Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
Craig Tiller | 0605995 | 2015-02-18 08:34:56 -0800 | [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 | |
| 34 | #include "src/core/channel/http_server_filter.h" |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 35 | |
| 36 | #include <string.h> |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 37 | #include <grpc/grpc_http.h> |
| 38 | #include <grpc/support/alloc.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 39 | #include <grpc/support/log.h> |
| 40 | |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 41 | typedef enum { NOT_RECEIVED, POST, GET } known_method_type; |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 42 | |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 43 | typedef struct { |
| 44 | grpc_mdelem *path; |
| 45 | grpc_mdelem *content_type; |
| 46 | grpc_byte_buffer *content; |
| 47 | } gettable; |
| 48 | |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 49 | typedef struct call_data { |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 50 | known_method_type seen_method; |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 51 | gpr_uint8 sent_status; |
| 52 | gpr_uint8 seen_scheme; |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 53 | gpr_uint8 seen_te_trailers; |
| 54 | grpc_mdelem *path; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 55 | } call_data; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 56 | |
klempner | 1e27328 | 2014-12-10 13:55:41 -0800 | [diff] [blame] | 57 | typedef struct channel_data { |
| 58 | grpc_mdelem *te_trailers; |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 59 | grpc_mdelem *method_get; |
| 60 | grpc_mdelem *method_post; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 61 | grpc_mdelem *http_scheme; |
| 62 | grpc_mdelem *https_scheme; |
| 63 | /* TODO(klempner): Remove this once we stop using it */ |
| 64 | grpc_mdelem *grpc_scheme; |
| 65 | grpc_mdelem *content_type; |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 66 | grpc_mdelem *status_ok; |
| 67 | grpc_mdelem *status_not_found; |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 68 | grpc_mdstr *path_key; |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 69 | |
| 70 | size_t gettable_count; |
| 71 | gettable *gettables; |
klempner | 1e27328 | 2014-12-10 13:55:41 -0800 | [diff] [blame] | 72 | } channel_data; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 73 | |
| 74 | /* used to silence 'variable not used' warnings */ |
| 75 | static void ignore_unused(void *ignored) {} |
| 76 | |
Craig Tiller | ce6e350 | 2015-01-19 18:04:42 -0800 | [diff] [blame] | 77 | /* Handle 'GET': not technically grpc, so probably a web browser hitting |
| 78 | us */ |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 79 | static void payload_done(void *elem, grpc_op_error error) { |
| 80 | if (error == GRPC_OP_OK) { |
| 81 | grpc_call_element_send_finish(elem); |
| 82 | } |
| 83 | } |
| 84 | |
Craig Tiller | ce6e350 | 2015-01-19 18:04:42 -0800 | [diff] [blame] | 85 | static void handle_get(grpc_call_element *elem) { |
| 86 | channel_data *channeld = elem->channel_data; |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 87 | call_data *calld = elem->call_data; |
| 88 | grpc_call_op op; |
| 89 | size_t i; |
| 90 | |
| 91 | for (i = 0; i < channeld->gettable_count; i++) { |
| 92 | if (channeld->gettables[i].path == calld->path) { |
| 93 | grpc_call_element_send_metadata(elem, |
| 94 | grpc_mdelem_ref(channeld->status_ok)); |
| 95 | grpc_call_element_send_metadata( |
| 96 | elem, grpc_mdelem_ref(channeld->gettables[i].content_type)); |
| 97 | op.type = GRPC_SEND_PREFORMATTED_MESSAGE; |
| 98 | op.dir = GRPC_CALL_DOWN; |
| 99 | op.flags = 0; |
| 100 | op.data.message = channeld->gettables[i].content; |
| 101 | op.done_cb = payload_done; |
| 102 | op.user_data = elem; |
| 103 | grpc_call_next_op(elem, &op); |
| 104 | } |
| 105 | } |
| 106 | grpc_call_element_send_metadata(elem, |
| 107 | grpc_mdelem_ref(channeld->status_not_found)); |
Craig Tiller | ce6e350 | 2015-01-19 18:04:42 -0800 | [diff] [blame] | 108 | grpc_call_element_send_finish(elem); |
| 109 | } |
| 110 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 111 | /* Called either: |
| 112 | - in response to an API call (or similar) from above, to send something |
| 113 | - a network event (or similar) from below, to receive something |
| 114 | op contains type and call direction information, in addition to the data |
| 115 | that is being sent or received. */ |
ctiller | f962f52 | 2014-12-10 15:28:27 -0800 | [diff] [blame] | 116 | static void call_op(grpc_call_element *elem, grpc_call_element *from_elem, |
| 117 | grpc_call_op *op) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 118 | /* grab pointers to our data from the call element */ |
| 119 | call_data *calld = elem->call_data; |
| 120 | channel_data *channeld = elem->channel_data; |
| 121 | GRPC_CALL_LOG_OP(GPR_INFO, elem, op); |
| 122 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 123 | switch (op->type) { |
| 124 | case GRPC_RECV_METADATA: |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 125 | /* Check if it is one of the headers we care about. */ |
| 126 | if (op->data.metadata == channeld->te_trailers || |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 127 | op->data.metadata == channeld->method_get || |
| 128 | op->data.metadata == channeld->method_post || |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 129 | op->data.metadata == channeld->http_scheme || |
| 130 | op->data.metadata == channeld->https_scheme || |
| 131 | op->data.metadata == channeld->grpc_scheme || |
| 132 | op->data.metadata == channeld->content_type) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 133 | /* swallow it */ |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 134 | if (op->data.metadata == channeld->method_get) { |
| 135 | calld->seen_method = GET; |
| 136 | } else if (op->data.metadata == channeld->method_post) { |
| 137 | calld->seen_method = POST; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 138 | } else if (op->data.metadata->key == channeld->http_scheme->key) { |
| 139 | calld->seen_scheme = 1; |
| 140 | } else if (op->data.metadata == channeld->te_trailers) { |
| 141 | calld->seen_te_trailers = 1; |
| 142 | } |
| 143 | /* TODO(klempner): Track that we've seen all the headers we should |
| 144 | require */ |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 145 | grpc_mdelem_unref(op->data.metadata); |
| 146 | op->done_cb(op->user_data, GRPC_OP_OK); |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 147 | } else if (op->data.metadata->key == channeld->content_type->key) { |
| 148 | if (strncmp(grpc_mdstr_as_c_string(op->data.metadata->value), |
| 149 | "application/grpc+", 17) == 0) { |
| 150 | /* Although the C implementation doesn't (currently) generate them, |
| 151 | any |
| 152 | custom +-suffix is explicitly valid. */ |
| 153 | /* TODO(klempner): We should consider preallocating common values such |
| 154 | as +proto or +json, or at least stashing them if we see them. */ |
| 155 | /* TODO(klempner): Should we be surfacing this to application code? */ |
| 156 | } else { |
| 157 | /* TODO(klempner): We're currently allowing this, but we shouldn't |
| 158 | see it without a proxy so log for now. */ |
| 159 | gpr_log(GPR_INFO, "Unexpected content-type %s", |
| 160 | channeld->content_type->key); |
| 161 | } |
| 162 | grpc_mdelem_unref(op->data.metadata); |
| 163 | op->done_cb(op->user_data, GRPC_OP_OK); |
| 164 | } else if (op->data.metadata->key == channeld->te_trailers->key || |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 165 | op->data.metadata->key == channeld->method_post->key || |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 166 | op->data.metadata->key == channeld->http_scheme->key || |
| 167 | op->data.metadata->key == channeld->content_type->key) { |
| 168 | gpr_log(GPR_ERROR, "Invalid %s: header: '%s'", |
| 169 | grpc_mdstr_as_c_string(op->data.metadata->key), |
ctiller | 03dc30e | 2014-12-01 17:13:04 -0800 | [diff] [blame] | 170 | grpc_mdstr_as_c_string(op->data.metadata->value)); |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 171 | /* swallow it and error everything out. */ |
| 172 | /* TODO(klempner): We ought to generate more descriptive error messages |
| 173 | on the wire here. */ |
ctiller | 03dc30e | 2014-12-01 17:13:04 -0800 | [diff] [blame] | 174 | grpc_mdelem_unref(op->data.metadata); |
| 175 | op->done_cb(op->user_data, GRPC_OP_OK); |
| 176 | grpc_call_element_send_cancel(elem); |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 177 | } else if (op->data.metadata->key == channeld->path_key) { |
| 178 | if (calld->path != NULL) { |
| 179 | gpr_log(GPR_ERROR, "Received :path twice"); |
| 180 | grpc_mdelem_unref(calld->path); |
| 181 | } |
Craig Tiller | 12b533d | 2015-01-19 20:31:44 -0800 | [diff] [blame] | 182 | calld->path = op->data.metadata; |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 183 | op->done_cb(op->user_data, GRPC_OP_OK); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 184 | } else { |
| 185 | /* pass the event up */ |
| 186 | grpc_call_next_op(elem, op); |
| 187 | } |
| 188 | break; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 189 | case GRPC_RECV_END_OF_INITIAL_METADATA: |
| 190 | /* Have we seen the required http2 transport headers? |
| 191 | (:method, :scheme, content-type, with :path and :authority covered |
| 192 | at the channel level right now) */ |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 193 | if (calld->seen_method == POST && calld->seen_scheme && |
| 194 | calld->seen_te_trailers && calld->path) { |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 195 | grpc_call_element_recv_metadata(elem, calld->path); |
| 196 | calld->path = NULL; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 197 | grpc_call_next_op(elem, op); |
Craig Tiller | ce6e350 | 2015-01-19 18:04:42 -0800 | [diff] [blame] | 198 | } else if (calld->seen_method == GET) { |
| 199 | handle_get(elem); |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 200 | } else { |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 201 | if (calld->seen_method == NOT_RECEIVED) { |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 202 | gpr_log(GPR_ERROR, "Missing :method header"); |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 203 | } |
| 204 | if (!calld->seen_scheme) { |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 205 | gpr_log(GPR_ERROR, "Missing :scheme header"); |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 206 | } |
| 207 | if (!calld->seen_te_trailers) { |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 208 | gpr_log(GPR_ERROR, "Missing te trailers header"); |
| 209 | } |
| 210 | /* Error this call out */ |
| 211 | op->done_cb(op->user_data, GRPC_OP_OK); |
| 212 | grpc_call_element_send_cancel(elem); |
| 213 | } |
| 214 | break; |
klempner | 1e27328 | 2014-12-10 13:55:41 -0800 | [diff] [blame] | 215 | case GRPC_SEND_START: |
| 216 | case GRPC_SEND_METADATA: |
| 217 | /* If we haven't sent status 200 yet, we need to so so because it needs to |
| 218 | come before any non : prefixed metadata. */ |
| 219 | if (!calld->sent_status) { |
| 220 | calld->sent_status = 1; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 221 | /* status is reffed by grpc_call_element_send_metadata */ |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 222 | grpc_call_element_send_metadata(elem, |
| 223 | grpc_mdelem_ref(channeld->status_ok)); |
klempner | 1e27328 | 2014-12-10 13:55:41 -0800 | [diff] [blame] | 224 | } |
| 225 | grpc_call_next_op(elem, op); |
| 226 | break; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 227 | default: |
| 228 | /* pass control up or down the stack depending on op->dir */ |
| 229 | grpc_call_next_op(elem, op); |
| 230 | break; |
| 231 | } |
| 232 | } |
| 233 | |
| 234 | /* Called on special channel events, such as disconnection or new incoming |
| 235 | calls on the server */ |
ctiller | f962f52 | 2014-12-10 15:28:27 -0800 | [diff] [blame] | 236 | static void channel_op(grpc_channel_element *elem, |
| 237 | grpc_channel_element *from_elem, grpc_channel_op *op) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 238 | /* grab pointers to our data from the channel element */ |
| 239 | channel_data *channeld = elem->channel_data; |
| 240 | |
| 241 | ignore_unused(channeld); |
| 242 | |
| 243 | switch (op->type) { |
| 244 | default: |
| 245 | /* pass control up or down the stack depending on op->dir */ |
| 246 | grpc_channel_next_op(elem, op); |
| 247 | break; |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | /* Constructor for call_data */ |
| 252 | static void init_call_elem(grpc_call_element *elem, |
| 253 | const void *server_transport_data) { |
| 254 | /* grab pointers to our data from the call element */ |
| 255 | call_data *calld = elem->call_data; |
| 256 | channel_data *channeld = elem->channel_data; |
| 257 | |
| 258 | ignore_unused(channeld); |
| 259 | |
| 260 | /* initialize members */ |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 261 | calld->path = NULL; |
klempner | 1e27328 | 2014-12-10 13:55:41 -0800 | [diff] [blame] | 262 | calld->sent_status = 0; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 263 | calld->seen_scheme = 0; |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 264 | calld->seen_method = NOT_RECEIVED; |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 265 | calld->seen_te_trailers = 0; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 266 | } |
| 267 | |
| 268 | /* Destructor for call_data */ |
| 269 | static void destroy_call_elem(grpc_call_element *elem) { |
| 270 | /* grab pointers to our data from the call element */ |
| 271 | call_data *calld = elem->call_data; |
| 272 | channel_data *channeld = elem->channel_data; |
| 273 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 274 | ignore_unused(channeld); |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 275 | |
| 276 | if (calld->path) { |
| 277 | grpc_mdelem_unref(calld->path); |
| 278 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | /* Constructor for channel_data */ |
| 282 | static void init_channel_elem(grpc_channel_element *elem, |
| 283 | const grpc_channel_args *args, grpc_mdctx *mdctx, |
| 284 | int is_first, int is_last) { |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 285 | size_t i; |
| 286 | size_t gettable_capacity = 0; |
| 287 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 288 | /* grab pointers to our data from the channel element */ |
| 289 | channel_data *channeld = elem->channel_data; |
| 290 | |
| 291 | /* The first and the last filters tend to be implemented differently to |
| 292 | handle the case that there's no 'next' filter to call on the up or down |
| 293 | path */ |
| 294 | GPR_ASSERT(!is_first); |
| 295 | GPR_ASSERT(!is_last); |
| 296 | |
| 297 | /* initialize members */ |
| 298 | channeld->te_trailers = grpc_mdelem_from_strings(mdctx, "te", "trailers"); |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 299 | channeld->status_ok = grpc_mdelem_from_strings(mdctx, ":status", "200"); |
| 300 | channeld->status_not_found = |
| 301 | grpc_mdelem_from_strings(mdctx, ":status", "404"); |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 302 | channeld->method_post = grpc_mdelem_from_strings(mdctx, ":method", "POST"); |
| 303 | channeld->method_get = grpc_mdelem_from_strings(mdctx, ":method", "GET"); |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 304 | channeld->http_scheme = grpc_mdelem_from_strings(mdctx, ":scheme", "http"); |
| 305 | channeld->https_scheme = grpc_mdelem_from_strings(mdctx, ":scheme", "https"); |
| 306 | channeld->grpc_scheme = grpc_mdelem_from_strings(mdctx, ":scheme", "grpc"); |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 307 | channeld->path_key = grpc_mdstr_from_string(mdctx, ":path"); |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 308 | channeld->content_type = |
| 309 | grpc_mdelem_from_strings(mdctx, "content-type", "application/grpc"); |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 310 | |
Craig Tiller | 53d5f9d | 2015-01-21 13:03:18 -0800 | [diff] [blame] | 311 | /* initialize http download support */ |
| 312 | channeld->gettable_count = 0; |
| 313 | channeld->gettables = NULL; |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 314 | for (i = 0; i < args->num_args; i++) { |
| 315 | if (0 == strcmp(args->args[i].key, GRPC_ARG_SERVE_OVER_HTTP)) { |
| 316 | gettable *g; |
| 317 | gpr_slice slice; |
| 318 | grpc_http_server_page *p = args->args[i].value.pointer.p; |
| 319 | if (channeld->gettable_count == gettable_capacity) { |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 320 | gettable_capacity = |
| 321 | GPR_MAX(gettable_capacity * 3 / 2, gettable_capacity + 1); |
Craig Tiller | 5a8a807 | 2015-01-30 09:41:25 -0800 | [diff] [blame] | 322 | channeld->gettables = gpr_realloc(channeld->gettables, |
| 323 | gettable_capacity * sizeof(gettable)); |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 324 | } |
| 325 | g = &channeld->gettables[channeld->gettable_count++]; |
| 326 | g->path = grpc_mdelem_from_strings(mdctx, ":path", p->path); |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 327 | g->content_type = |
| 328 | grpc_mdelem_from_strings(mdctx, "content-type", p->content_type); |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 329 | slice = gpr_slice_from_copied_string(p->content); |
| 330 | g->content = grpc_byte_buffer_create(&slice, 1); |
Craig Tiller | d375663 | 2015-01-30 09:45:50 -0800 | [diff] [blame] | 331 | gpr_slice_unref(slice); |
Craig Tiller | c50e398 | 2015-01-20 16:30:54 -0800 | [diff] [blame] | 332 | } |
| 333 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | /* Destructor for channel data */ |
| 337 | static void destroy_channel_elem(grpc_channel_element *elem) { |
Craig Tiller | 5a8a807 | 2015-01-30 09:41:25 -0800 | [diff] [blame] | 338 | size_t i; |
| 339 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 340 | /* grab pointers to our data from the channel element */ |
| 341 | channel_data *channeld = elem->channel_data; |
| 342 | |
Craig Tiller | 5a8a807 | 2015-01-30 09:41:25 -0800 | [diff] [blame] | 343 | for (i = 0; i < channeld->gettable_count; i++) { |
| 344 | grpc_mdelem_unref(channeld->gettables[i].path); |
| 345 | grpc_mdelem_unref(channeld->gettables[i].content_type); |
Craig Tiller | d375663 | 2015-01-30 09:45:50 -0800 | [diff] [blame] | 346 | grpc_byte_buffer_destroy(channeld->gettables[i].content); |
Craig Tiller | 5a8a807 | 2015-01-30 09:41:25 -0800 | [diff] [blame] | 347 | } |
| 348 | gpr_free(channeld->gettables); |
| 349 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 350 | grpc_mdelem_unref(channeld->te_trailers); |
Craig Tiller | fd7d3ec | 2015-01-21 13:37:09 -0800 | [diff] [blame] | 351 | grpc_mdelem_unref(channeld->status_ok); |
| 352 | grpc_mdelem_unref(channeld->status_not_found); |
Craig Tiller | c923cd7 | 2015-01-19 16:14:31 -0800 | [diff] [blame] | 353 | grpc_mdelem_unref(channeld->method_post); |
| 354 | grpc_mdelem_unref(channeld->method_get); |
ctiller | d74729d | 2015-01-12 13:31:36 -0800 | [diff] [blame] | 355 | grpc_mdelem_unref(channeld->http_scheme); |
| 356 | grpc_mdelem_unref(channeld->https_scheme); |
| 357 | grpc_mdelem_unref(channeld->grpc_scheme); |
| 358 | grpc_mdelem_unref(channeld->content_type); |
Craig Tiller | d2d0a11 | 2015-01-19 16:07:52 -0800 | [diff] [blame] | 359 | grpc_mdstr_unref(channeld->path_key); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | const grpc_channel_filter grpc_http_server_filter = { |
Craig Tiller | 5a8a807 | 2015-01-30 09:41:25 -0800 | [diff] [blame] | 363 | call_op, channel_op, sizeof(call_data), init_call_elem, destroy_call_elem, |
| 364 | sizeof(channel_data), init_channel_elem, destroy_channel_elem, |
Craig Tiller | 0605995 | 2015-02-18 08:34:56 -0800 | [diff] [blame^] | 365 | "http-server"}; |