Mercurial > hg > nginx
annotate src/http/modules/ngx_http_grpc_module.c @ 7234:c693daca57f7
gRPC: special handling of the TE request header.
According to the gRPC protocol specification, the "TE" header is used
to detect incompatible proxies, and at least grpc-c server rejects
requests without "TE: trailers".
To preserve the logic, we have to pass "TE: trailers" to the backend if
and only if the original request contains "trailers" in the "TE" header.
Note that no other TE values are allowed in HTTP/2, so we have to remove
anything else.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Sat, 17 Mar 2018 23:04:25 +0300 |
| parents | 2713b2dbf5bb |
| children | c2a0a838c40f |
| rev | line source |
|---|---|
| 7233 | 1 |
| 2 /* | |
| 3 * Copyright (C) Maxim Dounin | |
| 4 * Copyright (C) Nginx, Inc. | |
| 5 */ | |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_http.h> | |
| 11 | |
| 12 | |
| 13 typedef struct { | |
| 14 ngx_array_t *flushes; | |
| 15 ngx_array_t *lengths; | |
| 16 ngx_array_t *values; | |
| 17 ngx_hash_t hash; | |
| 18 } ngx_http_grpc_headers_t; | |
| 19 | |
| 20 | |
| 21 typedef struct { | |
| 22 ngx_http_upstream_conf_t upstream; | |
| 23 | |
| 24 ngx_http_grpc_headers_t headers; | |
| 25 ngx_array_t *headers_source; | |
| 26 | |
| 27 ngx_str_t host; | |
| 28 ngx_uint_t host_set; | |
| 29 | |
| 30 #if (NGX_HTTP_SSL) | |
| 31 ngx_uint_t ssl; | |
| 32 ngx_uint_t ssl_protocols; | |
| 33 ngx_str_t ssl_ciphers; | |
| 34 ngx_uint_t ssl_verify_depth; | |
| 35 ngx_str_t ssl_trusted_certificate; | |
| 36 ngx_str_t ssl_crl; | |
| 37 ngx_str_t ssl_certificate; | |
| 38 ngx_str_t ssl_certificate_key; | |
| 39 ngx_array_t *ssl_passwords; | |
| 40 #endif | |
| 41 } ngx_http_grpc_loc_conf_t; | |
| 42 | |
| 43 | |
| 44 typedef enum { | |
| 45 ngx_http_grpc_st_start = 0, | |
| 46 ngx_http_grpc_st_length_2, | |
| 47 ngx_http_grpc_st_length_3, | |
| 48 ngx_http_grpc_st_type, | |
| 49 ngx_http_grpc_st_flags, | |
| 50 ngx_http_grpc_st_stream_id, | |
| 51 ngx_http_grpc_st_stream_id_2, | |
| 52 ngx_http_grpc_st_stream_id_3, | |
| 53 ngx_http_grpc_st_stream_id_4, | |
| 54 ngx_http_grpc_st_payload, | |
| 55 ngx_http_grpc_st_padding | |
| 56 } ngx_http_grpc_state_e; | |
| 57 | |
| 58 | |
| 59 typedef struct { | |
| 60 size_t init_window; | |
| 61 size_t send_window; | |
| 62 size_t recv_window; | |
| 63 ngx_uint_t last_stream_id; | |
| 64 } ngx_http_grpc_conn_t; | |
| 65 | |
| 66 | |
| 67 typedef struct { | |
| 68 ngx_http_grpc_state_e state; | |
| 69 ngx_uint_t frame_state; | |
| 70 ngx_uint_t fragment_state; | |
| 71 | |
| 72 ngx_chain_t *in; | |
| 73 ngx_chain_t *out; | |
| 74 ngx_chain_t *free; | |
| 75 ngx_chain_t *busy; | |
| 76 | |
| 77 ngx_http_grpc_conn_t *connection; | |
| 78 | |
| 79 ngx_uint_t id; | |
| 80 | |
| 81 ssize_t send_window; | |
| 82 size_t recv_window; | |
| 83 | |
| 84 size_t rest; | |
| 85 ngx_uint_t stream_id; | |
| 86 u_char type; | |
| 87 u_char flags; | |
| 88 u_char padding; | |
| 89 | |
| 90 ngx_uint_t error; | |
| 91 ngx_uint_t window_update; | |
| 92 | |
| 93 ngx_uint_t setting_id; | |
| 94 ngx_uint_t setting_value; | |
| 95 | |
| 96 u_char ping_data[8]; | |
| 97 | |
| 98 ngx_uint_t index; | |
| 99 ngx_str_t name; | |
| 100 ngx_str_t value; | |
| 101 | |
| 102 u_char *field_end; | |
| 103 size_t field_length; | |
| 104 size_t field_rest; | |
| 105 u_char field_state; | |
| 106 | |
| 107 unsigned literal:1; | |
| 108 unsigned field_huffman:1; | |
| 109 | |
| 110 unsigned header_sent:1; | |
| 111 unsigned output_closed:1; | |
| 112 unsigned parsing_headers:1; | |
| 113 unsigned end_stream:1; | |
| 114 unsigned status:1; | |
| 115 | |
| 116 ngx_http_request_t *request; | |
| 117 } ngx_http_grpc_ctx_t; | |
| 118 | |
| 119 | |
| 120 typedef struct { | |
| 121 u_char length_0; | |
| 122 u_char length_1; | |
| 123 u_char length_2; | |
| 124 u_char type; | |
| 125 u_char flags; | |
| 126 u_char stream_id_0; | |
| 127 u_char stream_id_1; | |
| 128 u_char stream_id_2; | |
| 129 u_char stream_id_3; | |
| 130 } ngx_http_grpc_frame_t; | |
| 131 | |
| 132 | |
| 133 static ngx_int_t ngx_http_grpc_create_request(ngx_http_request_t *r); | |
| 134 static ngx_int_t ngx_http_grpc_reinit_request(ngx_http_request_t *r); | |
| 135 static ngx_int_t ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in); | |
| 136 static ngx_int_t ngx_http_grpc_process_header(ngx_http_request_t *r); | |
| 137 static ngx_int_t ngx_http_grpc_filter_init(void *data); | |
| 138 static ngx_int_t ngx_http_grpc_filter(void *data, ssize_t bytes); | |
| 139 | |
| 140 static ngx_int_t ngx_http_grpc_parse_frame(ngx_http_request_t *r, | |
| 141 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 142 static ngx_int_t ngx_http_grpc_parse_header(ngx_http_request_t *r, | |
| 143 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 144 static ngx_int_t ngx_http_grpc_parse_fragment(ngx_http_request_t *r, | |
| 145 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 146 static ngx_int_t ngx_http_grpc_validate_header_name(ngx_http_request_t *r, | |
| 147 ngx_str_t *s); | |
| 148 static ngx_int_t ngx_http_grpc_validate_header_value(ngx_http_request_t *r, | |
| 149 ngx_str_t *s); | |
| 150 static ngx_int_t ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, | |
| 151 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 152 static ngx_int_t ngx_http_grpc_parse_goaway(ngx_http_request_t *r, | |
| 153 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 154 static ngx_int_t ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
| 155 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 156 static ngx_int_t ngx_http_grpc_parse_settings(ngx_http_request_t *r, | |
| 157 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 158 static ngx_int_t ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
| 159 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 160 | |
| 161 static ngx_int_t ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, | |
| 162 ngx_http_grpc_ctx_t *ctx); | |
| 163 static ngx_int_t ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, | |
| 164 ngx_http_grpc_ctx_t *ctx); | |
| 165 static ngx_int_t ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
| 166 ngx_http_grpc_ctx_t *ctx); | |
| 167 | |
| 168 static ngx_chain_t *ngx_http_grpc_get_buf(ngx_http_request_t *r, | |
| 169 ngx_http_grpc_ctx_t *ctx); | |
| 170 static ngx_http_grpc_ctx_t *ngx_http_grpc_get_ctx(ngx_http_request_t *r); | |
| 171 static ngx_int_t ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
| 172 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc); | |
| 173 static void ngx_http_grpc_cleanup(void *data); | |
| 174 | |
| 175 static void ngx_http_grpc_abort_request(ngx_http_request_t *r); | |
| 176 static void ngx_http_grpc_finalize_request(ngx_http_request_t *r, | |
| 177 ngx_int_t rc); | |
| 178 | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
179 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
|
180 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
|
181 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
182 static ngx_int_t ngx_http_grpc_add_variables(ngx_conf_t *cf); |
| 7233 | 183 static void *ngx_http_grpc_create_loc_conf(ngx_conf_t *cf); |
| 184 static char *ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, | |
| 185 void *parent, void *child); | |
| 186 static ngx_int_t ngx_http_grpc_init_headers(ngx_conf_t *cf, | |
| 187 ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_headers_t *headers, | |
| 188 ngx_keyval_t *default_headers); | |
| 189 | |
| 190 static char *ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 191 void *conf); | |
| 192 | |
| 193 #if (NGX_HTTP_SSL) | |
| 194 static char *ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, | |
| 195 ngx_command_t *cmd, void *conf); | |
| 196 static ngx_int_t ngx_http_grpc_set_ssl(ngx_conf_t *cf, | |
| 197 ngx_http_grpc_loc_conf_t *glcf); | |
| 198 #endif | |
| 199 | |
| 200 | |
| 201 static ngx_conf_bitmask_t ngx_http_grpc_next_upstream_masks[] = { | |
| 202 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
| 203 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
| 204 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
| 205 { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT }, | |
| 206 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, | |
| 207 { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 }, | |
| 208 { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, | |
| 209 { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 }, | |
| 210 { ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 }, | |
| 211 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
| 212 { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 }, | |
| 213 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, | |
| 214 { ngx_null_string, 0 } | |
| 215 }; | |
| 216 | |
| 217 | |
| 218 #if (NGX_HTTP_SSL) | |
| 219 | |
| 220 static ngx_conf_bitmask_t ngx_http_grpc_ssl_protocols[] = { | |
| 221 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
| 222 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
| 223 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
| 224 { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, | |
| 225 { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, | |
| 226 { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, | |
| 227 { ngx_null_string, 0 } | |
| 228 }; | |
| 229 | |
| 230 #endif | |
| 231 | |
| 232 | |
| 233 static ngx_command_t ngx_http_grpc_commands[] = { | |
| 234 | |
| 235 { ngx_string("grpc_pass"), | |
| 236 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
| 237 ngx_http_grpc_pass, | |
| 238 NGX_HTTP_LOC_CONF_OFFSET, | |
| 239 0, | |
| 240 NULL }, | |
| 241 | |
| 242 { ngx_string("grpc_bind"), | |
| 243 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, | |
| 244 ngx_http_upstream_bind_set_slot, | |
| 245 NGX_HTTP_LOC_CONF_OFFSET, | |
| 246 offsetof(ngx_http_grpc_loc_conf_t, upstream.local), | |
| 247 NULL }, | |
| 248 | |
| 249 { ngx_string("grpc_connect_timeout"), | |
| 250 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 251 ngx_conf_set_msec_slot, | |
| 252 NGX_HTTP_LOC_CONF_OFFSET, | |
| 253 offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout), | |
| 254 NULL }, | |
| 255 | |
| 256 { ngx_string("grpc_send_timeout"), | |
| 257 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 258 ngx_conf_set_msec_slot, | |
| 259 NGX_HTTP_LOC_CONF_OFFSET, | |
| 260 offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout), | |
| 261 NULL }, | |
| 262 | |
| 263 { ngx_string("grpc_intercept_errors"), | |
| 264 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 265 ngx_conf_set_flag_slot, | |
| 266 NGX_HTTP_LOC_CONF_OFFSET, | |
| 267 offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors), | |
| 268 NULL }, | |
| 269 | |
| 270 { ngx_string("grpc_buffer_size"), | |
| 271 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 272 ngx_conf_set_size_slot, | |
| 273 NGX_HTTP_LOC_CONF_OFFSET, | |
| 274 offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size), | |
| 275 NULL }, | |
| 276 | |
| 277 { ngx_string("grpc_read_timeout"), | |
| 278 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 279 ngx_conf_set_msec_slot, | |
| 280 NGX_HTTP_LOC_CONF_OFFSET, | |
| 281 offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout), | |
| 282 NULL }, | |
| 283 | |
| 284 { ngx_string("grpc_next_upstream"), | |
| 285 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 286 ngx_conf_set_bitmask_slot, | |
| 287 NGX_HTTP_LOC_CONF_OFFSET, | |
| 288 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream), | |
| 289 &ngx_http_grpc_next_upstream_masks }, | |
| 290 | |
| 291 { ngx_string("grpc_next_upstream_tries"), | |
| 292 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 293 ngx_conf_set_num_slot, | |
| 294 NGX_HTTP_LOC_CONF_OFFSET, | |
| 295 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries), | |
| 296 NULL }, | |
| 297 | |
| 298 { ngx_string("grpc_next_upstream_timeout"), | |
| 299 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 300 ngx_conf_set_msec_slot, | |
| 301 NGX_HTTP_LOC_CONF_OFFSET, | |
| 302 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout), | |
| 303 NULL }, | |
| 304 | |
| 305 { ngx_string("grpc_set_header"), | |
| 306 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
| 307 ngx_conf_set_keyval_slot, | |
| 308 NGX_HTTP_LOC_CONF_OFFSET, | |
| 309 offsetof(ngx_http_grpc_loc_conf_t, headers_source), | |
| 310 NULL }, | |
| 311 | |
| 312 { ngx_string("grpc_pass_header"), | |
| 313 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 314 ngx_conf_set_str_array_slot, | |
| 315 NGX_HTTP_LOC_CONF_OFFSET, | |
| 316 offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers), | |
| 317 NULL }, | |
| 318 | |
| 319 { ngx_string("grpc_hide_header"), | |
| 320 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 321 ngx_conf_set_str_array_slot, | |
| 322 NGX_HTTP_LOC_CONF_OFFSET, | |
| 323 offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers), | |
| 324 NULL }, | |
| 325 | |
| 326 { ngx_string("grpc_ignore_headers"), | |
| 327 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 328 ngx_conf_set_bitmask_slot, | |
| 329 NGX_HTTP_LOC_CONF_OFFSET, | |
| 330 offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers), | |
| 331 &ngx_http_upstream_ignore_headers_masks }, | |
| 332 | |
| 333 #if (NGX_HTTP_SSL) | |
| 334 | |
| 335 { ngx_string("grpc_ssl_session_reuse"), | |
| 336 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 337 ngx_conf_set_flag_slot, | |
| 338 NGX_HTTP_LOC_CONF_OFFSET, | |
| 339 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse), | |
| 340 NULL }, | |
| 341 | |
| 342 { ngx_string("grpc_ssl_protocols"), | |
| 343 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 344 ngx_conf_set_bitmask_slot, | |
| 345 NGX_HTTP_LOC_CONF_OFFSET, | |
| 346 offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols), | |
| 347 &ngx_http_grpc_ssl_protocols }, | |
| 348 | |
| 349 { ngx_string("grpc_ssl_ciphers"), | |
| 350 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 351 ngx_conf_set_str_slot, | |
| 352 NGX_HTTP_LOC_CONF_OFFSET, | |
| 353 offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers), | |
| 354 NULL }, | |
| 355 | |
| 356 { ngx_string("grpc_ssl_name"), | |
| 357 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 358 ngx_http_set_complex_value_slot, | |
| 359 NGX_HTTP_LOC_CONF_OFFSET, | |
| 360 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name), | |
| 361 NULL }, | |
| 362 | |
| 363 { ngx_string("grpc_ssl_server_name"), | |
| 364 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 365 ngx_conf_set_flag_slot, | |
| 366 NGX_HTTP_LOC_CONF_OFFSET, | |
| 367 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name), | |
| 368 NULL }, | |
| 369 | |
| 370 { ngx_string("grpc_ssl_verify"), | |
| 371 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 372 ngx_conf_set_flag_slot, | |
| 373 NGX_HTTP_LOC_CONF_OFFSET, | |
| 374 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify), | |
| 375 NULL }, | |
| 376 | |
| 377 { ngx_string("grpc_ssl_verify_depth"), | |
| 378 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 379 ngx_conf_set_num_slot, | |
| 380 NGX_HTTP_LOC_CONF_OFFSET, | |
| 381 offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth), | |
| 382 NULL }, | |
| 383 | |
| 384 { ngx_string("grpc_ssl_trusted_certificate"), | |
| 385 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 386 ngx_conf_set_str_slot, | |
| 387 NGX_HTTP_LOC_CONF_OFFSET, | |
| 388 offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate), | |
| 389 NULL }, | |
| 390 | |
| 391 { ngx_string("grpc_ssl_crl"), | |
| 392 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 393 ngx_conf_set_str_slot, | |
| 394 NGX_HTTP_LOC_CONF_OFFSET, | |
| 395 offsetof(ngx_http_grpc_loc_conf_t, ssl_crl), | |
| 396 NULL }, | |
| 397 | |
| 398 { ngx_string("grpc_ssl_certificate"), | |
| 399 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 400 ngx_conf_set_str_slot, | |
| 401 NGX_HTTP_LOC_CONF_OFFSET, | |
| 402 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate), | |
| 403 NULL }, | |
| 404 | |
| 405 { ngx_string("grpc_ssl_certificate_key"), | |
| 406 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 407 ngx_conf_set_str_slot, | |
| 408 NGX_HTTP_LOC_CONF_OFFSET, | |
| 409 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate_key), | |
| 410 NULL }, | |
| 411 | |
| 412 { ngx_string("grpc_ssl_password_file"), | |
| 413 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 414 ngx_http_grpc_ssl_password_file, | |
| 415 NGX_HTTP_LOC_CONF_OFFSET, | |
| 416 0, | |
| 417 NULL }, | |
| 418 | |
| 419 #endif | |
| 420 | |
| 421 ngx_null_command | |
| 422 }; | |
| 423 | |
| 424 | |
| 425 static ngx_http_module_t ngx_http_grpc_module_ctx = { | |
|
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426 ngx_http_grpc_add_variables, /* preconfiguration */ |
| 7233 | 427 NULL, /* postconfiguration */ |
| 428 | |
| 429 NULL, /* create main configuration */ | |
| 430 NULL, /* init main configuration */ | |
| 431 | |
| 432 NULL, /* create server configuration */ | |
| 433 NULL, /* merge server configuration */ | |
| 434 | |
| 435 ngx_http_grpc_create_loc_conf, /* create location configuration */ | |
| 436 ngx_http_grpc_merge_loc_conf /* merge location configuration */ | |
| 437 }; | |
| 438 | |
| 439 | |
| 440 ngx_module_t ngx_http_grpc_module = { | |
| 441 NGX_MODULE_V1, | |
| 442 &ngx_http_grpc_module_ctx, /* module context */ | |
| 443 ngx_http_grpc_commands, /* module directives */ | |
| 444 NGX_HTTP_MODULE, /* module type */ | |
| 445 NULL, /* init master */ | |
| 446 NULL, /* init module */ | |
| 447 NULL, /* init process */ | |
| 448 NULL, /* init thread */ | |
| 449 NULL, /* exit thread */ | |
| 450 NULL, /* exit process */ | |
| 451 NULL, /* exit master */ | |
| 452 NGX_MODULE_V1_PADDING | |
| 453 }; | |
| 454 | |
| 455 | |
| 456 static u_char ngx_http_grpc_connection_start[] = | |
| 457 "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* connection preface */ | |
| 458 | |
| 459 "\x00\x00\x12\x04\x00\x00\x00\x00\x00" /* settings frame */ | |
| 460 "\x00\x01\x00\x00\x00\x00" /* header table size */ | |
| 461 "\x00\x02\x00\x00\x00\x00" /* disable push */ | |
| 462 "\x00\x04\x7f\xff\xff\xff" /* initial window */ | |
| 463 | |
| 464 "\x00\x00\x04\x08\x00\x00\x00\x00\x00" /* window update frame */ | |
| 465 "\x7f\xff\x00\x00"; | |
| 466 | |
| 467 | |
| 468 static ngx_keyval_t ngx_http_grpc_headers[] = { | |
| 469 { ngx_string("Content-Length"), ngx_string("$content_length") }, | |
|
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470 { ngx_string("TE"), ngx_string("$grpc_internal_trailers") }, |
| 7233 | 471 { ngx_string("Host"), ngx_string("") }, |
| 472 { ngx_string("Connection"), ngx_string("") }, | |
| 473 { ngx_string("Transfer-Encoding"), ngx_string("") }, | |
| 474 { ngx_string("Keep-Alive"), ngx_string("") }, | |
| 475 { ngx_string("Expect"), ngx_string("") }, | |
| 476 { ngx_string("Upgrade"), ngx_string("") }, | |
| 477 { ngx_null_string, ngx_null_string } | |
| 478 }; | |
| 479 | |
| 480 | |
| 481 static ngx_str_t ngx_http_grpc_hide_headers[] = { | |
| 482 ngx_string("Date"), | |
| 483 ngx_string("Server"), | |
| 484 ngx_string("X-Accel-Expires"), | |
| 485 ngx_string("X-Accel-Redirect"), | |
| 486 ngx_string("X-Accel-Limit-Rate"), | |
| 487 ngx_string("X-Accel-Buffering"), | |
| 488 ngx_string("X-Accel-Charset"), | |
| 489 ngx_null_string | |
| 490 }; | |
| 491 | |
| 492 | |
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493 static ngx_http_variable_t ngx_http_grpc_vars[] = { |
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494 |
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495 { ngx_string("grpc_internal_trailers"), NULL, |
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496 ngx_http_grpc_internal_trailers_variable, 0, |
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497 NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
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498 |
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499 ngx_http_null_variable |
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500 }; |
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501 |
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502 |
| 7233 | 503 static ngx_int_t |
| 504 ngx_http_grpc_handler(ngx_http_request_t *r) | |
| 505 { | |
| 506 ngx_int_t rc; | |
| 507 ngx_http_upstream_t *u; | |
| 508 ngx_http_grpc_ctx_t *ctx; | |
| 509 ngx_http_grpc_loc_conf_t *glcf; | |
| 510 | |
| 511 if (ngx_http_upstream_create(r) != NGX_OK) { | |
| 512 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 513 } | |
| 514 | |
| 515 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
| 516 | |
| 517 u = r->upstream; | |
| 518 | |
| 519 #if (NGX_HTTP_SSL) | |
| 520 u->ssl = (glcf->upstream.ssl != NULL); | |
| 521 | |
| 522 if (u->ssl) { | |
| 523 ngx_str_set(&u->schema, "grpcs://"); | |
| 524 | |
| 525 } else { | |
| 526 ngx_str_set(&u->schema, "grpc://"); | |
| 527 } | |
| 528 #else | |
| 529 ngx_str_set(&u->schema, "grpc://"); | |
| 530 #endif | |
| 531 | |
| 532 u->output.tag = (ngx_buf_tag_t) &ngx_http_grpc_module; | |
| 533 | |
| 534 u->conf = &glcf->upstream; | |
| 535 | |
| 536 u->create_request = ngx_http_grpc_create_request; | |
| 537 u->reinit_request = ngx_http_grpc_reinit_request; | |
| 538 u->process_header = ngx_http_grpc_process_header; | |
| 539 u->abort_request = ngx_http_grpc_abort_request; | |
| 540 u->finalize_request = ngx_http_grpc_finalize_request; | |
| 541 | |
| 542 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_grpc_ctx_t)); | |
| 543 if (ctx == NULL) { | |
| 544 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 545 } | |
| 546 | |
| 547 ctx->request = r; | |
| 548 | |
| 549 ngx_http_set_ctx(r, ctx, ngx_http_grpc_module); | |
| 550 | |
| 551 u->input_filter_init = ngx_http_grpc_filter_init; | |
| 552 u->input_filter = ngx_http_grpc_filter; | |
| 553 u->input_filter_ctx = ctx; | |
| 554 | |
| 555 r->request_body_no_buffering = 1; | |
| 556 | |
| 557 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init); | |
| 558 | |
| 559 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { | |
| 560 return rc; | |
| 561 } | |
| 562 | |
| 563 return NGX_DONE; | |
| 564 } | |
| 565 | |
| 566 | |
| 567 static ngx_int_t | |
| 568 ngx_http_grpc_create_request(ngx_http_request_t *r) | |
| 569 { | |
| 570 u_char *p, *tmp, *key_tmp, *val_tmp, *headers_frame; | |
| 571 size_t len, tmp_len, key_len, val_len, uri_len; | |
| 572 uintptr_t escape; | |
| 573 ngx_buf_t *b; | |
| 574 ngx_uint_t i, next; | |
| 575 ngx_chain_t *cl, *body; | |
| 576 ngx_list_part_t *part; | |
| 577 ngx_table_elt_t *header; | |
| 578 ngx_http_upstream_t *u; | |
| 579 ngx_http_grpc_frame_t *f; | |
| 580 ngx_http_script_code_pt code; | |
| 581 ngx_http_grpc_loc_conf_t *glcf; | |
| 582 ngx_http_script_engine_t e, le; | |
| 583 ngx_http_script_len_code_pt lcode; | |
| 584 | |
| 585 u = r->upstream; | |
| 586 | |
| 587 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
| 588 | |
| 589 len = sizeof(ngx_http_grpc_connection_start) - 1 | |
| 590 + sizeof(ngx_http_grpc_frame_t); /* headers frame */ | |
| 591 | |
| 592 /* :method header */ | |
| 593 | |
| 594 if (r->method == NGX_HTTP_GET || r->method == NGX_HTTP_POST) { | |
| 595 len += 1; | |
| 596 tmp_len = 0; | |
| 597 | |
| 598 } else { | |
| 599 len += 1 + NGX_HTTP_V2_INT_OCTETS + r->method_name.len; | |
| 600 tmp_len = r->method_name.len; | |
| 601 } | |
| 602 | |
| 603 /* :scheme header */ | |
| 604 | |
| 605 len += 1; | |
| 606 | |
| 607 /* :path header */ | |
| 608 | |
| 609 if (r->valid_unparsed_uri) { | |
| 610 escape = 0; | |
| 611 uri_len = r->unparsed_uri.len; | |
| 612 | |
| 613 } else { | |
| 614 escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
| 615 NGX_ESCAPE_URI); | |
| 616 uri_len = r->uri.len + escape + sizeof("?") - 1 + r->args.len; | |
| 617 } | |
| 618 | |
| 619 len += 1 + NGX_HTTP_V2_INT_OCTETS + uri_len; | |
| 620 | |
| 621 if (tmp_len < uri_len) { | |
| 622 tmp_len = uri_len; | |
| 623 } | |
| 624 | |
| 625 /* :authority header */ | |
| 626 | |
| 627 if (!glcf->host_set) { | |
| 628 len += 1 + NGX_HTTP_V2_INT_OCTETS + glcf->host.len; | |
| 629 | |
| 630 if (tmp_len < glcf->host.len) { | |
| 631 tmp_len = glcf->host.len; | |
| 632 } | |
| 633 } | |
| 634 | |
| 635 /* other headers */ | |
| 636 | |
| 637 ngx_http_script_flush_no_cacheable_variables(r, glcf->headers.flushes); | |
| 638 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
| 639 | |
| 640 le.ip = glcf->headers.lengths->elts; | |
| 641 le.request = r; | |
| 642 le.flushed = 1; | |
| 643 | |
| 644 while (*(uintptr_t *) le.ip) { | |
| 645 | |
| 646 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 647 key_len = lcode(&le); | |
| 648 | |
| 649 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
| 650 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 651 } | |
| 652 le.ip += sizeof(uintptr_t); | |
| 653 | |
| 654 if (val_len == 0) { | |
| 655 continue; | |
| 656 } | |
| 657 | |
| 658 len += 1 + NGX_HTTP_V2_INT_OCTETS + key_len | |
| 659 + NGX_HTTP_V2_INT_OCTETS + val_len; | |
| 660 | |
| 661 if (tmp_len < key_len) { | |
| 662 tmp_len = key_len; | |
| 663 } | |
| 664 | |
| 665 if (tmp_len < val_len) { | |
| 666 tmp_len = val_len; | |
| 667 } | |
| 668 } | |
| 669 | |
| 670 if (glcf->upstream.pass_request_headers) { | |
| 671 part = &r->headers_in.headers.part; | |
| 672 header = part->elts; | |
| 673 | |
| 674 for (i = 0; /* void */; i++) { | |
| 675 | |
| 676 if (i >= part->nelts) { | |
| 677 if (part->next == NULL) { | |
| 678 break; | |
| 679 } | |
| 680 | |
| 681 part = part->next; | |
| 682 header = part->elts; | |
| 683 i = 0; | |
| 684 } | |
| 685 | |
| 686 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
| 687 header[i].lowcase_key, header[i].key.len)) | |
| 688 { | |
| 689 continue; | |
| 690 } | |
| 691 | |
| 692 len += 1 + NGX_HTTP_V2_INT_OCTETS + header[i].key.len | |
| 693 + NGX_HTTP_V2_INT_OCTETS + header[i].value.len; | |
| 694 | |
| 695 if (tmp_len < header[i].key.len) { | |
| 696 tmp_len = header[i].key.len; | |
| 697 } | |
| 698 | |
| 699 if (tmp_len < header[i].value.len) { | |
| 700 tmp_len = header[i].value.len; | |
| 701 } | |
| 702 } | |
| 703 } | |
| 704 | |
| 705 /* continuation frames */ | |
| 706 | |
| 707 len += sizeof(ngx_http_grpc_frame_t) | |
| 708 * (len / NGX_HTTP_V2_DEFAULT_FRAME_SIZE); | |
| 709 | |
| 710 | |
| 711 b = ngx_create_temp_buf(r->pool, len); | |
| 712 if (b == NULL) { | |
| 713 return NGX_ERROR; | |
| 714 } | |
| 715 | |
| 716 cl = ngx_alloc_chain_link(r->pool); | |
| 717 if (cl == NULL) { | |
| 718 return NGX_ERROR; | |
| 719 } | |
| 720 | |
| 721 cl->buf = b; | |
| 722 cl->next = NULL; | |
| 723 | |
| 724 tmp = ngx_palloc(r->pool, tmp_len * 3); | |
| 725 if (tmp == NULL) { | |
| 726 return NGX_ERROR; | |
| 727 } | |
| 728 | |
| 729 key_tmp = tmp + tmp_len; | |
| 730 val_tmp = tmp + 2 * tmp_len; | |
| 731 | |
| 732 /* connection preface */ | |
| 733 | |
| 734 b->last = ngx_copy(b->last, ngx_http_grpc_connection_start, | |
| 735 sizeof(ngx_http_grpc_connection_start) - 1); | |
| 736 | |
| 737 /* headers frame */ | |
| 738 | |
| 739 headers_frame = b->last; | |
| 740 | |
| 741 f = (ngx_http_grpc_frame_t *) b->last; | |
| 742 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 743 | |
| 744 f->length_0 = 0; | |
| 745 f->length_1 = 0; | |
| 746 f->length_2 = 0; | |
| 747 f->type = NGX_HTTP_V2_HEADERS_FRAME; | |
| 748 f->flags = 0; | |
| 749 f->stream_id_0 = 0; | |
| 750 f->stream_id_1 = 0; | |
| 751 f->stream_id_2 = 0; | |
| 752 f->stream_id_3 = 1; | |
| 753 | |
| 754 if (r->method == NGX_HTTP_GET) { | |
| 755 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_GET_INDEX); | |
| 756 | |
| 757 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 758 "grpc header: \":method: GET\""); | |
| 759 | |
| 760 } else if (r->method == NGX_HTTP_POST) { | |
| 761 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_POST_INDEX); | |
| 762 | |
| 763 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 764 "grpc header: \":method: POST\""); | |
| 765 | |
| 766 } else { | |
| 767 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_METHOD_INDEX); | |
| 768 b->last = ngx_http_v2_write_value(b->last, r->method_name.data, | |
| 769 r->method_name.len, tmp); | |
| 770 | |
| 771 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 772 "grpc header: \":method: %V\"", &r->method_name); | |
| 773 } | |
| 774 | |
| 775 #if (NGX_HTTP_SSL) | |
| 776 if (glcf->ssl) { | |
| 777 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTPS_INDEX); | |
| 778 | |
| 779 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 780 "grpc header: \":scheme: https\""); | |
| 781 } else | |
| 782 #endif | |
| 783 { | |
| 784 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTP_INDEX); | |
| 785 | |
| 786 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 787 "grpc header: \":scheme: http\""); | |
| 788 } | |
| 789 | |
| 790 if (r->valid_unparsed_uri) { | |
| 791 | |
| 792 if (r->unparsed_uri.len == 1 && r->unparsed_uri.data[0] == '/') { | |
| 793 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_PATH_ROOT_INDEX); | |
| 794 | |
| 795 } else { | |
| 796 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 797 b->last = ngx_http_v2_write_value(b->last, r->unparsed_uri.data, | |
| 798 r->unparsed_uri.len, tmp); | |
| 799 } | |
| 800 | |
| 801 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 802 "grpc header: \":path: %V\"", &r->unparsed_uri); | |
| 803 | |
| 804 } else if (escape || r->args.len > 0) { | |
| 805 p = val_tmp; | |
| 806 | |
| 807 if (escape) { | |
| 808 p = (u_char *) ngx_escape_uri(p, r->uri.data, r->uri.len, | |
| 809 NGX_ESCAPE_URI); | |
| 810 | |
| 811 } else { | |
| 812 p = ngx_copy(p, r->uri.data, r->uri.len); | |
| 813 } | |
| 814 | |
| 815 if (r->args.len > 0) { | |
| 816 *p++ = '?'; | |
| 817 p = ngx_copy(p, r->args.data, r->args.len); | |
| 818 } | |
| 819 | |
| 820 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 821 b->last = ngx_http_v2_write_value(b->last, val_tmp, p - val_tmp, tmp); | |
| 822 | |
| 823 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 824 "grpc header: \":path: %*s\"", p - val_tmp, val_tmp); | |
| 825 | |
| 826 } else { | |
| 827 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 828 b->last = ngx_http_v2_write_value(b->last, r->uri.data, | |
| 829 r->uri.len, tmp); | |
| 830 | |
| 831 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 832 "grpc header: \":path: %V\"", &r->uri); | |
| 833 } | |
| 834 | |
| 835 if (!glcf->host_set) { | |
| 836 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_AUTHORITY_INDEX); | |
| 837 b->last = ngx_http_v2_write_value(b->last, glcf->host.data, | |
| 838 glcf->host.len, tmp); | |
| 839 | |
| 840 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 841 "grpc header: \":authority: %V\"", &glcf->host); | |
| 842 } | |
| 843 | |
| 844 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
| 845 | |
| 846 e.ip = glcf->headers.values->elts; | |
| 847 e.request = r; | |
| 848 e.flushed = 1; | |
| 849 | |
| 850 le.ip = glcf->headers.lengths->elts; | |
| 851 | |
| 852 while (*(uintptr_t *) le.ip) { | |
| 853 | |
| 854 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 855 key_len = lcode(&le); | |
| 856 | |
| 857 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
| 858 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 859 } | |
| 860 le.ip += sizeof(uintptr_t); | |
| 861 | |
| 862 if (val_len == 0) { | |
| 863 e.skip = 1; | |
| 864 | |
| 865 while (*(uintptr_t *) e.ip) { | |
| 866 code = *(ngx_http_script_code_pt *) e.ip; | |
| 867 code((ngx_http_script_engine_t *) &e); | |
| 868 } | |
| 869 e.ip += sizeof(uintptr_t); | |
| 870 | |
| 871 e.skip = 0; | |
| 872 | |
| 873 continue; | |
| 874 } | |
| 875 | |
| 876 *b->last++ = 0; | |
| 877 | |
| 878 e.pos = key_tmp; | |
| 879 | |
| 880 code = *(ngx_http_script_code_pt *) e.ip; | |
| 881 code((ngx_http_script_engine_t *) &e); | |
| 882 | |
| 883 b->last = ngx_http_v2_write_name(b->last, key_tmp, key_len, tmp); | |
| 884 | |
| 885 e.pos = val_tmp; | |
| 886 | |
| 887 while (*(uintptr_t *) e.ip) { | |
| 888 code = *(ngx_http_script_code_pt *) e.ip; | |
| 889 code((ngx_http_script_engine_t *) &e); | |
| 890 } | |
| 891 e.ip += sizeof(uintptr_t); | |
| 892 | |
| 893 b->last = ngx_http_v2_write_value(b->last, val_tmp, val_len, tmp); | |
| 894 | |
| 895 #if (NGX_DEBUG) | |
| 896 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 897 ngx_strlow(key_tmp, key_tmp, key_len); | |
| 898 | |
| 899 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 900 "grpc header: \"%*s: %*s\"", | |
| 901 key_len, key_tmp, val_len, val_tmp); | |
| 902 } | |
| 903 #endif | |
| 904 } | |
| 905 | |
| 906 if (glcf->upstream.pass_request_headers) { | |
| 907 part = &r->headers_in.headers.part; | |
| 908 header = part->elts; | |
| 909 | |
| 910 for (i = 0; /* void */; i++) { | |
| 911 | |
| 912 if (i >= part->nelts) { | |
| 913 if (part->next == NULL) { | |
| 914 break; | |
| 915 } | |
| 916 | |
| 917 part = part->next; | |
| 918 header = part->elts; | |
| 919 i = 0; | |
| 920 } | |
| 921 | |
| 922 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
| 923 header[i].lowcase_key, header[i].key.len)) | |
| 924 { | |
| 925 continue; | |
| 926 } | |
| 927 | |
| 928 *b->last++ = 0; | |
| 929 | |
| 930 b->last = ngx_http_v2_write_name(b->last, header[i].key.data, | |
| 931 header[i].key.len, tmp); | |
| 932 | |
| 933 b->last = ngx_http_v2_write_value(b->last, header[i].value.data, | |
| 934 header[i].value.len, tmp); | |
| 935 | |
| 936 #if (NGX_DEBUG) | |
| 937 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 938 ngx_strlow(tmp, header[i].key.data, header[i].key.len); | |
| 939 | |
| 940 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 941 "grpc header: \"%*s: %V\"", | |
| 942 header[i].key.len, tmp, &header[i].value); | |
| 943 } | |
| 944 #endif | |
| 945 } | |
| 946 } | |
| 947 | |
| 948 /* update headers frame length */ | |
| 949 | |
| 950 len = b->last - headers_frame - sizeof(ngx_http_grpc_frame_t); | |
| 951 | |
| 952 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 953 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 954 next = 1; | |
| 955 | |
| 956 } else { | |
| 957 next = 0; | |
| 958 } | |
| 959 | |
| 960 f = (ngx_http_grpc_frame_t *) headers_frame; | |
| 961 | |
| 962 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 963 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 964 f->length_2 = (u_char) (len & 0xff); | |
| 965 | |
| 966 /* create additional continuation frames */ | |
| 967 | |
| 968 p = headers_frame; | |
| 969 | |
| 970 while (next) { | |
| 971 p += sizeof(ngx_http_grpc_frame_t) + NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 972 len = b->last - p; | |
| 973 | |
| 974 ngx_memmove(p + sizeof(ngx_http_grpc_frame_t), p, len); | |
| 975 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 976 | |
| 977 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 978 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 979 next = 1; | |
| 980 | |
| 981 } else { | |
| 982 next = 0; | |
| 983 } | |
| 984 | |
| 985 f = (ngx_http_grpc_frame_t *) p; | |
| 986 | |
| 987 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 988 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 989 f->length_2 = (u_char) (len & 0xff); | |
| 990 f->type = NGX_HTTP_V2_CONTINUATION_FRAME; | |
| 991 f->flags = 0; | |
| 992 f->stream_id_0 = 0; | |
| 993 f->stream_id_1 = 0; | |
| 994 f->stream_id_2 = 0; | |
| 995 f->stream_id_3 = 1; | |
| 996 } | |
| 997 | |
| 998 f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG; | |
| 999 | |
| 1000 #if (NGX_DEBUG) | |
| 1001 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 1002 u_char buf[512]; | |
| 1003 size_t n, m; | |
| 1004 | |
| 1005 n = ngx_min(b->last - b->pos, 256); | |
| 1006 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
| 1007 | |
| 1008 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1009 "grpc header: %*s%s, len: %uz", | |
| 1010 m, buf, b->last - b->pos > 256 ? "..." : "", | |
| 1011 b->last - b->pos); | |
| 1012 } | |
| 1013 #endif | |
| 1014 | |
| 1015 if (r->request_body_no_buffering) { | |
| 1016 | |
| 1017 u->request_bufs = cl; | |
| 1018 | |
| 1019 } else { | |
| 1020 | |
| 1021 body = u->request_bufs; | |
| 1022 u->request_bufs = cl; | |
| 1023 | |
| 1024 if (body == NULL) { | |
| 1025 f = (ngx_http_grpc_frame_t *) headers_frame; | |
| 1026 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1027 } | |
| 1028 | |
| 1029 while (body) { | |
| 1030 b = ngx_alloc_buf(r->pool); | |
| 1031 if (b == NULL) { | |
| 1032 return NGX_ERROR; | |
| 1033 } | |
| 1034 | |
| 1035 ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); | |
| 1036 | |
| 1037 cl->next = ngx_alloc_chain_link(r->pool); | |
| 1038 if (cl->next == NULL) { | |
| 1039 return NGX_ERROR; | |
| 1040 } | |
| 1041 | |
| 1042 cl = cl->next; | |
| 1043 cl->buf = b; | |
| 1044 | |
| 1045 body = body->next; | |
| 1046 } | |
| 1047 | |
| 1048 b->last_buf = 1; | |
| 1049 } | |
| 1050 | |
| 1051 u->output.output_filter = ngx_http_grpc_body_output_filter; | |
| 1052 u->output.filter_ctx = r; | |
| 1053 | |
| 1054 b->flush = 1; | |
| 1055 cl->next = NULL; | |
| 1056 | |
| 1057 return NGX_OK; | |
| 1058 } | |
| 1059 | |
| 1060 | |
| 1061 static ngx_int_t | |
| 1062 ngx_http_grpc_reinit_request(ngx_http_request_t *r) | |
| 1063 { | |
| 1064 ngx_http_grpc_ctx_t *ctx; | |
| 1065 | |
| 1066 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
| 1067 | |
| 1068 if (ctx == NULL) { | |
| 1069 return NGX_OK; | |
| 1070 } | |
| 1071 | |
| 1072 ctx->state = 0; | |
| 1073 ctx->header_sent = 0; | |
| 1074 ctx->output_closed = 0; | |
| 1075 ctx->parsing_headers = 0; | |
| 1076 ctx->end_stream = 0; | |
| 1077 ctx->status = 0; | |
| 1078 ctx->connection = NULL; | |
| 1079 | |
| 1080 return NGX_OK; | |
| 1081 } | |
| 1082 | |
| 1083 | |
| 1084 static ngx_int_t | |
| 1085 ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in) | |
| 1086 { | |
| 1087 ngx_http_request_t *r = data; | |
| 1088 | |
| 1089 off_t file_pos; | |
| 1090 u_char *p, *pos, *start; | |
| 1091 size_t len, limit; | |
| 1092 ngx_buf_t *b; | |
| 1093 ngx_int_t rc; | |
| 1094 ngx_uint_t next, last; | |
| 1095 ngx_chain_t *cl, *out, **ll; | |
| 1096 ngx_http_grpc_ctx_t *ctx; | |
| 1097 ngx_http_grpc_frame_t *f; | |
| 1098 | |
| 1099 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1100 "grpc output filter"); | |
| 1101 | |
| 1102 ctx = ngx_http_grpc_get_ctx(r); | |
| 1103 | |
| 1104 if (ctx == NULL) { | |
| 1105 return NGX_ERROR; | |
| 1106 } | |
| 1107 | |
| 1108 if (in) { | |
| 1109 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { | |
| 1110 return NGX_ERROR; | |
| 1111 } | |
| 1112 } | |
| 1113 | |
| 1114 out = NULL; | |
| 1115 ll = &out; | |
| 1116 | |
| 1117 if (!ctx->header_sent) { | |
| 1118 /* first buffer contains headers */ | |
| 1119 | |
| 1120 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1121 "grpc output header"); | |
| 1122 | |
| 1123 ctx->header_sent = 1; | |
| 1124 | |
| 1125 if (ctx->id != 1) { | |
| 1126 /* | |
| 1127 * keepalive connection: skip connection preface, | |
| 1128 * update stream identifiers | |
| 1129 */ | |
| 1130 | |
| 1131 b = ctx->in->buf; | |
| 1132 b->pos += sizeof(ngx_http_grpc_connection_start) - 1; | |
| 1133 | |
| 1134 p = b->pos; | |
| 1135 | |
| 1136 while (p < b->last) { | |
| 1137 f = (ngx_http_grpc_frame_t *) p; | |
| 1138 p += sizeof(ngx_http_grpc_frame_t); | |
| 1139 | |
| 1140 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1141 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1142 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1143 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1144 | |
| 1145 p += (f->length_0 << 16) + (f->length_1 << 8) + f->length_2; | |
| 1146 } | |
| 1147 } | |
| 1148 | |
| 1149 if (ctx->in->buf->last_buf) { | |
| 1150 ctx->output_closed = 1; | |
| 1151 } | |
| 1152 | |
| 1153 *ll = ctx->in; | |
| 1154 ll = &ctx->in->next; | |
| 1155 | |
| 1156 ctx->in = ctx->in->next; | |
| 1157 } | |
| 1158 | |
| 1159 if (ctx->out) { | |
| 1160 /* queued control frames */ | |
| 1161 | |
| 1162 *ll = ctx->out; | |
| 1163 | |
| 1164 for (cl = ctx->out, ll = &cl->next; cl; cl = cl->next) { | |
| 1165 ll = &cl->next; | |
| 1166 } | |
| 1167 | |
| 1168 ctx->out = NULL; | |
| 1169 } | |
| 1170 | |
| 1171 f = NULL; | |
| 1172 last = 0; | |
| 1173 | |
| 1174 limit = ngx_max(0, ctx->send_window); | |
| 1175 | |
| 1176 if (limit > ctx->connection->send_window) { | |
| 1177 limit = ctx->connection->send_window; | |
| 1178 } | |
| 1179 | |
| 1180 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1181 "grpc output limit: %uz w:%z:%uz", | |
| 1182 limit, ctx->send_window, ctx->connection->send_window); | |
| 1183 | |
| 1184 #if (NGX_SUPPRESS_WARN) | |
| 1185 file_pos = 0; | |
| 1186 pos = NULL; | |
| 1187 cl = NULL; | |
| 1188 #endif | |
| 1189 | |
| 1190 in = ctx->in; | |
| 1191 | |
| 1192 while (in && limit > 0) { | |
| 1193 | |
| 1194 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
| 1195 "grpc output in l:%d f:%d %p, pos %p, size: %z " | |
| 1196 "file: %O, size: %O", | |
| 1197 in->buf->last_buf, | |
| 1198 in->buf->in_file, | |
| 1199 in->buf->start, in->buf->pos, | |
| 1200 in->buf->last - in->buf->pos, | |
| 1201 in->buf->file_pos, | |
| 1202 in->buf->file_last - in->buf->file_pos); | |
| 1203 | |
| 1204 if (ngx_buf_special(in->buf)) { | |
| 1205 goto next; | |
| 1206 } | |
| 1207 | |
| 1208 if (in->buf->in_file) { | |
| 1209 file_pos = in->buf->file_pos; | |
| 1210 | |
| 1211 } else { | |
| 1212 pos = in->buf->pos; | |
| 1213 } | |
| 1214 | |
| 1215 next = 0; | |
| 1216 | |
| 1217 do { | |
| 1218 | |
| 1219 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 1220 if (cl == NULL) { | |
| 1221 return NGX_ERROR; | |
| 1222 } | |
| 1223 | |
| 1224 b = cl->buf; | |
| 1225 | |
| 1226 f = (ngx_http_grpc_frame_t *) b->last; | |
| 1227 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 1228 | |
| 1229 *ll = cl; | |
| 1230 ll = &cl->next; | |
| 1231 | |
| 1232 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
| 1233 if (cl == NULL) { | |
| 1234 return NGX_ERROR; | |
| 1235 } | |
| 1236 | |
| 1237 b = cl->buf; | |
| 1238 start = b->start; | |
| 1239 | |
| 1240 ngx_memcpy(b, in->buf, sizeof(ngx_buf_t)); | |
| 1241 | |
| 1242 /* | |
| 1243 * restore b->start to preserve memory allocated in the buffer, | |
| 1244 * to reuse it later for headers and control frames | |
| 1245 */ | |
| 1246 | |
| 1247 b->start = start; | |
| 1248 | |
| 1249 if (in->buf->in_file) { | |
| 1250 b->file_pos = file_pos; | |
| 1251 file_pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
| 1252 | |
| 1253 if (file_pos >= in->buf->file_last) { | |
| 1254 file_pos = in->buf->file_last; | |
| 1255 next = 1; | |
| 1256 } | |
| 1257 | |
| 1258 b->file_last = file_pos; | |
| 1259 len = (ngx_uint_t) (file_pos - b->file_pos); | |
| 1260 | |
| 1261 } else { | |
| 1262 b->pos = pos; | |
| 1263 pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
| 1264 | |
| 1265 if (pos >= in->buf->last) { | |
| 1266 pos = in->buf->last; | |
| 1267 next = 1; | |
| 1268 } | |
| 1269 | |
| 1270 b->last = pos; | |
| 1271 len = (ngx_uint_t) (pos - b->pos); | |
| 1272 } | |
| 1273 | |
| 1274 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
| 1275 b->shadow = in->buf; | |
| 1276 b->last_shadow = next; | |
| 1277 | |
| 1278 b->last_buf = 0; | |
| 1279 b->last_in_chain = 0; | |
| 1280 | |
| 1281 *ll = cl; | |
| 1282 ll = &cl->next; | |
| 1283 | |
| 1284 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 1285 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 1286 f->length_2 = (u_char) (len & 0xff); | |
| 1287 f->type = NGX_HTTP_V2_DATA_FRAME; | |
| 1288 f->flags = 0; | |
| 1289 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1290 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1291 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1292 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1293 | |
| 1294 limit -= len; | |
| 1295 ctx->send_window -= len; | |
| 1296 ctx->connection->send_window -= len; | |
| 1297 | |
| 1298 } while (!next && limit > 0); | |
| 1299 | |
| 1300 if (!next) { | |
| 1301 /* | |
| 1302 * if the buffer wasn't fully sent due to flow control limits, | |
| 1303 * preserve position for future use | |
| 1304 */ | |
| 1305 | |
| 1306 if (in->buf->in_file) { | |
| 1307 in->buf->file_pos = file_pos; | |
| 1308 | |
| 1309 } else { | |
| 1310 in->buf->pos = pos; | |
| 1311 } | |
| 1312 | |
| 1313 break; | |
| 1314 } | |
| 1315 | |
| 1316 next: | |
| 1317 | |
| 1318 if (in->buf->last_buf) { | |
| 1319 last = 1; | |
| 1320 } | |
| 1321 | |
| 1322 in = in->next; | |
| 1323 } | |
| 1324 | |
| 1325 ctx->in = in; | |
| 1326 | |
| 1327 if (last) { | |
| 1328 | |
| 1329 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1330 "grpc output last"); | |
| 1331 | |
| 1332 ctx->output_closed = 1; | |
| 1333 | |
| 1334 if (f) { | |
| 1335 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1336 | |
| 1337 } else { | |
| 1338 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 1339 if (cl == NULL) { | |
| 1340 return NGX_ERROR; | |
| 1341 } | |
| 1342 | |
| 1343 b = cl->buf; | |
| 1344 | |
| 1345 f = (ngx_http_grpc_frame_t *) b->last; | |
| 1346 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 1347 | |
| 1348 f->length_0 = 0; | |
| 1349 f->length_1 = 0; | |
| 1350 f->length_2 = 0; | |
| 1351 f->type = NGX_HTTP_V2_DATA_FRAME; | |
| 1352 f->flags = NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1353 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1354 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1355 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1356 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1357 | |
| 1358 *ll = cl; | |
| 1359 ll = &cl->next; | |
| 1360 } | |
| 1361 | |
| 1362 cl->buf->last_buf = 1; | |
| 1363 } | |
| 1364 | |
| 1365 *ll = NULL; | |
| 1366 | |
| 1367 #if (NGX_DEBUG) | |
| 1368 | |
| 1369 for (cl = out; cl; cl = cl->next) { | |
| 1370 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
| 1371 "grpc output out l:%d f:%d %p, pos %p, size: %z " | |
| 1372 "file: %O, size: %O", | |
| 1373 cl->buf->last_buf, | |
| 1374 cl->buf->in_file, | |
| 1375 cl->buf->start, cl->buf->pos, | |
| 1376 cl->buf->last - cl->buf->pos, | |
| 1377 cl->buf->file_pos, | |
| 1378 cl->buf->file_last - cl->buf->file_pos); | |
| 1379 } | |
| 1380 | |
| 1381 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1382 "grpc output limit: %uz w:%z:%uz", | |
| 1383 limit, ctx->send_window, ctx->connection->send_window); | |
| 1384 | |
| 1385 #endif | |
| 1386 | |
| 1387 rc = ngx_chain_writer(&r->upstream->writer, out); | |
| 1388 | |
| 1389 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, | |
| 1390 (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter); | |
| 1391 | |
| 1392 for (cl = ctx->free; cl; cl = cl->next) { | |
| 1393 | |
| 1394 /* mark original buffers as sent */ | |
| 1395 | |
| 1396 if (cl->buf->shadow) { | |
| 1397 if (cl->buf->last_shadow) { | |
| 1398 b = cl->buf->shadow; | |
| 1399 b->pos = b->last; | |
| 1400 } | |
| 1401 | |
| 1402 cl->buf->shadow = NULL; | |
| 1403 } | |
| 1404 } | |
| 1405 | |
| 1406 if (rc == NGX_OK && ctx->in) { | |
| 1407 rc = NGX_AGAIN; | |
| 1408 } | |
| 1409 | |
| 1410 return rc; | |
| 1411 } | |
| 1412 | |
| 1413 | |
| 1414 static ngx_int_t | |
| 1415 ngx_http_grpc_process_header(ngx_http_request_t *r) | |
| 1416 { | |
| 1417 ngx_str_t *status_line; | |
| 1418 ngx_int_t rc, status; | |
| 1419 ngx_buf_t *b; | |
| 1420 ngx_table_elt_t *h; | |
| 1421 ngx_http_upstream_t *u; | |
| 1422 ngx_http_grpc_ctx_t *ctx; | |
| 1423 ngx_http_upstream_header_t *hh; | |
| 1424 ngx_http_upstream_main_conf_t *umcf; | |
| 1425 | |
| 1426 u = r->upstream; | |
| 1427 b = &u->buffer; | |
| 1428 | |
| 1429 #if (NGX_DEBUG) | |
| 1430 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 1431 u_char buf[512]; | |
| 1432 size_t n, m; | |
| 1433 | |
| 1434 n = ngx_min(b->last - b->pos, 256); | |
| 1435 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
| 1436 | |
| 1437 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1438 "grpc response: %*s%s, len: %uz", | |
| 1439 m, buf, b->last - b->pos > 256 ? "..." : "", | |
| 1440 b->last - b->pos); | |
| 1441 } | |
| 1442 #endif | |
| 1443 | |
| 1444 ctx = ngx_http_grpc_get_ctx(r); | |
| 1445 | |
| 1446 if (ctx == NULL) { | |
| 1447 return NGX_ERROR; | |
| 1448 } | |
| 1449 | |
| 1450 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); | |
| 1451 | |
| 1452 for ( ;; ) { | |
| 1453 | |
| 1454 if (ctx->state < ngx_http_grpc_st_payload) { | |
| 1455 | |
| 1456 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
| 1457 | |
| 1458 if (rc == NGX_AGAIN) { | |
| 1459 | |
| 1460 /* | |
| 1461 * there can be a lot of window update frames, | |
| 1462 * so we reset buffer if it is empty and we haven't | |
| 1463 * started parsing headers yet | |
| 1464 */ | |
| 1465 | |
| 1466 if (!ctx->parsing_headers) { | |
| 1467 b->pos = b->start; | |
| 1468 b->last = b->pos; | |
| 1469 } | |
| 1470 | |
| 1471 return NGX_AGAIN; | |
| 1472 } | |
| 1473 | |
| 1474 if (rc == NGX_ERROR) { | |
| 1475 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1476 } | |
| 1477 | |
| 1478 /* | |
| 1479 * RFC 7540 says that implementations MUST discard frames | |
| 1480 * that have unknown or unsupported types. However, extension | |
| 1481 * frames that appear in the middle of a header block are | |
| 1482 * not permitted. Also, for obvious reasons CONTINUATION frames | |
| 1483 * cannot appear before headers, and DATA frames are not expected | |
| 1484 * to appear before all headers are parsed. | |
| 1485 */ | |
| 1486 | |
| 1487 if (ctx->type == NGX_HTTP_V2_DATA_FRAME | |
| 1488 || (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1489 && !ctx->parsing_headers) | |
| 1490 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1491 && ctx->parsing_headers)) | |
| 1492 { | |
| 1493 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1494 "upstream sent unexpected http2 frame: %d", | |
| 1495 ctx->type); | |
| 1496 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1497 } | |
| 1498 | |
| 1499 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
| 1500 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1501 "upstream sent frame for unknown stream %ui", | |
| 1502 ctx->stream_id); | |
| 1503 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1504 } | |
| 1505 } | |
| 1506 | |
| 1507 /* frame payload */ | |
| 1508 | |
| 1509 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
| 1510 | |
| 1511 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
| 1512 | |
| 1513 if (rc == NGX_AGAIN) { | |
| 1514 return NGX_AGAIN; | |
| 1515 } | |
| 1516 | |
| 1517 if (rc == NGX_ERROR) { | |
| 1518 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1519 } | |
| 1520 | |
| 1521 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1522 "upstream rejected request with error %ui", | |
| 1523 ctx->error); | |
| 1524 | |
| 1525 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1526 } | |
| 1527 | |
| 1528 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
| 1529 | |
| 1530 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
| 1531 | |
| 1532 if (rc == NGX_AGAIN) { | |
| 1533 return NGX_AGAIN; | |
| 1534 } | |
| 1535 | |
| 1536 if (rc == NGX_ERROR) { | |
| 1537 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1538 } | |
| 1539 | |
| 1540 /* | |
| 1541 * If stream_id is lower than one we use, our | |
| 1542 * request won't be processed and needs to be retried. | |
| 1543 * If stream_id is greater or equal to the one we use, | |
| 1544 * we can continue normally (except we can't use this | |
| 1545 * connection for additional requests). If there is | |
| 1546 * a real error, the connection will be closed. | |
| 1547 */ | |
| 1548 | |
| 1549 if (ctx->stream_id < ctx->id) { | |
| 1550 | |
| 1551 /* TODO: we can retry non-idempotent requests */ | |
| 1552 | |
| 1553 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1554 "upstream sent goaway with error %ui", | |
| 1555 ctx->error); | |
| 1556 | |
| 1557 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1558 } | |
| 1559 | |
| 1560 continue; | |
| 1561 } | |
| 1562 | |
| 1563 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
| 1564 | |
| 1565 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
| 1566 | |
| 1567 if (rc == NGX_AGAIN) { | |
| 1568 return NGX_AGAIN; | |
| 1569 } | |
| 1570 | |
| 1571 if (rc == NGX_ERROR) { | |
| 1572 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1573 } | |
| 1574 | |
| 1575 if (ctx->in) { | |
| 1576 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1577 } | |
| 1578 | |
| 1579 continue; | |
| 1580 } | |
| 1581 | |
| 1582 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
| 1583 | |
| 1584 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
| 1585 | |
| 1586 if (rc == NGX_AGAIN) { | |
| 1587 return NGX_AGAIN; | |
| 1588 } | |
| 1589 | |
| 1590 if (rc == NGX_ERROR) { | |
| 1591 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1592 } | |
| 1593 | |
| 1594 if (ctx->in) { | |
| 1595 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1596 } | |
| 1597 | |
| 1598 continue; | |
| 1599 } | |
| 1600 | |
| 1601 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
| 1602 | |
| 1603 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
| 1604 | |
| 1605 if (rc == NGX_AGAIN) { | |
| 1606 return NGX_AGAIN; | |
| 1607 } | |
| 1608 | |
| 1609 if (rc == NGX_ERROR) { | |
| 1610 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1611 } | |
| 1612 | |
| 1613 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1614 continue; | |
| 1615 } | |
| 1616 | |
| 1617 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
| 1618 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1619 "upstream sent unexpected push promise frame"); | |
| 1620 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1621 } | |
| 1622 | |
| 1623 if (ctx->type != NGX_HTTP_V2_HEADERS_FRAME | |
| 1624 && ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME) | |
| 1625 { | |
| 1626 /* priority, unknown frames */ | |
| 1627 | |
| 1628 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 1629 ctx->rest -= b->last - b->pos; | |
| 1630 b->pos = b->last; | |
| 1631 return NGX_AGAIN; | |
| 1632 } | |
| 1633 | |
| 1634 b->pos += ctx->rest; | |
| 1635 ctx->rest = 0; | |
| 1636 ctx->state = ngx_http_grpc_st_start; | |
| 1637 | |
| 1638 continue; | |
| 1639 } | |
| 1640 | |
| 1641 /* headers */ | |
| 1642 | |
| 1643 for ( ;; ) { | |
| 1644 | |
| 1645 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
| 1646 | |
| 1647 if (rc == NGX_AGAIN) { | |
| 1648 break; | |
| 1649 } | |
| 1650 | |
| 1651 if (rc == NGX_OK) { | |
| 1652 | |
| 1653 /* a header line has been parsed successfully */ | |
| 1654 | |
| 1655 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1656 "grpc header: \"%V: %V\"", | |
| 1657 &ctx->name, &ctx->value); | |
| 1658 | |
| 1659 if (ctx->name.len && ctx->name.data[0] == ':') { | |
| 1660 | |
| 1661 if (ctx->name.len != sizeof(":status") - 1 | |
| 1662 || ngx_strncmp(ctx->name.data, ":status", | |
| 1663 sizeof(":status") - 1) | |
| 1664 != 0) | |
| 1665 { | |
| 1666 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1667 "upstream sent invalid header \"%V: %V\"", | |
| 1668 &ctx->name, &ctx->value); | |
| 1669 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1670 } | |
| 1671 | |
| 1672 if (ctx->status) { | |
| 1673 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1674 "upstream sent duplicate :status header"); | |
| 1675 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1676 } | |
| 1677 | |
| 1678 status_line = &ctx->value; | |
| 1679 | |
| 1680 if (status_line->len != 3) { | |
| 1681 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1682 "upstream sent invalid :status \"%V\"", | |
| 1683 status_line); | |
| 1684 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1685 } | |
| 1686 | |
| 1687 status = ngx_atoi(status_line->data, 3); | |
| 1688 | |
| 1689 if (status == NGX_ERROR) { | |
| 1690 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1691 "upstream sent invalid :status \"%V\"", | |
| 1692 status_line); | |
| 1693 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1694 } | |
| 1695 | |
| 1696 if (status < NGX_HTTP_OK) { | |
| 1697 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1698 "upstream sent unexpected :status \"%V\"", | |
| 1699 status_line); | |
| 1700 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1701 } | |
| 1702 | |
| 1703 u->headers_in.status_n = status; | |
| 1704 | |
| 1705 if (u->state && u->state->status == 0) { | |
| 1706 u->state->status = status; | |
| 1707 } | |
| 1708 | |
| 1709 ctx->status = 1; | |
| 1710 | |
| 1711 continue; | |
| 1712 | |
| 1713 } else if (!ctx->status) { | |
| 1714 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1715 "upstream sent no :status header"); | |
| 1716 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1717 } | |
| 1718 | |
| 1719 h = ngx_list_push(&u->headers_in.headers); | |
| 1720 if (h == NULL) { | |
| 1721 return NGX_ERROR; | |
| 1722 } | |
| 1723 | |
| 1724 h->key = ctx->name; | |
| 1725 h->value = ctx->value; | |
| 1726 h->lowcase_key = h->key.data; | |
| 1727 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
| 1728 | |
| 1729 hh = ngx_hash_find(&umcf->headers_in_hash, h->hash, | |
| 1730 h->lowcase_key, h->key.len); | |
| 1731 | |
| 1732 if (hh && hh->handler(r, h, hh->offset) != NGX_OK) { | |
| 1733 return NGX_ERROR; | |
| 1734 } | |
| 1735 | |
| 1736 continue; | |
| 1737 } | |
| 1738 | |
| 1739 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
| 1740 | |
| 1741 /* a whole header has been parsed successfully */ | |
| 1742 | |
| 1743 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1744 "grpc header done"); | |
| 1745 | |
| 1746 if (ctx->end_stream | |
| 1747 && ctx->in == NULL | |
| 1748 && ctx->out == NULL | |
| 1749 && ctx->output_closed | |
| 1750 && b->last == b->pos) | |
| 1751 { | |
| 1752 u->keepalive = 1; | |
| 1753 } | |
| 1754 | |
| 1755 return NGX_OK; | |
| 1756 } | |
| 1757 | |
| 1758 /* there was error while a header line parsing */ | |
| 1759 | |
| 1760 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1761 "upstream sent invalid header"); | |
| 1762 | |
| 1763 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1764 } | |
| 1765 | |
| 1766 /* rc == NGX_AGAIN */ | |
| 1767 | |
| 1768 if (ctx->rest == 0) { | |
| 1769 ctx->state = ngx_http_grpc_st_start; | |
| 1770 continue; | |
| 1771 } | |
| 1772 | |
| 1773 return NGX_AGAIN; | |
| 1774 } | |
| 1775 } | |
| 1776 | |
| 1777 | |
| 1778 static ngx_int_t | |
| 1779 ngx_http_grpc_filter_init(void *data) | |
| 1780 { | |
| 1781 ngx_http_grpc_ctx_t *ctx = data; | |
| 1782 | |
| 1783 ngx_http_request_t *r; | |
| 1784 ngx_http_upstream_t *u; | |
| 1785 | |
| 1786 r = ctx->request; | |
| 1787 u = r->upstream; | |
| 1788 | |
| 1789 u->length = 1; | |
| 1790 | |
| 1791 if (ctx->end_stream) { | |
| 1792 u->length = 0; | |
| 1793 } | |
| 1794 | |
| 1795 return NGX_OK; | |
| 1796 } | |
| 1797 | |
| 1798 | |
| 1799 static ngx_int_t | |
| 1800 ngx_http_grpc_filter(void *data, ssize_t bytes) | |
| 1801 { | |
| 1802 ngx_http_grpc_ctx_t *ctx = data; | |
| 1803 | |
| 1804 ngx_int_t rc; | |
| 1805 ngx_buf_t *b, *buf; | |
| 1806 ngx_chain_t *cl, **ll; | |
| 1807 ngx_table_elt_t *h; | |
| 1808 ngx_http_request_t *r; | |
| 1809 ngx_http_upstream_t *u; | |
| 1810 | |
| 1811 r = ctx->request; | |
| 1812 u = r->upstream; | |
| 1813 b = &u->buffer; | |
| 1814 | |
| 1815 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1816 "grpc filter bytes:%z", bytes); | |
| 1817 | |
| 1818 b->pos = b->last; | |
| 1819 b->last += bytes; | |
| 1820 | |
| 1821 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
| 1822 ll = &cl->next; | |
| 1823 } | |
| 1824 | |
| 1825 for ( ;; ) { | |
| 1826 | |
| 1827 if (ctx->state < ngx_http_grpc_st_payload) { | |
| 1828 | |
| 1829 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
| 1830 | |
| 1831 if (rc == NGX_AGAIN) { | |
| 1832 return NGX_AGAIN; | |
| 1833 } | |
| 1834 | |
| 1835 if (rc == NGX_ERROR) { | |
| 1836 return NGX_ERROR; | |
| 1837 } | |
| 1838 | |
| 1839 if ((ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1840 && !ctx->parsing_headers) | |
| 1841 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1842 && ctx->parsing_headers)) | |
| 1843 { | |
| 1844 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1845 "upstream sent unexpected http2 frame: %d", | |
| 1846 ctx->type); | |
| 1847 return NGX_ERROR; | |
| 1848 } | |
| 1849 | |
| 1850 if (ctx->type == NGX_HTTP_V2_DATA_FRAME) { | |
| 1851 | |
| 1852 if (ctx->stream_id != ctx->id) { | |
| 1853 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1854 "upstream sent data frame " | |
| 1855 "for unknown stream %ui", | |
| 1856 ctx->stream_id); | |
| 1857 return NGX_ERROR; | |
| 1858 } | |
| 1859 | |
| 1860 if (ctx->rest > ctx->recv_window) { | |
| 1861 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1862 "upstream violated stream flow control, " | |
| 1863 "received %uz data frame with window %uz", | |
| 1864 ctx->rest, ctx->recv_window); | |
| 1865 return NGX_ERROR; | |
| 1866 } | |
| 1867 | |
| 1868 if (ctx->rest > ctx->connection->recv_window) { | |
| 1869 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1870 "upstream violated connection flow control, " | |
| 1871 "received %uz data frame with window %uz", | |
| 1872 ctx->rest, ctx->connection->recv_window); | |
| 1873 return NGX_ERROR; | |
| 1874 } | |
| 1875 | |
| 1876 ctx->recv_window -= ctx->rest; | |
| 1877 ctx->connection->recv_window -= ctx->rest; | |
| 1878 | |
| 1879 if (ctx->connection->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4 | |
| 1880 || ctx->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4) | |
| 1881 { | |
| 1882 if (ngx_http_grpc_send_window_update(r, ctx) != NGX_OK) { | |
| 1883 return NGX_ERROR; | |
| 1884 } | |
| 1885 | |
| 1886 ngx_post_event(u->peer.connection->write, | |
| 1887 &ngx_posted_events); | |
| 1888 } | |
| 1889 } | |
| 1890 | |
| 1891 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
| 1892 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1893 "upstream sent frame for unknown stream %ui", | |
| 1894 ctx->stream_id); | |
| 1895 return NGX_ERROR; | |
| 1896 } | |
| 1897 | |
| 1898 ctx->padding = 0; | |
| 1899 } | |
| 1900 | |
| 1901 if (ctx->state == ngx_http_grpc_st_padding) { | |
| 1902 | |
| 1903 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 1904 ctx->rest -= b->last - b->pos; | |
| 1905 b->pos = b->last; | |
| 1906 return NGX_AGAIN; | |
| 1907 } | |
| 1908 | |
| 1909 b->pos += ctx->rest; | |
| 1910 ctx->rest = 0; | |
| 1911 ctx->state = ngx_http_grpc_st_start; | |
| 1912 | |
| 1913 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
| 1914 u->length = 0; | |
| 1915 | |
| 1916 if (ctx->in == NULL | |
| 1917 && ctx->out == NULL | |
| 1918 && ctx->output_closed | |
| 1919 && b->last == b->pos) | |
| 1920 { | |
| 1921 u->keepalive = 1; | |
| 1922 } | |
| 1923 | |
| 1924 break; | |
| 1925 } | |
| 1926 | |
| 1927 continue; | |
| 1928 } | |
| 1929 | |
| 1930 /* frame payload */ | |
| 1931 | |
| 1932 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
| 1933 | |
| 1934 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
| 1935 | |
| 1936 if (rc == NGX_AGAIN) { | |
| 1937 return NGX_AGAIN; | |
| 1938 } | |
| 1939 | |
| 1940 if (rc == NGX_ERROR) { | |
| 1941 return NGX_ERROR; | |
| 1942 } | |
| 1943 | |
| 1944 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1945 "upstream rejected request with error %ui", | |
| 1946 ctx->error); | |
| 1947 | |
| 1948 return NGX_ERROR; | |
| 1949 } | |
| 1950 | |
| 1951 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
| 1952 | |
| 1953 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
| 1954 | |
| 1955 if (rc == NGX_AGAIN) { | |
| 1956 return NGX_AGAIN; | |
| 1957 } | |
| 1958 | |
| 1959 if (rc == NGX_ERROR) { | |
| 1960 return NGX_ERROR; | |
| 1961 } | |
| 1962 | |
| 1963 /* | |
| 1964 * If stream_id is lower than one we use, our | |
| 1965 * request won't be processed and needs to be retried. | |
| 1966 * If stream_id is greater or equal to the one we use, | |
| 1967 * we can continue normally (except we can't use this | |
| 1968 * connection for additional requests). If there is | |
| 1969 * a real error, the connection will be closed. | |
| 1970 */ | |
| 1971 | |
| 1972 if (ctx->stream_id < ctx->id) { | |
| 1973 | |
| 1974 /* TODO: we can retry non-idempotent requests */ | |
| 1975 | |
| 1976 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1977 "upstream sent goaway with error %ui", | |
| 1978 ctx->error); | |
| 1979 | |
| 1980 return NGX_ERROR; | |
| 1981 } | |
| 1982 | |
| 1983 continue; | |
| 1984 } | |
| 1985 | |
| 1986 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
| 1987 | |
| 1988 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
| 1989 | |
| 1990 if (rc == NGX_AGAIN) { | |
| 1991 return NGX_AGAIN; | |
| 1992 } | |
| 1993 | |
| 1994 if (rc == NGX_ERROR) { | |
| 1995 return NGX_ERROR; | |
| 1996 } | |
| 1997 | |
| 1998 if (ctx->in) { | |
| 1999 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2000 } | |
| 2001 | |
| 2002 continue; | |
| 2003 } | |
| 2004 | |
| 2005 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
| 2006 | |
| 2007 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
| 2008 | |
| 2009 if (rc == NGX_AGAIN) { | |
| 2010 return NGX_AGAIN; | |
| 2011 } | |
| 2012 | |
| 2013 if (rc == NGX_ERROR) { | |
| 2014 return NGX_ERROR; | |
| 2015 } | |
| 2016 | |
| 2017 if (ctx->in) { | |
| 2018 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2019 } | |
| 2020 | |
| 2021 continue; | |
| 2022 } | |
| 2023 | |
| 2024 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
| 2025 | |
| 2026 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
| 2027 | |
| 2028 if (rc == NGX_AGAIN) { | |
| 2029 return NGX_AGAIN; | |
| 2030 } | |
| 2031 | |
| 2032 if (rc == NGX_ERROR) { | |
| 2033 return NGX_ERROR; | |
| 2034 } | |
| 2035 | |
| 2036 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2037 continue; | |
| 2038 } | |
| 2039 | |
| 2040 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
| 2041 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2042 "upstream sent unexpected push promise frame"); | |
| 2043 return NGX_ERROR; | |
| 2044 } | |
| 2045 | |
| 2046 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME | |
| 2047 || ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) | |
| 2048 { | |
| 2049 for ( ;; ) { | |
| 2050 | |
| 2051 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
| 2052 | |
| 2053 if (rc == NGX_AGAIN) { | |
| 2054 break; | |
| 2055 } | |
| 2056 | |
| 2057 if (rc == NGX_OK) { | |
| 2058 | |
| 2059 /* a header line has been parsed successfully */ | |
| 2060 | |
| 2061 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2062 "grpc trailer: \"%V: %V\"", | |
| 2063 &ctx->name, &ctx->value); | |
| 2064 | |
| 2065 if (ctx->name.len && ctx->name.data[0] == ':') { | |
| 2066 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2067 "upstream sent invalid " | |
| 2068 "trailer \"%V: %V\"", | |
| 2069 &ctx->name, &ctx->value); | |
| 2070 return NGX_ERROR; | |
| 2071 } | |
| 2072 | |
| 2073 h = ngx_list_push(&u->headers_in.trailers); | |
| 2074 if (h == NULL) { | |
| 2075 return NGX_ERROR; | |
| 2076 } | |
| 2077 | |
| 2078 h->key = ctx->name; | |
| 2079 h->value = ctx->value; | |
| 2080 h->lowcase_key = h->key.data; | |
| 2081 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
| 2082 | |
| 2083 continue; | |
| 2084 } | |
| 2085 | |
| 2086 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
| 2087 | |
| 2088 /* a whole header has been parsed successfully */ | |
| 2089 | |
| 2090 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2091 "grpc trailer done"); | |
| 2092 | |
| 2093 if (ctx->end_stream) { | |
| 2094 u->length = 0; | |
| 2095 | |
| 2096 if (ctx->in == NULL | |
| 2097 && ctx->out == NULL | |
| 2098 && ctx->output_closed | |
| 2099 && b->last == b->pos) | |
| 2100 { | |
| 2101 u->keepalive = 1; | |
| 2102 } | |
| 2103 | |
| 2104 return NGX_OK; | |
| 2105 } | |
| 2106 | |
| 2107 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2108 "upstream sent trailer without " | |
| 2109 "end stream flag"); | |
| 2110 return NGX_ERROR; | |
| 2111 } | |
| 2112 | |
| 2113 /* there was error while a header line parsing */ | |
| 2114 | |
| 2115 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2116 "upstream sent invalid trailer"); | |
| 2117 | |
| 2118 return NGX_ERROR; | |
| 2119 } | |
| 2120 | |
| 2121 /* rc == NGX_AGAIN */ | |
| 2122 | |
| 2123 if (ctx->rest == 0) { | |
| 2124 ctx->state = ngx_http_grpc_st_start; | |
| 2125 continue; | |
| 2126 } | |
| 2127 | |
| 2128 return NGX_AGAIN; | |
| 2129 } | |
| 2130 | |
| 2131 if (ctx->type != NGX_HTTP_V2_DATA_FRAME) { | |
| 2132 | |
| 2133 /* priority, unknown frames */ | |
| 2134 | |
| 2135 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2136 ctx->rest -= b->last - b->pos; | |
| 2137 b->pos = b->last; | |
| 2138 return NGX_AGAIN; | |
| 2139 } | |
| 2140 | |
| 2141 b->pos += ctx->rest; | |
| 2142 ctx->rest = 0; | |
| 2143 ctx->state = ngx_http_grpc_st_start; | |
| 2144 | |
| 2145 continue; | |
| 2146 } | |
| 2147 | |
| 2148 /* | |
| 2149 * data frame: | |
| 2150 * | |
| 2151 * +---------------+ | |
| 2152 * |Pad Length? (8)| | |
| 2153 * +---------------+-----------------------------------------------+ | |
| 2154 * | Data (*) ... | |
| 2155 * +---------------------------------------------------------------+ | |
| 2156 * | Padding (*) ... | |
| 2157 * +---------------------------------------------------------------+ | |
| 2158 */ | |
| 2159 | |
| 2160 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
| 2161 | |
| 2162 if (ctx->rest == 0) { | |
| 2163 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2164 "upstream sent too short http2 frame"); | |
| 2165 return NGX_ERROR; | |
| 2166 } | |
| 2167 | |
| 2168 if (b->pos == b->last) { | |
| 2169 return NGX_AGAIN; | |
| 2170 } | |
| 2171 | |
| 2172 ctx->flags &= ~NGX_HTTP_V2_PADDED_FLAG; | |
| 2173 ctx->padding = *b->pos++; | |
| 2174 ctx->rest -= 1; | |
| 2175 | |
| 2176 if (ctx->padding > ctx->rest) { | |
| 2177 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2178 "upstream sent http2 frame with too long " | |
| 2179 "padding: %d in frame %uz", | |
| 2180 ctx->padding, ctx->rest); | |
| 2181 return NGX_ERROR; | |
| 2182 } | |
| 2183 | |
| 2184 continue; | |
| 2185 } | |
| 2186 | |
| 2187 if (ctx->rest == ctx->padding) { | |
| 2188 goto done; | |
| 2189 } | |
| 2190 | |
| 2191 if (b->pos == b->last) { | |
| 2192 return NGX_AGAIN; | |
| 2193 } | |
| 2194 | |
| 2195 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
| 2196 if (cl == NULL) { | |
| 2197 return NGX_ERROR; | |
| 2198 } | |
| 2199 | |
| 2200 *ll = cl; | |
| 2201 ll = &cl->next; | |
| 2202 | |
| 2203 buf = cl->buf; | |
| 2204 | |
| 2205 buf->flush = 1; | |
| 2206 buf->memory = 1; | |
| 2207 | |
| 2208 buf->pos = b->pos; | |
| 2209 buf->tag = u->output.tag; | |
| 2210 | |
| 2211 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2212 "grpc output buf %p", buf->pos); | |
| 2213 | |
| 2214 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
| 2215 | |
| 2216 ctx->rest -= b->last - b->pos; | |
| 2217 b->pos = b->last; | |
| 2218 buf->last = b->pos; | |
| 2219 | |
| 2220 return NGX_AGAIN; | |
| 2221 } | |
| 2222 | |
| 2223 b->pos += ctx->rest - ctx->padding; | |
| 2224 buf->last = b->pos; | |
| 2225 ctx->rest = ctx->padding; | |
| 2226 | |
| 2227 done: | |
| 2228 | |
| 2229 if (ctx->padding) { | |
| 2230 ctx->state = ngx_http_grpc_st_padding; | |
| 2231 continue; | |
| 2232 } | |
| 2233 | |
| 2234 ctx->state = ngx_http_grpc_st_start; | |
| 2235 | |
| 2236 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
| 2237 u->length = 0; | |
| 2238 | |
| 2239 if (ctx->in == NULL | |
| 2240 && ctx->out == NULL | |
| 2241 && ctx->output_closed | |
| 2242 && b->last == b->pos) | |
| 2243 { | |
| 2244 u->keepalive = 1; | |
| 2245 } | |
| 2246 | |
| 2247 break; | |
| 2248 } | |
| 2249 } | |
| 2250 | |
| 2251 return NGX_OK; | |
| 2252 } | |
| 2253 | |
| 2254 | |
| 2255 static ngx_int_t | |
| 2256 ngx_http_grpc_parse_frame(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2257 ngx_buf_t *b) | |
| 2258 { | |
| 2259 u_char ch, *p; | |
| 2260 ngx_http_grpc_state_e state; | |
| 2261 | |
| 2262 state = ctx->state; | |
| 2263 | |
| 2264 for (p = b->pos; p < b->last; p++) { | |
| 2265 ch = *p; | |
| 2266 | |
| 2267 #if 0 | |
| 2268 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2269 "grpc frame byte: %02Xd, s:%d", ch, state); | |
| 2270 #endif | |
| 2271 | |
| 2272 switch (state) { | |
| 2273 | |
| 2274 case ngx_http_grpc_st_start: | |
| 2275 ctx->rest = ch << 16; | |
| 2276 state = ngx_http_grpc_st_length_2; | |
| 2277 break; | |
| 2278 | |
| 2279 case ngx_http_grpc_st_length_2: | |
| 2280 ctx->rest |= ch << 8; | |
| 2281 state = ngx_http_grpc_st_length_3; | |
| 2282 break; | |
| 2283 | |
| 2284 case ngx_http_grpc_st_length_3: | |
| 2285 ctx->rest |= ch; | |
| 2286 | |
| 2287 if (ctx->rest > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 2288 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2289 "upstream sent too large http2 frame: %uz", | |
| 2290 ctx->rest); | |
| 2291 return NGX_ERROR; | |
| 2292 } | |
| 2293 | |
| 2294 state = ngx_http_grpc_st_type; | |
| 2295 break; | |
| 2296 | |
| 2297 case ngx_http_grpc_st_type: | |
| 2298 ctx->type = ch; | |
| 2299 state = ngx_http_grpc_st_flags; | |
| 2300 break; | |
| 2301 | |
| 2302 case ngx_http_grpc_st_flags: | |
| 2303 ctx->flags = ch; | |
| 2304 state = ngx_http_grpc_st_stream_id; | |
| 2305 break; | |
| 2306 | |
| 2307 case ngx_http_grpc_st_stream_id: | |
| 2308 ctx->stream_id = (ch & 0x7f) << 24; | |
| 2309 state = ngx_http_grpc_st_stream_id_2; | |
| 2310 break; | |
| 2311 | |
| 2312 case ngx_http_grpc_st_stream_id_2: | |
| 2313 ctx->stream_id |= ch << 16; | |
| 2314 state = ngx_http_grpc_st_stream_id_3; | |
| 2315 break; | |
| 2316 | |
| 2317 case ngx_http_grpc_st_stream_id_3: | |
| 2318 ctx->stream_id |= ch << 8; | |
| 2319 state = ngx_http_grpc_st_stream_id_4; | |
| 2320 break; | |
| 2321 | |
| 2322 case ngx_http_grpc_st_stream_id_4: | |
| 2323 ctx->stream_id |= ch; | |
| 2324 | |
| 2325 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2326 "grpc frame: %d, len: %uz, f:%d, i:%ui", | |
| 2327 ctx->type, ctx->rest, ctx->flags, ctx->stream_id); | |
| 2328 | |
| 2329 b->pos = p + 1; | |
| 2330 | |
| 2331 ctx->state = ngx_http_grpc_st_payload; | |
| 2332 ctx->frame_state = 0; | |
| 2333 | |
| 2334 return NGX_OK; | |
| 2335 | |
| 2336 /* suppress warning */ | |
| 2337 case ngx_http_grpc_st_payload: | |
| 2338 case ngx_http_grpc_st_padding: | |
| 2339 break; | |
| 2340 } | |
| 2341 } | |
| 2342 | |
| 2343 b->pos = p; | |
| 2344 ctx->state = state; | |
| 2345 | |
| 2346 return NGX_AGAIN; | |
| 2347 } | |
| 2348 | |
| 2349 | |
| 2350 static ngx_int_t | |
| 2351 ngx_http_grpc_parse_header(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2352 ngx_buf_t *b) | |
| 2353 { | |
| 2354 u_char ch, *p, *last; | |
| 2355 size_t min; | |
| 2356 ngx_int_t rc; | |
| 2357 enum { | |
| 2358 sw_start = 0, | |
| 2359 sw_padding_length, | |
| 2360 sw_dependency, | |
| 2361 sw_dependency_2, | |
| 2362 sw_dependency_3, | |
| 2363 sw_dependency_4, | |
| 2364 sw_weight, | |
| 2365 sw_fragment, | |
| 2366 sw_padding | |
| 2367 } state; | |
| 2368 | |
| 2369 state = ctx->frame_state; | |
| 2370 | |
| 2371 if (state == sw_start) { | |
| 2372 | |
| 2373 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2374 "grpc parse header: start"); | |
| 2375 | |
| 2376 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME) { | |
| 2377 ctx->parsing_headers = 1; | |
| 2378 ctx->fragment_state = 0; | |
| 2379 | |
| 2380 min = (ctx->flags & NGX_HTTP_V2_PADDED_FLAG ? 1 : 0) | |
| 2381 + (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG ? 5 : 0); | |
| 2382 | |
| 2383 if (ctx->rest < min) { | |
| 2384 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2385 "upstream sent headers frame " | |
| 2386 "with invalid length: %uz", | |
| 2387 ctx->rest); | |
| 2388 return NGX_ERROR; | |
| 2389 } | |
| 2390 | |
| 2391 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
| 2392 ctx->end_stream = 1; | |
| 2393 } | |
| 2394 | |
| 2395 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
| 2396 state = sw_padding_length; | |
| 2397 | |
| 2398 } else if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
| 2399 state = sw_dependency; | |
| 2400 | |
| 2401 } else { | |
| 2402 state = sw_fragment; | |
| 2403 } | |
| 2404 | |
| 2405 } else if (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) { | |
| 2406 state = sw_fragment; | |
| 2407 } | |
| 2408 | |
| 2409 ctx->padding = 0; | |
| 2410 } | |
| 2411 | |
| 2412 if (state < sw_fragment) { | |
| 2413 | |
| 2414 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2415 last = b->last; | |
| 2416 | |
| 2417 } else { | |
| 2418 last = b->pos + ctx->rest; | |
| 2419 } | |
| 2420 | |
| 2421 for (p = b->pos; p < last; p++) { | |
| 2422 ch = *p; | |
| 2423 | |
| 2424 #if 0 | |
| 2425 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2426 "grpc header byte: %02Xd s:%d", ch, state); | |
| 2427 #endif | |
| 2428 | |
| 2429 /* | |
| 2430 * headers frame: | |
| 2431 * | |
| 2432 * +---------------+ | |
| 2433 * |Pad Length? (8)| | |
| 2434 * +-+-------------+----------------------------------------------+ | |
| 2435 * |E| Stream Dependency? (31) | | |
| 2436 * +-+-------------+----------------------------------------------+ | |
| 2437 * | Weight? (8) | | |
| 2438 * +-+-------------+----------------------------------------------+ | |
| 2439 * | Header Block Fragment (*) ... | |
| 2440 * +--------------------------------------------------------------+ | |
| 2441 * | Padding (*) ... | |
| 2442 * +--------------------------------------------------------------+ | |
| 2443 */ | |
| 2444 | |
| 2445 switch (state) { | |
| 2446 | |
| 2447 case sw_padding_length: | |
| 2448 | |
| 2449 ctx->padding = ch; | |
| 2450 | |
| 2451 if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
| 2452 state = sw_dependency; | |
| 2453 break; | |
| 2454 } | |
| 2455 | |
| 2456 goto fragment; | |
| 2457 | |
| 2458 case sw_dependency: | |
| 2459 state = sw_dependency_2; | |
| 2460 break; | |
| 2461 | |
| 2462 case sw_dependency_2: | |
| 2463 state = sw_dependency_3; | |
| 2464 break; | |
| 2465 | |
| 2466 case sw_dependency_3: | |
| 2467 state = sw_dependency_4; | |
| 2468 break; | |
| 2469 | |
| 2470 case sw_dependency_4: | |
| 2471 state = sw_weight; | |
| 2472 break; | |
| 2473 | |
| 2474 case sw_weight: | |
| 2475 goto fragment; | |
| 2476 | |
| 2477 /* suppress warning */ | |
| 2478 case sw_start: | |
| 2479 case sw_fragment: | |
| 2480 case sw_padding: | |
| 2481 break; | |
| 2482 } | |
| 2483 } | |
| 2484 | |
| 2485 ctx->rest -= p - b->pos; | |
| 2486 b->pos = p; | |
| 2487 | |
| 2488 ctx->frame_state = state; | |
| 2489 return NGX_AGAIN; | |
| 2490 | |
| 2491 fragment: | |
| 2492 | |
| 2493 p++; | |
| 2494 ctx->rest -= p - b->pos; | |
| 2495 b->pos = p; | |
| 2496 | |
| 2497 if (ctx->padding > ctx->rest) { | |
| 2498 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2499 "upstream sent http2 frame with too long " | |
| 2500 "padding: %d in frame %uz", | |
| 2501 ctx->padding, ctx->rest); | |
| 2502 return NGX_ERROR; | |
| 2503 } | |
| 2504 | |
| 2505 state = sw_fragment; | |
| 2506 ctx->frame_state = state; | |
| 2507 } | |
| 2508 | |
| 2509 if (state == sw_fragment) { | |
| 2510 | |
| 2511 rc = ngx_http_grpc_parse_fragment(r, ctx, b); | |
| 2512 | |
| 2513 if (rc == NGX_AGAIN) { | |
| 2514 return NGX_AGAIN; | |
| 2515 } | |
| 2516 | |
| 2517 if (rc == NGX_ERROR) { | |
| 2518 return NGX_ERROR; | |
| 2519 } | |
| 2520 | |
| 2521 if (rc == NGX_OK) { | |
| 2522 return NGX_OK; | |
| 2523 } | |
| 2524 | |
| 2525 /* rc == NGX_DONE */ | |
| 2526 | |
| 2527 state = sw_padding; | |
| 2528 ctx->frame_state = state; | |
| 2529 } | |
| 2530 | |
| 2531 if (state == sw_padding) { | |
| 2532 | |
| 2533 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2534 | |
| 2535 ctx->rest -= b->last - b->pos; | |
| 2536 b->pos = b->last; | |
| 2537 | |
| 2538 return NGX_AGAIN; | |
| 2539 } | |
| 2540 | |
| 2541 b->pos += ctx->rest; | |
| 2542 ctx->rest = 0; | |
| 2543 | |
| 2544 ctx->state = ngx_http_grpc_st_start; | |
| 2545 | |
| 2546 if (ctx->flags & NGX_HTTP_V2_END_HEADERS_FLAG) { | |
| 2547 | |
| 2548 if (ctx->fragment_state) { | |
| 2549 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2550 "upstream sent truncated http2 header"); | |
| 2551 return NGX_ERROR; | |
| 2552 } | |
| 2553 | |
| 2554 ctx->parsing_headers = 0; | |
| 2555 | |
| 2556 return NGX_HTTP_PARSE_HEADER_DONE; | |
| 2557 } | |
| 2558 | |
| 2559 return NGX_AGAIN; | |
| 2560 } | |
| 2561 | |
| 2562 /* unreachable */ | |
| 2563 | |
| 2564 return NGX_ERROR; | |
| 2565 } | |
| 2566 | |
| 2567 | |
| 2568 static ngx_int_t | |
| 2569 ngx_http_grpc_parse_fragment(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2570 ngx_buf_t *b) | |
| 2571 { | |
| 2572 u_char ch, *p, *last; | |
| 2573 size_t size; | |
| 2574 ngx_uint_t index, size_update; | |
| 2575 enum { | |
| 2576 sw_start = 0, | |
| 2577 sw_index, | |
| 2578 sw_name_length, | |
| 2579 sw_name_length_2, | |
| 2580 sw_name_length_3, | |
| 2581 sw_name_length_4, | |
| 2582 sw_name, | |
| 2583 sw_name_bytes, | |
| 2584 sw_value_length, | |
| 2585 sw_value_length_2, | |
| 2586 sw_value_length_3, | |
| 2587 sw_value_length_4, | |
| 2588 sw_value, | |
| 2589 sw_value_bytes | |
| 2590 } state; | |
| 2591 | |
| 2592 /* header block fragment */ | |
| 2593 | |
| 2594 #if 0 | |
| 2595 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2596 "grpc header fragment %p:%p rest:%uz", | |
| 2597 b->pos, b->last, ctx->rest); | |
| 2598 #endif | |
| 2599 | |
| 2600 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
| 2601 last = b->last; | |
| 2602 | |
| 2603 } else { | |
| 2604 last = b->pos + ctx->rest - ctx->padding; | |
| 2605 } | |
| 2606 | |
| 2607 state = ctx->fragment_state; | |
| 2608 | |
| 2609 for (p = b->pos; p < last; p++) { | |
| 2610 ch = *p; | |
| 2611 | |
| 2612 #if 0 | |
| 2613 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2614 "grpc header byte: %02Xd s:%d", ch, state); | |
| 2615 #endif | |
| 2616 | |
| 2617 switch (state) { | |
| 2618 | |
| 2619 case sw_start: | |
| 2620 ctx->index = 0; | |
| 2621 | |
| 2622 if ((ch & 0x80) == 0x80) { | |
| 2623 /* | |
| 2624 * indexed header: | |
| 2625 * | |
| 2626 * 0 1 2 3 4 5 6 7 | |
| 2627 * +---+---+---+---+---+---+---+---+ | |
| 2628 * | 1 | Index (7+) | | |
| 2629 * +---+---------------------------+ | |
| 2630 */ | |
| 2631 | |
| 2632 index = ch & ~0x80; | |
| 2633 | |
| 2634 if (index == 0 || index > 61) { | |
| 2635 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2636 "upstream sent invalid http2 " | |
| 2637 "table index: %ui", index); | |
| 2638 return NGX_ERROR; | |
| 2639 } | |
| 2640 | |
| 2641 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2642 "grpc indexed header: %ui", index); | |
| 2643 | |
| 2644 ctx->index = index; | |
| 2645 ctx->literal = 0; | |
| 2646 | |
| 2647 goto done; | |
| 2648 | |
| 2649 } else if ((ch & 0xc0) == 0x40) { | |
| 2650 /* | |
| 2651 * literal header with incremental indexing: | |
| 2652 * | |
| 2653 * 0 1 2 3 4 5 6 7 | |
| 2654 * +---+---+---+---+---+---+---+---+ | |
| 2655 * | 0 | 1 | Index (6+) | | |
| 2656 * +---+---+-----------------------+ | |
| 2657 * | H | Value Length (7+) | | |
| 2658 * +---+---------------------------+ | |
| 2659 * | Value String (Length octets) | | |
| 2660 * +-------------------------------+ | |
| 2661 * | |
| 2662 * 0 1 2 3 4 5 6 7 | |
| 2663 * +---+---+---+---+---+---+---+---+ | |
| 2664 * | 0 | 1 | 0 | | |
| 2665 * +---+---+-----------------------+ | |
| 2666 * | H | Name Length (7+) | | |
| 2667 * +---+---------------------------+ | |
| 2668 * | Name String (Length octets) | | |
| 2669 * +---+---------------------------+ | |
| 2670 * | H | Value Length (7+) | | |
| 2671 * +---+---------------------------+ | |
| 2672 * | Value String (Length octets) | | |
| 2673 * +-------------------------------+ | |
| 2674 */ | |
| 2675 | |
| 2676 index = ch & ~0xc0; | |
| 2677 | |
| 2678 if (index > 61) { | |
| 2679 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2680 "upstream sent invalid http2 " | |
| 2681 "table index: %ui", index); | |
| 2682 return NGX_ERROR; | |
| 2683 } | |
| 2684 | |
| 2685 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2686 "grpc literal header: %ui", index); | |
| 2687 | |
| 2688 if (index == 0) { | |
| 2689 state = sw_name_length; | |
| 2690 break; | |
| 2691 } | |
| 2692 | |
| 2693 ctx->index = index; | |
| 2694 ctx->literal = 1; | |
| 2695 | |
| 2696 state = sw_value_length; | |
| 2697 break; | |
| 2698 | |
| 2699 } else if ((ch & 0xe0) == 0x20) { | |
| 2700 /* | |
| 2701 * dynamic table size update: | |
| 2702 * | |
| 2703 * 0 1 2 3 4 5 6 7 | |
| 2704 * +---+---+---+---+---+---+---+---+ | |
| 2705 * | 0 | 0 | 1 | Max size (5+) | | |
| 2706 * +---+---------------------------+ | |
| 2707 */ | |
| 2708 | |
| 2709 size_update = ch & ~0xe0; | |
| 2710 | |
| 2711 if (size_update > 0) { | |
| 2712 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2713 "upstream sent invalid http2 " | |
| 2714 "dynamic table size update: %ui", | |
| 2715 size_update); | |
| 2716 return NGX_ERROR; | |
| 2717 } | |
| 2718 | |
| 2719 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2720 "grpc table size update: %ui", size_update); | |
| 2721 | |
| 2722 break; | |
| 2723 | |
| 2724 } else if ((ch & 0xf0) == 0x10) { | |
| 2725 /* | |
| 2726 * literal header field never indexed: | |
| 2727 * | |
| 2728 * 0 1 2 3 4 5 6 7 | |
| 2729 * +---+---+---+---+---+---+---+---+ | |
| 2730 * | 0 | 0 | 0 | 1 | Index (4+) | | |
| 2731 * +---+---+-----------------------+ | |
| 2732 * | H | Value Length (7+) | | |
| 2733 * +---+---------------------------+ | |
| 2734 * | Value String (Length octets) | | |
| 2735 * +-------------------------------+ | |
| 2736 * | |
| 2737 * 0 1 2 3 4 5 6 7 | |
| 2738 * +---+---+---+---+---+---+---+---+ | |
| 2739 * | 0 | 0 | 0 | 1 | 0 | | |
| 2740 * +---+---+-----------------------+ | |
| 2741 * | H | Name Length (7+) | | |
| 2742 * +---+---------------------------+ | |
| 2743 * | Name String (Length octets) | | |
| 2744 * +---+---------------------------+ | |
| 2745 * | H | Value Length (7+) | | |
| 2746 * +---+---------------------------+ | |
| 2747 * | Value String (Length octets) | | |
| 2748 * +-------------------------------+ | |
| 2749 */ | |
| 2750 | |
| 2751 index = ch & ~0xf0; | |
| 2752 | |
| 2753 if (index == 0x0f) { | |
| 2754 ctx->index = index; | |
| 2755 ctx->literal = 1; | |
| 2756 state = sw_index; | |
| 2757 break; | |
| 2758 } | |
| 2759 | |
| 2760 if (index == 0) { | |
| 2761 state = sw_name_length; | |
| 2762 break; | |
| 2763 } | |
| 2764 | |
| 2765 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2766 "grpc literal header never indexed: %ui", | |
| 2767 index); | |
| 2768 | |
| 2769 ctx->index = index; | |
| 2770 ctx->literal = 1; | |
| 2771 | |
| 2772 state = sw_value_length; | |
| 2773 break; | |
| 2774 | |
| 2775 } else if ((ch & 0xf0) == 0x00) { | |
| 2776 /* | |
| 2777 * literal header field without indexing: | |
| 2778 * | |
| 2779 * 0 1 2 3 4 5 6 7 | |
| 2780 * +---+---+---+---+---+---+---+---+ | |
| 2781 * | 0 | 0 | 0 | 0 | Index (4+) | | |
| 2782 * +---+---+-----------------------+ | |
| 2783 * | H | Value Length (7+) | | |
| 2784 * +---+---------------------------+ | |
| 2785 * | Value String (Length octets) | | |
| 2786 * +-------------------------------+ | |
| 2787 * | |
| 2788 * 0 1 2 3 4 5 6 7 | |
| 2789 * +---+---+---+---+---+---+---+---+ | |
| 2790 * | 0 | 0 | 0 | 0 | 0 | | |
| 2791 * +---+---+-----------------------+ | |
| 2792 * | H | Name Length (7+) | | |
| 2793 * +---+---------------------------+ | |
| 2794 * | Name String (Length octets) | | |
| 2795 * +---+---------------------------+ | |
| 2796 * | H | Value Length (7+) | | |
| 2797 * +---+---------------------------+ | |
| 2798 * | Value String (Length octets) | | |
| 2799 * +-------------------------------+ | |
| 2800 */ | |
| 2801 | |
| 2802 index = ch & ~0xf0; | |
| 2803 | |
| 2804 if (index == 0x0f) { | |
| 2805 ctx->index = index; | |
| 2806 ctx->literal = 1; | |
| 2807 state = sw_index; | |
| 2808 break; | |
| 2809 } | |
| 2810 | |
| 2811 if (index == 0) { | |
| 2812 state = sw_name_length; | |
| 2813 break; | |
| 2814 } | |
| 2815 | |
| 2816 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2817 "grpc literal header without indexing: %ui", | |
| 2818 index); | |
| 2819 | |
| 2820 ctx->index = index; | |
| 2821 ctx->literal = 1; | |
| 2822 | |
| 2823 state = sw_value_length; | |
| 2824 break; | |
| 2825 } | |
| 2826 | |
| 2827 /* not reached */ | |
| 2828 | |
| 2829 return NGX_ERROR; | |
| 2830 | |
| 2831 case sw_index: | |
| 2832 ctx->index = ctx->index + (ch & ~0x80); | |
| 2833 | |
| 2834 if (ch & 0x80) { | |
| 2835 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2836 "upstream sent http2 table index " | |
| 2837 "with continuation flag"); | |
| 2838 return NGX_ERROR; | |
| 2839 } | |
| 2840 | |
| 2841 if (ctx->index > 61) { | |
| 2842 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2843 "upstream sent invalid http2 " | |
| 2844 "table index: %ui", ctx->index); | |
| 2845 return NGX_ERROR; | |
| 2846 } | |
| 2847 | |
| 2848 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2849 "grpc header index: %ui", ctx->index); | |
| 2850 | |
| 2851 state = sw_value_length; | |
| 2852 break; | |
| 2853 | |
| 2854 case sw_name_length: | |
| 2855 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
| 2856 ctx->field_length = ch & ~0x80; | |
| 2857 | |
| 2858 if (ctx->field_length == 0x7f) { | |
| 2859 state = sw_name_length_2; | |
| 2860 break; | |
| 2861 } | |
| 2862 | |
| 2863 if (ctx->field_length == 0) { | |
| 2864 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2865 "upstream sent zero http2 " | |
| 2866 "header name length"); | |
| 2867 return NGX_ERROR; | |
| 2868 } | |
| 2869 | |
| 2870 state = sw_name; | |
| 2871 break; | |
| 2872 | |
| 2873 case sw_name_length_2: | |
| 2874 ctx->field_length += ch & ~0x80; | |
| 2875 | |
| 2876 if (ch & 0x80) { | |
| 2877 state = sw_name_length_3; | |
| 2878 break; | |
| 2879 } | |
| 2880 | |
| 2881 state = sw_name; | |
| 2882 break; | |
| 2883 | |
| 2884 case sw_name_length_3: | |
| 2885 ctx->field_length += (ch & ~0x80) << 7; | |
| 2886 | |
| 2887 if (ch & 0x80) { | |
| 2888 state = sw_name_length_4; | |
| 2889 break; | |
| 2890 } | |
| 2891 | |
| 2892 state = sw_name; | |
| 2893 break; | |
| 2894 | |
| 2895 case sw_name_length_4: | |
| 2896 ctx->field_length += (ch & ~0x80) << 14; | |
| 2897 | |
| 2898 if (ch & 0x80) { | |
| 2899 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2900 "upstream sent too large http2 " | |
| 2901 "header name length"); | |
| 2902 return NGX_ERROR; | |
| 2903 } | |
| 2904 | |
| 2905 state = sw_name; | |
| 2906 break; | |
| 2907 | |
| 2908 case sw_name: | |
| 2909 ctx->name.len = ctx->field_huffman ? | |
| 2910 ctx->field_length * 8 / 5 : ctx->field_length; | |
| 2911 | |
| 2912 ctx->name.data = ngx_pnalloc(r->pool, ctx->name.len + 1); | |
| 2913 if (ctx->name.data == NULL) { | |
| 2914 return NGX_ERROR; | |
| 2915 } | |
| 2916 | |
| 2917 ctx->field_end = ctx->name.data; | |
| 2918 ctx->field_rest = ctx->field_length; | |
| 2919 ctx->field_state = 0; | |
| 2920 | |
| 2921 state = sw_name_bytes; | |
| 2922 | |
| 2923 /* fall through */ | |
| 2924 | |
| 2925 case sw_name_bytes: | |
| 2926 | |
| 2927 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2928 "grpc name: len:%uz h:%d last:%uz, rest:%uz", | |
| 2929 ctx->field_length, | |
| 2930 ctx->field_huffman, | |
| 2931 last - p, | |
| 2932 ctx->rest - (p - b->pos)); | |
| 2933 | |
| 2934 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
| 2935 ctx->field_rest -= size; | |
| 2936 | |
| 2937 if (ctx->field_huffman) { | |
| 2938 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
| 2939 &ctx->field_end, | |
| 2940 ctx->field_rest == 0, | |
| 2941 r->connection->log) | |
| 2942 != NGX_OK) | |
| 2943 { | |
| 2944 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2945 "upstream sent invalid encoded header"); | |
| 2946 return NGX_ERROR; | |
| 2947 } | |
| 2948 | |
| 2949 ctx->name.len = ctx->field_end - ctx->name.data; | |
| 2950 ctx->name.data[ctx->name.len] = '\0'; | |
| 2951 | |
| 2952 } else { | |
| 2953 ngx_memcpy(ctx->field_end, p, size); | |
| 2954 ctx->name.data[ctx->name.len] = '\0'; | |
| 2955 } | |
| 2956 | |
| 2957 p += size - 1; | |
| 2958 | |
| 2959 if (ctx->field_rest == 0) { | |
| 2960 state = sw_value_length; | |
| 2961 } | |
| 2962 | |
| 2963 break; | |
| 2964 | |
| 2965 case sw_value_length: | |
| 2966 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
| 2967 ctx->field_length = ch & ~0x80; | |
| 2968 | |
| 2969 if (ctx->field_length == 0x7f) { | |
| 2970 state = sw_value_length_2; | |
| 2971 break; | |
| 2972 } | |
| 2973 | |
| 2974 if (ctx->field_length == 0) { | |
| 2975 ngx_str_set(&ctx->value, ""); | |
| 2976 goto done; | |
| 2977 } | |
| 2978 | |
| 2979 state = sw_value; | |
| 2980 break; | |
| 2981 | |
| 2982 case sw_value_length_2: | |
| 2983 ctx->field_length += ch & ~0x80; | |
| 2984 | |
| 2985 if (ch & 0x80) { | |
| 2986 state = sw_value_length_3; | |
| 2987 break; | |
| 2988 } | |
| 2989 | |
| 2990 state = sw_value; | |
| 2991 break; | |
| 2992 | |
| 2993 case sw_value_length_3: | |
| 2994 ctx->field_length += (ch & ~0x80) << 7; | |
| 2995 | |
| 2996 if (ch & 0x80) { | |
| 2997 state = sw_value_length_4; | |
| 2998 break; | |
| 2999 } | |
| 3000 | |
| 3001 state = sw_value; | |
| 3002 break; | |
| 3003 | |
| 3004 case sw_value_length_4: | |
| 3005 ctx->field_length += (ch & ~0x80) << 14; | |
| 3006 | |
| 3007 if (ch & 0x80) { | |
| 3008 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3009 "upstream sent too large http2 " | |
| 3010 "header value length"); | |
| 3011 return NGX_ERROR; | |
| 3012 } | |
| 3013 | |
| 3014 state = sw_value; | |
| 3015 break; | |
| 3016 | |
| 3017 case sw_value: | |
| 3018 ctx->value.len = ctx->field_huffman ? | |
| 3019 ctx->field_length * 8 / 5 : ctx->field_length; | |
| 3020 | |
| 3021 ctx->value.data = ngx_pnalloc(r->pool, ctx->value.len + 1); | |
| 3022 if (ctx->value.data == NULL) { | |
| 3023 return NGX_ERROR; | |
| 3024 } | |
| 3025 | |
| 3026 ctx->field_end = ctx->value.data; | |
| 3027 ctx->field_rest = ctx->field_length; | |
| 3028 ctx->field_state = 0; | |
| 3029 | |
| 3030 state = sw_value_bytes; | |
| 3031 | |
| 3032 /* fall through */ | |
| 3033 | |
| 3034 case sw_value_bytes: | |
| 3035 | |
| 3036 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3037 "grpc value: len:%uz h:%d last:%uz, rest:%uz", | |
| 3038 ctx->field_length, | |
| 3039 ctx->field_huffman, | |
| 3040 last - p, | |
| 3041 ctx->rest - (p - b->pos)); | |
| 3042 | |
| 3043 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
| 3044 ctx->field_rest -= size; | |
| 3045 | |
| 3046 if (ctx->field_huffman) { | |
| 3047 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
| 3048 &ctx->field_end, | |
| 3049 ctx->field_rest == 0, | |
| 3050 r->connection->log) | |
| 3051 != NGX_OK) | |
| 3052 { | |
| 3053 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3054 "upstream sent invalid encoded header"); | |
| 3055 return NGX_ERROR; | |
| 3056 } | |
| 3057 | |
| 3058 ctx->value.len = ctx->field_end - ctx->value.data; | |
| 3059 ctx->value.data[ctx->value.len] = '\0'; | |
| 3060 | |
| 3061 } else { | |
| 3062 ngx_memcpy(ctx->field_end, p, size); | |
| 3063 ctx->value.data[ctx->value.len] = '\0'; | |
| 3064 } | |
| 3065 | |
| 3066 p += size - 1; | |
| 3067 | |
| 3068 if (ctx->field_rest == 0) { | |
| 3069 goto done; | |
| 3070 } | |
| 3071 | |
| 3072 break; | |
| 3073 } | |
| 3074 | |
| 3075 continue; | |
| 3076 | |
| 3077 done: | |
| 3078 | |
| 3079 p++; | |
| 3080 ctx->rest -= p - b->pos; | |
| 3081 ctx->fragment_state = sw_start; | |
| 3082 b->pos = p; | |
| 3083 | |
| 3084 if (ctx->index) { | |
| 3085 ctx->name = *ngx_http_v2_get_static_name(ctx->index); | |
| 3086 } | |
| 3087 | |
| 3088 if (ctx->index && !ctx->literal) { | |
| 3089 ctx->value = *ngx_http_v2_get_static_value(ctx->index); | |
| 3090 } | |
| 3091 | |
| 3092 if (!ctx->index) { | |
| 3093 if (ngx_http_grpc_validate_header_name(r, &ctx->name) != NGX_OK) { | |
| 3094 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3095 "upstream sent invalid header: \"%V: %V\"", | |
| 3096 &ctx->name, &ctx->value); | |
| 3097 return NGX_ERROR; | |
| 3098 } | |
| 3099 } | |
| 3100 | |
| 3101 if (!ctx->index || ctx->literal) { | |
| 3102 if (ngx_http_grpc_validate_header_value(r, &ctx->value) != NGX_OK) { | |
| 3103 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3104 "upstream sent invalid header: \"%V: %V\"", | |
| 3105 &ctx->name, &ctx->value); | |
| 3106 return NGX_ERROR; | |
| 3107 } | |
| 3108 } | |
| 3109 | |
| 3110 return NGX_OK; | |
| 3111 } | |
| 3112 | |
| 3113 ctx->rest -= p - b->pos; | |
| 3114 ctx->fragment_state = state; | |
| 3115 b->pos = p; | |
| 3116 | |
| 3117 if (ctx->rest > ctx->padding) { | |
| 3118 return NGX_AGAIN; | |
| 3119 } | |
| 3120 | |
| 3121 return NGX_DONE; | |
| 3122 } | |
| 3123 | |
| 3124 | |
| 3125 static ngx_int_t | |
| 3126 ngx_http_grpc_validate_header_name(ngx_http_request_t *r, ngx_str_t *s) | |
| 3127 { | |
| 3128 u_char ch; | |
| 3129 ngx_uint_t i; | |
| 3130 | |
| 3131 for (i = 0; i < s->len; i++) { | |
| 3132 ch = s->data[i]; | |
| 3133 | |
| 3134 if (ch == ':' && i > 0) { | |
| 3135 return NGX_ERROR; | |
| 3136 } | |
| 3137 | |
| 3138 if (ch >= 'A' && ch <= 'Z') { | |
| 3139 return NGX_ERROR; | |
| 3140 } | |
| 3141 | |
| 3142 if (ch == '\0' || ch == CR || ch == LF) { | |
| 3143 return NGX_ERROR; | |
| 3144 } | |
| 3145 } | |
| 3146 | |
| 3147 return NGX_OK; | |
| 3148 } | |
| 3149 | |
| 3150 | |
| 3151 static ngx_int_t | |
| 3152 ngx_http_grpc_validate_header_value(ngx_http_request_t *r, ngx_str_t *s) | |
| 3153 { | |
| 3154 u_char ch; | |
| 3155 ngx_uint_t i; | |
| 3156 | |
| 3157 for (i = 0; i < s->len; i++) { | |
| 3158 ch = s->data[i]; | |
| 3159 | |
| 3160 if (ch == '\0' || ch == CR || ch == LF) { | |
| 3161 return NGX_ERROR; | |
| 3162 } | |
| 3163 } | |
| 3164 | |
| 3165 return NGX_OK; | |
| 3166 } | |
| 3167 | |
| 3168 | |
| 3169 static ngx_int_t | |
| 3170 ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3171 ngx_buf_t *b) | |
| 3172 { | |
| 3173 u_char ch, *p, *last; | |
| 3174 enum { | |
| 3175 sw_start = 0, | |
| 3176 sw_error_2, | |
| 3177 sw_error_3, | |
| 3178 sw_error_4 | |
| 3179 } state; | |
| 3180 | |
| 3181 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3182 last = b->last; | |
| 3183 | |
| 3184 } else { | |
| 3185 last = b->pos + ctx->rest; | |
| 3186 } | |
| 3187 | |
| 3188 state = ctx->frame_state; | |
| 3189 | |
| 3190 if (state == sw_start) { | |
| 3191 if (ctx->rest != 4) { | |
| 3192 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3193 "upstream sent rst stream frame " | |
| 3194 "with invalid length: %uz", | |
| 3195 ctx->rest); | |
| 3196 return NGX_ERROR; | |
| 3197 } | |
| 3198 } | |
| 3199 | |
| 3200 for (p = b->pos; p < last; p++) { | |
| 3201 ch = *p; | |
| 3202 | |
| 3203 #if 0 | |
| 3204 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3205 "grpc rst byte: %02Xd s:%d", ch, state); | |
| 3206 #endif | |
| 3207 | |
| 3208 switch (state) { | |
| 3209 | |
| 3210 case sw_start: | |
| 3211 ctx->error = ch << 24; | |
| 3212 state = sw_error_2; | |
| 3213 break; | |
| 3214 | |
| 3215 case sw_error_2: | |
| 3216 ctx->error |= ch << 16; | |
| 3217 state = sw_error_3; | |
| 3218 break; | |
| 3219 | |
| 3220 case sw_error_3: | |
| 3221 ctx->error |= ch << 8; | |
| 3222 state = sw_error_4; | |
| 3223 break; | |
| 3224 | |
| 3225 case sw_error_4: | |
| 3226 ctx->error |= ch; | |
| 3227 state = sw_start; | |
| 3228 | |
| 3229 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3230 "grpc error: %ui", ctx->error); | |
| 3231 | |
| 3232 break; | |
| 3233 } | |
| 3234 } | |
| 3235 | |
| 3236 ctx->rest -= p - b->pos; | |
| 3237 ctx->frame_state = state; | |
| 3238 b->pos = p; | |
| 3239 | |
| 3240 if (ctx->rest > 0) { | |
| 3241 return NGX_AGAIN; | |
| 3242 } | |
| 3243 | |
| 3244 return NGX_OK; | |
| 3245 } | |
| 3246 | |
| 3247 | |
| 3248 static ngx_int_t | |
| 3249 ngx_http_grpc_parse_goaway(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3250 ngx_buf_t *b) | |
| 3251 { | |
| 3252 u_char ch, *p, *last; | |
| 3253 enum { | |
| 3254 sw_start = 0, | |
| 3255 sw_last_stream_id_2, | |
| 3256 sw_last_stream_id_3, | |
| 3257 sw_last_stream_id_4, | |
| 3258 sw_error, | |
| 3259 sw_error_2, | |
| 3260 sw_error_3, | |
| 3261 sw_error_4, | |
| 3262 sw_debug | |
| 3263 } state; | |
| 3264 | |
| 3265 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3266 last = b->last; | |
| 3267 | |
| 3268 } else { | |
| 3269 last = b->pos + ctx->rest; | |
| 3270 } | |
| 3271 | |
| 3272 state = ctx->frame_state; | |
| 3273 | |
| 3274 if (state == sw_start) { | |
| 3275 | |
| 3276 if (ctx->stream_id) { | |
| 3277 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3278 "upstream sent goaway frame " | |
| 3279 "with non-zero stream id: %ui", | |
| 3280 ctx->stream_id); | |
| 3281 return NGX_ERROR; | |
| 3282 } | |
| 3283 | |
| 3284 if (ctx->rest < 8) { | |
| 3285 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3286 "upstream sent goaway frame " | |
| 3287 "with invalid length: %uz", | |
| 3288 ctx->rest); | |
| 3289 return NGX_ERROR; | |
| 3290 } | |
| 3291 } | |
| 3292 | |
| 3293 for (p = b->pos; p < last; p++) { | |
| 3294 ch = *p; | |
| 3295 | |
| 3296 #if 0 | |
| 3297 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3298 "grpc goaway byte: %02Xd s:%d", ch, state); | |
| 3299 #endif | |
| 3300 | |
| 3301 switch (state) { | |
| 3302 | |
| 3303 case sw_start: | |
| 3304 ctx->stream_id = (ch & 0x7f) << 24; | |
| 3305 state = sw_last_stream_id_2; | |
| 3306 break; | |
| 3307 | |
| 3308 case sw_last_stream_id_2: | |
| 3309 ctx->stream_id |= ch << 16; | |
| 3310 state = sw_last_stream_id_3; | |
| 3311 break; | |
| 3312 | |
| 3313 case sw_last_stream_id_3: | |
| 3314 ctx->stream_id |= ch << 8; | |
| 3315 state = sw_last_stream_id_4; | |
| 3316 break; | |
| 3317 | |
| 3318 case sw_last_stream_id_4: | |
| 3319 ctx->stream_id |= ch; | |
| 3320 state = sw_error; | |
| 3321 break; | |
| 3322 | |
| 3323 case sw_error: | |
| 3324 ctx->error = ch << 24; | |
| 3325 state = sw_error_2; | |
| 3326 break; | |
| 3327 | |
| 3328 case sw_error_2: | |
| 3329 ctx->error |= ch << 16; | |
| 3330 state = sw_error_3; | |
| 3331 break; | |
| 3332 | |
| 3333 case sw_error_3: | |
| 3334 ctx->error |= ch << 8; | |
| 3335 state = sw_error_4; | |
| 3336 break; | |
| 3337 | |
| 3338 case sw_error_4: | |
| 3339 ctx->error |= ch; | |
| 3340 state = sw_debug; | |
| 3341 break; | |
| 3342 | |
| 3343 case sw_debug: | |
| 3344 break; | |
| 3345 } | |
| 3346 } | |
| 3347 | |
| 3348 ctx->rest -= p - b->pos; | |
| 3349 ctx->frame_state = state; | |
| 3350 b->pos = p; | |
| 3351 | |
| 3352 if (ctx->rest > 0) { | |
| 3353 return NGX_AGAIN; | |
| 3354 } | |
| 3355 | |
| 3356 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3357 "grpc goaway: %ui, stream %ui", | |
| 3358 ctx->error, ctx->stream_id); | |
| 3359 | |
| 3360 ctx->state = ngx_http_grpc_st_start; | |
| 3361 | |
| 3362 return NGX_OK; | |
| 3363 } | |
| 3364 | |
| 3365 | |
| 3366 static ngx_int_t | |
| 3367 ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
| 3368 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
| 3369 { | |
| 3370 u_char ch, *p, *last; | |
| 3371 enum { | |
| 3372 sw_start = 0, | |
| 3373 sw_size_2, | |
| 3374 sw_size_3, | |
| 3375 sw_size_4 | |
| 3376 } state; | |
| 3377 | |
| 3378 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3379 last = b->last; | |
| 3380 | |
| 3381 } else { | |
| 3382 last = b->pos + ctx->rest; | |
| 3383 } | |
| 3384 | |
| 3385 state = ctx->frame_state; | |
| 3386 | |
| 3387 if (state == sw_start) { | |
| 3388 if (ctx->rest != 4) { | |
| 3389 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3390 "upstream sent window update frame " | |
| 3391 "with invalid length: %uz", | |
| 3392 ctx->rest); | |
| 3393 return NGX_ERROR; | |
| 3394 } | |
| 3395 } | |
| 3396 | |
| 3397 for (p = b->pos; p < last; p++) { | |
| 3398 ch = *p; | |
| 3399 | |
| 3400 #if 0 | |
| 3401 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3402 "grpc window update byte: %02Xd s:%d", ch, state); | |
| 3403 #endif | |
| 3404 | |
| 3405 switch (state) { | |
| 3406 | |
| 3407 case sw_start: | |
| 3408 ctx->window_update = (ch & 0x7f) << 24; | |
| 3409 state = sw_size_2; | |
| 3410 break; | |
| 3411 | |
| 3412 case sw_size_2: | |
| 3413 ctx->window_update |= ch << 16; | |
| 3414 state = sw_size_3; | |
| 3415 break; | |
| 3416 | |
| 3417 case sw_size_3: | |
| 3418 ctx->window_update |= ch << 8; | |
| 3419 state = sw_size_4; | |
| 3420 break; | |
| 3421 | |
| 3422 case sw_size_4: | |
| 3423 ctx->window_update |= ch; | |
| 3424 state = sw_start; | |
| 3425 break; | |
| 3426 } | |
| 3427 } | |
| 3428 | |
| 3429 ctx->rest -= p - b->pos; | |
| 3430 ctx->frame_state = state; | |
| 3431 b->pos = p; | |
| 3432 | |
| 3433 if (ctx->rest > 0) { | |
| 3434 return NGX_AGAIN; | |
| 3435 } | |
| 3436 | |
| 3437 ctx->state = ngx_http_grpc_st_start; | |
| 3438 | |
| 3439 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3440 "grpc window update: %ui", ctx->window_update); | |
| 3441 | |
| 3442 if (ctx->stream_id) { | |
| 3443 | |
| 3444 if (ctx->window_update > (size_t) NGX_HTTP_V2_MAX_WINDOW | |
| 3445 - ctx->send_window) | |
| 3446 { | |
| 3447 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3448 "upstream sent too large window update"); | |
| 3449 return NGX_ERROR; | |
| 3450 } | |
| 3451 | |
| 3452 ctx->send_window += ctx->window_update; | |
| 3453 | |
| 3454 } else { | |
| 3455 | |
| 3456 if (ctx->window_update > NGX_HTTP_V2_MAX_WINDOW | |
| 3457 - ctx->connection->send_window) | |
| 3458 { | |
| 3459 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3460 "upstream sent too large window update"); | |
| 3461 return NGX_ERROR; | |
| 3462 } | |
| 3463 | |
| 3464 ctx->connection->send_window += ctx->window_update; | |
| 3465 } | |
| 3466 | |
| 3467 return NGX_OK; | |
| 3468 } | |
| 3469 | |
| 3470 | |
| 3471 static ngx_int_t | |
| 3472 ngx_http_grpc_parse_settings(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3473 ngx_buf_t *b) | |
| 3474 { | |
| 3475 u_char ch, *p, *last; | |
| 3476 ssize_t window_update; | |
| 3477 enum { | |
| 3478 sw_start = 0, | |
| 3479 sw_id, | |
| 3480 sw_id_2, | |
| 3481 sw_value, | |
| 3482 sw_value_2, | |
| 3483 sw_value_3, | |
| 3484 sw_value_4 | |
| 3485 } state; | |
| 3486 | |
| 3487 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3488 last = b->last; | |
| 3489 | |
| 3490 } else { | |
| 3491 last = b->pos + ctx->rest; | |
| 3492 } | |
| 3493 | |
| 3494 state = ctx->frame_state; | |
| 3495 | |
| 3496 if (state == sw_start) { | |
| 3497 | |
| 3498 if (ctx->stream_id) { | |
| 3499 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3500 "upstream sent settings frame " | |
| 3501 "with non-zero stream id: %ui", | |
| 3502 ctx->stream_id); | |
| 3503 return NGX_ERROR; | |
| 3504 } | |
| 3505 | |
| 3506 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
| 3507 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3508 "grpc settings ack"); | |
| 3509 | |
| 3510 if (ctx->rest != 0) { | |
| 3511 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3512 "upstream sent settings frame " | |
| 3513 "with ack flag and non-zero length: %uz", | |
| 3514 ctx->rest); | |
| 3515 return NGX_ERROR; | |
| 3516 } | |
| 3517 | |
| 3518 ctx->state = ngx_http_grpc_st_start; | |
| 3519 | |
| 3520 return NGX_OK; | |
| 3521 } | |
| 3522 | |
| 3523 if (ctx->rest % 6 != 0) { | |
| 3524 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3525 "upstream sent settings frame " | |
| 3526 "with invalid length: %uz", | |
| 3527 ctx->rest); | |
| 3528 return NGX_ERROR; | |
| 3529 } | |
| 3530 } | |
| 3531 | |
| 3532 for (p = b->pos; p < last; p++) { | |
| 3533 ch = *p; | |
| 3534 | |
| 3535 #if 0 | |
| 3536 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3537 "grpc settings byte: %02Xd s:%d", ch, state); | |
| 3538 #endif | |
| 3539 | |
| 3540 switch (state) { | |
| 3541 | |
| 3542 case sw_start: | |
| 3543 case sw_id: | |
| 3544 ctx->setting_id = ch << 8; | |
| 3545 state = sw_id_2; | |
| 3546 break; | |
| 3547 | |
| 3548 case sw_id_2: | |
| 3549 ctx->setting_id |= ch; | |
| 3550 state = sw_value; | |
| 3551 break; | |
| 3552 | |
| 3553 case sw_value: | |
| 3554 ctx->setting_value = ch << 24; | |
| 3555 state = sw_value_2; | |
| 3556 break; | |
| 3557 | |
| 3558 case sw_value_2: | |
| 3559 ctx->setting_value |= ch << 16; | |
| 3560 state = sw_value_3; | |
| 3561 break; | |
| 3562 | |
| 3563 case sw_value_3: | |
| 3564 ctx->setting_value |= ch << 8; | |
| 3565 state = sw_value_4; | |
| 3566 break; | |
| 3567 | |
| 3568 case sw_value_4: | |
| 3569 ctx->setting_value |= ch; | |
| 3570 state = sw_id; | |
| 3571 | |
| 3572 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3573 "grpc setting: %ui %ui", | |
| 3574 ctx->setting_id, ctx->setting_value); | |
| 3575 | |
| 3576 /* | |
| 3577 * The following settings are defined by the protocol: | |
| 3578 * | |
| 3579 * SETTINGS_HEADER_TABLE_SIZE, SETTINGS_ENABLE_PUSH, | |
| 3580 * SETTINGS_MAX_CONCURRENT_STREAMS, SETTINGS_INITIAL_WINDOW_SIZE, | |
| 3581 * SETTINGS_MAX_FRAME_SIZE, SETTINGS_MAX_HEADER_LIST_SIZE | |
| 3582 * | |
| 3583 * Only SETTINGS_INITIAL_WINDOW_SIZE seems to be needed in | |
| 3584 * a simple client. | |
| 3585 */ | |
| 3586 | |
| 3587 if (ctx->setting_id == 0x04) { | |
| 3588 /* SETTINGS_INITIAL_WINDOW_SIZE */ | |
| 3589 | |
| 3590 if (ctx->setting_value > NGX_HTTP_V2_MAX_WINDOW) { | |
| 3591 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3592 "upstream sent settings frame " | |
| 3593 "with too large initial window size: %ui", | |
| 3594 ctx->setting_value); | |
| 3595 return NGX_ERROR; | |
| 3596 } | |
| 3597 | |
| 3598 window_update = ctx->setting_value | |
| 3599 - ctx->connection->init_window; | |
| 3600 ctx->connection->init_window = ctx->setting_value; | |
| 3601 | |
| 3602 if (ctx->send_window > 0 | |
| 3603 && window_update > (ssize_t) NGX_HTTP_V2_MAX_WINDOW | |
| 3604 - ctx->send_window) | |
| 3605 { | |
| 3606 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3607 "upstream sent settings frame " | |
| 3608 "with too large initial window size: %ui", | |
| 3609 ctx->setting_value); | |
| 3610 return NGX_ERROR; | |
| 3611 } | |
| 3612 | |
| 3613 ctx->send_window += window_update; | |
| 3614 } | |
| 3615 | |
| 3616 break; | |
| 3617 } | |
| 3618 } | |
| 3619 | |
| 3620 ctx->rest -= p - b->pos; | |
| 3621 ctx->frame_state = state; | |
| 3622 b->pos = p; | |
| 3623 | |
| 3624 if (ctx->rest > 0) { | |
| 3625 return NGX_AGAIN; | |
| 3626 } | |
| 3627 | |
| 3628 ctx->state = ngx_http_grpc_st_start; | |
| 3629 | |
| 3630 return ngx_http_grpc_send_settings_ack(r, ctx); | |
| 3631 } | |
| 3632 | |
| 3633 | |
| 3634 static ngx_int_t | |
| 3635 ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
| 3636 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
| 3637 { | |
| 3638 u_char ch, *p, *last; | |
| 3639 enum { | |
| 3640 sw_start = 0, | |
| 3641 sw_data_2, | |
| 3642 sw_data_3, | |
| 3643 sw_data_4, | |
| 3644 sw_data_5, | |
| 3645 sw_data_6, | |
| 3646 sw_data_7, | |
| 3647 sw_data_8 | |
| 3648 } state; | |
| 3649 | |
| 3650 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3651 last = b->last; | |
| 3652 | |
| 3653 } else { | |
| 3654 last = b->pos + ctx->rest; | |
| 3655 } | |
| 3656 | |
| 3657 state = ctx->frame_state; | |
| 3658 | |
| 3659 if (state == sw_start) { | |
| 3660 | |
| 3661 if (ctx->stream_id) { | |
| 3662 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3663 "upstream sent ping frame " | |
| 3664 "with non-zero stream id: %ui", | |
| 3665 ctx->stream_id); | |
| 3666 return NGX_ERROR; | |
| 3667 } | |
| 3668 | |
| 3669 if (ctx->rest != 8) { | |
| 3670 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3671 "upstream sent ping frame " | |
| 3672 "with invalid length: %uz", | |
| 3673 ctx->rest); | |
| 3674 return NGX_ERROR; | |
| 3675 } | |
| 3676 | |
| 3677 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
| 3678 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3679 "upstream sent ping frame with ack flag"); | |
| 3680 return NGX_ERROR; | |
| 3681 } | |
| 3682 } | |
| 3683 | |
| 3684 for (p = b->pos; p < last; p++) { | |
| 3685 ch = *p; | |
| 3686 | |
| 3687 #if 0 | |
| 3688 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3689 "grpc ping byte: %02Xd s:%d", ch, state); | |
| 3690 #endif | |
| 3691 | |
| 3692 if (state < sw_data_8) { | |
| 3693 ctx->ping_data[state] = ch; | |
| 3694 state++; | |
| 3695 | |
| 3696 } else { | |
| 3697 ctx->ping_data[7] = ch; | |
| 3698 state = sw_start; | |
| 3699 | |
| 3700 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3701 "grpc ping"); | |
| 3702 } | |
| 3703 } | |
| 3704 | |
| 3705 ctx->rest -= p - b->pos; | |
| 3706 ctx->frame_state = state; | |
| 3707 b->pos = p; | |
| 3708 | |
| 3709 if (ctx->rest > 0) { | |
| 3710 return NGX_AGAIN; | |
| 3711 } | |
| 3712 | |
| 3713 ctx->state = ngx_http_grpc_st_start; | |
| 3714 | |
| 3715 return ngx_http_grpc_send_ping_ack(r, ctx); | |
| 3716 } | |
| 3717 | |
| 3718 | |
| 3719 static ngx_int_t | |
| 3720 ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3721 { | |
| 3722 ngx_chain_t *cl, **ll; | |
| 3723 ngx_http_grpc_frame_t *f; | |
| 3724 | |
| 3725 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3726 "grpc send settings ack"); | |
| 3727 | |
| 3728 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3729 ll = &cl->next; | |
| 3730 } | |
| 3731 | |
| 3732 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3733 if (cl == NULL) { | |
| 3734 return NGX_ERROR; | |
| 3735 } | |
| 3736 | |
| 3737 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3738 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3739 | |
| 3740 f->length_0 = 0; | |
| 3741 f->length_1 = 0; | |
| 3742 f->length_2 = 0; | |
| 3743 f->type = NGX_HTTP_V2_SETTINGS_FRAME; | |
| 3744 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
| 3745 f->stream_id_0 = 0; | |
| 3746 f->stream_id_1 = 0; | |
| 3747 f->stream_id_2 = 0; | |
| 3748 f->stream_id_3 = 0; | |
| 3749 | |
| 3750 *ll = cl; | |
| 3751 | |
| 3752 return NGX_OK; | |
| 3753 } | |
| 3754 | |
| 3755 | |
| 3756 static ngx_int_t | |
| 3757 ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3758 { | |
| 3759 ngx_chain_t *cl, **ll; | |
| 3760 ngx_http_grpc_frame_t *f; | |
| 3761 | |
| 3762 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3763 "grpc send ping ack"); | |
| 3764 | |
| 3765 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3766 ll = &cl->next; | |
| 3767 } | |
| 3768 | |
| 3769 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3770 if (cl == NULL) { | |
| 3771 return NGX_ERROR; | |
| 3772 } | |
| 3773 | |
| 3774 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3775 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3776 | |
| 3777 f->length_0 = 0; | |
| 3778 f->length_1 = 0; | |
| 3779 f->length_2 = 8; | |
| 3780 f->type = NGX_HTTP_V2_PING_FRAME; | |
| 3781 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
| 3782 f->stream_id_0 = 0; | |
| 3783 f->stream_id_1 = 0; | |
| 3784 f->stream_id_2 = 0; | |
| 3785 f->stream_id_3 = 0; | |
| 3786 | |
| 3787 cl->buf->last = ngx_copy(cl->buf->last, ctx->ping_data, 8); | |
| 3788 | |
| 3789 *ll = cl; | |
| 3790 | |
| 3791 return NGX_OK; | |
| 3792 } | |
| 3793 | |
| 3794 | |
| 3795 static ngx_int_t | |
| 3796 ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
| 3797 ngx_http_grpc_ctx_t *ctx) | |
| 3798 { | |
| 3799 size_t n; | |
| 3800 ngx_chain_t *cl, **ll; | |
| 3801 ngx_http_grpc_frame_t *f; | |
| 3802 | |
| 3803 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3804 "grpc send window update: %uz %uz", | |
| 3805 ctx->connection->recv_window, ctx->recv_window); | |
| 3806 | |
| 3807 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3808 ll = &cl->next; | |
| 3809 } | |
| 3810 | |
| 3811 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3812 if (cl == NULL) { | |
| 3813 return NGX_ERROR; | |
| 3814 } | |
| 3815 | |
| 3816 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3817 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3818 | |
| 3819 f->length_0 = 0; | |
| 3820 f->length_1 = 0; | |
| 3821 f->length_2 = 4; | |
| 3822 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
| 3823 f->flags = 0; | |
| 3824 f->stream_id_0 = 0; | |
| 3825 f->stream_id_1 = 0; | |
| 3826 f->stream_id_2 = 0; | |
| 3827 f->stream_id_3 = 0; | |
| 3828 | |
| 3829 n = NGX_HTTP_V2_MAX_WINDOW - ctx->connection->recv_window; | |
| 3830 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3831 | |
| 3832 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
| 3833 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
| 3834 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
| 3835 *cl->buf->last++ = (u_char) (n & 0xff); | |
| 3836 | |
| 3837 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3838 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3839 | |
| 3840 f->length_0 = 0; | |
| 3841 f->length_1 = 0; | |
| 3842 f->length_2 = 4; | |
| 3843 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
| 3844 f->flags = 0; | |
| 3845 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 3846 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 3847 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 3848 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 3849 | |
| 3850 n = NGX_HTTP_V2_MAX_WINDOW - ctx->recv_window; | |
| 3851 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3852 | |
| 3853 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
| 3854 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
| 3855 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
| 3856 *cl->buf->last++ = (u_char) (n & 0xff); | |
| 3857 | |
| 3858 *ll = cl; | |
| 3859 | |
| 3860 return NGX_OK; | |
| 3861 } | |
| 3862 | |
| 3863 | |
| 3864 static ngx_chain_t * | |
| 3865 ngx_http_grpc_get_buf(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3866 { | |
| 3867 ngx_buf_t *b; | |
| 3868 ngx_chain_t *cl; | |
| 3869 | |
| 3870 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
| 3871 if (cl == NULL) { | |
| 3872 return NULL; | |
| 3873 } | |
| 3874 | |
| 3875 b = cl->buf; | |
| 3876 | |
| 3877 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
| 3878 b->temporary = 1; | |
| 3879 b->flush = 1; | |
| 3880 | |
| 3881 if (b->start == NULL) { | |
| 3882 | |
| 3883 /* | |
| 3884 * each buffer is large enough to hold two window update | |
| 3885 * frames in a row | |
| 3886 */ | |
| 3887 | |
| 3888 b->start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8); | |
| 3889 if (b->start == NULL) { | |
| 3890 return NULL; | |
| 3891 } | |
| 3892 | |
| 3893 b->pos = b->start; | |
| 3894 b->last = b->start; | |
| 3895 | |
| 3896 b->end = b->start + 2 * sizeof(ngx_http_grpc_frame_t) + 8; | |
| 3897 } | |
| 3898 | |
| 3899 return cl; | |
| 3900 } | |
| 3901 | |
| 3902 | |
| 3903 static ngx_http_grpc_ctx_t * | |
| 3904 ngx_http_grpc_get_ctx(ngx_http_request_t *r) | |
| 3905 { | |
| 3906 ngx_http_grpc_ctx_t *ctx; | |
| 3907 ngx_http_upstream_t *u; | |
| 3908 | |
| 3909 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
| 3910 | |
| 3911 if (ctx->connection == NULL) { | |
| 3912 u = r->upstream; | |
| 3913 | |
| 3914 if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) { | |
| 3915 return NULL; | |
| 3916 } | |
| 3917 } | |
| 3918 | |
| 3919 return ctx; | |
| 3920 } | |
| 3921 | |
| 3922 | |
| 3923 static ngx_int_t | |
| 3924 ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
| 3925 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc) | |
| 3926 { | |
| 3927 ngx_connection_t *c; | |
| 3928 ngx_pool_cleanup_t *cln; | |
| 3929 | |
| 3930 c = pc->connection; | |
| 3931 | |
| 3932 if (pc->cached) { | |
| 3933 | |
| 3934 /* | |
| 3935 * for cached connections, connection data can be found | |
| 3936 * in the cleanup handler | |
| 3937 */ | |
| 3938 | |
| 3939 for (cln = c->pool->cleanup; cln; cln = cln->next) { | |
| 3940 if (cln->handler == ngx_http_grpc_cleanup) { | |
| 3941 ctx->connection = cln->data; | |
| 3942 break; | |
| 3943 } | |
| 3944 } | |
| 3945 | |
| 3946 if (ctx->connection == NULL) { | |
| 3947 ngx_log_error(NGX_LOG_ERR, c->log, 0, | |
| 3948 "no connection data found for " | |
| 3949 "keepalive http2 connection"); | |
| 3950 return NGX_ERROR; | |
| 3951 } | |
| 3952 | |
| 3953 ctx->send_window = ctx->connection->init_window; | |
| 3954 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3955 | |
| 3956 ctx->connection->last_stream_id += 2; | |
| 3957 ctx->id = ctx->connection->last_stream_id; | |
| 3958 | |
| 3959 return NGX_OK; | |
| 3960 } | |
| 3961 | |
| 3962 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t)); | |
| 3963 if (cln == NULL) { | |
| 3964 return NGX_ERROR; | |
| 3965 } | |
| 3966 | |
| 3967 cln->handler = ngx_http_grpc_cleanup; | |
| 3968 ctx->connection = cln->data; | |
| 3969 | |
| 3970 ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 3971 ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 3972 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3973 | |
| 3974 ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 3975 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3976 | |
| 3977 ctx->id = 1; | |
| 3978 ctx->connection->last_stream_id = 1; | |
| 3979 | |
| 3980 return NGX_OK; | |
| 3981 } | |
| 3982 | |
| 3983 | |
| 3984 static void | |
| 3985 ngx_http_grpc_cleanup(void *data) | |
| 3986 { | |
| 3987 #if 0 | |
| 3988 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 3989 "grpc cleanup"); | |
| 3990 #endif | |
| 3991 return; | |
| 3992 } | |
| 3993 | |
| 3994 | |
| 3995 static void | |
| 3996 ngx_http_grpc_abort_request(ngx_http_request_t *r) | |
| 3997 { | |
| 3998 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3999 "abort grpc request"); | |
| 4000 return; | |
| 4001 } | |
| 4002 | |
| 4003 | |
| 4004 static void | |
| 4005 ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
| 4006 { | |
| 4007 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 4008 "finalize grpc request"); | |
| 4009 return; | |
| 4010 } | |
| 4011 | |
| 4012 | |
|
7234
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|
4013 static ngx_int_t |
|
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|
4014 ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r, |
|
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|
4015 ngx_http_variable_value_t *v, uintptr_t data) |
|
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|
4016 { |
|
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|
4017 ngx_table_elt_t *te; |
|
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|
4018 |
|
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|
4019 te = r->headers_in.te; |
|
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|
4020 |
|
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|
4021 if (te == NULL) { |
|
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|
4022 v->not_found = 1; |
|
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|
4023 return NGX_OK; |
|
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|
4024 } |
|
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|
4025 |
|
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|
4026 if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len, |
|
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changeset
|
4027 (u_char *) "trailers", 8 - 1) |
|
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|
4028 == NULL) |
|
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|
4029 { |
|
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|
4030 v->not_found = 1; |
|
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|
4031 return NGX_OK; |
|
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|
4032 } |
|
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|
4033 |
|
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|
4034 v->valid = 1; |
|
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|
4035 v->no_cacheable = 0; |
|
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|
4036 v->not_found = 0; |
|
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|
4037 |
|
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|
4038 v->data = (u_char *) "trailers"; |
|
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|
4039 v->len = sizeof("trailers") - 1; |
|
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|
4040 |
|
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|
4041 return NGX_OK; |
|
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|
4042 } |
|
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|
4043 |
|
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|
4044 |
|
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|
4045 static ngx_int_t |
|
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|
4046 ngx_http_grpc_add_variables(ngx_conf_t *cf) |
|
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|
4047 { |
|
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|
4048 ngx_http_variable_t *var, *v; |
|
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|
4049 |
|
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|
4050 for (v = ngx_http_grpc_vars; v->name.len; v++) { |
|
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|
4051 var = ngx_http_add_variable(cf, &v->name, v->flags); |
|
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|
4052 if (var == NULL) { |
|
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|
4053 return NGX_ERROR; |
|
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|
4054 } |
|
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|
4055 |
|
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|
4056 var->get_handler = v->get_handler; |
|
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|
4057 var->data = v->data; |
|
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|
4058 } |
|
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|
4059 |
|
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|
4060 return NGX_OK; |
|
c693daca57f7
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|
4061 } |
|
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|
4062 |
|
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|
4063 |
| 7233 | 4064 static void * |
| 4065 ngx_http_grpc_create_loc_conf(ngx_conf_t *cf) | |
| 4066 { | |
| 4067 ngx_http_grpc_loc_conf_t *conf; | |
| 4068 | |
| 4069 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t)); | |
| 4070 if (conf == NULL) { | |
| 4071 return NULL; | |
| 4072 } | |
| 4073 | |
| 4074 /* | |
| 4075 * set by ngx_pcalloc(): | |
| 4076 * | |
| 4077 * conf->upstream.ignore_headers = 0; | |
| 4078 * conf->upstream.next_upstream = 0; | |
| 4079 * conf->upstream.hide_headers_hash = { NULL, 0 }; | |
| 4080 * conf->upstream.ssl_name = NULL; | |
| 4081 * | |
| 4082 * conf->headers_source = NULL; | |
| 4083 * conf->headers.lengths = NULL; | |
| 4084 * conf->headers.values = NULL; | |
| 4085 * conf->headers.hash = { NULL, 0 }; | |
| 4086 * conf->host = { 0, NULL }; | |
| 4087 * conf->host_set = 0; | |
| 4088 * conf->ssl = 0; | |
| 4089 * conf->ssl_protocols = 0; | |
| 4090 * conf->ssl_ciphers = { 0, NULL }; | |
| 4091 * conf->ssl_trusted_certificate = { 0, NULL }; | |
| 4092 * conf->ssl_crl = { 0, NULL }; | |
| 4093 * conf->ssl_certificate = { 0, NULL }; | |
| 4094 * conf->ssl_certificate_key = { 0, NULL }; | |
| 4095 */ | |
| 4096 | |
| 4097 conf->upstream.local = NGX_CONF_UNSET_PTR; | |
| 4098 conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; | |
| 4099 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
| 4100 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
| 4101 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
| 4102 conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
| 4103 | |
| 4104 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
| 4105 | |
| 4106 conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; | |
| 4107 conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; | |
| 4108 | |
| 4109 conf->upstream.intercept_errors = NGX_CONF_UNSET; | |
| 4110 | |
| 4111 #if (NGX_HTTP_SSL) | |
| 4112 conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; | |
| 4113 conf->upstream.ssl_server_name = NGX_CONF_UNSET; | |
| 4114 conf->upstream.ssl_verify = NGX_CONF_UNSET; | |
| 4115 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
| 4116 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
| 4117 #endif | |
| 4118 | |
| 4119 /* the hardcoded values */ | |
| 4120 conf->upstream.cyclic_temp_file = 0; | |
| 4121 conf->upstream.buffering = 0; | |
| 4122 conf->upstream.ignore_client_abort = 0; | |
| 4123 conf->upstream.send_lowat = 0; | |
| 4124 conf->upstream.bufs.num = 0; | |
| 4125 conf->upstream.busy_buffers_size = 0; | |
| 4126 conf->upstream.max_temp_file_size = 0; | |
| 4127 conf->upstream.temp_file_write_size = 0; | |
| 4128 conf->upstream.pass_request_headers = 1; | |
| 4129 conf->upstream.pass_request_body = 1; | |
| 4130 conf->upstream.force_ranges = 0; | |
| 4131 conf->upstream.pass_trailers = 1; | |
| 4132 conf->upstream.preserve_output = 1; | |
| 4133 | |
| 4134 ngx_str_set(&conf->upstream.module, "grpc"); | |
| 4135 | |
| 4136 return conf; | |
| 4137 } | |
| 4138 | |
| 4139 | |
| 4140 static char * | |
| 4141 ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 4142 { | |
| 4143 ngx_http_grpc_loc_conf_t *prev = parent; | |
| 4144 ngx_http_grpc_loc_conf_t *conf = child; | |
| 4145 | |
| 4146 ngx_int_t rc; | |
| 4147 ngx_hash_init_t hash; | |
| 4148 ngx_http_core_loc_conf_t *clcf; | |
| 4149 | |
| 4150 ngx_conf_merge_ptr_value(conf->upstream.local, | |
| 4151 prev->upstream.local, NULL); | |
| 4152 | |
| 4153 ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, | |
| 4154 prev->upstream.next_upstream_tries, 0); | |
| 4155 | |
| 4156 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
| 4157 prev->upstream.connect_timeout, 60000); | |
| 4158 | |
| 4159 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
| 4160 prev->upstream.send_timeout, 60000); | |
| 4161 | |
| 4162 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
| 4163 prev->upstream.read_timeout, 60000); | |
| 4164 | |
| 4165 ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, | |
| 4166 prev->upstream.next_upstream_timeout, 0); | |
| 4167 | |
| 4168 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
| 4169 prev->upstream.buffer_size, | |
| 4170 (size_t) ngx_pagesize); | |
| 4171 | |
| 4172 ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, | |
| 4173 prev->upstream.ignore_headers, | |
| 4174 NGX_CONF_BITMASK_SET); | |
| 4175 | |
| 4176 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
| 4177 prev->upstream.next_upstream, | |
| 4178 (NGX_CONF_BITMASK_SET | |
| 4179 |NGX_HTTP_UPSTREAM_FT_ERROR | |
| 4180 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
| 4181 | |
| 4182 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { | |
| 4183 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
| 4184 |NGX_HTTP_UPSTREAM_FT_OFF; | |
| 4185 } | |
| 4186 | |
| 4187 ngx_conf_merge_value(conf->upstream.intercept_errors, | |
| 4188 prev->upstream.intercept_errors, 0); | |
| 4189 | |
| 4190 #if (NGX_HTTP_SSL) | |
| 4191 | |
| 4192 ngx_conf_merge_value(conf->upstream.ssl_session_reuse, | |
| 4193 prev->upstream.ssl_session_reuse, 1); | |
| 4194 | |
| 4195 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
| 4196 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 | |
| 4197 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); | |
| 4198 | |
| 4199 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, | |
| 4200 "DEFAULT"); | |
| 4201 | |
| 4202 if (conf->upstream.ssl_name == NULL) { | |
| 4203 conf->upstream.ssl_name = prev->upstream.ssl_name; | |
| 4204 } | |
| 4205 | |
| 4206 ngx_conf_merge_value(conf->upstream.ssl_server_name, | |
| 4207 prev->upstream.ssl_server_name, 0); | |
| 4208 ngx_conf_merge_value(conf->upstream.ssl_verify, | |
| 4209 prev->upstream.ssl_verify, 0); | |
| 4210 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
| 4211 prev->ssl_verify_depth, 1); | |
| 4212 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
| 4213 prev->ssl_trusted_certificate, ""); | |
| 4214 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
| 4215 | |
| 4216 ngx_conf_merge_str_value(conf->ssl_certificate, | |
| 4217 prev->ssl_certificate, ""); | |
| 4218 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
| 4219 prev->ssl_certificate_key, ""); | |
| 4220 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
| 4221 | |
| 4222 if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) { | |
| 4223 return NGX_CONF_ERROR; | |
| 4224 } | |
| 4225 | |
| 4226 #endif | |
| 4227 | |
| 4228 hash.max_size = 512; | |
| 4229 hash.bucket_size = ngx_align(64, ngx_cacheline_size); | |
| 4230 hash.name = "grpc_headers_hash"; | |
| 4231 | |
| 4232 if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, | |
| 4233 &prev->upstream, ngx_http_grpc_hide_headers, &hash) | |
| 4234 != NGX_OK) | |
| 4235 { | |
| 4236 return NGX_CONF_ERROR; | |
| 4237 } | |
| 4238 | |
| 4239 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 4240 | |
| 4241 if (clcf->noname && conf->upstream.upstream == NULL) { | |
| 4242 conf->upstream.upstream = prev->upstream.upstream; | |
| 4243 conf->host = prev->host; | |
| 4244 #if (NGX_HTTP_SSL) | |
| 4245 conf->upstream.ssl = prev->upstream.ssl; | |
| 4246 #endif | |
| 4247 } | |
| 4248 | |
| 4249 if (clcf->lmt_excpt && clcf->handler == NULL && conf->upstream.upstream) { | |
| 4250 clcf->handler = ngx_http_grpc_handler; | |
| 4251 } | |
| 4252 | |
| 4253 if (conf->headers_source == NULL) { | |
| 4254 conf->headers = prev->headers; | |
| 4255 conf->headers_source = prev->headers_source; | |
| 4256 conf->host_set = prev->host_set; | |
| 4257 } | |
| 4258 | |
| 4259 rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers, | |
| 4260 ngx_http_grpc_headers); | |
| 4261 if (rc != NGX_OK) { | |
| 4262 return NGX_CONF_ERROR; | |
| 4263 } | |
| 4264 | |
| 4265 /* | |
| 4266 * special handling to preserve conf->headers in the "http" section | |
| 4267 * to inherit it to all servers | |
| 4268 */ | |
| 4269 | |
| 4270 if (prev->headers.hash.buckets == NULL | |
| 4271 && conf->headers_source == prev->headers_source) | |
| 4272 { | |
| 4273 prev->headers = conf->headers; | |
| 4274 prev->host_set = conf->host_set; | |
| 4275 } | |
| 4276 | |
| 4277 return NGX_CONF_OK; | |
| 4278 } | |
| 4279 | |
| 4280 | |
| 4281 static ngx_int_t | |
| 4282 ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf, | |
| 4283 ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers) | |
| 4284 { | |
| 4285 u_char *p; | |
| 4286 size_t size; | |
| 4287 uintptr_t *code; | |
| 4288 ngx_uint_t i; | |
| 4289 ngx_array_t headers_names, headers_merged; | |
| 4290 ngx_keyval_t *src, *s, *h; | |
| 4291 ngx_hash_key_t *hk; | |
| 4292 ngx_hash_init_t hash; | |
| 4293 ngx_http_script_compile_t sc; | |
| 4294 ngx_http_script_copy_code_t *copy; | |
| 4295 | |
| 4296 if (headers->hash.buckets) { | |
| 4297 return NGX_OK; | |
| 4298 } | |
| 4299 | |
| 4300 if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) | |
| 4301 != NGX_OK) | |
| 4302 { | |
| 4303 return NGX_ERROR; | |
| 4304 } | |
| 4305 | |
| 4306 if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) | |
| 4307 != NGX_OK) | |
| 4308 { | |
| 4309 return NGX_ERROR; | |
| 4310 } | |
| 4311 | |
| 4312 headers->lengths = ngx_array_create(cf->pool, 64, 1); | |
| 4313 if (headers->lengths == NULL) { | |
| 4314 return NGX_ERROR; | |
| 4315 } | |
| 4316 | |
| 4317 headers->values = ngx_array_create(cf->pool, 512, 1); | |
| 4318 if (headers->values == NULL) { | |
| 4319 return NGX_ERROR; | |
| 4320 } | |
| 4321 | |
| 4322 if (conf->headers_source) { | |
| 4323 | |
| 4324 src = conf->headers_source->elts; | |
| 4325 for (i = 0; i < conf->headers_source->nelts; i++) { | |
| 4326 | |
| 4327 if (src[i].key.len == 4 | |
| 4328 && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0) | |
| 4329 { | |
| 4330 conf->host_set = 1; | |
| 4331 } | |
| 4332 | |
| 4333 s = ngx_array_push(&headers_merged); | |
| 4334 if (s == NULL) { | |
| 4335 return NGX_ERROR; | |
| 4336 } | |
| 4337 | |
| 4338 *s = src[i]; | |
| 4339 } | |
| 4340 } | |
| 4341 | |
| 4342 h = default_headers; | |
| 4343 | |
| 4344 while (h->key.len) { | |
| 4345 | |
| 4346 src = headers_merged.elts; | |
| 4347 for (i = 0; i < headers_merged.nelts; i++) { | |
| 4348 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { | |
| 4349 goto next; | |
| 4350 } | |
| 4351 } | |
| 4352 | |
| 4353 s = ngx_array_push(&headers_merged); | |
| 4354 if (s == NULL) { | |
| 4355 return NGX_ERROR; | |
| 4356 } | |
| 4357 | |
| 4358 *s = *h; | |
| 4359 | |
| 4360 next: | |
| 4361 | |
| 4362 h++; | |
| 4363 } | |
| 4364 | |
| 4365 | |
| 4366 src = headers_merged.elts; | |
| 4367 for (i = 0; i < headers_merged.nelts; i++) { | |
| 4368 | |
| 4369 hk = ngx_array_push(&headers_names); | |
| 4370 if (hk == NULL) { | |
| 4371 return NGX_ERROR; | |
| 4372 } | |
| 4373 | |
| 4374 hk->key = src[i].key; | |
| 4375 hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); | |
| 4376 hk->value = (void *) 1; | |
| 4377 | |
| 4378 if (src[i].value.len == 0) { | |
| 4379 continue; | |
| 4380 } | |
| 4381 | |
| 4382 copy = ngx_array_push_n(headers->lengths, | |
| 4383 sizeof(ngx_http_script_copy_code_t)); | |
| 4384 if (copy == NULL) { | |
| 4385 return NGX_ERROR; | |
| 4386 } | |
| 4387 | |
| 4388 copy->code = (ngx_http_script_code_pt) ngx_http_script_copy_len_code; | |
| 4389 copy->len = src[i].key.len; | |
| 4390 | |
| 4391 size = (sizeof(ngx_http_script_copy_code_t) | |
| 4392 + src[i].key.len + sizeof(uintptr_t) - 1) | |
| 4393 & ~(sizeof(uintptr_t) - 1); | |
| 4394 | |
| 4395 copy = ngx_array_push_n(headers->values, size); | |
| 4396 if (copy == NULL) { | |
| 4397 return NGX_ERROR; | |
| 4398 } | |
| 4399 | |
| 4400 copy->code = ngx_http_script_copy_code; | |
| 4401 copy->len = src[i].key.len; | |
| 4402 | |
| 4403 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); | |
| 4404 ngx_memcpy(p, src[i].key.data, src[i].key.len); | |
| 4405 | |
| 4406 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 4407 | |
| 4408 sc.cf = cf; | |
| 4409 sc.source = &src[i].value; | |
| 4410 sc.flushes = &headers->flushes; | |
| 4411 sc.lengths = &headers->lengths; | |
| 4412 sc.values = &headers->values; | |
| 4413 | |
| 4414 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 4415 return NGX_ERROR; | |
| 4416 } | |
| 4417 | |
| 4418 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
| 4419 if (code == NULL) { | |
| 4420 return NGX_ERROR; | |
| 4421 } | |
| 4422 | |
| 4423 *code = (uintptr_t) NULL; | |
| 4424 | |
| 4425 code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); | |
| 4426 if (code == NULL) { | |
| 4427 return NGX_ERROR; | |
| 4428 } | |
| 4429 | |
| 4430 *code = (uintptr_t) NULL; | |
| 4431 } | |
| 4432 | |
| 4433 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
| 4434 if (code == NULL) { | |
| 4435 return NGX_ERROR; | |
| 4436 } | |
| 4437 | |
| 4438 *code = (uintptr_t) NULL; | |
| 4439 | |
| 4440 | |
| 4441 hash.hash = &headers->hash; | |
| 4442 hash.key = ngx_hash_key_lc; | |
| 4443 hash.max_size = 512; | |
| 4444 hash.bucket_size = 64; | |
| 4445 hash.name = "grpc_headers_hash"; | |
| 4446 hash.pool = cf->pool; | |
| 4447 hash.temp_pool = NULL; | |
| 4448 | |
| 4449 return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); | |
| 4450 } | |
| 4451 | |
| 4452 | |
| 4453 static char * | |
| 4454 ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 4455 { | |
| 4456 ngx_http_grpc_loc_conf_t *glcf = conf; | |
| 4457 | |
| 4458 size_t add; | |
| 4459 ngx_str_t *value, *url; | |
| 4460 ngx_url_t u; | |
| 4461 ngx_http_core_loc_conf_t *clcf; | |
| 4462 | |
| 4463 if (glcf->upstream.upstream) { | |
| 4464 return "is duplicate"; | |
| 4465 } | |
| 4466 | |
| 4467 value = cf->args->elts; | |
| 4468 url = &value[1]; | |
| 4469 | |
| 4470 if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) { | |
| 4471 add = 7; | |
| 4472 | |
| 4473 } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) { | |
| 4474 | |
| 4475 #if (NGX_HTTP_SSL) | |
| 4476 glcf->ssl = 1; | |
| 4477 | |
| 4478 add = 8; | |
| 4479 #else | |
| 4480 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 4481 "grpcs protocol requires SSL support"); | |
| 4482 return NGX_CONF_ERROR; | |
| 4483 #endif | |
| 4484 | |
| 4485 } else { | |
| 4486 add = 0; | |
| 4487 } | |
| 4488 | |
| 4489 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 4490 | |
| 4491 u.url.len = url->len - add; | |
| 4492 u.url.data = url->data + add; | |
| 4493 u.no_resolve = 1; | |
| 4494 | |
| 4495 glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); | |
| 4496 if (glcf->upstream.upstream == NULL) { | |
| 4497 return NGX_CONF_ERROR; | |
| 4498 } | |
| 4499 | |
| 4500 if (u.family != AF_UNIX) { | |
| 4501 | |
| 4502 if (u.no_port) { | |
| 4503 glcf->host = u.host; | |
| 4504 | |
| 4505 } else { | |
| 4506 glcf->host.len = u.host.len + 1 + u.port_text.len; | |
| 4507 glcf->host.data = u.host.data; | |
| 4508 } | |
| 4509 | |
| 4510 } else { | |
| 4511 ngx_str_set(&glcf->host, "localhost"); | |
| 4512 } | |
| 4513 | |
| 4514 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 4515 | |
| 4516 clcf->handler = ngx_http_grpc_handler; | |
| 4517 | |
| 4518 if (clcf->name.data[clcf->name.len - 1] == '/') { | |
| 4519 clcf->auto_redirect = 1; | |
| 4520 } | |
| 4521 | |
| 4522 return NGX_CONF_OK; | |
| 4523 } | |
| 4524 | |
| 4525 | |
| 4526 #if (NGX_HTTP_SSL) | |
| 4527 | |
| 4528 static char * | |
| 4529 ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 4530 { | |
| 4531 ngx_http_grpc_loc_conf_t *glcf = conf; | |
| 4532 | |
| 4533 ngx_str_t *value; | |
| 4534 | |
| 4535 if (glcf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
| 4536 return "is duplicate"; | |
| 4537 } | |
| 4538 | |
| 4539 value = cf->args->elts; | |
| 4540 | |
| 4541 glcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
| 4542 | |
| 4543 if (glcf->ssl_passwords == NULL) { | |
| 4544 return NGX_CONF_ERROR; | |
| 4545 } | |
| 4546 | |
| 4547 return NGX_CONF_OK; | |
| 4548 } | |
| 4549 | |
| 4550 | |
| 4551 static ngx_int_t | |
| 4552 ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf) | |
| 4553 { | |
| 4554 ngx_pool_cleanup_t *cln; | |
| 4555 | |
| 4556 glcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
| 4557 if (glcf->upstream.ssl == NULL) { | |
| 4558 return NGX_ERROR; | |
| 4559 } | |
| 4560 | |
| 4561 glcf->upstream.ssl->log = cf->log; | |
| 4562 | |
| 4563 if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL) | |
| 4564 != NGX_OK) | |
| 4565 { | |
| 4566 return NGX_ERROR; | |
| 4567 } | |
| 4568 | |
| 4569 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
| 4570 if (cln == NULL) { | |
| 4571 return NGX_ERROR; | |
| 4572 } | |
| 4573 | |
| 4574 cln->handler = ngx_ssl_cleanup_ctx; | |
| 4575 cln->data = glcf->upstream.ssl; | |
| 4576 | |
| 4577 if (glcf->ssl_certificate.len) { | |
| 4578 | |
| 4579 if (glcf->ssl_certificate_key.len == 0) { | |
| 4580 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4581 "no \"grpc_ssl_certificate_key\" is defined " | |
| 4582 "for certificate \"%V\"", &glcf->ssl_certificate); | |
| 4583 return NGX_ERROR; | |
| 4584 } | |
| 4585 | |
| 4586 if (ngx_ssl_certificate(cf, glcf->upstream.ssl, &glcf->ssl_certificate, | |
| 4587 &glcf->ssl_certificate_key, glcf->ssl_passwords) | |
| 4588 != NGX_OK) | |
| 4589 { | |
| 4590 return NGX_ERROR; | |
| 4591 } | |
| 4592 } | |
| 4593 | |
| 4594 if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0) | |
| 4595 != NGX_OK) | |
| 4596 { | |
| 4597 return NGX_ERROR; | |
| 4598 } | |
| 4599 | |
| 4600 if (glcf->upstream.ssl_verify) { | |
| 4601 if (glcf->ssl_trusted_certificate.len == 0) { | |
| 4602 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4603 "no grpc_ssl_trusted_certificate for grpc_ssl_verify"); | |
| 4604 return NGX_ERROR; | |
| 4605 } | |
| 4606 | |
| 4607 if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl, | |
| 4608 &glcf->ssl_trusted_certificate, | |
| 4609 glcf->ssl_verify_depth) | |
| 4610 != NGX_OK) | |
| 4611 { | |
| 4612 return NGX_ERROR; | |
| 4613 } | |
| 4614 | |
| 4615 if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) { | |
| 4616 return NGX_ERROR; | |
| 4617 } | |
| 4618 } | |
| 4619 | |
| 4620 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation | |
| 4621 | |
| 4622 if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx, | |
| 4623 (u_char *) "\x02h2", 3) | |
| 4624 != 0) | |
| 4625 { | |
| 4626 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4627 "SSL_CTX_set_alpn_protos() failed"); | |
| 4628 return NGX_ERROR; | |
| 4629 } | |
| 4630 | |
| 4631 #endif | |
| 4632 | |
| 4633 return NGX_OK; | |
| 4634 } | |
| 4635 | |
| 4636 #endif |