.ssl == NULL) { | |
| 4583 return NGX_ERROR; | |
| 4584 } | |
| 4585 | |
| 4586 glcf->upstream.ssl->log = cf->log; | |
| 4587 | |
| 4588 if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL) | |
| 4589 != NGX_OK) | |
| 4590 { | |
| 4591 return NGX_ERROR; | |
| 4592 } | |
| 4593 | |
| 4594 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
| 4595 if (cln == NULL) { | |
| 4596 return NGX_ERROR; | |
| 4597 } | |
| 4598 | |
| 4599 cln->handler = ngx_ssl_cleanup_ctx; | |
| 4600 cln->data = glcf->upstream.ssl; | |
| 4601 | |
| 4602 if (glcf->ssl_certificate.len) { | |
| 4603 | |
| 4604 if (glcf->ssl_certificate_key.len == 0) { | |
| 4605 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4606 "no \"grpc_ssl_certificate_key\" is defined " | |
| 4607 "for certificate \"%V\"", &glcf->ssl_certificate); | |
| 4608 return NGX_ERROR; | |
| 4609 } | |
| 4610 | |
| 4611 if (ngx_ssl_certificate(cf, glcf->upstream.ssl, &glcf->ssl_certificate, | |
| 4612 &glcf->ssl_certificate_key, glcf->ssl_passwords) | |
| 4613 != NGX_OK) | |
| 4614 { | |
| 4615 return NGX_ERROR; | |
| 4616 } | |
| 4617 } | |
| 4618 | |
| 4619 if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0) | |
| 4620 != NGX_OK) | |
| 4621 { | |
| 4622 return NGX_ERROR; | |
| 4623 } | |
| 4624 | |
| 4625 if (glcf->upstream.ssl_verify) { | |
| 4626 if (glcf->ssl_trusted_certificate.len == 0) { | |
| 4627 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4628 "no grpc_ssl_trusted_certificate for grpc_ssl_verify"); | |
| 4629 return NGX_ERROR; | |
| 4630 } | |
| 4631 | |
| 4632 if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl, | |
| 4633 &glcf->ssl_trusted_certificate, | |
| 4634 glcf->ssl_verify_depth) | |
| 4635 != NGX_OK) | |
| 4636 { | |
| 4637 return NGX_ERROR; | |
| 4638 } | |
| 4639 | |
| 4640 if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) { | |
| 4641 return NGX_ERROR; | |
| 4642 } | |
| 4643 } | |
| 4644 | |
| 4645 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation | |
| 4646 | |
| 4647 if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx, | |
| 4648 (u_char *) "\x02h2", 3) | |
| 4649 != 0) | |
| 4650 { | |
| 4651 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4652 "SSL_CTX_set_alpn_protos() failed"); | |
| 4653 return NGX_ERROR; | |
| 4654 } | |
| 4655 | |
| 4656 #endif | |
| 4657 | |
| 4658 return NGX_OK; | |
| 4659 } | |
| 4660 | |
| 4661 #endif |