Mercurial > hg > nginx
annotate src/http/modules/ngx_http_grpc_module.c @ 7473:8981dbb12254
SSL: fixed potential leak on memory allocation errors.
If ngx_pool_cleanup_add() fails, we have to clean just created SSL context
manually, thus appropriate call added.
Additionally, ngx_pool_cleanup_add() moved closer to ngx_ssl_create() in
the ngx_http_ssl_module, to make sure there are no leaks due to intermediate
code.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Sun, 03 Mar 2019 16:48:39 +0300 |
| parents | 57463f4e2fcd |
| children | 6439ef81e37d |
| 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 | |
|
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gRPC: limited allocations due to ping and settings frames.
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81 ngx_uint_t pings; |
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gRPC: limited allocations due to ping and settings frames.
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82 ngx_uint_t settings; |
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gRPC: limited allocations due to ping and settings frames.
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83 |
| 7233 | 84 ssize_t send_window; |
| 85 size_t recv_window; | |
| 86 | |
| 87 size_t rest; | |
| 88 ngx_uint_t stream_id; | |
| 89 u_char type; | |
| 90 u_char flags; | |
| 91 u_char padding; | |
| 92 | |
| 93 ngx_uint_t error; | |
| 94 ngx_uint_t window_update; | |
| 95 | |
| 96 ngx_uint_t setting_id; | |
| 97 ngx_uint_t setting_value; | |
| 98 | |
| 99 u_char ping_data[8]; | |
| 100 | |
| 101 ngx_uint_t index; | |
| 102 ngx_str_t name; | |
| 103 ngx_str_t value; | |
| 104 | |
| 105 u_char *field_end; | |
| 106 size_t field_length; | |
| 107 size_t field_rest; | |
| 108 u_char field_state; | |
| 109 | |
| 110 unsigned literal:1; | |
| 111 unsigned field_huffman:1; | |
| 112 | |
| 113 unsigned header_sent:1; | |
| 114 unsigned output_closed:1; | |
|
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gRPC: disabled keepalive when sending control frames was blocked.
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115 unsigned output_blocked:1; |
| 7233 | 116 unsigned parsing_headers:1; |
| 117 unsigned end_stream:1; | |
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118 unsigned done:1; |
| 7233 | 119 unsigned status:1; |
| 120 | |
| 121 ngx_http_request_t *request; | |
| 122 } ngx_http_grpc_ctx_t; | |
| 123 | |
| 124 | |
| 125 typedef struct { | |
| 126 u_char length_0; | |
| 127 u_char length_1; | |
| 128 u_char length_2; | |
| 129 u_char type; | |
| 130 u_char flags; | |
| 131 u_char stream_id_0; | |
| 132 u_char stream_id_1; | |
| 133 u_char stream_id_2; | |
| 134 u_char stream_id_3; | |
| 135 } ngx_http_grpc_frame_t; | |
| 136 | |
| 137 | |
| 138 static ngx_int_t ngx_http_grpc_create_request(ngx_http_request_t *r); | |
| 139 static ngx_int_t ngx_http_grpc_reinit_request(ngx_http_request_t *r); | |
| 140 static ngx_int_t ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in); | |
| 141 static ngx_int_t ngx_http_grpc_process_header(ngx_http_request_t *r); | |
| 142 static ngx_int_t ngx_http_grpc_filter_init(void *data); | |
| 143 static ngx_int_t ngx_http_grpc_filter(void *data, ssize_t bytes); | |
| 144 | |
| 145 static ngx_int_t ngx_http_grpc_parse_frame(ngx_http_request_t *r, | |
| 146 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 147 static ngx_int_t ngx_http_grpc_parse_header(ngx_http_request_t *r, | |
| 148 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 149 static ngx_int_t ngx_http_grpc_parse_fragment(ngx_http_request_t *r, | |
| 150 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 151 static ngx_int_t ngx_http_grpc_validate_header_name(ngx_http_request_t *r, | |
| 152 ngx_str_t *s); | |
| 153 static ngx_int_t ngx_http_grpc_validate_header_value(ngx_http_request_t *r, | |
| 154 ngx_str_t *s); | |
| 155 static ngx_int_t ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, | |
| 156 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 157 static ngx_int_t ngx_http_grpc_parse_goaway(ngx_http_request_t *r, | |
| 158 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 159 static ngx_int_t ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
| 160 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 161 static ngx_int_t ngx_http_grpc_parse_settings(ngx_http_request_t *r, | |
| 162 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 163 static ngx_int_t ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
| 164 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 165 | |
| 166 static ngx_int_t ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, | |
| 167 ngx_http_grpc_ctx_t *ctx); | |
| 168 static ngx_int_t ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, | |
| 169 ngx_http_grpc_ctx_t *ctx); | |
| 170 static ngx_int_t ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
| 171 ngx_http_grpc_ctx_t *ctx); | |
| 172 | |
| 173 static ngx_chain_t *ngx_http_grpc_get_buf(ngx_http_request_t *r, | |
| 174 ngx_http_grpc_ctx_t *ctx); | |
| 175 static ngx_http_grpc_ctx_t *ngx_http_grpc_get_ctx(ngx_http_request_t *r); | |
| 176 static ngx_int_t ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
| 177 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc); | |
| 178 static void ngx_http_grpc_cleanup(void *data); | |
| 179 | |
| 180 static void ngx_http_grpc_abort_request(ngx_http_request_t *r); | |
| 181 static void ngx_http_grpc_finalize_request(ngx_http_request_t *r, | |
| 182 ngx_int_t rc); | |
| 183 | |
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gRPC: special handling of the TE request header.
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184 static ngx_int_t ngx_http_grpc_internal_trailers_variable( |
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185 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); |
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186 |
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187 static ngx_int_t ngx_http_grpc_add_variables(ngx_conf_t *cf); |
| 7233 | 188 static void *ngx_http_grpc_create_loc_conf(ngx_conf_t *cf); |
| 189 static char *ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, | |
| 190 void *parent, void *child); | |
| 191 static ngx_int_t ngx_http_grpc_init_headers(ngx_conf_t *cf, | |
| 192 ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_headers_t *headers, | |
| 193 ngx_keyval_t *default_headers); | |
| 194 | |
| 195 static char *ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 196 void *conf); | |
| 197 | |
| 198 #if (NGX_HTTP_SSL) | |
| 199 static char *ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, | |
| 200 ngx_command_t *cmd, void *conf); | |
| 201 static ngx_int_t ngx_http_grpc_set_ssl(ngx_conf_t *cf, | |
| 202 ngx_http_grpc_loc_conf_t *glcf); | |
| 203 #endif | |
| 204 | |
| 205 | |
| 206 static ngx_conf_bitmask_t ngx_http_grpc_next_upstream_masks[] = { | |
| 207 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
| 208 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
| 209 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
| 210 { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT }, | |
| 211 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, | |
| 212 { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 }, | |
| 213 { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, | |
| 214 { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 }, | |
| 215 { ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 }, | |
| 216 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
| 217 { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 }, | |
| 218 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, | |
| 219 { ngx_null_string, 0 } | |
| 220 }; | |
| 221 | |
| 222 | |
| 223 #if (NGX_HTTP_SSL) | |
| 224 | |
| 225 static ngx_conf_bitmask_t ngx_http_grpc_ssl_protocols[] = { | |
| 226 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
| 227 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
| 228 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
| 229 { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, | |
| 230 { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, | |
| 231 { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, | |
| 232 { ngx_null_string, 0 } | |
| 233 }; | |
| 234 | |
| 235 #endif | |
| 236 | |
| 237 | |
| 238 static ngx_command_t ngx_http_grpc_commands[] = { | |
| 239 | |
| 240 { ngx_string("grpc_pass"), | |
| 241 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
| 242 ngx_http_grpc_pass, | |
| 243 NGX_HTTP_LOC_CONF_OFFSET, | |
| 244 0, | |
| 245 NULL }, | |
| 246 | |
| 247 { ngx_string("grpc_bind"), | |
| 248 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, | |
| 249 ngx_http_upstream_bind_set_slot, | |
| 250 NGX_HTTP_LOC_CONF_OFFSET, | |
| 251 offsetof(ngx_http_grpc_loc_conf_t, upstream.local), | |
| 252 NULL }, | |
| 253 | |
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254 { ngx_string("grpc_socket_keepalive"), |
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255 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
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256 ngx_conf_set_flag_slot, |
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257 NGX_HTTP_LOC_CONF_OFFSET, |
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258 offsetof(ngx_http_grpc_loc_conf_t, upstream.socket_keepalive), |
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259 NULL }, |
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260 |
| 7233 | 261 { ngx_string("grpc_connect_timeout"), |
| 262 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 263 ngx_conf_set_msec_slot, | |
| 264 NGX_HTTP_LOC_CONF_OFFSET, | |
| 265 offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout), | |
| 266 NULL }, | |
| 267 | |
| 268 { ngx_string("grpc_send_timeout"), | |
| 269 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 270 ngx_conf_set_msec_slot, | |
| 271 NGX_HTTP_LOC_CONF_OFFSET, | |
| 272 offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout), | |
| 273 NULL }, | |
| 274 | |
| 275 { ngx_string("grpc_intercept_errors"), | |
| 276 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 277 ngx_conf_set_flag_slot, | |
| 278 NGX_HTTP_LOC_CONF_OFFSET, | |
| 279 offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors), | |
| 280 NULL }, | |
| 281 | |
| 282 { ngx_string("grpc_buffer_size"), | |
| 283 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 284 ngx_conf_set_size_slot, | |
| 285 NGX_HTTP_LOC_CONF_OFFSET, | |
| 286 offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size), | |
| 287 NULL }, | |
| 288 | |
| 289 { ngx_string("grpc_read_timeout"), | |
| 290 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 291 ngx_conf_set_msec_slot, | |
| 292 NGX_HTTP_LOC_CONF_OFFSET, | |
| 293 offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout), | |
| 294 NULL }, | |
| 295 | |
| 296 { ngx_string("grpc_next_upstream"), | |
| 297 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 298 ngx_conf_set_bitmask_slot, | |
| 299 NGX_HTTP_LOC_CONF_OFFSET, | |
| 300 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream), | |
| 301 &ngx_http_grpc_next_upstream_masks }, | |
| 302 | |
| 303 { ngx_string("grpc_next_upstream_tries"), | |
| 304 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 305 ngx_conf_set_num_slot, | |
| 306 NGX_HTTP_LOC_CONF_OFFSET, | |
| 307 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries), | |
| 308 NULL }, | |
| 309 | |
| 310 { ngx_string("grpc_next_upstream_timeout"), | |
| 311 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 312 ngx_conf_set_msec_slot, | |
| 313 NGX_HTTP_LOC_CONF_OFFSET, | |
| 314 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout), | |
| 315 NULL }, | |
| 316 | |
| 317 { ngx_string("grpc_set_header"), | |
| 318 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
| 319 ngx_conf_set_keyval_slot, | |
| 320 NGX_HTTP_LOC_CONF_OFFSET, | |
| 321 offsetof(ngx_http_grpc_loc_conf_t, headers_source), | |
| 322 NULL }, | |
| 323 | |
| 324 { ngx_string("grpc_pass_header"), | |
| 325 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 326 ngx_conf_set_str_array_slot, | |
| 327 NGX_HTTP_LOC_CONF_OFFSET, | |
| 328 offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers), | |
| 329 NULL }, | |
| 330 | |
| 331 { ngx_string("grpc_hide_header"), | |
| 332 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 333 ngx_conf_set_str_array_slot, | |
| 334 NGX_HTTP_LOC_CONF_OFFSET, | |
| 335 offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers), | |
| 336 NULL }, | |
| 337 | |
| 338 { ngx_string("grpc_ignore_headers"), | |
| 339 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 340 ngx_conf_set_bitmask_slot, | |
| 341 NGX_HTTP_LOC_CONF_OFFSET, | |
| 342 offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers), | |
| 343 &ngx_http_upstream_ignore_headers_masks }, | |
| 344 | |
| 345 #if (NGX_HTTP_SSL) | |
| 346 | |
| 347 { ngx_string("grpc_ssl_session_reuse"), | |
| 348 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 349 ngx_conf_set_flag_slot, | |
| 350 NGX_HTTP_LOC_CONF_OFFSET, | |
| 351 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse), | |
| 352 NULL }, | |
| 353 | |
| 354 { ngx_string("grpc_ssl_protocols"), | |
| 355 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 356 ngx_conf_set_bitmask_slot, | |
| 357 NGX_HTTP_LOC_CONF_OFFSET, | |
| 358 offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols), | |
| 359 &ngx_http_grpc_ssl_protocols }, | |
| 360 | |
| 361 { ngx_string("grpc_ssl_ciphers"), | |
| 362 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 363 ngx_conf_set_str_slot, | |
| 364 NGX_HTTP_LOC_CONF_OFFSET, | |
| 365 offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers), | |
| 366 NULL }, | |
| 367 | |
| 368 { ngx_string("grpc_ssl_name"), | |
| 369 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 370 ngx_http_set_complex_value_slot, | |
| 371 NGX_HTTP_LOC_CONF_OFFSET, | |
| 372 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name), | |
| 373 NULL }, | |
| 374 | |
| 375 { ngx_string("grpc_ssl_server_name"), | |
| 376 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 377 ngx_conf_set_flag_slot, | |
| 378 NGX_HTTP_LOC_CONF_OFFSET, | |
| 379 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name), | |
| 380 NULL }, | |
| 381 | |
| 382 { ngx_string("grpc_ssl_verify"), | |
| 383 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 384 ngx_conf_set_flag_slot, | |
| 385 NGX_HTTP_LOC_CONF_OFFSET, | |
| 386 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify), | |
| 387 NULL }, | |
| 388 | |
| 389 { ngx_string("grpc_ssl_verify_depth"), | |
| 390 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 391 ngx_conf_set_num_slot, | |
| 392 NGX_HTTP_LOC_CONF_OFFSET, | |
| 393 offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth), | |
| 394 NULL }, | |
| 395 | |
| 396 { ngx_string("grpc_ssl_trusted_certificate"), | |
| 397 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 398 ngx_conf_set_str_slot, | |
| 399 NGX_HTTP_LOC_CONF_OFFSET, | |
| 400 offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate), | |
| 401 NULL }, | |
| 402 | |
| 403 { ngx_string("grpc_ssl_crl"), | |
| 404 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 405 ngx_conf_set_str_slot, | |
| 406 NGX_HTTP_LOC_CONF_OFFSET, | |
| 407 offsetof(ngx_http_grpc_loc_conf_t, ssl_crl), | |
| 408 NULL }, | |
| 409 | |
| 410 { ngx_string("grpc_ssl_certificate"), | |
| 411 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 412 ngx_conf_set_str_slot, | |
| 413 NGX_HTTP_LOC_CONF_OFFSET, | |
| 414 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate), | |
| 415 NULL }, | |
| 416 | |
| 417 { ngx_string("grpc_ssl_certificate_key"), | |
| 418 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 419 ngx_conf_set_str_slot, | |
| 420 NGX_HTTP_LOC_CONF_OFFSET, | |
| 421 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate_key), | |
| 422 NULL }, | |
| 423 | |
| 424 { ngx_string("grpc_ssl_password_file"), | |
| 425 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 426 ngx_http_grpc_ssl_password_file, | |
| 427 NGX_HTTP_LOC_CONF_OFFSET, | |
| 428 0, | |
| 429 NULL }, | |
| 430 | |
| 431 #endif | |
| 432 | |
| 433 ngx_null_command | |
| 434 }; | |
| 435 | |
| 436 | |
| 437 static ngx_http_module_t ngx_http_grpc_module_ctx = { | |
|
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438 ngx_http_grpc_add_variables, /* preconfiguration */ |
| 7233 | 439 NULL, /* postconfiguration */ |
| 440 | |
| 441 NULL, /* create main configuration */ | |
| 442 NULL, /* init main configuration */ | |
| 443 | |
| 444 NULL, /* create server configuration */ | |
| 445 NULL, /* merge server configuration */ | |
| 446 | |
| 447 ngx_http_grpc_create_loc_conf, /* create location configuration */ | |
| 448 ngx_http_grpc_merge_loc_conf /* merge location configuration */ | |
| 449 }; | |
| 450 | |
| 451 | |
| 452 ngx_module_t ngx_http_grpc_module = { | |
| 453 NGX_MODULE_V1, | |
| 454 &ngx_http_grpc_module_ctx, /* module context */ | |
| 455 ngx_http_grpc_commands, /* module directives */ | |
| 456 NGX_HTTP_MODULE, /* module type */ | |
| 457 NULL, /* init master */ | |
| 458 NULL, /* init module */ | |
| 459 NULL, /* init process */ | |
| 460 NULL, /* init thread */ | |
| 461 NULL, /* exit thread */ | |
| 462 NULL, /* exit process */ | |
| 463 NULL, /* exit master */ | |
| 464 NGX_MODULE_V1_PADDING | |
| 465 }; | |
| 466 | |
| 467 | |
| 468 static u_char ngx_http_grpc_connection_start[] = | |
| 469 "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* connection preface */ | |
| 470 | |
| 471 "\x00\x00\x12\x04\x00\x00\x00\x00\x00" /* settings frame */ | |
| 472 "\x00\x01\x00\x00\x00\x00" /* header table size */ | |
| 473 "\x00\x02\x00\x00\x00\x00" /* disable push */ | |
| 474 "\x00\x04\x7f\xff\xff\xff" /* initial window */ | |
| 475 | |
| 476 "\x00\x00\x04\x08\x00\x00\x00\x00\x00" /* window update frame */ | |
| 477 "\x7f\xff\x00\x00"; | |
| 478 | |
| 479 | |
| 480 static ngx_keyval_t ngx_http_grpc_headers[] = { | |
| 481 { ngx_string("Content-Length"), ngx_string("$content_length") }, | |
|
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482 { ngx_string("TE"), ngx_string("$grpc_internal_trailers") }, |
| 7233 | 483 { ngx_string("Host"), ngx_string("") }, |
| 484 { ngx_string("Connection"), ngx_string("") }, | |
| 485 { ngx_string("Transfer-Encoding"), ngx_string("") }, | |
| 486 { ngx_string("Keep-Alive"), ngx_string("") }, | |
| 487 { ngx_string("Expect"), ngx_string("") }, | |
| 488 { ngx_string("Upgrade"), ngx_string("") }, | |
| 489 { ngx_null_string, ngx_null_string } | |
| 490 }; | |
| 491 | |
| 492 | |
| 493 static ngx_str_t ngx_http_grpc_hide_headers[] = { | |
| 494 ngx_string("Date"), | |
| 495 ngx_string("Server"), | |
| 496 ngx_string("X-Accel-Expires"), | |
| 497 ngx_string("X-Accel-Redirect"), | |
| 498 ngx_string("X-Accel-Limit-Rate"), | |
| 499 ngx_string("X-Accel-Buffering"), | |
| 500 ngx_string("X-Accel-Charset"), | |
| 501 ngx_null_string | |
| 502 }; | |
| 503 | |
| 504 | |
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505 static ngx_http_variable_t ngx_http_grpc_vars[] = { |
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506 |
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507 { ngx_string("grpc_internal_trailers"), NULL, |
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508 ngx_http_grpc_internal_trailers_variable, 0, |
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509 NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
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510 |
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511 ngx_http_null_variable |
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512 }; |
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513 |
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514 |
| 7233 | 515 static ngx_int_t |
| 516 ngx_http_grpc_handler(ngx_http_request_t *r) | |
| 517 { | |
| 518 ngx_int_t rc; | |
| 519 ngx_http_upstream_t *u; | |
| 520 ngx_http_grpc_ctx_t *ctx; | |
| 521 ngx_http_grpc_loc_conf_t *glcf; | |
| 522 | |
| 523 if (ngx_http_upstream_create(r) != NGX_OK) { | |
| 524 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 525 } | |
| 526 | |
| 527 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
| 528 | |
| 529 u = r->upstream; | |
| 530 | |
| 531 #if (NGX_HTTP_SSL) | |
| 532 u->ssl = (glcf->upstream.ssl != NULL); | |
| 533 | |
| 534 if (u->ssl) { | |
| 535 ngx_str_set(&u->schema, "grpcs://"); | |
| 536 | |
| 537 } else { | |
| 538 ngx_str_set(&u->schema, "grpc://"); | |
| 539 } | |
| 540 #else | |
| 541 ngx_str_set(&u->schema, "grpc://"); | |
| 542 #endif | |
| 543 | |
| 544 u->output.tag = (ngx_buf_tag_t) &ngx_http_grpc_module; | |
| 545 | |
| 546 u->conf = &glcf->upstream; | |
| 547 | |
| 548 u->create_request = ngx_http_grpc_create_request; | |
| 549 u->reinit_request = ngx_http_grpc_reinit_request; | |
| 550 u->process_header = ngx_http_grpc_process_header; | |
| 551 u->abort_request = ngx_http_grpc_abort_request; | |
| 552 u->finalize_request = ngx_http_grpc_finalize_request; | |
| 553 | |
| 554 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_grpc_ctx_t)); | |
| 555 if (ctx == NULL) { | |
| 556 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 557 } | |
| 558 | |
| 559 ctx->request = r; | |
| 560 | |
| 561 ngx_http_set_ctx(r, ctx, ngx_http_grpc_module); | |
| 562 | |
| 563 u->input_filter_init = ngx_http_grpc_filter_init; | |
| 564 u->input_filter = ngx_http_grpc_filter; | |
| 565 u->input_filter_ctx = ctx; | |
| 566 | |
| 567 r->request_body_no_buffering = 1; | |
| 568 | |
| 569 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init); | |
| 570 | |
| 571 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { | |
| 572 return rc; | |
| 573 } | |
| 574 | |
| 575 return NGX_DONE; | |
| 576 } | |
| 577 | |
| 578 | |
| 579 static ngx_int_t | |
| 580 ngx_http_grpc_create_request(ngx_http_request_t *r) | |
| 581 { | |
| 582 u_char *p, *tmp, *key_tmp, *val_tmp, *headers_frame; | |
| 583 size_t len, tmp_len, key_len, val_len, uri_len; | |
| 584 uintptr_t escape; | |
| 585 ngx_buf_t *b; | |
| 586 ngx_uint_t i, next; | |
| 587 ngx_chain_t *cl, *body; | |
| 588 ngx_list_part_t *part; | |
| 589 ngx_table_elt_t *header; | |
| 590 ngx_http_upstream_t *u; | |
| 591 ngx_http_grpc_frame_t *f; | |
| 592 ngx_http_script_code_pt code; | |
| 593 ngx_http_grpc_loc_conf_t *glcf; | |
| 594 ngx_http_script_engine_t e, le; | |
| 595 ngx_http_script_len_code_pt lcode; | |
| 596 | |
| 597 u = r->upstream; | |
| 598 | |
| 599 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
| 600 | |
| 601 len = sizeof(ngx_http_grpc_connection_start) - 1 | |
| 602 + sizeof(ngx_http_grpc_frame_t); /* headers frame */ | |
| 603 | |
| 604 /* :method header */ | |
| 605 | |
| 606 if (r->method == NGX_HTTP_GET || r->method == NGX_HTTP_POST) { | |
| 607 len += 1; | |
| 608 tmp_len = 0; | |
| 609 | |
| 610 } else { | |
| 611 len += 1 + NGX_HTTP_V2_INT_OCTETS + r->method_name.len; | |
| 612 tmp_len = r->method_name.len; | |
| 613 } | |
| 614 | |
| 615 /* :scheme header */ | |
| 616 | |
| 617 len += 1; | |
| 618 | |
| 619 /* :path header */ | |
| 620 | |
| 621 if (r->valid_unparsed_uri) { | |
| 622 escape = 0; | |
| 623 uri_len = r->unparsed_uri.len; | |
| 624 | |
| 625 } else { | |
| 626 escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
| 627 NGX_ESCAPE_URI); | |
| 628 uri_len = r->uri.len + escape + sizeof("?") - 1 + r->args.len; | |
| 629 } | |
| 630 | |
| 631 len += 1 + NGX_HTTP_V2_INT_OCTETS + uri_len; | |
| 632 | |
| 633 if (tmp_len < uri_len) { | |
| 634 tmp_len = uri_len; | |
| 635 } | |
| 636 | |
| 637 /* :authority header */ | |
| 638 | |
| 639 if (!glcf->host_set) { | |
| 640 len += 1 + NGX_HTTP_V2_INT_OCTETS + glcf->host.len; | |
| 641 | |
| 642 if (tmp_len < glcf->host.len) { | |
| 643 tmp_len = glcf->host.len; | |
| 644 } | |
| 645 } | |
| 646 | |
| 647 /* other headers */ | |
| 648 | |
| 649 ngx_http_script_flush_no_cacheable_variables(r, glcf->headers.flushes); | |
| 650 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
| 651 | |
| 652 le.ip = glcf->headers.lengths->elts; | |
| 653 le.request = r; | |
| 654 le.flushed = 1; | |
| 655 | |
| 656 while (*(uintptr_t *) le.ip) { | |
| 657 | |
| 658 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 659 key_len = lcode(&le); | |
| 660 | |
| 661 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
| 662 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 663 } | |
| 664 le.ip += sizeof(uintptr_t); | |
| 665 | |
| 666 if (val_len == 0) { | |
| 667 continue; | |
| 668 } | |
| 669 | |
| 670 len += 1 + NGX_HTTP_V2_INT_OCTETS + key_len | |
| 671 + NGX_HTTP_V2_INT_OCTETS + val_len; | |
| 672 | |
| 673 if (tmp_len < key_len) { | |
| 674 tmp_len = key_len; | |
| 675 } | |
| 676 | |
| 677 if (tmp_len < val_len) { | |
| 678 tmp_len = val_len; | |
| 679 } | |
| 680 } | |
| 681 | |
| 682 if (glcf->upstream.pass_request_headers) { | |
| 683 part = &r->headers_in.headers.part; | |
| 684 header = part->elts; | |
| 685 | |
| 686 for (i = 0; /* void */; i++) { | |
| 687 | |
| 688 if (i >= part->nelts) { | |
| 689 if (part->next == NULL) { | |
| 690 break; | |
| 691 } | |
| 692 | |
| 693 part = part->next; | |
| 694 header = part->elts; | |
| 695 i = 0; | |
| 696 } | |
| 697 | |
| 698 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
| 699 header[i].lowcase_key, header[i].key.len)) | |
| 700 { | |
| 701 continue; | |
| 702 } | |
| 703 | |
| 704 len += 1 + NGX_HTTP_V2_INT_OCTETS + header[i].key.len | |
| 705 + NGX_HTTP_V2_INT_OCTETS + header[i].value.len; | |
| 706 | |
| 707 if (tmp_len < header[i].key.len) { | |
| 708 tmp_len = header[i].key.len; | |
| 709 } | |
| 710 | |
| 711 if (tmp_len < header[i].value.len) { | |
| 712 tmp_len = header[i].value.len; | |
| 713 } | |
| 714 } | |
| 715 } | |
| 716 | |
| 717 /* continuation frames */ | |
| 718 | |
| 719 len += sizeof(ngx_http_grpc_frame_t) | |
| 720 * (len / NGX_HTTP_V2_DEFAULT_FRAME_SIZE); | |
| 721 | |
| 722 | |
| 723 b = ngx_create_temp_buf(r->pool, len); | |
| 724 if (b == NULL) { | |
| 725 return NGX_ERROR; | |
| 726 } | |
| 727 | |
| 728 cl = ngx_alloc_chain_link(r->pool); | |
| 729 if (cl == NULL) { | |
| 730 return NGX_ERROR; | |
| 731 } | |
| 732 | |
| 733 cl->buf = b; | |
| 734 cl->next = NULL; | |
| 735 | |
| 736 tmp = ngx_palloc(r->pool, tmp_len * 3); | |
| 737 if (tmp == NULL) { | |
| 738 return NGX_ERROR; | |
| 739 } | |
| 740 | |
| 741 key_tmp = tmp + tmp_len; | |
| 742 val_tmp = tmp + 2 * tmp_len; | |
| 743 | |
| 744 /* connection preface */ | |
| 745 | |
| 746 b->last = ngx_copy(b->last, ngx_http_grpc_connection_start, | |
| 747 sizeof(ngx_http_grpc_connection_start) - 1); | |
| 748 | |
| 749 /* headers frame */ | |
| 750 | |
| 751 headers_frame = b->last; | |
| 752 | |
| 753 f = (ngx_http_grpc_frame_t *) b->last; | |
| 754 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 755 | |
| 756 f->length_0 = 0; | |
| 757 f->length_1 = 0; | |
| 758 f->length_2 = 0; | |
| 759 f->type = NGX_HTTP_V2_HEADERS_FRAME; | |
| 760 f->flags = 0; | |
| 761 f->stream_id_0 = 0; | |
| 762 f->stream_id_1 = 0; | |
| 763 f->stream_id_2 = 0; | |
| 764 f->stream_id_3 = 1; | |
| 765 | |
| 766 if (r->method == NGX_HTTP_GET) { | |
| 767 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_GET_INDEX); | |
| 768 | |
| 769 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 770 "grpc header: \":method: GET\""); | |
| 771 | |
| 772 } else if (r->method == NGX_HTTP_POST) { | |
| 773 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_POST_INDEX); | |
| 774 | |
| 775 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 776 "grpc header: \":method: POST\""); | |
| 777 | |
| 778 } else { | |
| 779 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_METHOD_INDEX); | |
| 780 b->last = ngx_http_v2_write_value(b->last, r->method_name.data, | |
| 781 r->method_name.len, tmp); | |
| 782 | |
| 783 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 784 "grpc header: \":method: %V\"", &r->method_name); | |
| 785 } | |
| 786 | |
| 787 #if (NGX_HTTP_SSL) | |
| 788 if (glcf->ssl) { | |
| 789 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTPS_INDEX); | |
| 790 | |
| 791 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 792 "grpc header: \":scheme: https\""); | |
| 793 } else | |
| 794 #endif | |
| 795 { | |
| 796 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTP_INDEX); | |
| 797 | |
| 798 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 799 "grpc header: \":scheme: http\""); | |
| 800 } | |
| 801 | |
| 802 if (r->valid_unparsed_uri) { | |
| 803 | |
| 804 if (r->unparsed_uri.len == 1 && r->unparsed_uri.data[0] == '/') { | |
| 805 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_PATH_ROOT_INDEX); | |
| 806 | |
| 807 } else { | |
| 808 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 809 b->last = ngx_http_v2_write_value(b->last, r->unparsed_uri.data, | |
| 810 r->unparsed_uri.len, tmp); | |
| 811 } | |
| 812 | |
| 813 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 814 "grpc header: \":path: %V\"", &r->unparsed_uri); | |
| 815 | |
| 816 } else if (escape || r->args.len > 0) { | |
| 817 p = val_tmp; | |
| 818 | |
| 819 if (escape) { | |
| 820 p = (u_char *) ngx_escape_uri(p, r->uri.data, r->uri.len, | |
| 821 NGX_ESCAPE_URI); | |
| 822 | |
| 823 } else { | |
| 824 p = ngx_copy(p, r->uri.data, r->uri.len); | |
| 825 } | |
| 826 | |
| 827 if (r->args.len > 0) { | |
| 828 *p++ = '?'; | |
| 829 p = ngx_copy(p, r->args.data, r->args.len); | |
| 830 } | |
| 831 | |
| 832 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 833 b->last = ngx_http_v2_write_value(b->last, val_tmp, p - val_tmp, tmp); | |
| 834 | |
| 835 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 836 "grpc header: \":path: %*s\"", p - val_tmp, val_tmp); | |
| 837 | |
| 838 } else { | |
| 839 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 840 b->last = ngx_http_v2_write_value(b->last, r->uri.data, | |
| 841 r->uri.len, tmp); | |
| 842 | |
| 843 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 844 "grpc header: \":path: %V\"", &r->uri); | |
| 845 } | |
| 846 | |
| 847 if (!glcf->host_set) { | |
| 848 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_AUTHORITY_INDEX); | |
| 849 b->last = ngx_http_v2_write_value(b->last, glcf->host.data, | |
| 850 glcf->host.len, tmp); | |
| 851 | |
| 852 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 853 "grpc header: \":authority: %V\"", &glcf->host); | |
| 854 } | |
| 855 | |
| 856 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
| 857 | |
| 858 e.ip = glcf->headers.values->elts; | |
| 859 e.request = r; | |
| 860 e.flushed = 1; | |
| 861 | |
| 862 le.ip = glcf->headers.lengths->elts; | |
| 863 | |
| 864 while (*(uintptr_t *) le.ip) { | |
| 865 | |
| 866 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 867 key_len = lcode(&le); | |
| 868 | |
| 869 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
| 870 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 871 } | |
| 872 le.ip += sizeof(uintptr_t); | |
| 873 | |
| 874 if (val_len == 0) { | |
| 875 e.skip = 1; | |
| 876 | |
| 877 while (*(uintptr_t *) e.ip) { | |
| 878 code = *(ngx_http_script_code_pt *) e.ip; | |
| 879 code((ngx_http_script_engine_t *) &e); | |
| 880 } | |
| 881 e.ip += sizeof(uintptr_t); | |
| 882 | |
| 883 e.skip = 0; | |
| 884 | |
| 885 continue; | |
| 886 } | |
| 887 | |
| 888 *b->last++ = 0; | |
| 889 | |
| 890 e.pos = key_tmp; | |
| 891 | |
| 892 code = *(ngx_http_script_code_pt *) e.ip; | |
| 893 code((ngx_http_script_engine_t *) &e); | |
| 894 | |
| 895 b->last = ngx_http_v2_write_name(b->last, key_tmp, key_len, tmp); | |
| 896 | |
| 897 e.pos = val_tmp; | |
| 898 | |
| 899 while (*(uintptr_t *) e.ip) { | |
| 900 code = *(ngx_http_script_code_pt *) e.ip; | |
| 901 code((ngx_http_script_engine_t *) &e); | |
| 902 } | |
| 903 e.ip += sizeof(uintptr_t); | |
| 904 | |
| 905 b->last = ngx_http_v2_write_value(b->last, val_tmp, val_len, tmp); | |
| 906 | |
| 907 #if (NGX_DEBUG) | |
| 908 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 909 ngx_strlow(key_tmp, key_tmp, key_len); | |
| 910 | |
| 911 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 912 "grpc header: \"%*s: %*s\"", | |
| 913 key_len, key_tmp, val_len, val_tmp); | |
| 914 } | |
| 915 #endif | |
| 916 } | |
| 917 | |
| 918 if (glcf->upstream.pass_request_headers) { | |
| 919 part = &r->headers_in.headers.part; | |
| 920 header = part->elts; | |
| 921 | |
| 922 for (i = 0; /* void */; i++) { | |
| 923 | |
| 924 if (i >= part->nelts) { | |
| 925 if (part->next == NULL) { | |
| 926 break; | |
| 927 } | |
| 928 | |
| 929 part = part->next; | |
| 930 header = part->elts; | |
| 931 i = 0; | |
| 932 } | |
| 933 | |
| 934 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
| 935 header[i].lowcase_key, header[i].key.len)) | |
| 936 { | |
| 937 continue; | |
| 938 } | |
| 939 | |
| 940 *b->last++ = 0; | |
| 941 | |
| 942 b->last = ngx_http_v2_write_name(b->last, header[i].key.data, | |
| 943 header[i].key.len, tmp); | |
| 944 | |
| 945 b->last = ngx_http_v2_write_value(b->last, header[i].value.data, | |
| 946 header[i].value.len, tmp); | |
| 947 | |
| 948 #if (NGX_DEBUG) | |
| 949 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 950 ngx_strlow(tmp, header[i].key.data, header[i].key.len); | |
| 951 | |
| 952 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 953 "grpc header: \"%*s: %V\"", | |
| 954 header[i].key.len, tmp, &header[i].value); | |
| 955 } | |
| 956 #endif | |
| 957 } | |
| 958 } | |
| 959 | |
| 960 /* update headers frame length */ | |
| 961 | |
| 962 len = b->last - headers_frame - sizeof(ngx_http_grpc_frame_t); | |
| 963 | |
| 964 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 965 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 966 next = 1; | |
| 967 | |
| 968 } else { | |
| 969 next = 0; | |
| 970 } | |
| 971 | |
| 972 f = (ngx_http_grpc_frame_t *) headers_frame; | |
| 973 | |
| 974 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 975 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 976 f->length_2 = (u_char) (len & 0xff); | |
| 977 | |
| 978 /* create additional continuation frames */ | |
| 979 | |
| 980 p = headers_frame; | |
| 981 | |
| 982 while (next) { | |
| 983 p += sizeof(ngx_http_grpc_frame_t) + NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 984 len = b->last - p; | |
| 985 | |
| 986 ngx_memmove(p + sizeof(ngx_http_grpc_frame_t), p, len); | |
| 987 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 988 | |
| 989 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 990 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 991 next = 1; | |
| 992 | |
| 993 } else { | |
| 994 next = 0; | |
| 995 } | |
| 996 | |
| 997 f = (ngx_http_grpc_frame_t *) p; | |
| 998 | |
| 999 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 1000 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 1001 f->length_2 = (u_char) (len & 0xff); | |
| 1002 f->type = NGX_HTTP_V2_CONTINUATION_FRAME; | |
| 1003 f->flags = 0; | |
| 1004 f->stream_id_0 = 0; | |
| 1005 f->stream_id_1 = 0; | |
| 1006 f->stream_id_2 = 0; | |
| 1007 f->stream_id_3 = 1; | |
| 1008 } | |
| 1009 | |
| 1010 f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG; | |
| 1011 | |
| 1012 #if (NGX_DEBUG) | |
| 1013 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 1014 u_char buf[512]; | |
| 1015 size_t n, m; | |
| 1016 | |
| 1017 n = ngx_min(b->last - b->pos, 256); | |
| 1018 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
| 1019 | |
| 1020 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1021 "grpc header: %*s%s, len: %uz", | |
| 1022 m, buf, b->last - b->pos > 256 ? "..." : "", | |
| 1023 b->last - b->pos); | |
| 1024 } | |
| 1025 #endif | |
| 1026 | |
| 1027 if (r->request_body_no_buffering) { | |
| 1028 | |
| 1029 u->request_bufs = cl; | |
| 1030 | |
| 1031 } else { | |
| 1032 | |
| 1033 body = u->request_bufs; | |
| 1034 u->request_bufs = cl; | |
| 1035 | |
| 1036 if (body == NULL) { | |
| 1037 f = (ngx_http_grpc_frame_t *) headers_frame; | |
| 1038 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1039 } | |
| 1040 | |
| 1041 while (body) { | |
| 1042 b = ngx_alloc_buf(r->pool); | |
| 1043 if (b == NULL) { | |
| 1044 return NGX_ERROR; | |
| 1045 } | |
| 1046 | |
| 1047 ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); | |
| 1048 | |
| 1049 cl->next = ngx_alloc_chain_link(r->pool); | |
| 1050 if (cl->next == NULL) { | |
| 1051 return NGX_ERROR; | |
| 1052 } | |
| 1053 | |
| 1054 cl = cl->next; | |
| 1055 cl->buf = b; | |
| 1056 | |
| 1057 body = body->next; | |
| 1058 } | |
| 1059 | |
| 1060 b->last_buf = 1; | |
| 1061 } | |
| 1062 | |
| 1063 u->output.output_filter = ngx_http_grpc_body_output_filter; | |
| 1064 u->output.filter_ctx = r; | |
| 1065 | |
| 1066 b->flush = 1; | |
| 1067 cl->next = NULL; | |
| 1068 | |
| 1069 return NGX_OK; | |
| 1070 } | |
| 1071 | |
| 1072 | |
| 1073 static ngx_int_t | |
| 1074 ngx_http_grpc_reinit_request(ngx_http_request_t *r) | |
| 1075 { | |
| 1076 ngx_http_grpc_ctx_t *ctx; | |
| 1077 | |
| 1078 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
| 1079 | |
| 1080 if (ctx == NULL) { | |
| 1081 return NGX_OK; | |
| 1082 } | |
| 1083 | |
| 1084 ctx->state = 0; | |
| 1085 ctx->header_sent = 0; | |
| 1086 ctx->output_closed = 0; | |
|
7350
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1087 ctx->output_blocked = 0; |
| 7233 | 1088 ctx->parsing_headers = 0; |
| 1089 ctx->end_stream = 0; | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1090 ctx->done = 0; |
| 7233 | 1091 ctx->status = 0; |
| 1092 ctx->connection = NULL; | |
| 1093 | |
| 1094 return NGX_OK; | |
| 1095 } | |
| 1096 | |
| 1097 | |
| 1098 static ngx_int_t | |
| 1099 ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in) | |
| 1100 { | |
| 1101 ngx_http_request_t *r = data; | |
| 1102 | |
| 1103 off_t file_pos; | |
| 1104 u_char *p, *pos, *start; | |
| 1105 size_t len, limit; | |
| 1106 ngx_buf_t *b; | |
| 1107 ngx_int_t rc; | |
| 1108 ngx_uint_t next, last; | |
| 1109 ngx_chain_t *cl, *out, **ll; | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1110 ngx_http_upstream_t *u; |
| 7233 | 1111 ngx_http_grpc_ctx_t *ctx; |
| 1112 ngx_http_grpc_frame_t *f; | |
| 1113 | |
| 1114 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1115 "grpc output filter"); | |
| 1116 | |
| 1117 ctx = ngx_http_grpc_get_ctx(r); | |
| 1118 | |
| 1119 if (ctx == NULL) { | |
| 1120 return NGX_ERROR; | |
| 1121 } | |
| 1122 | |
| 1123 if (in) { | |
| 1124 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { | |
| 1125 return NGX_ERROR; | |
| 1126 } | |
| 1127 } | |
| 1128 | |
| 1129 out = NULL; | |
| 1130 ll = &out; | |
| 1131 | |
| 1132 if (!ctx->header_sent) { | |
| 1133 /* first buffer contains headers */ | |
| 1134 | |
| 1135 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1136 "grpc output header"); | |
| 1137 | |
| 1138 ctx->header_sent = 1; | |
| 1139 | |
| 1140 if (ctx->id != 1) { | |
| 1141 /* | |
| 1142 * keepalive connection: skip connection preface, | |
| 1143 * update stream identifiers | |
| 1144 */ | |
| 1145 | |
| 1146 b = ctx->in->buf; | |
| 1147 b->pos += sizeof(ngx_http_grpc_connection_start) - 1; | |
| 1148 | |
| 1149 p = b->pos; | |
| 1150 | |
| 1151 while (p < b->last) { | |
| 1152 f = (ngx_http_grpc_frame_t *) p; | |
| 1153 p += sizeof(ngx_http_grpc_frame_t); | |
| 1154 | |
| 1155 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1156 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1157 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1158 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1159 | |
| 1160 p += (f->length_0 << 16) + (f->length_1 << 8) + f->length_2; | |
| 1161 } | |
| 1162 } | |
| 1163 | |
| 1164 if (ctx->in->buf->last_buf) { | |
| 1165 ctx->output_closed = 1; | |
| 1166 } | |
| 1167 | |
| 1168 *ll = ctx->in; | |
| 1169 ll = &ctx->in->next; | |
| 1170 | |
| 1171 ctx->in = ctx->in->next; | |
| 1172 } | |
| 1173 | |
| 1174 if (ctx->out) { | |
| 1175 /* queued control frames */ | |
| 1176 | |
| 1177 *ll = ctx->out; | |
| 1178 | |
| 1179 for (cl = ctx->out, ll = &cl->next; cl; cl = cl->next) { | |
| 1180 ll = &cl->next; | |
| 1181 } | |
| 1182 | |
| 1183 ctx->out = NULL; | |
| 1184 } | |
| 1185 | |
| 1186 f = NULL; | |
| 1187 last = 0; | |
| 1188 | |
| 1189 limit = ngx_max(0, ctx->send_window); | |
| 1190 | |
| 1191 if (limit > ctx->connection->send_window) { | |
| 1192 limit = ctx->connection->send_window; | |
| 1193 } | |
| 1194 | |
| 1195 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1196 "grpc output limit: %uz w:%z:%uz", | |
| 1197 limit, ctx->send_window, ctx->connection->send_window); | |
| 1198 | |
| 1199 #if (NGX_SUPPRESS_WARN) | |
| 1200 file_pos = 0; | |
| 1201 pos = NULL; | |
| 1202 cl = NULL; | |
| 1203 #endif | |
| 1204 | |
| 1205 in = ctx->in; | |
| 1206 | |
| 1207 while (in && limit > 0) { | |
| 1208 | |
| 1209 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
| 1210 "grpc output in l:%d f:%d %p, pos %p, size: %z " | |
| 1211 "file: %O, size: %O", | |
| 1212 in->buf->last_buf, | |
| 1213 in->buf->in_file, | |
| 1214 in->buf->start, in->buf->pos, | |
| 1215 in->buf->last - in->buf->pos, | |
| 1216 in->buf->file_pos, | |
| 1217 in->buf->file_last - in->buf->file_pos); | |
| 1218 | |
| 1219 if (ngx_buf_special(in->buf)) { | |
| 1220 goto next; | |
| 1221 } | |
| 1222 | |
| 1223 if (in->buf->in_file) { | |
| 1224 file_pos = in->buf->file_pos; | |
| 1225 | |
| 1226 } else { | |
| 1227 pos = in->buf->pos; | |
| 1228 } | |
| 1229 | |
| 1230 next = 0; | |
| 1231 | |
| 1232 do { | |
| 1233 | |
| 1234 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 1235 if (cl == NULL) { | |
| 1236 return NGX_ERROR; | |
| 1237 } | |
| 1238 | |
| 1239 b = cl->buf; | |
| 1240 | |
| 1241 f = (ngx_http_grpc_frame_t *) b->last; | |
| 1242 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 1243 | |
| 1244 *ll = cl; | |
| 1245 ll = &cl->next; | |
| 1246 | |
| 1247 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
| 1248 if (cl == NULL) { | |
| 1249 return NGX_ERROR; | |
| 1250 } | |
| 1251 | |
| 1252 b = cl->buf; | |
| 1253 start = b->start; | |
| 1254 | |
| 1255 ngx_memcpy(b, in->buf, sizeof(ngx_buf_t)); | |
| 1256 | |
| 1257 /* | |
| 1258 * restore b->start to preserve memory allocated in the buffer, | |
| 1259 * to reuse it later for headers and control frames | |
| 1260 */ | |
| 1261 | |
| 1262 b->start = start; | |
| 1263 | |
| 1264 if (in->buf->in_file) { | |
| 1265 b->file_pos = file_pos; | |
| 1266 file_pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
| 1267 | |
| 1268 if (file_pos >= in->buf->file_last) { | |
| 1269 file_pos = in->buf->file_last; | |
| 1270 next = 1; | |
| 1271 } | |
| 1272 | |
| 1273 b->file_last = file_pos; | |
| 1274 len = (ngx_uint_t) (file_pos - b->file_pos); | |
| 1275 | |
| 1276 } else { | |
| 1277 b->pos = pos; | |
| 1278 pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
| 1279 | |
| 1280 if (pos >= in->buf->last) { | |
| 1281 pos = in->buf->last; | |
| 1282 next = 1; | |
| 1283 } | |
| 1284 | |
| 1285 b->last = pos; | |
| 1286 len = (ngx_uint_t) (pos - b->pos); | |
| 1287 } | |
| 1288 | |
| 1289 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
| 1290 b->shadow = in->buf; | |
| 1291 b->last_shadow = next; | |
| 1292 | |
| 1293 b->last_buf = 0; | |
| 1294 b->last_in_chain = 0; | |
| 1295 | |
| 1296 *ll = cl; | |
| 1297 ll = &cl->next; | |
| 1298 | |
| 1299 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 1300 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 1301 f->length_2 = (u_char) (len & 0xff); | |
| 1302 f->type = NGX_HTTP_V2_DATA_FRAME; | |
| 1303 f->flags = 0; | |
| 1304 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1305 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1306 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1307 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1308 | |
| 1309 limit -= len; | |
| 1310 ctx->send_window -= len; | |
| 1311 ctx->connection->send_window -= len; | |
| 1312 | |
| 1313 } while (!next && limit > 0); | |
| 1314 | |
| 1315 if (!next) { | |
| 1316 /* | |
| 1317 * if the buffer wasn't fully sent due to flow control limits, | |
| 1318 * preserve position for future use | |
| 1319 */ | |
| 1320 | |
| 1321 if (in->buf->in_file) { | |
| 1322 in->buf->file_pos = file_pos; | |
| 1323 | |
| 1324 } else { | |
| 1325 in->buf->pos = pos; | |
| 1326 } | |
| 1327 | |
| 1328 break; | |
| 1329 } | |
| 1330 | |
| 1331 next: | |
| 1332 | |
| 1333 if (in->buf->last_buf) { | |
| 1334 last = 1; | |
| 1335 } | |
| 1336 | |
| 1337 in = in->next; | |
| 1338 } | |
| 1339 | |
| 1340 ctx->in = in; | |
| 1341 | |
| 1342 if (last) { | |
| 1343 | |
| 1344 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1345 "grpc output last"); | |
| 1346 | |
| 1347 ctx->output_closed = 1; | |
| 1348 | |
| 1349 if (f) { | |
| 1350 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1351 | |
| 1352 } else { | |
| 1353 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 1354 if (cl == NULL) { | |
| 1355 return NGX_ERROR; | |
| 1356 } | |
| 1357 | |
| 1358 b = cl->buf; | |
| 1359 | |
| 1360 f = (ngx_http_grpc_frame_t *) b->last; | |
| 1361 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 1362 | |
| 1363 f->length_0 = 0; | |
| 1364 f->length_1 = 0; | |
| 1365 f->length_2 = 0; | |
| 1366 f->type = NGX_HTTP_V2_DATA_FRAME; | |
| 1367 f->flags = NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1368 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1369 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1370 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1371 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1372 | |
| 1373 *ll = cl; | |
| 1374 ll = &cl->next; | |
| 1375 } | |
| 1376 | |
| 1377 cl->buf->last_buf = 1; | |
| 1378 } | |
| 1379 | |
| 1380 *ll = NULL; | |
| 1381 | |
| 1382 #if (NGX_DEBUG) | |
| 1383 | |
| 1384 for (cl = out; cl; cl = cl->next) { | |
| 1385 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
| 1386 "grpc output out l:%d f:%d %p, pos %p, size: %z " | |
| 1387 "file: %O, size: %O", | |
| 1388 cl->buf->last_buf, | |
| 1389 cl->buf->in_file, | |
| 1390 cl->buf->start, cl->buf->pos, | |
| 1391 cl->buf->last - cl->buf->pos, | |
| 1392 cl->buf->file_pos, | |
| 1393 cl->buf->file_last - cl->buf->file_pos); | |
| 1394 } | |
| 1395 | |
| 1396 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1397 "grpc output limit: %uz w:%z:%uz", | |
| 1398 limit, ctx->send_window, ctx->connection->send_window); | |
| 1399 | |
| 1400 #endif | |
| 1401 | |
| 1402 rc = ngx_chain_writer(&r->upstream->writer, out); | |
| 1403 | |
| 1404 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, | |
| 1405 (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter); | |
| 1406 | |
| 1407 for (cl = ctx->free; cl; cl = cl->next) { | |
| 1408 | |
| 1409 /* mark original buffers as sent */ | |
| 1410 | |
| 1411 if (cl->buf->shadow) { | |
| 1412 if (cl->buf->last_shadow) { | |
| 1413 b = cl->buf->shadow; | |
| 1414 b->pos = b->last; | |
| 1415 } | |
| 1416 | |
| 1417 cl->buf->shadow = NULL; | |
| 1418 } | |
| 1419 } | |
| 1420 | |
| 1421 if (rc == NGX_OK && ctx->in) { | |
| 1422 rc = NGX_AGAIN; | |
| 1423 } | |
| 1424 | |
|
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1425 if (rc == NGX_AGAIN) { |
|
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1426 ctx->output_blocked = 1; |
|
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1427 |
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1428 } else { |
|
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1429 ctx->output_blocked = 0; |
|
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1430 } |
|
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1431 |
|
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1432 if (ctx->done) { |
|
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1433 |
|
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1434 /* |
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1435 * We have already got the response and were sending some additional |
|
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1436 * control frames. Even if there is still something unsent, stop |
|
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1437 * here anyway. |
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1438 */ |
|
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1439 |
|
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1440 u = r->upstream; |
|
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1441 u->length = 0; |
|
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1442 |
|
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1443 if (ctx->in == NULL |
|
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1444 && ctx->out == NULL |
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1445 && ctx->output_closed |
|
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1446 && !ctx->output_blocked |
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1447 && ctx->state == ngx_http_grpc_st_start) |
|
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1448 { |
|
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1449 u->keepalive = 1; |
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1450 } |
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1451 |
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1452 ngx_post_event(u->peer.connection->read, &ngx_posted_events); |
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1453 } |
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1454 |
| 7233 | 1455 return rc; |
| 1456 } | |
| 1457 | |
| 1458 | |
| 1459 static ngx_int_t | |
| 1460 ngx_http_grpc_process_header(ngx_http_request_t *r) | |
| 1461 { | |
| 1462 ngx_str_t *status_line; | |
| 1463 ngx_int_t rc, status; | |
| 1464 ngx_buf_t *b; | |
| 1465 ngx_table_elt_t *h; | |
| 1466 ngx_http_upstream_t *u; | |
| 1467 ngx_http_grpc_ctx_t *ctx; | |
| 1468 ngx_http_upstream_header_t *hh; | |
| 1469 ngx_http_upstream_main_conf_t *umcf; | |
| 1470 | |
| 1471 u = r->upstream; | |
| 1472 b = &u->buffer; | |
| 1473 | |
| 1474 #if (NGX_DEBUG) | |
| 1475 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 1476 u_char buf[512]; | |
| 1477 size_t n, m; | |
| 1478 | |
| 1479 n = ngx_min(b->last - b->pos, 256); | |
| 1480 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
| 1481 | |
| 1482 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1483 "grpc response: %*s%s, len: %uz", | |
| 1484 m, buf, b->last - b->pos > 256 ? "..." : "", | |
| 1485 b->last - b->pos); | |
| 1486 } | |
| 1487 #endif | |
| 1488 | |
| 1489 ctx = ngx_http_grpc_get_ctx(r); | |
| 1490 | |
| 1491 if (ctx == NULL) { | |
| 1492 return NGX_ERROR; | |
| 1493 } | |
| 1494 | |
| 1495 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); | |
| 1496 | |
| 1497 for ( ;; ) { | |
| 1498 | |
| 1499 if (ctx->state < ngx_http_grpc_st_payload) { | |
| 1500 | |
| 1501 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
| 1502 | |
| 1503 if (rc == NGX_AGAIN) { | |
| 1504 | |
| 1505 /* | |
| 1506 * there can be a lot of window update frames, | |
| 1507 * so we reset buffer if it is empty and we haven't | |
| 1508 * started parsing headers yet | |
| 1509 */ | |
| 1510 | |
| 1511 if (!ctx->parsing_headers) { | |
| 1512 b->pos = b->start; | |
| 1513 b->last = b->pos; | |
| 1514 } | |
| 1515 | |
| 1516 return NGX_AGAIN; | |
| 1517 } | |
| 1518 | |
| 1519 if (rc == NGX_ERROR) { | |
| 1520 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1521 } | |
| 1522 | |
| 1523 /* | |
| 1524 * RFC 7540 says that implementations MUST discard frames | |
| 1525 * that have unknown or unsupported types. However, extension | |
| 1526 * frames that appear in the middle of a header block are | |
| 1527 * not permitted. Also, for obvious reasons CONTINUATION frames | |
| 1528 * cannot appear before headers, and DATA frames are not expected | |
| 1529 * to appear before all headers are parsed. | |
| 1530 */ | |
| 1531 | |
| 1532 if (ctx->type == NGX_HTTP_V2_DATA_FRAME | |
| 1533 || (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1534 && !ctx->parsing_headers) | |
| 1535 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1536 && ctx->parsing_headers)) | |
| 1537 { | |
| 1538 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1539 "upstream sent unexpected http2 frame: %d", | |
| 1540 ctx->type); | |
| 1541 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1542 } | |
| 1543 | |
| 1544 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
| 1545 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1546 "upstream sent frame for unknown stream %ui", | |
| 1547 ctx->stream_id); | |
| 1548 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1549 } | |
| 1550 } | |
| 1551 | |
| 1552 /* frame payload */ | |
| 1553 | |
| 1554 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
| 1555 | |
| 1556 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
| 1557 | |
| 1558 if (rc == NGX_AGAIN) { | |
| 1559 return NGX_AGAIN; | |
| 1560 } | |
| 1561 | |
| 1562 if (rc == NGX_ERROR) { | |
| 1563 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1564 } | |
| 1565 | |
| 1566 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1567 "upstream rejected request with error %ui", | |
| 1568 ctx->error); | |
| 1569 | |
| 1570 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1571 } | |
| 1572 | |
| 1573 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
| 1574 | |
| 1575 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
| 1576 | |
| 1577 if (rc == NGX_AGAIN) { | |
| 1578 return NGX_AGAIN; | |
| 1579 } | |
| 1580 | |
| 1581 if (rc == NGX_ERROR) { | |
| 1582 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1583 } | |
| 1584 | |
| 1585 /* | |
| 1586 * If stream_id is lower than one we use, our | |
| 1587 * request won't be processed and needs to be retried. | |
| 1588 * If stream_id is greater or equal to the one we use, | |
| 1589 * we can continue normally (except we can't use this | |
| 1590 * connection for additional requests). If there is | |
| 1591 * a real error, the connection will be closed. | |
| 1592 */ | |
| 1593 | |
| 1594 if (ctx->stream_id < ctx->id) { | |
| 1595 | |
| 1596 /* TODO: we can retry non-idempotent requests */ | |
| 1597 | |
| 1598 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1599 "upstream sent goaway with error %ui", | |
| 1600 ctx->error); | |
| 1601 | |
| 1602 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1603 } | |
| 1604 | |
| 1605 continue; | |
| 1606 } | |
| 1607 | |
| 1608 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
| 1609 | |
| 1610 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
| 1611 | |
| 1612 if (rc == NGX_AGAIN) { | |
| 1613 return NGX_AGAIN; | |
| 1614 } | |
| 1615 | |
| 1616 if (rc == NGX_ERROR) { | |
| 1617 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1618 } | |
| 1619 | |
| 1620 if (ctx->in) { | |
| 1621 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1622 } | |
| 1623 | |
| 1624 continue; | |
| 1625 } | |
| 1626 | |
| 1627 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
| 1628 | |
| 1629 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
| 1630 | |
| 1631 if (rc == NGX_AGAIN) { | |
| 1632 return NGX_AGAIN; | |
| 1633 } | |
| 1634 | |
| 1635 if (rc == NGX_ERROR) { | |
| 1636 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1637 } | |
| 1638 | |
| 1639 if (ctx->in) { | |
| 1640 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1641 } | |
| 1642 | |
| 1643 continue; | |
| 1644 } | |
| 1645 | |
| 1646 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
| 1647 | |
| 1648 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
| 1649 | |
| 1650 if (rc == NGX_AGAIN) { | |
| 1651 return NGX_AGAIN; | |
| 1652 } | |
| 1653 | |
| 1654 if (rc == NGX_ERROR) { | |
| 1655 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1656 } | |
| 1657 | |
| 1658 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1659 continue; | |
| 1660 } | |
| 1661 | |
| 1662 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
| 1663 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1664 "upstream sent unexpected push promise frame"); | |
| 1665 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1666 } | |
| 1667 | |
| 1668 if (ctx->type != NGX_HTTP_V2_HEADERS_FRAME | |
| 1669 && ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME) | |
| 1670 { | |
| 1671 /* priority, unknown frames */ | |
| 1672 | |
| 1673 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 1674 ctx->rest -= b->last - b->pos; | |
| 1675 b->pos = b->last; | |
| 1676 return NGX_AGAIN; | |
| 1677 } | |
| 1678 | |
| 1679 b->pos += ctx->rest; | |
| 1680 ctx->rest = 0; | |
| 1681 ctx->state = ngx_http_grpc_st_start; | |
| 1682 | |
| 1683 continue; | |
| 1684 } | |
| 1685 | |
| 1686 /* headers */ | |
| 1687 | |
| 1688 for ( ;; ) { | |
| 1689 | |
| 1690 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
| 1691 | |
| 1692 if (rc == NGX_AGAIN) { | |
| 1693 break; | |
| 1694 } | |
| 1695 | |
| 1696 if (rc == NGX_OK) { | |
| 1697 | |
| 1698 /* a header line has been parsed successfully */ | |
| 1699 | |
| 1700 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1701 "grpc header: \"%V: %V\"", | |
| 1702 &ctx->name, &ctx->value); | |
| 1703 | |
| 1704 if (ctx->name.len && ctx->name.data[0] == ':') { | |
| 1705 | |
| 1706 if (ctx->name.len != sizeof(":status") - 1 | |
| 1707 || ngx_strncmp(ctx->name.data, ":status", | |
| 1708 sizeof(":status") - 1) | |
| 1709 != 0) | |
| 1710 { | |
| 1711 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1712 "upstream sent invalid header \"%V: %V\"", | |
| 1713 &ctx->name, &ctx->value); | |
| 1714 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1715 } | |
| 1716 | |
| 1717 if (ctx->status) { | |
| 1718 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1719 "upstream sent duplicate :status header"); | |
| 1720 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1721 } | |
| 1722 | |
| 1723 status_line = &ctx->value; | |
| 1724 | |
| 1725 if (status_line->len != 3) { | |
| 1726 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1727 "upstream sent invalid :status \"%V\"", | |
| 1728 status_line); | |
| 1729 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1730 } | |
| 1731 | |
| 1732 status = ngx_atoi(status_line->data, 3); | |
| 1733 | |
| 1734 if (status == NGX_ERROR) { | |
| 1735 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1736 "upstream sent invalid :status \"%V\"", | |
| 1737 status_line); | |
| 1738 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1739 } | |
| 1740 | |
| 1741 if (status < NGX_HTTP_OK) { | |
| 1742 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1743 "upstream sent unexpected :status \"%V\"", | |
| 1744 status_line); | |
| 1745 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1746 } | |
| 1747 | |
| 1748 u->headers_in.status_n = status; | |
| 1749 | |
| 1750 if (u->state && u->state->status == 0) { | |
| 1751 u->state->status = status; | |
| 1752 } | |
| 1753 | |
| 1754 ctx->status = 1; | |
| 1755 | |
| 1756 continue; | |
| 1757 | |
| 1758 } else if (!ctx->status) { | |
| 1759 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1760 "upstream sent no :status header"); | |
| 1761 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1762 } | |
| 1763 | |
| 1764 h = ngx_list_push(&u->headers_in.headers); | |
| 1765 if (h == NULL) { | |
| 1766 return NGX_ERROR; | |
| 1767 } | |
| 1768 | |
| 1769 h->key = ctx->name; | |
| 1770 h->value = ctx->value; | |
| 1771 h->lowcase_key = h->key.data; | |
| 1772 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
| 1773 | |
| 1774 hh = ngx_hash_find(&umcf->headers_in_hash, h->hash, | |
| 1775 h->lowcase_key, h->key.len); | |
| 1776 | |
| 1777 if (hh && hh->handler(r, h, hh->offset) != NGX_OK) { | |
| 1778 return NGX_ERROR; | |
| 1779 } | |
| 1780 | |
| 1781 continue; | |
| 1782 } | |
| 1783 | |
| 1784 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
| 1785 | |
| 1786 /* a whole header has been parsed successfully */ | |
| 1787 | |
| 1788 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1789 "grpc header done"); | |
| 1790 | |
|
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1791 if (ctx->end_stream) { |
|
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|
1792 u->headers_in.content_length_n = 0; |
|
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1793 |
|
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|
1794 if (ctx->in == NULL |
|
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|
1795 && ctx->out == NULL |
|
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1796 && ctx->output_closed |
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1797 && !ctx->output_blocked |
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1798 && b->last == b->pos) |
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1799 { |
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1800 u->keepalive = 1; |
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1801 } |
| 7233 | 1802 } |
| 1803 | |
| 1804 return NGX_OK; | |
| 1805 } | |
| 1806 | |
| 1807 /* there was error while a header line parsing */ | |
| 1808 | |
| 1809 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1810 "upstream sent invalid header"); | |
| 1811 | |
| 1812 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1813 } | |
| 1814 | |
| 1815 /* rc == NGX_AGAIN */ | |
| 1816 | |
| 1817 if (ctx->rest == 0) { | |
| 1818 ctx->state = ngx_http_grpc_st_start; | |
| 1819 continue; | |
| 1820 } | |
| 1821 | |
| 1822 return NGX_AGAIN; | |
| 1823 } | |
| 1824 } | |
| 1825 | |
| 1826 | |
| 1827 static ngx_int_t | |
| 1828 ngx_http_grpc_filter_init(void *data) | |
| 1829 { | |
| 1830 ngx_http_grpc_ctx_t *ctx = data; | |
| 1831 | |
| 1832 ngx_http_request_t *r; | |
| 1833 ngx_http_upstream_t *u; | |
| 1834 | |
| 1835 r = ctx->request; | |
| 1836 u = r->upstream; | |
| 1837 | |
| 1838 u->length = 1; | |
| 1839 | |
| 1840 if (ctx->end_stream) { | |
| 1841 u->length = 0; | |
| 1842 } | |
| 1843 | |
| 1844 return NGX_OK; | |
| 1845 } | |
| 1846 | |
| 1847 | |
| 1848 static ngx_int_t | |
| 1849 ngx_http_grpc_filter(void *data, ssize_t bytes) | |
| 1850 { | |
| 1851 ngx_http_grpc_ctx_t *ctx = data; | |
| 1852 | |
| 1853 ngx_int_t rc; | |
| 1854 ngx_buf_t *b, *buf; | |
| 1855 ngx_chain_t *cl, **ll; | |
| 1856 ngx_table_elt_t *h; | |
| 1857 ngx_http_request_t *r; | |
| 1858 ngx_http_upstream_t *u; | |
| 1859 | |
| 1860 r = ctx->request; | |
| 1861 u = r->upstream; | |
| 1862 b = &u->buffer; | |
| 1863 | |
| 1864 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1865 "grpc filter bytes:%z", bytes); | |
| 1866 | |
| 1867 b->pos = b->last; | |
| 1868 b->last += bytes; | |
| 1869 | |
| 1870 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
| 1871 ll = &cl->next; | |
| 1872 } | |
| 1873 | |
| 1874 for ( ;; ) { | |
| 1875 | |
| 1876 if (ctx->state < ngx_http_grpc_st_payload) { | |
| 1877 | |
| 1878 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
| 1879 | |
| 1880 if (rc == NGX_AGAIN) { | |
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1881 |
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1882 if (ctx->done) { |
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1883 |
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1884 /* |
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1885 * We have finished parsing the response and the |
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1886 * remaining control frames. If there are unsent |
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1887 * control frames, post a write event to send them. |
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1888 */ |
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1889 |
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1890 if (ctx->out) { |
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1891 ngx_post_event(u->peer.connection->write, |
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1892 &ngx_posted_events); |
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1893 return NGX_AGAIN; |
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1894 } |
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1895 |
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1896 u->length = 0; |
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1897 |
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1898 if (ctx->in == NULL |
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1899 && ctx->output_closed |
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1900 && !ctx->output_blocked |
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1901 && ctx->state == ngx_http_grpc_st_start) |
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1902 { |
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1903 u->keepalive = 1; |
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1904 } |
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1905 |
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1906 break; |
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1907 } |
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1908 |
| 7233 | 1909 return NGX_AGAIN; |
| 1910 } | |
| 1911 | |
| 1912 if (rc == NGX_ERROR) { | |
| 1913 return NGX_ERROR; | |
| 1914 } | |
| 1915 | |
| 1916 if ((ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1917 && !ctx->parsing_headers) | |
| 1918 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1919 && ctx->parsing_headers)) | |
| 1920 { | |
| 1921 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1922 "upstream sent unexpected http2 frame: %d", | |
| 1923 ctx->type); | |
| 1924 return NGX_ERROR; | |
| 1925 } | |
| 1926 | |
| 1927 if (ctx->type == NGX_HTTP_V2_DATA_FRAME) { | |
| 1928 | |
| 1929 if (ctx->stream_id != ctx->id) { | |
| 1930 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1931 "upstream sent data frame " | |
| 1932 "for unknown stream %ui", | |
| 1933 ctx->stream_id); | |
| 1934 return NGX_ERROR; | |
| 1935 } | |
| 1936 | |
| 1937 if (ctx->rest > ctx->recv_window) { | |
| 1938 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1939 "upstream violated stream flow control, " | |
| 1940 "received %uz data frame with window %uz", | |
| 1941 ctx->rest, ctx->recv_window); | |
| 1942 return NGX_ERROR; | |
| 1943 } | |
| 1944 | |
| 1945 if (ctx->rest > ctx->connection->recv_window) { | |
| 1946 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1947 "upstream violated connection flow control, " | |
| 1948 "received %uz data frame with window %uz", | |
| 1949 ctx->rest, ctx->connection->recv_window); | |
| 1950 return NGX_ERROR; | |
| 1951 } | |
| 1952 | |
| 1953 ctx->recv_window -= ctx->rest; | |
| 1954 ctx->connection->recv_window -= ctx->rest; | |
| 1955 | |
| 1956 if (ctx->connection->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4 | |
| 1957 || ctx->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4) | |
| 1958 { | |
| 1959 if (ngx_http_grpc_send_window_update(r, ctx) != NGX_OK) { | |
| 1960 return NGX_ERROR; | |
| 1961 } | |
| 1962 | |
| 1963 ngx_post_event(u->peer.connection->write, | |
| 1964 &ngx_posted_events); | |
| 1965 } | |
| 1966 } | |
| 1967 | |
| 1968 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
| 1969 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1970 "upstream sent frame for unknown stream %ui", | |
| 1971 ctx->stream_id); | |
| 1972 return NGX_ERROR; | |
| 1973 } | |
| 1974 | |
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1975 if (ctx->stream_id && ctx->done) { |
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1976 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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1977 "upstream sent frame for closed stream %ui", |
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1978 ctx->stream_id); |
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1979 return NGX_ERROR; |
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1980 } |
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1981 |
| 7233 | 1982 ctx->padding = 0; |
| 1983 } | |
| 1984 | |
| 1985 if (ctx->state == ngx_http_grpc_st_padding) { | |
| 1986 | |
| 1987 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 1988 ctx->rest -= b->last - b->pos; | |
| 1989 b->pos = b->last; | |
| 1990 return NGX_AGAIN; | |
| 1991 } | |
| 1992 | |
| 1993 b->pos += ctx->rest; | |
| 1994 ctx->rest = 0; | |
| 1995 ctx->state = ngx_http_grpc_st_start; | |
| 1996 | |
| 1997 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
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1998 ctx->done = 1; |
| 7233 | 1999 } |
| 2000 | |
| 2001 continue; | |
| 2002 } | |
| 2003 | |
| 2004 /* frame payload */ | |
| 2005 | |
| 2006 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
| 2007 | |
| 2008 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
| 2009 | |
| 2010 if (rc == NGX_AGAIN) { | |
| 2011 return NGX_AGAIN; | |
| 2012 } | |
| 2013 | |
| 2014 if (rc == NGX_ERROR) { | |
| 2015 return NGX_ERROR; | |
| 2016 } | |
| 2017 | |
| 2018 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2019 "upstream rejected request with error %ui", | |
| 2020 ctx->error); | |
| 2021 | |
| 2022 return NGX_ERROR; | |
| 2023 } | |
| 2024 | |
| 2025 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
| 2026 | |
| 2027 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
| 2028 | |
| 2029 if (rc == NGX_AGAIN) { | |
| 2030 return NGX_AGAIN; | |
| 2031 } | |
| 2032 | |
| 2033 if (rc == NGX_ERROR) { | |
| 2034 return NGX_ERROR; | |
| 2035 } | |
| 2036 | |
| 2037 /* | |
| 2038 * If stream_id is lower than one we use, our | |
| 2039 * request won't be processed and needs to be retried. | |
| 2040 * If stream_id is greater or equal to the one we use, | |
| 2041 * we can continue normally (except we can't use this | |
| 2042 * connection for additional requests). If there is | |
| 2043 * a real error, the connection will be closed. | |
| 2044 */ | |
| 2045 | |
| 2046 if (ctx->stream_id < ctx->id) { | |
| 2047 | |
| 2048 /* TODO: we can retry non-idempotent requests */ | |
| 2049 | |
| 2050 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2051 "upstream sent goaway with error %ui", | |
| 2052 ctx->error); | |
| 2053 | |
| 2054 return NGX_ERROR; | |
| 2055 } | |
| 2056 | |
| 2057 continue; | |
| 2058 } | |
| 2059 | |
| 2060 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
| 2061 | |
| 2062 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
| 2063 | |
| 2064 if (rc == NGX_AGAIN) { | |
| 2065 return NGX_AGAIN; | |
| 2066 } | |
| 2067 | |
| 2068 if (rc == NGX_ERROR) { | |
| 2069 return NGX_ERROR; | |
| 2070 } | |
| 2071 | |
| 2072 if (ctx->in) { | |
| 2073 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2074 } | |
| 2075 | |
| 2076 continue; | |
| 2077 } | |
| 2078 | |
| 2079 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
| 2080 | |
| 2081 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
| 2082 | |
| 2083 if (rc == NGX_AGAIN) { | |
| 2084 return NGX_AGAIN; | |
| 2085 } | |
| 2086 | |
| 2087 if (rc == NGX_ERROR) { | |
| 2088 return NGX_ERROR; | |
| 2089 } | |
| 2090 | |
| 2091 if (ctx->in) { | |
| 2092 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2093 } | |
| 2094 | |
| 2095 continue; | |
| 2096 } | |
| 2097 | |
| 2098 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
| 2099 | |
| 2100 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
| 2101 | |
| 2102 if (rc == NGX_AGAIN) { | |
| 2103 return NGX_AGAIN; | |
| 2104 } | |
| 2105 | |
| 2106 if (rc == NGX_ERROR) { | |
| 2107 return NGX_ERROR; | |
| 2108 } | |
| 2109 | |
| 2110 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2111 continue; | |
| 2112 } | |
| 2113 | |
| 2114 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
| 2115 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2116 "upstream sent unexpected push promise frame"); | |
| 2117 return NGX_ERROR; | |
| 2118 } | |
| 2119 | |
| 2120 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME | |
| 2121 || ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) | |
| 2122 { | |
| 2123 for ( ;; ) { | |
| 2124 | |
| 2125 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
| 2126 | |
| 2127 if (rc == NGX_AGAIN) { | |
| 2128 break; | |
| 2129 } | |
| 2130 | |
| 2131 if (rc == NGX_OK) { | |
| 2132 | |
| 2133 /* a header line has been parsed successfully */ | |
| 2134 | |
| 2135 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2136 "grpc trailer: \"%V: %V\"", | |
| 2137 &ctx->name, &ctx->value); | |
| 2138 | |
| 2139 if (ctx->name.len && ctx->name.data[0] == ':') { | |
| 2140 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2141 "upstream sent invalid " | |
| 2142 "trailer \"%V: %V\"", | |
| 2143 &ctx->name, &ctx->value); | |
| 2144 return NGX_ERROR; | |
| 2145 } | |
| 2146 | |
| 2147 h = ngx_list_push(&u->headers_in.trailers); | |
| 2148 if (h == NULL) { | |
| 2149 return NGX_ERROR; | |
| 2150 } | |
| 2151 | |
| 2152 h->key = ctx->name; | |
| 2153 h->value = ctx->value; | |
| 2154 h->lowcase_key = h->key.data; | |
| 2155 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
| 2156 | |
| 2157 continue; | |
| 2158 } | |
| 2159 | |
| 2160 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
| 2161 | |
| 2162 /* a whole header has been parsed successfully */ | |
| 2163 | |
| 2164 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2165 "grpc trailer done"); | |
| 2166 | |
| 2167 if (ctx->end_stream) { | |
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2168 ctx->done = 1; |
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2169 break; |
| 7233 | 2170 } |
| 2171 | |
| 2172 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2173 "upstream sent trailer without " | |
| 2174 "end stream flag"); | |
| 2175 return NGX_ERROR; | |
| 2176 } | |
| 2177 | |
| 2178 /* there was error while a header line parsing */ | |
| 2179 | |
| 2180 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2181 "upstream sent invalid trailer"); | |
| 2182 | |
| 2183 return NGX_ERROR; | |
| 2184 } | |
| 2185 | |
|
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2186 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { |
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2187 continue; |
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2188 } |
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2189 |
| 7233 | 2190 /* rc == NGX_AGAIN */ |
| 2191 | |
| 2192 if (ctx->rest == 0) { | |
| 2193 ctx->state = ngx_http_grpc_st_start; | |
| 2194 continue; | |
| 2195 } | |
| 2196 | |
| 2197 return NGX_AGAIN; | |
| 2198 } | |
| 2199 | |
| 2200 if (ctx->type != NGX_HTTP_V2_DATA_FRAME) { | |
| 2201 | |
| 2202 /* priority, unknown frames */ | |
| 2203 | |
| 2204 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2205 ctx->rest -= b->last - b->pos; | |
| 2206 b->pos = b->last; | |
| 2207 return NGX_AGAIN; | |
| 2208 } | |
| 2209 | |
| 2210 b->pos += ctx->rest; | |
| 2211 ctx->rest = 0; | |
| 2212 ctx->state = ngx_http_grpc_st_start; | |
| 2213 | |
| 2214 continue; | |
| 2215 } | |
| 2216 | |
| 2217 /* | |
| 2218 * data frame: | |
| 2219 * | |
| 2220 * +---------------+ | |
| 2221 * |Pad Length? (8)| | |
| 2222 * +---------------+-----------------------------------------------+ | |
| 2223 * | Data (*) ... | |
| 2224 * +---------------------------------------------------------------+ | |
| 2225 * | Padding (*) ... | |
| 2226 * +---------------------------------------------------------------+ | |
| 2227 */ | |
| 2228 | |
| 2229 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
| 2230 | |
| 2231 if (ctx->rest == 0) { | |
| 2232 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2233 "upstream sent too short http2 frame"); | |
| 2234 return NGX_ERROR; | |
| 2235 } | |
| 2236 | |
| 2237 if (b->pos == b->last) { | |
| 2238 return NGX_AGAIN; | |
| 2239 } | |
| 2240 | |
| 2241 ctx->flags &= ~NGX_HTTP_V2_PADDED_FLAG; | |
| 2242 ctx->padding = *b->pos++; | |
| 2243 ctx->rest -= 1; | |
| 2244 | |
| 2245 if (ctx->padding > ctx->rest) { | |
| 2246 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2247 "upstream sent http2 frame with too long " | |
| 2248 "padding: %d in frame %uz", | |
| 2249 ctx->padding, ctx->rest); | |
| 2250 return NGX_ERROR; | |
| 2251 } | |
| 2252 | |
| 2253 continue; | |
| 2254 } | |
| 2255 | |
| 2256 if (ctx->rest == ctx->padding) { | |
| 2257 goto done; | |
| 2258 } | |
| 2259 | |
| 2260 if (b->pos == b->last) { | |
| 2261 return NGX_AGAIN; | |
| 2262 } | |
| 2263 | |
| 2264 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
| 2265 if (cl == NULL) { | |
| 2266 return NGX_ERROR; | |
| 2267 } | |
| 2268 | |
| 2269 *ll = cl; | |
| 2270 ll = &cl->next; | |
| 2271 | |
| 2272 buf = cl->buf; | |
| 2273 | |
| 2274 buf->flush = 1; | |
| 2275 buf->memory = 1; | |
| 2276 | |
| 2277 buf->pos = b->pos; | |
| 2278 buf->tag = u->output.tag; | |
| 2279 | |
| 2280 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2281 "grpc output buf %p", buf->pos); | |
| 2282 | |
| 2283 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
| 2284 | |
| 2285 ctx->rest -= b->last - b->pos; | |
| 2286 b->pos = b->last; | |
| 2287 buf->last = b->pos; | |
| 2288 | |
| 2289 return NGX_AGAIN; | |
| 2290 } | |
| 2291 | |
| 2292 b->pos += ctx->rest - ctx->padding; | |
| 2293 buf->last = b->pos; | |
| 2294 ctx->rest = ctx->padding; | |
| 2295 | |
| 2296 done: | |
| 2297 | |
| 2298 if (ctx->padding) { | |
| 2299 ctx->state = ngx_http_grpc_st_padding; | |
| 2300 continue; | |
| 2301 } | |
| 2302 | |
| 2303 ctx->state = ngx_http_grpc_st_start; | |
| 2304 | |
| 2305 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
2306 ctx->done = 1; |
| 7233 | 2307 } |
| 2308 } | |
| 2309 | |
| 2310 return NGX_OK; | |
| 2311 } | |
| 2312 | |
| 2313 | |
| 2314 static ngx_int_t | |
| 2315 ngx_http_grpc_parse_frame(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2316 ngx_buf_t *b) | |
| 2317 { | |
| 2318 u_char ch, *p; | |
| 2319 ngx_http_grpc_state_e state; | |
| 2320 | |
| 2321 state = ctx->state; | |
| 2322 | |
| 2323 for (p = b->pos; p < b->last; p++) { | |
| 2324 ch = *p; | |
| 2325 | |
| 2326 #if 0 | |
| 2327 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2328 "grpc frame byte: %02Xd, s:%d", ch, state); | |
| 2329 #endif | |
| 2330 | |
| 2331 switch (state) { | |
| 2332 | |
| 2333 case ngx_http_grpc_st_start: | |
| 2334 ctx->rest = ch << 16; | |
| 2335 state = ngx_http_grpc_st_length_2; | |
| 2336 break; | |
| 2337 | |
| 2338 case ngx_http_grpc_st_length_2: | |
| 2339 ctx->rest |= ch << 8; | |
| 2340 state = ngx_http_grpc_st_length_3; | |
| 2341 break; | |
| 2342 | |
| 2343 case ngx_http_grpc_st_length_3: | |
| 2344 ctx->rest |= ch; | |
| 2345 | |
| 2346 if (ctx->rest > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 2347 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2348 "upstream sent too large http2 frame: %uz", | |
| 2349 ctx->rest); | |
| 2350 return NGX_ERROR; | |
| 2351 } | |
| 2352 | |
| 2353 state = ngx_http_grpc_st_type; | |
| 2354 break; | |
| 2355 | |
| 2356 case ngx_http_grpc_st_type: | |
| 2357 ctx->type = ch; | |
| 2358 state = ngx_http_grpc_st_flags; | |
| 2359 break; | |
| 2360 | |
| 2361 case ngx_http_grpc_st_flags: | |
| 2362 ctx->flags = ch; | |
| 2363 state = ngx_http_grpc_st_stream_id; | |
| 2364 break; | |
| 2365 | |
| 2366 case ngx_http_grpc_st_stream_id: | |
| 2367 ctx->stream_id = (ch & 0x7f) << 24; | |
| 2368 state = ngx_http_grpc_st_stream_id_2; | |
| 2369 break; | |
| 2370 | |
| 2371 case ngx_http_grpc_st_stream_id_2: | |
| 2372 ctx->stream_id |= ch << 16; | |
| 2373 state = ngx_http_grpc_st_stream_id_3; | |
| 2374 break; | |
| 2375 | |
| 2376 case ngx_http_grpc_st_stream_id_3: | |
| 2377 ctx->stream_id |= ch << 8; | |
| 2378 state = ngx_http_grpc_st_stream_id_4; | |
| 2379 break; | |
| 2380 | |
| 2381 case ngx_http_grpc_st_stream_id_4: | |
| 2382 ctx->stream_id |= ch; | |
| 2383 | |
| 2384 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2385 "grpc frame: %d, len: %uz, f:%d, i:%ui", | |
| 2386 ctx->type, ctx->rest, ctx->flags, ctx->stream_id); | |
| 2387 | |
| 2388 b->pos = p + 1; | |
| 2389 | |
| 2390 ctx->state = ngx_http_grpc_st_payload; | |
| 2391 ctx->frame_state = 0; | |
| 2392 | |
| 2393 return NGX_OK; | |
| 2394 | |
| 2395 /* suppress warning */ | |
| 2396 case ngx_http_grpc_st_payload: | |
| 2397 case ngx_http_grpc_st_padding: | |
| 2398 break; | |
| 2399 } | |
| 2400 } | |
| 2401 | |
| 2402 b->pos = p; | |
| 2403 ctx->state = state; | |
| 2404 | |
| 2405 return NGX_AGAIN; | |
| 2406 } | |
| 2407 | |
| 2408 | |
| 2409 static ngx_int_t | |
| 2410 ngx_http_grpc_parse_header(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2411 ngx_buf_t *b) | |
| 2412 { | |
| 2413 u_char ch, *p, *last; | |
| 2414 size_t min; | |
| 2415 ngx_int_t rc; | |
| 2416 enum { | |
| 2417 sw_start = 0, | |
| 2418 sw_padding_length, | |
| 2419 sw_dependency, | |
| 2420 sw_dependency_2, | |
| 2421 sw_dependency_3, | |
| 2422 sw_dependency_4, | |
| 2423 sw_weight, | |
| 2424 sw_fragment, | |
| 2425 sw_padding | |
| 2426 } state; | |
| 2427 | |
| 2428 state = ctx->frame_state; | |
| 2429 | |
| 2430 if (state == sw_start) { | |
| 2431 | |
| 2432 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2433 "grpc parse header: start"); | |
| 2434 | |
| 2435 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME) { | |
| 2436 ctx->parsing_headers = 1; | |
| 2437 ctx->fragment_state = 0; | |
| 2438 | |
| 2439 min = (ctx->flags & NGX_HTTP_V2_PADDED_FLAG ? 1 : 0) | |
| 2440 + (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG ? 5 : 0); | |
| 2441 | |
| 2442 if (ctx->rest < min) { | |
| 2443 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2444 "upstream sent headers frame " | |
| 2445 "with invalid length: %uz", | |
| 2446 ctx->rest); | |
| 2447 return NGX_ERROR; | |
| 2448 } | |
| 2449 | |
| 2450 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
| 2451 ctx->end_stream = 1; | |
| 2452 } | |
| 2453 | |
| 2454 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
| 2455 state = sw_padding_length; | |
| 2456 | |
| 2457 } else if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
| 2458 state = sw_dependency; | |
| 2459 | |
| 2460 } else { | |
| 2461 state = sw_fragment; | |
| 2462 } | |
| 2463 | |
| 2464 } else if (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) { | |
| 2465 state = sw_fragment; | |
| 2466 } | |
| 2467 | |
| 2468 ctx->padding = 0; | |
|
7242
25a4353633a0
gRPC: fixed missing state save in frame header parsing.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7240
diff
changeset
|
2469 ctx->frame_state = state; |
| 7233 | 2470 } |
| 2471 | |
| 2472 if (state < sw_fragment) { | |
| 2473 | |
| 2474 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2475 last = b->last; | |
| 2476 | |
| 2477 } else { | |
| 2478 last = b->pos + ctx->rest; | |
| 2479 } | |
| 2480 | |
| 2481 for (p = b->pos; p < last; p++) { | |
| 2482 ch = *p; | |
| 2483 | |
| 2484 #if 0 | |
| 2485 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2486 "grpc header byte: %02Xd s:%d", ch, state); | |
| 2487 #endif | |
| 2488 | |
| 2489 /* | |
| 2490 * headers frame: | |
| 2491 * | |
| 2492 * +---------------+ | |
| 2493 * |Pad Length? (8)| | |
| 2494 * +-+-------------+----------------------------------------------+ | |
| 2495 * |E| Stream Dependency? (31) | | |
| 2496 * +-+-------------+----------------------------------------------+ | |
| 2497 * | Weight? (8) | | |
| 2498 * +-+-------------+----------------------------------------------+ | |
| 2499 * | Header Block Fragment (*) ... | |
| 2500 * +--------------------------------------------------------------+ | |
| 2501 * | Padding (*) ... | |
| 2502 * +--------------------------------------------------------------+ | |
| 2503 */ | |
| 2504 | |
| 2505 switch (state) { | |
| 2506 | |
| 2507 case sw_padding_length: | |
| 2508 | |
| 2509 ctx->padding = ch; | |
| 2510 | |
| 2511 if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
| 2512 state = sw_dependency; | |
| 2513 break; | |
| 2514 } | |
| 2515 | |
| 2516 goto fragment; | |
| 2517 | |
| 2518 case sw_dependency: | |
| 2519 state = sw_dependency_2; | |
| 2520 break; | |
| 2521 | |
| 2522 case sw_dependency_2: | |
| 2523 state = sw_dependency_3; | |
| 2524 break; | |
| 2525 | |
| 2526 case sw_dependency_3: | |
| 2527 state = sw_dependency_4; | |
| 2528 break; | |
| 2529 | |
| 2530 case sw_dependency_4: | |
| 2531 state = sw_weight; | |
| 2532 break; | |
| 2533 | |
| 2534 case sw_weight: | |
| 2535 goto fragment; | |
| 2536 | |
| 2537 /* suppress warning */ | |
| 2538 case sw_start: | |
| 2539 case sw_fragment: | |
| 2540 case sw_padding: | |
| 2541 break; | |
| 2542 } | |
| 2543 } | |
| 2544 | |
| 2545 ctx->rest -= p - b->pos; | |
| 2546 b->pos = p; | |
| 2547 | |
| 2548 ctx->frame_state = state; | |
| 2549 return NGX_AGAIN; | |
| 2550 | |
| 2551 fragment: | |
| 2552 | |
| 2553 p++; | |
| 2554 ctx->rest -= p - b->pos; | |
| 2555 b->pos = p; | |
| 2556 | |
| 2557 if (ctx->padding > ctx->rest) { | |
| 2558 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2559 "upstream sent http2 frame with too long " | |
| 2560 "padding: %d in frame %uz", | |
| 2561 ctx->padding, ctx->rest); | |
| 2562 return NGX_ERROR; | |
| 2563 } | |
| 2564 | |
| 2565 state = sw_fragment; | |
| 2566 ctx->frame_state = state; | |
| 2567 } | |
| 2568 | |
| 2569 if (state == sw_fragment) { | |
| 2570 | |
| 2571 rc = ngx_http_grpc_parse_fragment(r, ctx, b); | |
| 2572 | |
| 2573 if (rc == NGX_AGAIN) { | |
| 2574 return NGX_AGAIN; | |
| 2575 } | |
| 2576 | |
| 2577 if (rc == NGX_ERROR) { | |
| 2578 return NGX_ERROR; | |
| 2579 } | |
| 2580 | |
| 2581 if (rc == NGX_OK) { | |
| 2582 return NGX_OK; | |
| 2583 } | |
| 2584 | |
| 2585 /* rc == NGX_DONE */ | |
| 2586 | |
| 2587 state = sw_padding; | |
| 2588 ctx->frame_state = state; | |
| 2589 } | |
| 2590 | |
| 2591 if (state == sw_padding) { | |
| 2592 | |
| 2593 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2594 | |
| 2595 ctx->rest -= b->last - b->pos; | |
| 2596 b->pos = b->last; | |
| 2597 | |
| 2598 return NGX_AGAIN; | |
| 2599 } | |
| 2600 | |
| 2601 b->pos += ctx->rest; | |
| 2602 ctx->rest = 0; | |
| 2603 | |
| 2604 ctx->state = ngx_http_grpc_st_start; | |
| 2605 | |
| 2606 if (ctx->flags & NGX_HTTP_V2_END_HEADERS_FLAG) { | |
| 2607 | |
| 2608 if (ctx->fragment_state) { | |
| 2609 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2610 "upstream sent truncated http2 header"); | |
| 2611 return NGX_ERROR; | |
| 2612 } | |
| 2613 | |
| 2614 ctx->parsing_headers = 0; | |
| 2615 | |
| 2616 return NGX_HTTP_PARSE_HEADER_DONE; | |
| 2617 } | |
| 2618 | |
| 2619 return NGX_AGAIN; | |
| 2620 } | |
| 2621 | |
| 2622 /* unreachable */ | |
| 2623 | |
| 2624 return NGX_ERROR; | |
| 2625 } | |
| 2626 | |
| 2627 | |
| 2628 static ngx_int_t | |
| 2629 ngx_http_grpc_parse_fragment(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2630 ngx_buf_t *b) | |
| 2631 { | |
| 2632 u_char ch, *p, *last; | |
| 2633 size_t size; | |
| 2634 ngx_uint_t index, size_update; | |
| 2635 enum { | |
| 2636 sw_start = 0, | |
| 2637 sw_index, | |
| 2638 sw_name_length, | |
| 2639 sw_name_length_2, | |
| 2640 sw_name_length_3, | |
| 2641 sw_name_length_4, | |
| 2642 sw_name, | |
| 2643 sw_name_bytes, | |
| 2644 sw_value_length, | |
| 2645 sw_value_length_2, | |
| 2646 sw_value_length_3, | |
| 2647 sw_value_length_4, | |
| 2648 sw_value, | |
| 2649 sw_value_bytes | |
| 2650 } state; | |
| 2651 | |
| 2652 /* header block fragment */ | |
| 2653 | |
| 2654 #if 0 | |
| 2655 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2656 "grpc header fragment %p:%p rest:%uz", | |
| 2657 b->pos, b->last, ctx->rest); | |
| 2658 #endif | |
| 2659 | |
| 2660 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
| 2661 last = b->last; | |
| 2662 | |
| 2663 } else { | |
| 2664 last = b->pos + ctx->rest - ctx->padding; | |
| 2665 } | |
| 2666 | |
| 2667 state = ctx->fragment_state; | |
| 2668 | |
| 2669 for (p = b->pos; p < last; p++) { | |
| 2670 ch = *p; | |
| 2671 | |
| 2672 #if 0 | |
| 2673 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2674 "grpc header byte: %02Xd s:%d", ch, state); | |
| 2675 #endif | |
| 2676 | |
| 2677 switch (state) { | |
| 2678 | |
| 2679 case sw_start: | |
| 2680 ctx->index = 0; | |
| 2681 | |
| 2682 if ((ch & 0x80) == 0x80) { | |
| 2683 /* | |
| 2684 * indexed header: | |
| 2685 * | |
| 2686 * 0 1 2 3 4 5 6 7 | |
| 2687 * +---+---+---+---+---+---+---+---+ | |
| 2688 * | 1 | Index (7+) | | |
| 2689 * +---+---------------------------+ | |
| 2690 */ | |
| 2691 | |
| 2692 index = ch & ~0x80; | |
| 2693 | |
| 2694 if (index == 0 || index > 61) { | |
| 2695 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2696 "upstream sent invalid http2 " | |
| 2697 "table index: %ui", index); | |
| 2698 return NGX_ERROR; | |
| 2699 } | |
| 2700 | |
| 2701 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2702 "grpc indexed header: %ui", index); | |
| 2703 | |
| 2704 ctx->index = index; | |
| 2705 ctx->literal = 0; | |
| 2706 | |
| 2707 goto done; | |
| 2708 | |
| 2709 } else if ((ch & 0xc0) == 0x40) { | |
| 2710 /* | |
| 2711 * literal header with incremental indexing: | |
| 2712 * | |
| 2713 * 0 1 2 3 4 5 6 7 | |
| 2714 * +---+---+---+---+---+---+---+---+ | |
| 2715 * | 0 | 1 | Index (6+) | | |
| 2716 * +---+---+-----------------------+ | |
| 2717 * | H | Value Length (7+) | | |
| 2718 * +---+---------------------------+ | |
| 2719 * | Value String (Length octets) | | |
| 2720 * +-------------------------------+ | |
| 2721 * | |
| 2722 * 0 1 2 3 4 5 6 7 | |
| 2723 * +---+---+---+---+---+---+---+---+ | |
| 2724 * | 0 | 1 | 0 | | |
| 2725 * +---+---+-----------------------+ | |
| 2726 * | H | Name Length (7+) | | |
| 2727 * +---+---------------------------+ | |
| 2728 * | Name String (Length octets) | | |
| 2729 * +---+---------------------------+ | |
| 2730 * | H | Value Length (7+) | | |
| 2731 * +---+---------------------------+ | |
| 2732 * | Value String (Length octets) | | |
| 2733 * +-------------------------------+ | |
| 2734 */ | |
| 2735 | |
| 2736 index = ch & ~0xc0; | |
| 2737 | |
| 2738 if (index > 61) { | |
| 2739 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2740 "upstream sent invalid http2 " | |
| 2741 "table index: %ui", index); | |
| 2742 return NGX_ERROR; | |
| 2743 } | |
| 2744 | |
| 2745 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2746 "grpc literal header: %ui", index); | |
| 2747 | |
| 2748 if (index == 0) { | |
| 2749 state = sw_name_length; | |
| 2750 break; | |
| 2751 } | |
| 2752 | |
| 2753 ctx->index = index; | |
| 2754 ctx->literal = 1; | |
| 2755 | |
| 2756 state = sw_value_length; | |
| 2757 break; | |
| 2758 | |
| 2759 } else if ((ch & 0xe0) == 0x20) { | |
| 2760 /* | |
| 2761 * dynamic table size update: | |
| 2762 * | |
| 2763 * 0 1 2 3 4 5 6 7 | |
| 2764 * +---+---+---+---+---+---+---+---+ | |
| 2765 * | 0 | 0 | 1 | Max size (5+) | | |
| 2766 * +---+---------------------------+ | |
| 2767 */ | |
| 2768 | |
| 2769 size_update = ch & ~0xe0; | |
| 2770 | |
| 2771 if (size_update > 0) { | |
| 2772 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2773 "upstream sent invalid http2 " | |
| 2774 "dynamic table size update: %ui", | |
| 2775 size_update); | |
| 2776 return NGX_ERROR; | |
| 2777 } | |
| 2778 | |
| 2779 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2780 "grpc table size update: %ui", size_update); | |
| 2781 | |
| 2782 break; | |
| 2783 | |
| 2784 } else if ((ch & 0xf0) == 0x10) { | |
| 2785 /* | |
| 2786 * literal header field never indexed: | |
| 2787 * | |
| 2788 * 0 1 2 3 4 5 6 7 | |
| 2789 * +---+---+---+---+---+---+---+---+ | |
| 2790 * | 0 | 0 | 0 | 1 | Index (4+) | | |
| 2791 * +---+---+-----------------------+ | |
| 2792 * | H | Value Length (7+) | | |
| 2793 * +---+---------------------------+ | |
| 2794 * | Value String (Length octets) | | |
| 2795 * +-------------------------------+ | |
| 2796 * | |
| 2797 * 0 1 2 3 4 5 6 7 | |
| 2798 * +---+---+---+---+---+---+---+---+ | |
| 2799 * | 0 | 0 | 0 | 1 | 0 | | |
| 2800 * +---+---+-----------------------+ | |
| 2801 * | H | Name Length (7+) | | |
| 2802 * +---+---------------------------+ | |
| 2803 * | Name String (Length octets) | | |
| 2804 * +---+---------------------------+ | |
| 2805 * | H | Value Length (7+) | | |
| 2806 * +---+---------------------------+ | |
| 2807 * | Value String (Length octets) | | |
| 2808 * +-------------------------------+ | |
| 2809 */ | |
| 2810 | |
| 2811 index = ch & ~0xf0; | |
| 2812 | |
| 2813 if (index == 0x0f) { | |
| 2814 ctx->index = index; | |
| 2815 ctx->literal = 1; | |
| 2816 state = sw_index; | |
| 2817 break; | |
| 2818 } | |
| 2819 | |
| 2820 if (index == 0) { | |
| 2821 state = sw_name_length; | |
| 2822 break; | |
| 2823 } | |
| 2824 | |
| 2825 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2826 "grpc literal header never indexed: %ui", | |
| 2827 index); | |
| 2828 | |
| 2829 ctx->index = index; | |
| 2830 ctx->literal = 1; | |
| 2831 | |
| 2832 state = sw_value_length; | |
| 2833 break; | |
| 2834 | |
| 2835 } else if ((ch & 0xf0) == 0x00) { | |
| 2836 /* | |
| 2837 * literal header field without indexing: | |
| 2838 * | |
| 2839 * 0 1 2 3 4 5 6 7 | |
| 2840 * +---+---+---+---+---+---+---+---+ | |
| 2841 * | 0 | 0 | 0 | 0 | Index (4+) | | |
| 2842 * +---+---+-----------------------+ | |
| 2843 * | H | Value Length (7+) | | |
| 2844 * +---+---------------------------+ | |
| 2845 * | Value String (Length octets) | | |
| 2846 * +-------------------------------+ | |
| 2847 * | |
| 2848 * 0 1 2 3 4 5 6 7 | |
| 2849 * +---+---+---+---+---+---+---+---+ | |
| 2850 * | 0 | 0 | 0 | 0 | 0 | | |
| 2851 * +---+---+-----------------------+ | |
| 2852 * | H | Name Length (7+) | | |
| 2853 * +---+---------------------------+ | |
| 2854 * | Name String (Length octets) | | |
| 2855 * +---+---------------------------+ | |
| 2856 * | H | Value Length (7+) | | |
| 2857 * +---+---------------------------+ | |
| 2858 * | Value String (Length octets) | | |
| 2859 * +-------------------------------+ | |
| 2860 */ | |
| 2861 | |
| 2862 index = ch & ~0xf0; | |
| 2863 | |
| 2864 if (index == 0x0f) { | |
| 2865 ctx->index = index; | |
| 2866 ctx->literal = 1; | |
| 2867 state = sw_index; | |
| 2868 break; | |
| 2869 } | |
| 2870 | |
| 2871 if (index == 0) { | |
| 2872 state = sw_name_length; | |
| 2873 break; | |
| 2874 } | |
| 2875 | |
| 2876 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2877 "grpc literal header without indexing: %ui", | |
| 2878 index); | |
| 2879 | |
| 2880 ctx->index = index; | |
| 2881 ctx->literal = 1; | |
| 2882 | |
| 2883 state = sw_value_length; | |
| 2884 break; | |
| 2885 } | |
| 2886 | |
| 2887 /* not reached */ | |
| 2888 | |
| 2889 return NGX_ERROR; | |
| 2890 | |
| 2891 case sw_index: | |
| 2892 ctx->index = ctx->index + (ch & ~0x80); | |
| 2893 | |
| 2894 if (ch & 0x80) { | |
| 2895 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2896 "upstream sent http2 table index " | |
| 2897 "with continuation flag"); | |
| 2898 return NGX_ERROR; | |
| 2899 } | |
| 2900 | |
| 2901 if (ctx->index > 61) { | |
| 2902 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2903 "upstream sent invalid http2 " | |
| 2904 "table index: %ui", ctx->index); | |
| 2905 return NGX_ERROR; | |
| 2906 } | |
| 2907 | |
| 2908 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2909 "grpc header index: %ui", ctx->index); | |
| 2910 | |
| 2911 state = sw_value_length; | |
| 2912 break; | |
| 2913 | |
| 2914 case sw_name_length: | |
| 2915 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
| 2916 ctx->field_length = ch & ~0x80; | |
| 2917 | |
| 2918 if (ctx->field_length == 0x7f) { | |
| 2919 state = sw_name_length_2; | |
| 2920 break; | |
| 2921 } | |
| 2922 | |
| 2923 if (ctx->field_length == 0) { | |
| 2924 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2925 "upstream sent zero http2 " | |
| 2926 "header name length"); | |
| 2927 return NGX_ERROR; | |
| 2928 } | |
| 2929 | |
| 2930 state = sw_name; | |
| 2931 break; | |
| 2932 | |
| 2933 case sw_name_length_2: | |
| 2934 ctx->field_length += ch & ~0x80; | |
| 2935 | |
| 2936 if (ch & 0x80) { | |
| 2937 state = sw_name_length_3; | |
| 2938 break; | |
| 2939 } | |
| 2940 | |
| 2941 state = sw_name; | |
| 2942 break; | |
| 2943 | |
| 2944 case sw_name_length_3: | |
| 2945 ctx->field_length += (ch & ~0x80) << 7; | |
| 2946 | |
| 2947 if (ch & 0x80) { | |
| 2948 state = sw_name_length_4; | |
| 2949 break; | |
| 2950 } | |
| 2951 | |
| 2952 state = sw_name; | |
| 2953 break; | |
| 2954 | |
| 2955 case sw_name_length_4: | |
| 2956 ctx->field_length += (ch & ~0x80) << 14; | |
| 2957 | |
| 2958 if (ch & 0x80) { | |
| 2959 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2960 "upstream sent too large http2 " | |
| 2961 "header name length"); | |
| 2962 return NGX_ERROR; | |
| 2963 } | |
| 2964 | |
| 2965 state = sw_name; | |
| 2966 break; | |
| 2967 | |
| 2968 case sw_name: | |
| 2969 ctx->name.len = ctx->field_huffman ? | |
| 2970 ctx->field_length * 8 / 5 : ctx->field_length; | |
| 2971 | |
| 2972 ctx->name.data = ngx_pnalloc(r->pool, ctx->name.len + 1); | |
| 2973 if (ctx->name.data == NULL) { | |
| 2974 return NGX_ERROR; | |
| 2975 } | |
| 2976 | |
| 2977 ctx->field_end = ctx->name.data; | |
| 2978 ctx->field_rest = ctx->field_length; | |
| 2979 ctx->field_state = 0; | |
| 2980 | |
| 2981 state = sw_name_bytes; | |
| 2982 | |
| 2983 /* fall through */ | |
| 2984 | |
| 2985 case sw_name_bytes: | |
| 2986 | |
| 2987 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2988 "grpc name: len:%uz h:%d last:%uz, rest:%uz", | |
| 2989 ctx->field_length, | |
| 2990 ctx->field_huffman, | |
| 2991 last - p, | |
| 2992 ctx->rest - (p - b->pos)); | |
| 2993 | |
| 2994 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
| 2995 ctx->field_rest -= size; | |
| 2996 | |
| 2997 if (ctx->field_huffman) { | |
| 2998 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
| 2999 &ctx->field_end, | |
| 3000 ctx->field_rest == 0, | |
| 3001 r->connection->log) | |
| 3002 != NGX_OK) | |
| 3003 { | |
| 3004 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3005 "upstream sent invalid encoded header"); | |
| 3006 return NGX_ERROR; | |
| 3007 } | |
| 3008 | |
| 3009 ctx->name.len = ctx->field_end - ctx->name.data; | |
| 3010 ctx->name.data[ctx->name.len] = '\0'; | |
| 3011 | |
| 3012 } else { | |
|
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3013 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
| 7233 | 3014 ctx->name.data[ctx->name.len] = '\0'; |
| 3015 } | |
| 3016 | |
| 3017 p += size - 1; | |
| 3018 | |
| 3019 if (ctx->field_rest == 0) { | |
| 3020 state = sw_value_length; | |
| 3021 } | |
| 3022 | |
| 3023 break; | |
| 3024 | |
| 3025 case sw_value_length: | |
| 3026 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
| 3027 ctx->field_length = ch & ~0x80; | |
| 3028 | |
| 3029 if (ctx->field_length == 0x7f) { | |
| 3030 state = sw_value_length_2; | |
| 3031 break; | |
| 3032 } | |
| 3033 | |
| 3034 if (ctx->field_length == 0) { | |
| 3035 ngx_str_set(&ctx->value, ""); | |
| 3036 goto done; | |
| 3037 } | |
| 3038 | |
| 3039 state = sw_value; | |
| 3040 break; | |
| 3041 | |
| 3042 case sw_value_length_2: | |
| 3043 ctx->field_length += ch & ~0x80; | |
| 3044 | |
| 3045 if (ch & 0x80) { | |
| 3046 state = sw_value_length_3; | |
| 3047 break; | |
| 3048 } | |
| 3049 | |
| 3050 state = sw_value; | |
| 3051 break; | |
| 3052 | |
| 3053 case sw_value_length_3: | |
| 3054 ctx->field_length += (ch & ~0x80) << 7; | |
| 3055 | |
| 3056 if (ch & 0x80) { | |
| 3057 state = sw_value_length_4; | |
| 3058 break; | |
| 3059 } | |
| 3060 | |
| 3061 state = sw_value; | |
| 3062 break; | |
| 3063 | |
| 3064 case sw_value_length_4: | |
| 3065 ctx->field_length += (ch & ~0x80) << 14; | |
| 3066 | |
| 3067 if (ch & 0x80) { | |
| 3068 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3069 "upstream sent too large http2 " | |
| 3070 "header value length"); | |
| 3071 return NGX_ERROR; | |
| 3072 } | |
| 3073 | |
| 3074 state = sw_value; | |
| 3075 break; | |
| 3076 | |
| 3077 case sw_value: | |
| 3078 ctx->value.len = ctx->field_huffman ? | |
| 3079 ctx->field_length * 8 / 5 : ctx->field_length; | |
| 3080 | |
| 3081 ctx->value.data = ngx_pnalloc(r->pool, ctx->value.len + 1); | |
| 3082 if (ctx->value.data == NULL) { | |
| 3083 return NGX_ERROR; | |
| 3084 } | |
| 3085 | |
| 3086 ctx->field_end = ctx->value.data; | |
| 3087 ctx->field_rest = ctx->field_length; | |
| 3088 ctx->field_state = 0; | |
| 3089 | |
| 3090 state = sw_value_bytes; | |
| 3091 | |
| 3092 /* fall through */ | |
| 3093 | |
| 3094 case sw_value_bytes: | |
| 3095 | |
| 3096 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3097 "grpc value: len:%uz h:%d last:%uz, rest:%uz", | |
| 3098 ctx->field_length, | |
| 3099 ctx->field_huffman, | |
| 3100 last - p, | |
| 3101 ctx->rest - (p - b->pos)); | |
| 3102 | |
| 3103 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
| 3104 ctx->field_rest -= size; | |
| 3105 | |
| 3106 if (ctx->field_huffman) { | |
| 3107 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
| 3108 &ctx->field_end, | |
| 3109 ctx->field_rest == 0, | |
| 3110 r->connection->log) | |
| 3111 != NGX_OK) | |
| 3112 { | |
| 3113 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3114 "upstream sent invalid encoded header"); | |
| 3115 return NGX_ERROR; | |
| 3116 } | |
| 3117 | |
| 3118 ctx->value.len = ctx->field_end - ctx->value.data; | |
| 3119 ctx->value.data[ctx->value.len] = '\0'; | |
| 3120 | |
| 3121 } else { | |
|
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3122 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
| 7233 | 3123 ctx->value.data[ctx->value.len] = '\0'; |
| 3124 } | |
| 3125 | |
| 3126 p += size - 1; | |
| 3127 | |
| 3128 if (ctx->field_rest == 0) { | |
| 3129 goto done; | |
| 3130 } | |
| 3131 | |
| 3132 break; | |
| 3133 } | |
| 3134 | |
| 3135 continue; | |
| 3136 | |
| 3137 done: | |
| 3138 | |
| 3139 p++; | |
| 3140 ctx->rest -= p - b->pos; | |
| 3141 ctx->fragment_state = sw_start; | |
| 3142 b->pos = p; | |
| 3143 | |
| 3144 if (ctx->index) { | |
| 3145 ctx->name = *ngx_http_v2_get_static_name(ctx->index); | |
| 3146 } | |
| 3147 | |
| 3148 if (ctx->index && !ctx->literal) { | |
| 3149 ctx->value = *ngx_http_v2_get_static_value(ctx->index); | |
| 3150 } | |
| 3151 | |
| 3152 if (!ctx->index) { | |
| 3153 if (ngx_http_grpc_validate_header_name(r, &ctx->name) != NGX_OK) { | |
| 3154 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3155 "upstream sent invalid header: \"%V: %V\"", | |
| 3156 &ctx->name, &ctx->value); | |
| 3157 return NGX_ERROR; | |
| 3158 } | |
| 3159 } | |
| 3160 | |
| 3161 if (!ctx->index || ctx->literal) { | |
| 3162 if (ngx_http_grpc_validate_header_value(r, &ctx->value) != NGX_OK) { | |
| 3163 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3164 "upstream sent invalid header: \"%V: %V\"", | |
| 3165 &ctx->name, &ctx->value); | |
| 3166 return NGX_ERROR; | |
| 3167 } | |
| 3168 } | |
| 3169 | |
| 3170 return NGX_OK; | |
| 3171 } | |
| 3172 | |
| 3173 ctx->rest -= p - b->pos; | |
| 3174 ctx->fragment_state = state; | |
| 3175 b->pos = p; | |
| 3176 | |
| 3177 if (ctx->rest > ctx->padding) { | |
| 3178 return NGX_AGAIN; | |
| 3179 } | |
| 3180 | |
| 3181 return NGX_DONE; | |
| 3182 } | |
| 3183 | |
| 3184 | |
| 3185 static ngx_int_t | |
| 3186 ngx_http_grpc_validate_header_name(ngx_http_request_t *r, ngx_str_t *s) | |
| 3187 { | |
| 3188 u_char ch; | |
| 3189 ngx_uint_t i; | |
| 3190 | |
| 3191 for (i = 0; i < s->len; i++) { | |
| 3192 ch = s->data[i]; | |
| 3193 | |
| 3194 if (ch == ':' && i > 0) { | |
| 3195 return NGX_ERROR; | |
| 3196 } | |
| 3197 | |
| 3198 if (ch >= 'A' && ch <= 'Z') { | |
| 3199 return NGX_ERROR; | |
| 3200 } | |
| 3201 | |
| 3202 if (ch == '\0' || ch == CR || ch == LF) { | |
| 3203 return NGX_ERROR; | |
| 3204 } | |
| 3205 } | |
| 3206 | |
| 3207 return NGX_OK; | |
| 3208 } | |
| 3209 | |
| 3210 | |
| 3211 static ngx_int_t | |
| 3212 ngx_http_grpc_validate_header_value(ngx_http_request_t *r, ngx_str_t *s) | |
| 3213 { | |
| 3214 u_char ch; | |
| 3215 ngx_uint_t i; | |
| 3216 | |
| 3217 for (i = 0; i < s->len; i++) { | |
| 3218 ch = s->data[i]; | |
| 3219 | |
| 3220 if (ch == '\0' || ch == CR || ch == LF) { | |
| 3221 return NGX_ERROR; | |
| 3222 } | |
| 3223 } | |
| 3224 | |
| 3225 return NGX_OK; | |
| 3226 } | |
| 3227 | |
| 3228 | |
| 3229 static ngx_int_t | |
| 3230 ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3231 ngx_buf_t *b) | |
| 3232 { | |
| 3233 u_char ch, *p, *last; | |
| 3234 enum { | |
| 3235 sw_start = 0, | |
| 3236 sw_error_2, | |
| 3237 sw_error_3, | |
| 3238 sw_error_4 | |
| 3239 } state; | |
| 3240 | |
| 3241 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3242 last = b->last; | |
| 3243 | |
| 3244 } else { | |
| 3245 last = b->pos + ctx->rest; | |
| 3246 } | |
| 3247 | |
| 3248 state = ctx->frame_state; | |
| 3249 | |
| 3250 if (state == sw_start) { | |
| 3251 if (ctx->rest != 4) { | |
| 3252 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3253 "upstream sent rst stream frame " | |
| 3254 "with invalid length: %uz", | |
| 3255 ctx->rest); | |
| 3256 return NGX_ERROR; | |
| 3257 } | |
| 3258 } | |
| 3259 | |
| 3260 for (p = b->pos; p < last; p++) { | |
| 3261 ch = *p; | |
| 3262 | |
| 3263 #if 0 | |
| 3264 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3265 "grpc rst byte: %02Xd s:%d", ch, state); | |
| 3266 #endif | |
| 3267 | |
| 3268 switch (state) { | |
| 3269 | |
| 3270 case sw_start: | |
|
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3271 ctx->error = (ngx_uint_t) ch << 24; |
| 7233 | 3272 state = sw_error_2; |
| 3273 break; | |
| 3274 | |
| 3275 case sw_error_2: | |
| 3276 ctx->error |= ch << 16; | |
| 3277 state = sw_error_3; | |
| 3278 break; | |
| 3279 | |
| 3280 case sw_error_3: | |
| 3281 ctx->error |= ch << 8; | |
| 3282 state = sw_error_4; | |
| 3283 break; | |
| 3284 | |
| 3285 case sw_error_4: | |
| 3286 ctx->error |= ch; | |
| 3287 state = sw_start; | |
| 3288 | |
| 3289 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3290 "grpc error: %ui", ctx->error); | |
| 3291 | |
| 3292 break; | |
| 3293 } | |
| 3294 } | |
| 3295 | |
| 3296 ctx->rest -= p - b->pos; | |
| 3297 ctx->frame_state = state; | |
| 3298 b->pos = p; | |
| 3299 | |
| 3300 if (ctx->rest > 0) { | |
| 3301 return NGX_AGAIN; | |
| 3302 } | |
| 3303 | |
| 3304 return NGX_OK; | |
| 3305 } | |
| 3306 | |
| 3307 | |
| 3308 static ngx_int_t | |
| 3309 ngx_http_grpc_parse_goaway(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3310 ngx_buf_t *b) | |
| 3311 { | |
| 3312 u_char ch, *p, *last; | |
| 3313 enum { | |
| 3314 sw_start = 0, | |
| 3315 sw_last_stream_id_2, | |
| 3316 sw_last_stream_id_3, | |
| 3317 sw_last_stream_id_4, | |
| 3318 sw_error, | |
| 3319 sw_error_2, | |
| 3320 sw_error_3, | |
| 3321 sw_error_4, | |
| 3322 sw_debug | |
| 3323 } state; | |
| 3324 | |
| 3325 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3326 last = b->last; | |
| 3327 | |
| 3328 } else { | |
| 3329 last = b->pos + ctx->rest; | |
| 3330 } | |
| 3331 | |
| 3332 state = ctx->frame_state; | |
| 3333 | |
| 3334 if (state == sw_start) { | |
| 3335 | |
| 3336 if (ctx->stream_id) { | |
| 3337 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3338 "upstream sent goaway frame " | |
| 3339 "with non-zero stream id: %ui", | |
| 3340 ctx->stream_id); | |
| 3341 return NGX_ERROR; | |
| 3342 } | |
| 3343 | |
| 3344 if (ctx->rest < 8) { | |
| 3345 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3346 "upstream sent goaway frame " | |
| 3347 "with invalid length: %uz", | |
| 3348 ctx->rest); | |
| 3349 return NGX_ERROR; | |
| 3350 } | |
| 3351 } | |
| 3352 | |
| 3353 for (p = b->pos; p < last; p++) { | |
| 3354 ch = *p; | |
| 3355 | |
| 3356 #if 0 | |
| 3357 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3358 "grpc goaway byte: %02Xd s:%d", ch, state); | |
| 3359 #endif | |
| 3360 | |
| 3361 switch (state) { | |
| 3362 | |
| 3363 case sw_start: | |
| 3364 ctx->stream_id = (ch & 0x7f) << 24; | |
| 3365 state = sw_last_stream_id_2; | |
| 3366 break; | |
| 3367 | |
| 3368 case sw_last_stream_id_2: | |
| 3369 ctx->stream_id |= ch << 16; | |
| 3370 state = sw_last_stream_id_3; | |
| 3371 break; | |
| 3372 | |
| 3373 case sw_last_stream_id_3: | |
| 3374 ctx->stream_id |= ch << 8; | |
| 3375 state = sw_last_stream_id_4; | |
| 3376 break; | |
| 3377 | |
| 3378 case sw_last_stream_id_4: | |
| 3379 ctx->stream_id |= ch; | |
| 3380 state = sw_error; | |
| 3381 break; | |
| 3382 | |
| 3383 case sw_error: | |
|
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3384 ctx->error = (ngx_uint_t) ch << 24; |
| 7233 | 3385 state = sw_error_2; |
| 3386 break; | |
| 3387 | |
| 3388 case sw_error_2: | |
| 3389 ctx->error |= ch << 16; | |
| 3390 state = sw_error_3; | |
| 3391 break; | |
| 3392 | |
| 3393 case sw_error_3: | |
| 3394 ctx->error |= ch << 8; | |
| 3395 state = sw_error_4; | |
| 3396 break; | |
| 3397 | |
| 3398 case sw_error_4: | |
| 3399 ctx->error |= ch; | |
| 3400 state = sw_debug; | |
| 3401 break; | |
| 3402 | |
| 3403 case sw_debug: | |
| 3404 break; | |
| 3405 } | |
| 3406 } | |
| 3407 | |
| 3408 ctx->rest -= p - b->pos; | |
| 3409 ctx->frame_state = state; | |
| 3410 b->pos = p; | |
| 3411 | |
| 3412 if (ctx->rest > 0) { | |
| 3413 return NGX_AGAIN; | |
| 3414 } | |
| 3415 | |
| 3416 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3417 "grpc goaway: %ui, stream %ui", | |
| 3418 ctx->error, ctx->stream_id); | |
| 3419 | |
| 3420 ctx->state = ngx_http_grpc_st_start; | |
| 3421 | |
| 3422 return NGX_OK; | |
| 3423 } | |
| 3424 | |
| 3425 | |
| 3426 static ngx_int_t | |
| 3427 ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
| 3428 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
| 3429 { | |
| 3430 u_char ch, *p, *last; | |
| 3431 enum { | |
| 3432 sw_start = 0, | |
| 3433 sw_size_2, | |
| 3434 sw_size_3, | |
| 3435 sw_size_4 | |
| 3436 } state; | |
| 3437 | |
| 3438 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3439 last = b->last; | |
| 3440 | |
| 3441 } else { | |
| 3442 last = b->pos + ctx->rest; | |
| 3443 } | |
| 3444 | |
| 3445 state = ctx->frame_state; | |
| 3446 | |
| 3447 if (state == sw_start) { | |
| 3448 if (ctx->rest != 4) { | |
| 3449 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3450 "upstream sent window update frame " | |
| 3451 "with invalid length: %uz", | |
| 3452 ctx->rest); | |
| 3453 return NGX_ERROR; | |
| 3454 } | |
| 3455 } | |
| 3456 | |
| 3457 for (p = b->pos; p < last; p++) { | |
| 3458 ch = *p; | |
| 3459 | |
| 3460 #if 0 | |
| 3461 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3462 "grpc window update byte: %02Xd s:%d", ch, state); | |
| 3463 #endif | |
| 3464 | |
| 3465 switch (state) { | |
| 3466 | |
| 3467 case sw_start: | |
| 3468 ctx->window_update = (ch & 0x7f) << 24; | |
| 3469 state = sw_size_2; | |
| 3470 break; | |
| 3471 | |
| 3472 case sw_size_2: | |
| 3473 ctx->window_update |= ch << 16; | |
| 3474 state = sw_size_3; | |
| 3475 break; | |
| 3476 | |
| 3477 case sw_size_3: | |
| 3478 ctx->window_update |= ch << 8; | |
| 3479 state = sw_size_4; | |
| 3480 break; | |
| 3481 | |
| 3482 case sw_size_4: | |
| 3483 ctx->window_update |= ch; | |
| 3484 state = sw_start; | |
| 3485 break; | |
| 3486 } | |
| 3487 } | |
| 3488 | |
| 3489 ctx->rest -= p - b->pos; | |
| 3490 ctx->frame_state = state; | |
| 3491 b->pos = p; | |
| 3492 | |
| 3493 if (ctx->rest > 0) { | |
| 3494 return NGX_AGAIN; | |
| 3495 } | |
| 3496 | |
| 3497 ctx->state = ngx_http_grpc_st_start; | |
| 3498 | |
| 3499 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3500 "grpc window update: %ui", ctx->window_update); | |
| 3501 | |
| 3502 if (ctx->stream_id) { | |
| 3503 | |
| 3504 if (ctx->window_update > (size_t) NGX_HTTP_V2_MAX_WINDOW | |
| 3505 - ctx->send_window) | |
| 3506 { | |
| 3507 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3508 "upstream sent too large window update"); | |
| 3509 return NGX_ERROR; | |
| 3510 } | |
| 3511 | |
| 3512 ctx->send_window += ctx->window_update; | |
| 3513 | |
| 3514 } else { | |
| 3515 | |
| 3516 if (ctx->window_update > NGX_HTTP_V2_MAX_WINDOW | |
| 3517 - ctx->connection->send_window) | |
| 3518 { | |
| 3519 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3520 "upstream sent too large window update"); | |
| 3521 return NGX_ERROR; | |
| 3522 } | |
| 3523 | |
| 3524 ctx->connection->send_window += ctx->window_update; | |
| 3525 } | |
| 3526 | |
| 3527 return NGX_OK; | |
| 3528 } | |
| 3529 | |
| 3530 | |
| 3531 static ngx_int_t | |
| 3532 ngx_http_grpc_parse_settings(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3533 ngx_buf_t *b) | |
| 3534 { | |
| 3535 u_char ch, *p, *last; | |
| 3536 ssize_t window_update; | |
| 3537 enum { | |
| 3538 sw_start = 0, | |
| 3539 sw_id, | |
| 3540 sw_id_2, | |
| 3541 sw_value, | |
| 3542 sw_value_2, | |
| 3543 sw_value_3, | |
| 3544 sw_value_4 | |
| 3545 } state; | |
| 3546 | |
| 3547 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3548 last = b->last; | |
| 3549 | |
| 3550 } else { | |
| 3551 last = b->pos + ctx->rest; | |
| 3552 } | |
| 3553 | |
| 3554 state = ctx->frame_state; | |
| 3555 | |
| 3556 if (state == sw_start) { | |
| 3557 | |
| 3558 if (ctx->stream_id) { | |
| 3559 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3560 "upstream sent settings frame " | |
| 3561 "with non-zero stream id: %ui", | |
| 3562 ctx->stream_id); | |
| 3563 return NGX_ERROR; | |
| 3564 } | |
| 3565 | |
| 3566 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
| 3567 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3568 "grpc settings ack"); | |
| 3569 | |
| 3570 if (ctx->rest != 0) { | |
| 3571 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3572 "upstream sent settings frame " | |
| 3573 "with ack flag and non-zero length: %uz", | |
| 3574 ctx->rest); | |
| 3575 return NGX_ERROR; | |
| 3576 } | |
| 3577 | |
| 3578 ctx->state = ngx_http_grpc_st_start; | |
| 3579 | |
| 3580 return NGX_OK; | |
| 3581 } | |
| 3582 | |
| 3583 if (ctx->rest % 6 != 0) { | |
| 3584 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3585 "upstream sent settings frame " | |
| 3586 "with invalid length: %uz", | |
| 3587 ctx->rest); | |
| 3588 return NGX_ERROR; | |
| 3589 } | |
|
7379
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3590 |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3591 if (ctx->free == NULL && ctx->settings++ > 1000) { |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3592 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3593 "upstream sent too many settings frames"); |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3594 return NGX_ERROR; |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3595 } |
| 7233 | 3596 } |
| 3597 | |
| 3598 for (p = b->pos; p < last; p++) { | |
| 3599 ch = *p; | |
| 3600 | |
| 3601 #if 0 | |
| 3602 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3603 "grpc settings byte: %02Xd s:%d", ch, state); | |
| 3604 #endif | |
| 3605 | |
| 3606 switch (state) { | |
| 3607 | |
| 3608 case sw_start: | |
| 3609 case sw_id: | |
| 3610 ctx->setting_id = ch << 8; | |
| 3611 state = sw_id_2; | |
| 3612 break; | |
| 3613 | |
| 3614 case sw_id_2: | |
| 3615 ctx->setting_id |= ch; | |
| 3616 state = sw_value; | |
| 3617 break; | |
| 3618 | |
| 3619 case sw_value: | |
|
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3620 ctx->setting_value = (ngx_uint_t) ch << 24; |
| 7233 | 3621 state = sw_value_2; |
| 3622 break; | |
| 3623 | |
| 3624 case sw_value_2: | |
| 3625 ctx->setting_value |= ch << 16; | |
| 3626 state = sw_value_3; | |
| 3627 break; | |
| 3628 | |
| 3629 case sw_value_3: | |
| 3630 ctx->setting_value |= ch << 8; | |
| 3631 state = sw_value_4; | |
| 3632 break; | |
| 3633 | |
| 3634 case sw_value_4: | |
| 3635 ctx->setting_value |= ch; | |
| 3636 state = sw_id; | |
| 3637 | |
| 3638 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3639 "grpc setting: %ui %ui", | |
| 3640 ctx->setting_id, ctx->setting_value); | |
| 3641 | |
| 3642 /* | |
| 3643 * The following settings are defined by the protocol: | |
| 3644 * | |
| 3645 * SETTINGS_HEADER_TABLE_SIZE, SETTINGS_ENABLE_PUSH, | |
| 3646 * SETTINGS_MAX_CONCURRENT_STREAMS, SETTINGS_INITIAL_WINDOW_SIZE, | |
| 3647 * SETTINGS_MAX_FRAME_SIZE, SETTINGS_MAX_HEADER_LIST_SIZE | |
| 3648 * | |
| 3649 * Only SETTINGS_INITIAL_WINDOW_SIZE seems to be needed in | |
| 3650 * a simple client. | |
| 3651 */ | |
| 3652 | |
| 3653 if (ctx->setting_id == 0x04) { | |
| 3654 /* SETTINGS_INITIAL_WINDOW_SIZE */ | |
| 3655 | |
| 3656 if (ctx->setting_value > NGX_HTTP_V2_MAX_WINDOW) { | |
| 3657 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3658 "upstream sent settings frame " | |
| 3659 "with too large initial window size: %ui", | |
| 3660 ctx->setting_value); | |
| 3661 return NGX_ERROR; | |
| 3662 } | |
| 3663 | |
| 3664 window_update = ctx->setting_value | |
| 3665 - ctx->connection->init_window; | |
| 3666 ctx->connection->init_window = ctx->setting_value; | |
| 3667 | |
| 3668 if (ctx->send_window > 0 | |
| 3669 && window_update > (ssize_t) NGX_HTTP_V2_MAX_WINDOW | |
| 3670 - ctx->send_window) | |
| 3671 { | |
| 3672 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3673 "upstream sent settings frame " | |
| 3674 "with too large initial window size: %ui", | |
| 3675 ctx->setting_value); | |
| 3676 return NGX_ERROR; | |
| 3677 } | |
| 3678 | |
| 3679 ctx->send_window += window_update; | |
| 3680 } | |
| 3681 | |
| 3682 break; | |
| 3683 } | |
| 3684 } | |
| 3685 | |
| 3686 ctx->rest -= p - b->pos; | |
| 3687 ctx->frame_state = state; | |
| 3688 b->pos = p; | |
| 3689 | |
| 3690 if (ctx->rest > 0) { | |
| 3691 return NGX_AGAIN; | |
| 3692 } | |
| 3693 | |
| 3694 ctx->state = ngx_http_grpc_st_start; | |
| 3695 | |
| 3696 return ngx_http_grpc_send_settings_ack(r, ctx); | |
| 3697 } | |
| 3698 | |
| 3699 | |
| 3700 static ngx_int_t | |
| 3701 ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
| 3702 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
| 3703 { | |
| 3704 u_char ch, *p, *last; | |
| 3705 enum { | |
| 3706 sw_start = 0, | |
| 3707 sw_data_2, | |
| 3708 sw_data_3, | |
| 3709 sw_data_4, | |
| 3710 sw_data_5, | |
| 3711 sw_data_6, | |
| 3712 sw_data_7, | |
| 3713 sw_data_8 | |
| 3714 } state; | |
| 3715 | |
| 3716 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3717 last = b->last; | |
| 3718 | |
| 3719 } else { | |
| 3720 last = b->pos + ctx->rest; | |
| 3721 } | |
| 3722 | |
| 3723 state = ctx->frame_state; | |
| 3724 | |
| 3725 if (state == sw_start) { | |
| 3726 | |
| 3727 if (ctx->stream_id) { | |
| 3728 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3729 "upstream sent ping frame " | |
| 3730 "with non-zero stream id: %ui", | |
| 3731 ctx->stream_id); | |
| 3732 return NGX_ERROR; | |
| 3733 } | |
| 3734 | |
| 3735 if (ctx->rest != 8) { | |
| 3736 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3737 "upstream sent ping frame " | |
| 3738 "with invalid length: %uz", | |
| 3739 ctx->rest); | |
| 3740 return NGX_ERROR; | |
| 3741 } | |
| 3742 | |
| 3743 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
| 3744 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3745 "upstream sent ping frame with ack flag"); | |
| 3746 return NGX_ERROR; | |
| 3747 } | |
|
7379
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3748 |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3749 if (ctx->free == NULL && ctx->pings++ > 1000) { |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3750 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3751 "upstream sent too many ping frames"); |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3752 return NGX_ERROR; |
|
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3753 } |
| 7233 | 3754 } |
| 3755 | |
| 3756 for (p = b->pos; p < last; p++) { | |
| 3757 ch = *p; | |
| 3758 | |
| 3759 #if 0 | |
| 3760 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3761 "grpc ping byte: %02Xd s:%d", ch, state); | |
| 3762 #endif | |
| 3763 | |
| 3764 if (state < sw_data_8) { | |
| 3765 ctx->ping_data[state] = ch; | |
| 3766 state++; | |
| 3767 | |
| 3768 } else { | |
| 3769 ctx->ping_data[7] = ch; | |
| 3770 state = sw_start; | |
| 3771 | |
| 3772 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3773 "grpc ping"); | |
| 3774 } | |
| 3775 } | |
| 3776 | |
| 3777 ctx->rest -= p - b->pos; | |
| 3778 ctx->frame_state = state; | |
| 3779 b->pos = p; | |
| 3780 | |
| 3781 if (ctx->rest > 0) { | |
| 3782 return NGX_AGAIN; | |
| 3783 } | |
| 3784 | |
| 3785 ctx->state = ngx_http_grpc_st_start; | |
| 3786 | |
| 3787 return ngx_http_grpc_send_ping_ack(r, ctx); | |
| 3788 } | |
| 3789 | |
| 3790 | |
| 3791 static ngx_int_t | |
| 3792 ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3793 { | |
| 3794 ngx_chain_t *cl, **ll; | |
| 3795 ngx_http_grpc_frame_t *f; | |
| 3796 | |
| 3797 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3798 "grpc send settings ack"); | |
| 3799 | |
| 3800 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3801 ll = &cl->next; | |
| 3802 } | |
| 3803 | |
| 3804 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3805 if (cl == NULL) { | |
| 3806 return NGX_ERROR; | |
| 3807 } | |
| 3808 | |
| 3809 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3810 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3811 | |
| 3812 f->length_0 = 0; | |
| 3813 f->length_1 = 0; | |
| 3814 f->length_2 = 0; | |
| 3815 f->type = NGX_HTTP_V2_SETTINGS_FRAME; | |
| 3816 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
| 3817 f->stream_id_0 = 0; | |
| 3818 f->stream_id_1 = 0; | |
| 3819 f->stream_id_2 = 0; | |
| 3820 f->stream_id_3 = 0; | |
| 3821 | |
| 3822 *ll = cl; | |
| 3823 | |
| 3824 return NGX_OK; | |
| 3825 } | |
| 3826 | |
| 3827 | |
| 3828 static ngx_int_t | |
| 3829 ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3830 { | |
| 3831 ngx_chain_t *cl, **ll; | |
| 3832 ngx_http_grpc_frame_t *f; | |
| 3833 | |
| 3834 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3835 "grpc send ping ack"); | |
| 3836 | |
| 3837 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3838 ll = &cl->next; | |
| 3839 } | |
| 3840 | |
| 3841 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3842 if (cl == NULL) { | |
| 3843 return NGX_ERROR; | |
| 3844 } | |
| 3845 | |
| 3846 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3847 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3848 | |
| 3849 f->length_0 = 0; | |
| 3850 f->length_1 = 0; | |
| 3851 f->length_2 = 8; | |
| 3852 f->type = NGX_HTTP_V2_PING_FRAME; | |
| 3853 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
| 3854 f->stream_id_0 = 0; | |
| 3855 f->stream_id_1 = 0; | |
| 3856 f->stream_id_2 = 0; | |
| 3857 f->stream_id_3 = 0; | |
| 3858 | |
| 3859 cl->buf->last = ngx_copy(cl->buf->last, ctx->ping_data, 8); | |
| 3860 | |
| 3861 *ll = cl; | |
| 3862 | |
| 3863 return NGX_OK; | |
| 3864 } | |
| 3865 | |
| 3866 | |
| 3867 static ngx_int_t | |
| 3868 ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
| 3869 ngx_http_grpc_ctx_t *ctx) | |
| 3870 { | |
| 3871 size_t n; | |
| 3872 ngx_chain_t *cl, **ll; | |
| 3873 ngx_http_grpc_frame_t *f; | |
| 3874 | |
| 3875 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3876 "grpc send window update: %uz %uz", | |
| 3877 ctx->connection->recv_window, ctx->recv_window); | |
| 3878 | |
| 3879 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3880 ll = &cl->next; | |
| 3881 } | |
| 3882 | |
| 3883 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3884 if (cl == NULL) { | |
| 3885 return NGX_ERROR; | |
| 3886 } | |
| 3887 | |
| 3888 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3889 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3890 | |
| 3891 f->length_0 = 0; | |
| 3892 f->length_1 = 0; | |
| 3893 f->length_2 = 4; | |
| 3894 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
| 3895 f->flags = 0; | |
| 3896 f->stream_id_0 = 0; | |
| 3897 f->stream_id_1 = 0; | |
| 3898 f->stream_id_2 = 0; | |
| 3899 f->stream_id_3 = 0; | |
| 3900 | |
| 3901 n = NGX_HTTP_V2_MAX_WINDOW - ctx->connection->recv_window; | |
| 3902 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3903 | |
| 3904 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
| 3905 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
| 3906 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
| 3907 *cl->buf->last++ = (u_char) (n & 0xff); | |
| 3908 | |
| 3909 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3910 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3911 | |
| 3912 f->length_0 = 0; | |
| 3913 f->length_1 = 0; | |
| 3914 f->length_2 = 4; | |
| 3915 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
| 3916 f->flags = 0; | |
| 3917 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 3918 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 3919 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 3920 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 3921 | |
| 3922 n = NGX_HTTP_V2_MAX_WINDOW - ctx->recv_window; | |
| 3923 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3924 | |
| 3925 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
| 3926 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
| 3927 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
| 3928 *cl->buf->last++ = (u_char) (n & 0xff); | |
| 3929 | |
| 3930 *ll = cl; | |
| 3931 | |
| 3932 return NGX_OK; | |
| 3933 } | |
| 3934 | |
| 3935 | |
| 3936 static ngx_chain_t * | |
| 3937 ngx_http_grpc_get_buf(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3938 { | |
|
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3939 u_char *start; |
| 7233 | 3940 ngx_buf_t *b; |
| 3941 ngx_chain_t *cl; | |
| 3942 | |
| 3943 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
| 3944 if (cl == NULL) { | |
| 3945 return NULL; | |
| 3946 } | |
| 3947 | |
| 3948 b = cl->buf; | |
|
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3949 start = b->start; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3950 |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3951 if (start == NULL) { |
| 7233 | 3952 |
| 3953 /* | |
| 3954 * each buffer is large enough to hold two window update | |
| 3955 * frames in a row | |
| 3956 */ | |
| 3957 | |
|
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3958 start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8); |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3959 if (start == NULL) { |
| 7233 | 3960 return NULL; |
| 3961 } | |
| 3962 | |
| 3963 } | |
| 3964 | |
|
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
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diff
changeset
|
3965 ngx_memzero(b, sizeof(ngx_buf_t)); |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3966 |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3967 b->start = start; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3968 b->pos = start; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3969 b->last = start; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3970 b->end = start + 2 * sizeof(ngx_http_grpc_frame_t) + 8; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3971 |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3972 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3973 b->temporary = 1; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
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7271
diff
changeset
|
3974 b->flush = 1; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
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diff
changeset
|
3975 |
| 7233 | 3976 return cl; |
| 3977 } | |
| 3978 | |
| 3979 | |
| 3980 static ngx_http_grpc_ctx_t * | |
| 3981 ngx_http_grpc_get_ctx(ngx_http_request_t *r) | |
| 3982 { | |
| 3983 ngx_http_grpc_ctx_t *ctx; | |
| 3984 ngx_http_upstream_t *u; | |
| 3985 | |
| 3986 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
| 3987 | |
| 3988 if (ctx->connection == NULL) { | |
| 3989 u = r->upstream; | |
| 3990 | |
| 3991 if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) { | |
| 3992 return NULL; | |
| 3993 } | |
| 3994 } | |
| 3995 | |
| 3996 return ctx; | |
| 3997 } | |
| 3998 | |
| 3999 | |
| 4000 static ngx_int_t | |
| 4001 ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
| 4002 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc) | |
| 4003 { | |
| 4004 ngx_connection_t *c; | |
| 4005 ngx_pool_cleanup_t *cln; | |
| 4006 | |
| 4007 c = pc->connection; | |
| 4008 | |
| 4009 if (pc->cached) { | |
| 4010 | |
| 4011 /* | |
| 4012 * for cached connections, connection data can be found | |
| 4013 * in the cleanup handler | |
| 4014 */ | |
| 4015 | |
| 4016 for (cln = c->pool->cleanup; cln; cln = cln->next) { | |
| 4017 if (cln->handler == ngx_http_grpc_cleanup) { | |
| 4018 ctx->connection = cln->data; | |
| 4019 break; | |
| 4020 } | |
| 4021 } | |
| 4022 | |
| 4023 if (ctx->connection == NULL) { | |
| 4024 ngx_log_error(NGX_LOG_ERR, c->log, 0, | |
| 4025 "no connection data found for " | |
| 4026 "keepalive http2 connection"); | |
| 4027 return NGX_ERROR; | |
| 4028 } | |
| 4029 | |
| 4030 ctx->send_window = ctx->connection->init_window; | |
| 4031 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 4032 | |
| 4033 ctx->connection->last_stream_id += 2; | |
| 4034 ctx->id = ctx->connection->last_stream_id; | |
| 4035 | |
| 4036 return NGX_OK; | |
| 4037 } | |
| 4038 | |
| 4039 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t)); | |
| 4040 if (cln == NULL) { | |
| 4041 return NGX_ERROR; | |
| 4042 } | |
| 4043 | |
| 4044 cln->handler = ngx_http_grpc_cleanup; | |
| 4045 ctx->connection = cln->data; | |
| 4046 | |
| 4047 ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 4048 ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 4049 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 4050 | |
| 4051 ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 4052 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 4053 | |
| 4054 ctx->id = 1; | |
| 4055 ctx->connection->last_stream_id = 1; | |
| 4056 | |
| 4057 return NGX_OK; | |
| 4058 } | |
| 4059 | |
| 4060 | |
| 4061 static void | |
| 4062 ngx_http_grpc_cleanup(void *data) | |
| 4063 { | |
| 4064 #if 0 | |
| 4065 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 4066 "grpc cleanup"); | |
| 4067 #endif | |
| 4068 return; | |
| 4069 } | |
| 4070 | |
| 4071 | |
| 4072 static void | |
| 4073 ngx_http_grpc_abort_request(ngx_http_request_t *r) | |
| 4074 { | |
| 4075 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 4076 "abort grpc request"); | |
| 4077 return; | |
| 4078 } | |
| 4079 | |
| 4080 | |
| 4081 static void | |
| 4082 ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
| 4083 { | |
| 4084 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 4085 "finalize grpc request"); | |
| 4086 return; | |
| 4087 } | |
| 4088 | |
| 4089 | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4090 static ngx_int_t |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4091 ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4092 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
|
4093 { |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4094 ngx_table_elt_t *te; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4095 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4096 te = r->headers_in.te; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4097 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4098 if (te == NULL) { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4099 v->not_found = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4100 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4101 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4102 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4103 if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4104 (u_char *) "trailers", 8 - 1) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4105 == NULL) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4106 { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4107 v->not_found = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4108 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4109 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4110 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4111 v->valid = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4112 v->no_cacheable = 0; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4113 v->not_found = 0; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4114 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4115 v->data = (u_char *) "trailers"; |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4116 v->len = sizeof("trailers") - 1; |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4117 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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diff
changeset
|
4118 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4119 } |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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diff
changeset
|
4120 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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diff
changeset
|
4121 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4122 static ngx_int_t |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4123 ngx_http_grpc_add_variables(ngx_conf_t *cf) |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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|
4124 { |
|
c693daca57f7
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diff
changeset
|
4125 ngx_http_variable_t *var, *v; |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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|
4126 |
|
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diff
changeset
|
4127 for (v = ngx_http_grpc_vars; v->name.len; v++) { |
|
c693daca57f7
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diff
changeset
|
4128 var = ngx_http_add_variable(cf, &v->name, v->flags); |
|
c693daca57f7
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7233
diff
changeset
|
4129 if (var == NULL) { |
|
c693daca57f7
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diff
changeset
|
4130 return NGX_ERROR; |
|
c693daca57f7
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7233
diff
changeset
|
4131 } |
|
c693daca57f7
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7233
diff
changeset
|
4132 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4133 var->get_handler = v->get_handler; |
|
c693daca57f7
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7233
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changeset
|
4134 var->data = v->data; |
|
c693daca57f7
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7233
diff
changeset
|
4135 } |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4136 |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
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7233
diff
changeset
|
4137 return NGX_OK; |
|
c693daca57f7
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7233
diff
changeset
|
4138 } |
|
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4139 |
|
c693daca57f7
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7233
diff
changeset
|
4140 |
| 7233 | 4141 static void * |
| 4142 ngx_http_grpc_create_loc_conf(ngx_conf_t *cf) | |
| 4143 { | |
| 4144 ngx_http_grpc_loc_conf_t *conf; | |
| 4145 | |
| 4146 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t)); | |
| 4147 if (conf == NULL) { | |
| 4148 return NULL; | |
| 4149 } | |
| 4150 | |
| 4151 /* | |
| 4152 * set by ngx_pcalloc(): | |
| 4153 * | |
| 4154 * conf->upstream.ignore_headers = 0; | |
| 4155 * conf->upstream.next_upstream = 0; | |
| 4156 * conf->upstream.hide_headers_hash = { NULL, 0 }; | |
| 4157 * conf->upstream.ssl_name = NULL; | |
| 4158 * | |
| 4159 * conf->headers_source = NULL; | |
| 4160 * conf->headers.lengths = NULL; | |
| 4161 * conf->headers.values = NULL; | |
| 4162 * conf->headers.hash = { NULL, 0 }; | |
| 4163 * conf->host = { 0, NULL }; | |
| 4164 * conf->host_set = 0; | |
| 4165 * conf->ssl = 0; | |
| 4166 * conf->ssl_protocols = 0; | |
| 4167 * conf->ssl_ciphers = { 0, NULL }; | |
| 4168 * conf->ssl_trusted_certificate = { 0, NULL }; | |
| 4169 * conf->ssl_crl = { 0, NULL }; | |
| 4170 * conf->ssl_certificate = { 0, NULL }; | |
| 4171 * conf->ssl_certificate_key = { 0, NULL }; | |
| 4172 */ | |
| 4173 | |
| 4174 conf->upstream.local = NGX_CONF_UNSET_PTR; | |
|
7371
8b68d50090e4
Upstream: proxy_socket_keepalive and friends.
Vladimir Homutov <vl@nginx.com>
parents:
7350
diff
changeset
|
4175 conf->upstream.socket_keepalive = NGX_CONF_UNSET; |
| 7233 | 4176 conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; |
| 4177 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
| 4178 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
| 4179 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
| 4180 conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
| 4181 | |
| 4182 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
| 4183 | |
| 4184 conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; | |
| 4185 conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; | |
| 4186 | |
| 4187 conf->upstream.intercept_errors = NGX_CONF_UNSET; | |
| 4188 | |
| 4189 #if (NGX_HTTP_SSL) | |
| 4190 conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; | |
| 4191 conf->upstream.ssl_server_name = NGX_CONF_UNSET; | |
| 4192 conf->upstream.ssl_verify = NGX_CONF_UNSET; | |
| 4193 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
| 4194 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
| 4195 #endif | |
| 4196 | |
| 4197 /* the hardcoded values */ | |
| 4198 conf->upstream.cyclic_temp_file = 0; | |
| 4199 conf->upstream.buffering = 0; | |
| 4200 conf->upstream.ignore_client_abort = 0; | |
| 4201 conf->upstream.send_lowat = 0; | |
| 4202 conf->upstream.bufs.num = 0; | |
| 4203 conf->upstream.busy_buffers_size = 0; | |
| 4204 conf->upstream.max_temp_file_size = 0; | |
| 4205 conf->upstream.temp_file_write_size = 0; | |
| 4206 conf->upstream.pass_request_headers = 1; | |
| 4207 conf->upstream.pass_request_body = 1; | |
| 4208 conf->upstream.force_ranges = 0; | |
| 4209 conf->upstream.pass_trailers = 1; | |
| 4210 conf->upstream.preserve_output = 1; | |
| 4211 | |
| 4212 ngx_str_set(&conf->upstream.module, "grpc"); | |
| 4213 | |
| 4214 return conf; | |
| 4215 } | |
| 4216 | |
| 4217 | |
| 4218 static char * | |
| 4219 ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 4220 { | |
| 4221 ngx_http_grpc_loc_conf_t *prev = parent; | |
| 4222 ngx_http_grpc_loc_conf_t *conf = child; | |
| 4223 | |
| 4224 ngx_int_t rc; | |
| 4225 ngx_hash_init_t hash; | |
| 4226 ngx_http_core_loc_conf_t *clcf; | |
| 4227 | |
| 4228 ngx_conf_merge_ptr_value(conf->upstream.local, | |
| 4229 prev->upstream.local, NULL); | |
| 4230 | |
|
7371
8b68d50090e4
Upstream: proxy_socket_keepalive and friends.
Vladimir Homutov <vl@nginx.com>
parents:
7350
diff
changeset
|
4231 ngx_conf_merge_value(conf->upstream.socket_keepalive, |
|
8b68d50090e4
Upstream: proxy_socket_keepalive and friends.
Vladimir Homutov <vl@nginx.com>
parents:
7350
diff
changeset
|
4232 prev->upstream.socket_keepalive, 0); |
|
8b68d50090e4
Upstream: proxy_socket_keepalive and friends.
Vladimir Homutov <vl@nginx.com>
parents:
7350
diff
changeset
|
4233 |
| 7233 | 4234 ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, |
| 4235 prev->upstream.next_upstream_tries, 0); | |
| 4236 | |
| 4237 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
| 4238 prev->upstream.connect_timeout, 60000); | |
| 4239 | |
| 4240 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
| 4241 prev->upstream.send_timeout, 60000); | |
| 4242 | |
| 4243 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
| 4244 prev->upstream.read_timeout, 60000); | |
| 4245 | |
| 4246 ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, | |
| 4247 prev->upstream.next_upstream_timeout, 0); | |
| 4248 | |
| 4249 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
| 4250 prev->upstream.buffer_size, | |
| 4251 (size_t) ngx_pagesize); | |
| 4252 | |
| 4253 ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, | |
| 4254 prev->upstream.ignore_headers, | |
| 4255 NGX_CONF_BITMASK_SET); | |
| 4256 | |
| 4257 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
| 4258 prev->upstream.next_upstream, | |
| 4259 (NGX_CONF_BITMASK_SET | |
| 4260 |NGX_HTTP_UPSTREAM_FT_ERROR | |
| 4261 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
| 4262 | |
| 4263 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { | |
| 4264 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
| 4265 |NGX_HTTP_UPSTREAM_FT_OFF; | |
| 4266 } | |
| 4267 | |
| 4268 ngx_conf_merge_value(conf->upstream.intercept_errors, | |
| 4269 prev->upstream.intercept_errors, 0); | |
| 4270 | |
| 4271 #if (NGX_HTTP_SSL) | |
| 4272 | |
| 4273 ngx_conf_merge_value(conf->upstream.ssl_session_reuse, | |
| 4274 prev->upstream.ssl_session_reuse, 1); | |
| 4275 | |
| 4276 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
| 4277 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 | |
| 4278 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); | |
| 4279 | |
| 4280 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, | |
| 4281 "DEFAULT"); | |
| 4282 | |
| 4283 if (conf->upstream.ssl_name == NULL) { | |
| 4284 conf->upstream.ssl_name = prev->upstream.ssl_name; | |
| 4285 } | |
| 4286 | |
| 4287 ngx_conf_merge_value(conf->upstream.ssl_server_name, | |
| 4288 prev->upstream.ssl_server_name, 0); | |
| 4289 ngx_conf_merge_value(conf->upstream.ssl_verify, | |
| 4290 prev->upstream.ssl_verify, 0); | |
| 4291 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
| 4292 prev->ssl_verify_depth, 1); | |
| 4293 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
| 4294 prev->ssl_trusted_certificate, ""); | |
| 4295 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
| 4296 | |
| 4297 ngx_conf_merge_str_value(conf->ssl_certificate, | |
| 4298 prev->ssl_certificate, ""); | |
| 4299 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
| 4300 prev->ssl_certificate_key, ""); | |
| 4301 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
| 4302 | |
| 4303 if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) { | |
| 4304 return NGX_CONF_ERROR; | |
| 4305 } | |
| 4306 | |
| 4307 #endif | |
| 4308 | |
| 4309 hash.max_size = 512; | |
| 4310 hash.bucket_size = ngx_align(64, ngx_cacheline_size); | |
| 4311 hash.name = "grpc_headers_hash"; | |
| 4312 | |
| 4313 if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, | |
| 4314 &prev->upstream, ngx_http_grpc_hide_headers, &hash) | |
| 4315 != NGX_OK) | |
| 4316 { | |
| 4317 return NGX_CONF_ERROR; | |
| 4318 } | |
| 4319 | |
| 4320 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 4321 | |
| 4322 if (clcf->noname && conf->upstream.upstream == NULL) { | |
| 4323 conf->upstream.upstream = prev->upstream.upstream; | |
| 4324 conf->host = prev->host; | |
| 4325 #if (NGX_HTTP_SSL) | |
| 4326 conf->upstream.ssl = prev->upstream.ssl; | |
| 4327 #endif | |
| 4328 } | |
| 4329 | |
| 4330 if (clcf->lmt_excpt && clcf->handler == NULL && conf->upstream.upstream) { | |
| 4331 clcf->handler = ngx_http_grpc_handler; | |
| 4332 } | |
| 4333 | |
| 4334 if (conf->headers_source == NULL) { | |
| 4335 conf->headers = prev->headers; | |
| 4336 conf->headers_source = prev->headers_source; | |
| 4337 conf->host_set = prev->host_set; | |
| 4338 } | |
| 4339 | |
| 4340 rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers, | |
| 4341 ngx_http_grpc_headers); | |
| 4342 if (rc != NGX_OK) { | |
| 4343 return NGX_CONF_ERROR; | |
| 4344 } | |
| 4345 | |
| 4346 /* | |
| 4347 * special handling to preserve conf->headers in the "http" section | |
| 4348 * to inherit it to all servers | |
| 4349 */ | |
| 4350 | |
| 4351 if (prev->headers.hash.buckets == NULL | |
| 4352 && conf->headers_source == prev->headers_source) | |
| 4353 { | |
| 4354 prev->headers = conf->headers; | |
| 4355 prev->host_set = conf->host_set; | |
| 4356 } | |
| 4357 | |
| 4358 return NGX_CONF_OK; | |
| 4359 } | |
| 4360 | |
| 4361 | |
| 4362 static ngx_int_t | |
| 4363 ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf, | |
| 4364 ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers) | |
| 4365 { | |
| 4366 u_char *p; | |
| 4367 size_t size; | |
| 4368 uintptr_t *code; | |
| 4369 ngx_uint_t i; | |
| 4370 ngx_array_t headers_names, headers_merged; | |
| 4371 ngx_keyval_t *src, *s, *h; | |
| 4372 ngx_hash_key_t *hk; | |
| 4373 ngx_hash_init_t hash; | |
| 4374 ngx_http_script_compile_t sc; | |
| 4375 ngx_http_script_copy_code_t *copy; | |
| 4376 | |
| 4377 if (headers->hash.buckets) { | |
| 4378 return NGX_OK; | |
| 4379 } | |
| 4380 | |
| 4381 if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) | |
| 4382 != NGX_OK) | |
| 4383 { | |
| 4384 return NGX_ERROR; | |
| 4385 } | |
| 4386 | |
| 4387 if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) | |
| 4388 != NGX_OK) | |
| 4389 { | |
| 4390 return NGX_ERROR; | |
| 4391 } | |
| 4392 | |
| 4393 headers->lengths = ngx_array_create(cf->pool, 64, 1); | |
| 4394 if (headers->lengths == NULL) { | |
| 4395 return NGX_ERROR; | |
| 4396 } | |
| 4397 | |
| 4398 headers->values = ngx_array_create(cf->pool, 512, 1); | |
| 4399 if (headers->values == NULL) { | |
| 4400 return NGX_ERROR; | |
| 4401 } | |
| 4402 | |
| 4403 if (conf->headers_source) { | |
| 4404 | |
| 4405 src = conf->headers_source->elts; | |
| 4406 for (i = 0; i < conf->headers_source->nelts; i++) { | |
| 4407 | |
| 4408 if (src[i].key.len == 4 | |
| 4409 && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0) | |
| 4410 { | |
| 4411 conf->host_set = 1; | |
| 4412 } | |
| 4413 | |
| 4414 s = ngx_array_push(&headers_merged); | |
| 4415 if (s == NULL) { | |
| 4416 return NGX_ERROR; | |
| 4417 } | |
| 4418 | |
| 4419 *s = src[i]; | |
| 4420 } | |
| 4421 } | |
| 4422 | |
| 4423 h = default_headers; | |
| 4424 | |
| 4425 while (h->key.len) { | |
| 4426 | |
| 4427 src = headers_merged.elts; | |
| 4428 for (i = 0; i < headers_merged.nelts; i++) { | |
| 4429 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { | |
| 4430 goto next; | |
| 4431 } | |
| 4432 } | |
| 4433 | |
| 4434 s = ngx_array_push(&headers_merged); | |
| 4435 if (s == NULL) { | |
| 4436 return NGX_ERROR; | |
| 4437 } | |
| 4438 | |
| 4439 *s = *h; | |
| 4440 | |
| 4441 next: | |
| 4442 | |
| 4443 h++; | |
| 4444 } | |
| 4445 | |
| 4446 | |
| 4447 src = headers_merged.elts; | |
| 4448 for (i = 0; i < headers_merged.nelts; i++) { | |
| 4449 | |
| 4450 hk = ngx_array_push(&headers_names); | |
| 4451 if (hk == NULL) { | |
| 4452 return NGX_ERROR; | |
| 4453 } | |
| 4454 | |
| 4455 hk->key = src[i].key; | |
| 4456 hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); | |
| 4457 hk->value = (void *) 1; | |
| 4458 | |
| 4459 if (src[i].value.len == 0) { | |
| 4460 continue; | |
| 4461 } | |
| 4462 | |
| 4463 copy = ngx_array_push_n(headers->lengths, | |
| 4464 sizeof(ngx_http_script_copy_code_t)); | |
| 4465 if (copy == NULL) { | |
| 4466 return NGX_ERROR; | |
| 4467 } | |
| 4468 | |
|
7271
9e25a5380a21
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7249
diff
changeset
|
4469 copy->code = (ngx_http_script_code_pt) (void *) |
|
9e25a5380a21
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7249
diff
changeset
|
4470 ngx_http_script_copy_len_code; |
| 7233 | 4471 copy->len = src[i].key.len; |
| 4472 | |
| 4473 size = (sizeof(ngx_http_script_copy_code_t) | |
| 4474 + src[i].key.len + sizeof(uintptr_t) - 1) | |
| 4475 & ~(sizeof(uintptr_t) - 1); | |
| 4476 | |
| 4477 copy = ngx_array_push_n(headers->values, size); | |
| 4478 if (copy == NULL) { | |
| 4479 return NGX_ERROR; | |
| 4480 } | |
| 4481 | |
| 4482 copy->code = ngx_http_script_copy_code; | |
| 4483 copy->len = src[i].key.len; | |
| 4484 | |
| 4485 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); | |
| 4486 ngx_memcpy(p, src[i].key.data, src[i].key.len); | |
| 4487 | |
| 4488 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 4489 | |
| 4490 sc.cf = cf; | |
| 4491 sc.source = &src[i].value; | |
| 4492 sc.flushes = &headers->flushes; | |
| 4493 sc.lengths = &headers->lengths; | |
| 4494 sc.values = &headers->values; | |
| 4495 | |
| 4496 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 4497 return NGX_ERROR; | |
| 4498 } | |
| 4499 | |
| 4500 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
| 4501 if (code == NULL) { | |
| 4502 return NGX_ERROR; | |
| 4503 } | |
| 4504 | |
| 4505 *code = (uintptr_t) NULL; | |
| 4506 | |
| 4507 code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); | |
| 4508 if (code == NULL) { | |
| 4509 return NGX_ERROR; | |
| 4510 } | |
| 4511 | |
| 4512 *code = (uintptr_t) NULL; | |
| 4513 } | |
| 4514 | |
| 4515 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
| 4516 if (code == NULL) { | |
| 4517 return NGX_ERROR; | |
| 4518 } | |
| 4519 | |
| 4520 *code = (uintptr_t) NULL; | |
| 4521 | |
| 4522 | |
| 4523 hash.hash = &headers->hash; | |
| 4524 hash.key = ngx_hash_key_lc; | |
| 4525 hash.max_size = 512; | |
| 4526 hash.bucket_size = 64; | |
| 4527 hash.name = "grpc_headers_hash"; | |
| 4528 hash.pool = cf->pool; | |
| 4529 hash.temp_pool = NULL; | |
| 4530 | |
| 4531 return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); | |
| 4532 } | |
| 4533 | |
| 4534 | |
| 4535 static char * | |
| 4536 ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 4537 { | |
| 4538 ngx_http_grpc_loc_conf_t *glcf = conf; | |
| 4539 | |
| 4540 size_t add; | |
| 4541 ngx_str_t *value, *url; | |
| 4542 ngx_url_t u; | |
| 4543 ngx_http_core_loc_conf_t *clcf; | |
| 4544 | |
| 4545 if (glcf->upstream.upstream) { | |
| 4546 return "is duplicate"; | |
| 4547 } | |
| 4548 | |
| 4549 value = cf->args->elts; | |
| 4550 url = &value[1]; | |
| 4551 | |
| 4552 if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) { | |
| 4553 add = 7; | |
| 4554 | |
| 4555 } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) { | |
| 4556 | |
| 4557 #if (NGX_HTTP_SSL) | |
| 4558 glcf->ssl = 1; | |
| 4559 | |
| 4560 add = 8; | |
| 4561 #else | |
| 4562 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 4563 "grpcs protocol requires SSL support"); | |
| 4564 return NGX_CONF_ERROR; | |
| 4565 #endif | |
| 4566 | |
| 4567 } else { | |
| 4568 add = 0; | |
| 4569 } | |
| 4570 | |
| 4571 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 4572 | |
| 4573 u.url.len = url->len - add; | |
| 4574 u.url.data = url->data + add; | |
| 4575 u.no_resolve = 1; | |
| 4576 | |
| 4577 glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); | |
| 4578 if (glcf->upstream.upstream == NULL) { | |
| 4579 return NGX_CONF_ERROR; | |
| 4580 } | |
| 4581 | |
| 4582 if (u.family != AF_UNIX) { | |
| 4583 | |
| 4584 if (u.no_port) { | |
| 4585 glcf->host = u.host; | |
| 4586 | |
| 4587 } else { | |
| 4588 glcf->host.len = u.host.len + 1 + u.port_text.len; | |
| 4589 glcf->host.data = u.host.data; | |
| 4590 } | |
| 4591 | |
| 4592 } else { | |
| 4593 ngx_str_set(&glcf->host, "localhost"); | |
| 4594 } | |
| 4595 | |
| 4596 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 4597 | |
| 4598 clcf->handler = ngx_http_grpc_handler; | |
| 4599 | |
|
7321
45e513c3540d
Fixed invalid access to location defined as an empty string.
Ruslan Ermilov <ru@nginx.com>
parents:
7320
diff
changeset
|
4600 if (clcf->name.len && clcf->name.data[clcf->name.len - 1] == '/') { |
| 7233 | 4601 clcf->auto_redirect = 1; |
| 4602 } | |
| 4603 | |
| 4604 return NGX_CONF_OK; | |
| 4605 } | |
| 4606 | |
| 4607 | |
| 4608 #if (NGX_HTTP_SSL) | |
| 4609 | |
| 4610 static char * | |
| 4611 ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 4612 { | |
| 4613 ngx_http_grpc_loc_conf_t *glcf = conf; | |
| 4614 | |
| 4615 ngx_str_t *value; | |
| 4616 | |
| 4617 if (glcf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
| 4618 return "is duplicate"; | |
| 4619 } | |
| 4620 | |
| 4621 value = cf->args->elts; | |
| 4622 | |
| 4623 glcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
| 4624 | |
| 4625 if (glcf->ssl_passwords == NULL) { | |
| 4626 return NGX_CONF_ERROR; | |
| 4627 } | |
| 4628 | |
| 4629 return NGX_CONF_OK; | |
| 4630 } | |
| 4631 | |
| 4632 | |
| 4633 static ngx_int_t | |
| 4634 ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf) | |
| 4635 { | |
| 4636 ngx_pool_cleanup_t *cln; | |
| 4637 | |
| 4638 glcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
| 4639 if (glcf->upstream.ssl == NULL) { | |
| 4640 return NGX_ERROR; | |
| 4641 } | |
| 4642 | |
| 4643 glcf->upstream.ssl->log = cf->log; | |
| 4644 | |
| 4645 if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL) | |
| 4646 != NGX_OK) | |
| 4647 { | |
| 4648 return NGX_ERROR; | |
| 4649 } | |
| 4650 | |
| 4651 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
| 4652 if (cln == NULL) { | |
|
7473
8981dbb12254
SSL: fixed potential leak on memory allocation errors.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7379
diff
changeset
|
4653 ngx_ssl_cleanup_ctx(glcf->upstream.ssl); |
| 7233 | 4654 return NGX_ERROR; |
| 4655 } | |
| 4656 | |
| 4657 cln->handler = ngx_ssl_cleanup_ctx; | |
| 4658 cln->data = glcf->upstream.ssl; | |
| 4659 | |
| 4660 if (glcf->ssl_certificate.len) { | |
| 4661 | |
| 4662 if (glcf->ssl_certificate_key.len == 0) { | |
| 4663 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4664 "no \"grpc_ssl_certificate_key\" is defined " | |
| 4665 "for certificate \"%V\"", &glcf->ssl_certificate); | |
| 4666 return NGX_ERROR; | |
| 4667 } | |
| 4668 | |
| 4669 if (ngx_ssl_certificate(cf, glcf->upstream.ssl, &glcf->ssl_certificate, | |
| 4670 &glcf->ssl_certificate_key, glcf->ssl_passwords) | |
| 4671 != NGX_OK) | |
| 4672 { | |
| 4673 return NGX_ERROR; | |
| 4674 } | |
| 4675 } | |
| 4676 | |
| 4677 if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0) | |
| 4678 != NGX_OK) | |
| 4679 { | |
| 4680 return NGX_ERROR; | |
| 4681 } | |
| 4682 | |
| 4683 if (glcf->upstream.ssl_verify) { | |
| 4684 if (glcf->ssl_trusted_certificate.len == 0) { | |
| 4685 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4686 "no grpc_ssl_trusted_certificate for grpc_ssl_verify"); | |
| 4687 return NGX_ERROR; | |
| 4688 } | |
| 4689 | |
| 4690 if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl, | |
| 4691 &glcf->ssl_trusted_certificate, | |
| 4692 glcf->ssl_verify_depth) | |
| 4693 != NGX_OK) | |
| 4694 { | |
| 4695 return NGX_ERROR; | |
| 4696 } | |
| 4697 | |
| 4698 if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) { | |
| 4699 return NGX_ERROR; | |
| 4700 } | |
| 4701 } | |
| 4702 | |
|
7320
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4703 if (ngx_ssl_client_session_cache(cf, glcf->upstream.ssl, |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4704 glcf->upstream.ssl_session_reuse) |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4705 != NGX_OK) |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4706 { |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4707 return NGX_ERROR; |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4708 } |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4709 |
| 7233 | 4710 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation |
| 4711 | |
| 4712 if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx, | |
| 4713 (u_char *) "\x02h2", 3) | |
| 4714 != 0) | |
| 4715 { | |
| 4716 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4717 "SSL_CTX_set_alpn_protos() failed"); | |
| 4718 return NGX_ERROR; | |
| 4719 } | |
| 4720 | |
| 4721 #endif | |
| 4722 | |
| 4723 return NGX_OK; | |
| 4724 } | |
| 4725 | |
| 4726 #endif |