Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
Craig Tiller | 6169d5f | 2016-03-31 07:46:18 -0700 | [diff] [blame] | 3 | * Copyright 2015, Google Inc. |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 4 | * All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions are |
| 8 | * met: |
| 9 | * |
| 10 | * * Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * * Redistributions in binary form must reproduce the above |
| 13 | * copyright notice, this list of conditions and the following disclaimer |
| 14 | * in the documentation and/or other materials provided with the |
| 15 | * distribution. |
| 16 | * * Neither the name of Google Inc. nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 24 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 25 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 26 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 27 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 28 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 29 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 30 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | * |
| 32 | */ |
| 33 | |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 34 | #include "src/core/lib/channel/http_server_filter.h" |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 35 | |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 36 | #include <grpc/support/alloc.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 37 | #include <grpc/support/log.h> |
yang-g | d88e1d8 | 2015-12-02 13:23:33 -0800 | [diff] [blame] | 38 | #include <string.h> |
Craig Tiller | 9533d04 | 2016-03-25 17:11:06 -0700 | [diff] [blame] | 39 | #include "src/core/lib/profiling/timers.h" |
| 40 | #include "src/core/lib/transport/static_metadata.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 41 | |
Mark D. Roth | 640d71d | 2016-04-27 07:17:58 -0700 | [diff] [blame] | 42 | #define EXPECTED_CONTENT_TYPE "application/grpc" |
| 43 | #define EXPECTED_CONTENT_TYPE_LENGTH sizeof(EXPECTED_CONTENT_TYPE) - 1 |
| 44 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 45 | typedef struct call_data { |
Craig Tiller | 7536af0 | 2015-12-22 13:49:30 -0800 | [diff] [blame] | 46 | uint8_t seen_path; |
Craig Tiller | 4d40ba3 | 2016-03-09 17:48:40 -0800 | [diff] [blame] | 47 | uint8_t seen_method; |
Craig Tiller | 7536af0 | 2015-12-22 13:49:30 -0800 | [diff] [blame] | 48 | uint8_t sent_status; |
| 49 | uint8_t seen_scheme; |
| 50 | uint8_t seen_te_trailers; |
| 51 | uint8_t seen_authority; |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 52 | grpc_linked_mdelem status; |
Craig Tiller | cb01417 | 2015-09-08 16:40:26 -0700 | [diff] [blame] | 53 | grpc_linked_mdelem content_type; |
Craig Tiller | 83f88d9 | 2015-04-21 16:02:05 -0700 | [diff] [blame] | 54 | |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 55 | grpc_metadata_batch *recv_initial_metadata; |
Craig Tiller | 4d40ba3 | 2016-03-09 17:48:40 -0800 | [diff] [blame] | 56 | bool *recv_idempotent_request; |
Craig Tiller | 98bf7e6 | 2015-06-24 08:47:07 -0700 | [diff] [blame] | 57 | /** Closure to call when finished with the hs_on_recv hook */ |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 58 | grpc_closure *on_done_recv; |
Craig Tiller | 98bf7e6 | 2015-06-24 08:47:07 -0700 | [diff] [blame] | 59 | /** Receive closures are chained: we inject this closure as the on_done_recv |
| 60 | up-call on transport_op, and remember to call our on_done_recv member |
| 61 | after handling it. */ |
Craig Tiller | 3382511 | 2015-09-18 07:44:19 -0700 | [diff] [blame] | 62 | grpc_closure hs_on_recv; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 63 | } call_data; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 64 | |
Craig Tiller | 7536af0 | 2015-12-22 13:49:30 -0800 | [diff] [blame] | 65 | typedef struct channel_data { uint8_t unused; } channel_data; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 66 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 67 | typedef struct { |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 68 | grpc_call_element *elem; |
Craig Tiller | 8af4c33 | 2015-09-22 12:32:31 -0700 | [diff] [blame] | 69 | grpc_exec_ctx *exec_ctx; |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 70 | } server_filter_args; |
| 71 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 72 | static grpc_mdelem *server_filter(void *user_data, grpc_mdelem *md) { |
Craig Tiller | d1bec03 | 2015-09-18 17:29:00 -0700 | [diff] [blame] | 73 | server_filter_args *a = user_data; |
| 74 | grpc_call_element *elem = a->elem; |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 75 | call_data *calld = elem->call_data; |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 76 | |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 77 | /* Check if it is one of the headers we care about. */ |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 78 | if (md == GRPC_MDELEM_TE_TRAILERS || md == GRPC_MDELEM_METHOD_POST || |
Craig Tiller | 4d40ba3 | 2016-03-09 17:48:40 -0800 | [diff] [blame] | 79 | md == GRPC_MDELEM_METHOD_PUT || md == GRPC_MDELEM_SCHEME_HTTP || |
| 80 | md == GRPC_MDELEM_SCHEME_HTTPS || |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 81 | md == GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 82 | /* swallow it */ |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 83 | if (md == GRPC_MDELEM_METHOD_POST) { |
Craig Tiller | 4d40ba3 | 2016-03-09 17:48:40 -0800 | [diff] [blame] | 84 | calld->seen_method = 1; |
| 85 | *calld->recv_idempotent_request = false; |
| 86 | } else if (md == GRPC_MDELEM_METHOD_PUT) { |
| 87 | calld->seen_method = 1; |
| 88 | *calld->recv_idempotent_request = true; |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 89 | } else if (md->key == GRPC_MDSTR_SCHEME) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 90 | calld->seen_scheme = 1; |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 91 | } else if (md == GRPC_MDELEM_TE_TRAILERS) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 92 | calld->seen_te_trailers = 1; |
| 93 | } |
| 94 | /* TODO(klempner): Track that we've seen all the headers we should |
| 95 | require */ |
| 96 | return NULL; |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 97 | } else if (md->key == GRPC_MDSTR_CONTENT_TYPE) { |
Mark D. Roth | 1f3319b | 2016-04-27 10:59:19 -0700 | [diff] [blame] | 98 | const char *value_str = grpc_mdstr_as_c_string(md->value); |
Mark D. Roth | 640d71d | 2016-04-27 07:17:58 -0700 | [diff] [blame] | 99 | if (strncmp(value_str, EXPECTED_CONTENT_TYPE, |
| 100 | EXPECTED_CONTENT_TYPE_LENGTH) == 0 && |
| 101 | (value_str[EXPECTED_CONTENT_TYPE_LENGTH] == '+' || |
| 102 | value_str[EXPECTED_CONTENT_TYPE_LENGTH] == ';')) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 103 | /* Although the C implementation doesn't (currently) generate them, |
| 104 | any custom +-suffix is explicitly valid. */ |
| 105 | /* TODO(klempner): We should consider preallocating common values such |
| 106 | as +proto or +json, or at least stashing them if we see them. */ |
| 107 | /* TODO(klempner): Should we be surfacing this to application code? */ |
| 108 | } else { |
| 109 | /* TODO(klempner): We're currently allowing this, but we shouldn't |
| 110 | see it without a proxy so log for now. */ |
David Garcia Quintas | 8ba60db | 2016-05-20 13:53:14 -0700 | [diff] [blame] | 111 | gpr_log(GPR_INFO, "Unexpected content-type '%s'", value_str); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 112 | } |
| 113 | return NULL; |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 114 | } else if (md->key == GRPC_MDSTR_TE || md->key == GRPC_MDSTR_METHOD || |
| 115 | md->key == GRPC_MDSTR_SCHEME) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 116 | gpr_log(GPR_ERROR, "Invalid %s: header: '%s'", |
| 117 | grpc_mdstr_as_c_string(md->key), grpc_mdstr_as_c_string(md->value)); |
| 118 | /* swallow it and error everything out. */ |
| 119 | /* TODO(klempner): We ought to generate more descriptive error messages |
| 120 | on the wire here. */ |
| 121 | grpc_call_element_send_cancel(a->exec_ctx, elem); |
| 122 | return NULL; |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 123 | } else if (md->key == GRPC_MDSTR_PATH) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 124 | if (calld->seen_path) { |
| 125 | gpr_log(GPR_ERROR, "Received :path twice"); |
Craig Tiller | 6902ad2 | 2015-04-16 08:01:49 -0700 | [diff] [blame] | 126 | return NULL; |
| 127 | } |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 128 | calld->seen_path = 1; |
| 129 | return md; |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 130 | } else if (md->key == GRPC_MDSTR_AUTHORITY) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 131 | calld->seen_authority = 1; |
| 132 | return md; |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 133 | } else if (md->key == GRPC_MDSTR_HOST) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 134 | /* translate host to :authority since :authority may be |
| 135 | omitted */ |
| 136 | grpc_mdelem *authority = grpc_mdelem_from_metadata_strings( |
Craig Tiller | b2b4261 | 2015-11-20 12:02:17 -0800 | [diff] [blame] | 137 | GRPC_MDSTR_AUTHORITY, GRPC_MDSTR_REF(md->value)); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 138 | calld->seen_authority = 1; |
| 139 | return authority; |
| 140 | } else { |
| 141 | return md; |
| 142 | } |
Craig Tiller | ce6e350 | 2015-01-19 18:04:42 -0800 | [diff] [blame] | 143 | } |
| 144 | |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 145 | static void hs_on_recv(grpc_exec_ctx *exec_ctx, void *user_data, |
| 146 | grpc_error *err) { |
Craig Tiller | 83f88d9 | 2015-04-21 16:02:05 -0700 | [diff] [blame] | 147 | grpc_call_element *elem = user_data; |
| 148 | call_data *calld = elem->call_data; |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 149 | if (err == GRPC_ERROR_NONE) { |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 150 | server_filter_args a; |
| 151 | a.elem = elem; |
| 152 | a.exec_ctx = exec_ctx; |
| 153 | grpc_metadata_batch_filter(calld->recv_initial_metadata, server_filter, &a); |
| 154 | /* Have we seen the required http2 transport headers? |
| 155 | (:method, :scheme, content-type, with :path and :authority covered |
| 156 | at the channel level right now) */ |
Craig Tiller | 4d40ba3 | 2016-03-09 17:48:40 -0800 | [diff] [blame] | 157 | if (calld->seen_method && calld->seen_scheme && calld->seen_te_trailers && |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 158 | calld->seen_path && calld->seen_authority) { |
| 159 | /* do nothing */ |
| 160 | } else { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 161 | err = GRPC_ERROR_CREATE("Bad incoming HTTP headers"); |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 162 | if (!calld->seen_path) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 163 | err = grpc_error_add_child(err, |
| 164 | GRPC_ERROR_CREATE("Missing :path header")); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 165 | } |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 166 | if (!calld->seen_authority) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 167 | err = grpc_error_add_child( |
| 168 | err, GRPC_ERROR_CREATE("Missing :authority header")); |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 169 | } |
Craig Tiller | 4d40ba3 | 2016-03-09 17:48:40 -0800 | [diff] [blame] | 170 | if (!calld->seen_method) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 171 | err = grpc_error_add_child(err, |
| 172 | GRPC_ERROR_CREATE("Missing :method header")); |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 173 | } |
| 174 | if (!calld->seen_scheme) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 175 | err = grpc_error_add_child(err, |
| 176 | GRPC_ERROR_CREATE("Missing :scheme header")); |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 177 | } |
| 178 | if (!calld->seen_te_trailers) { |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 179 | err = grpc_error_add_child( |
| 180 | err, GRPC_ERROR_CREATE("Missing te: trailers header")); |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 181 | } |
| 182 | /* Error this call out */ |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 183 | grpc_call_element_send_cancel(exec_ctx, elem); |
Craig Tiller | 83f88d9 | 2015-04-21 16:02:05 -0700 | [diff] [blame] | 184 | } |
Craig Tiller | 8e5c934 | 2016-05-12 15:34:59 -0700 | [diff] [blame] | 185 | } else { |
| 186 | GRPC_ERROR_REF(err); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 187 | } |
Craig Tiller | c027e77 | 2016-05-03 16:27:00 -0700 | [diff] [blame] | 188 | calld->on_done_recv->cb(exec_ctx, calld->on_done_recv->cb_arg, err); |
Craig Tiller | 8e5c934 | 2016-05-12 15:34:59 -0700 | [diff] [blame] | 189 | GRPC_ERROR_UNREF(err); |
Craig Tiller | 83f88d9 | 2015-04-21 16:02:05 -0700 | [diff] [blame] | 190 | } |
| 191 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 192 | static void hs_mutate_op(grpc_call_element *elem, |
| 193 | grpc_transport_stream_op *op) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 194 | /* grab pointers to our data from the call element */ |
| 195 | call_data *calld = elem->call_data; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 196 | |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 197 | if (op->send_initial_metadata != NULL && !calld->sent_status) { |
| 198 | calld->sent_status = 1; |
| 199 | grpc_metadata_batch_add_head(op->send_initial_metadata, &calld->status, |
Craig Tiller | ebdef9d | 2015-11-19 17:09:49 -0800 | [diff] [blame] | 200 | GRPC_MDELEM_STATUS_200); |
| 201 | grpc_metadata_batch_add_tail( |
| 202 | op->send_initial_metadata, &calld->content_type, |
| 203 | GRPC_MDELEM_CONTENT_TYPE_APPLICATION_SLASH_GRPC); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 204 | } |
Craig Tiller | 83f88d9 | 2015-04-21 16:02:05 -0700 | [diff] [blame] | 205 | |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 206 | if (op->recv_initial_metadata) { |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 207 | /* substitute our callback for the higher callback */ |
Craig Tiller | c1b6bdd | 2016-03-10 07:10:38 -0800 | [diff] [blame] | 208 | GPR_ASSERT(op->recv_idempotent_request != NULL); |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 209 | calld->recv_initial_metadata = op->recv_initial_metadata; |
Craig Tiller | c1b6bdd | 2016-03-10 07:10:38 -0800 | [diff] [blame] | 210 | calld->recv_idempotent_request = op->recv_idempotent_request; |
Craig Tiller | a44cbfc | 2016-02-03 16:02:49 -0800 | [diff] [blame] | 211 | calld->on_done_recv = op->recv_initial_metadata_ready; |
| 212 | op->recv_initial_metadata_ready = &calld->hs_on_recv; |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 213 | } |
Craig Tiller | 50d9db5 | 2015-04-23 10:52:14 -0700 | [diff] [blame] | 214 | } |
Craig Tiller | 83f88d9 | 2015-04-21 16:02:05 -0700 | [diff] [blame] | 215 | |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 216 | static void hs_start_transport_op(grpc_exec_ctx *exec_ctx, |
| 217 | grpc_call_element *elem, |
| 218 | grpc_transport_stream_op *op) { |
| 219 | GRPC_CALL_LOG_OP(GPR_INFO, elem, op); |
Craig Tiller | 0ba432d | 2015-10-09 16:57:11 -0700 | [diff] [blame] | 220 | GPR_TIMER_BEGIN("hs_start_transport_op", 0); |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 221 | hs_mutate_op(elem, op); |
| 222 | grpc_call_next_op(exec_ctx, elem, op); |
Craig Tiller | 0ba432d | 2015-10-09 16:57:11 -0700 | [diff] [blame] | 223 | GPR_TIMER_END("hs_start_transport_op", 0); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 224 | } |
| 225 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 226 | /* Constructor for call_data */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 227 | static void init_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 228 | grpc_call_element_args *args) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 229 | /* grab pointers to our data from the call element */ |
| 230 | call_data *calld = elem->call_data; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 231 | /* initialize members */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 232 | memset(calld, 0, sizeof(*calld)); |
| 233 | grpc_closure_init(&calld->hs_on_recv, hs_on_recv, elem); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | /* Destructor for call_data */ |
Craig Tiller | 2c8063c | 2016-03-22 22:12:15 -0700 | [diff] [blame] | 237 | static void destroy_call_elem(grpc_exec_ctx *exec_ctx, grpc_call_element *elem, |
David Garcia Quintas | 5dde14c | 2016-07-28 17:29:27 -0700 | [diff] [blame] | 238 | const grpc_call_final_info *final_info, |
| 239 | void *ignored) {} |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 240 | |
| 241 | /* Constructor for channel_data */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 242 | static void init_channel_elem(grpc_exec_ctx *exec_ctx, |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 243 | grpc_channel_element *elem, |
| 244 | grpc_channel_element_args *args) { |
Craig Tiller | 577c9b2 | 2015-11-02 14:11:15 -0800 | [diff] [blame] | 245 | GPR_ASSERT(!args->is_last); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | /* Destructor for channel data */ |
Craig Tiller | a82950e | 2015-09-22 12:33:20 -0700 | [diff] [blame] | 249 | static void destroy_channel_elem(grpc_exec_ctx *exec_ctx, |
Craig Tiller | ab33b48 | 2015-11-21 08:11:04 -0800 | [diff] [blame] | 250 | grpc_channel_element *elem) {} |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 251 | |
| 252 | const grpc_channel_filter grpc_http_server_filter = { |
Craig Tiller | f40df23 | 2016-03-25 13:38:14 -0700 | [diff] [blame] | 253 | hs_start_transport_op, |
| 254 | grpc_channel_next_op, |
| 255 | sizeof(call_data), |
| 256 | init_call_elem, |
David Garcia Quintas | 4afce7e | 2016-04-18 16:25:17 -0700 | [diff] [blame] | 257 | grpc_call_stack_ignore_set_pollset_or_pollset_set, |
Craig Tiller | f40df23 | 2016-03-25 13:38:14 -0700 | [diff] [blame] | 258 | destroy_call_elem, |
| 259 | sizeof(channel_data), |
| 260 | init_channel_elem, |
| 261 | destroy_channel_elem, |
| 262 | grpc_call_next_get_peer, |
| 263 | "http-server"}; |