Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 1 | /* |
| 2 | * |
| 3 | * Copyright 2014, Google Inc. |
| 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/security/credentials.h" |
| 35 | |
| 36 | #include "src/core/httpcli/httpcli.h" |
| 37 | #include "src/core/surface/surface_em.h" |
| 38 | #include <grpc/support/alloc.h> |
| 39 | #include <grpc/support/log.h> |
| 40 | #include <grpc/support/string.h> |
| 41 | #include <grpc/support/sync.h> |
| 42 | #include <grpc/support/time.h> |
| 43 | |
| 44 | #include "third_party/cJSON/cJSON.h" |
| 45 | |
| 46 | #include <string.h> |
| 47 | #include <stdio.h> |
| 48 | |
| 49 | /* -- Constants. -- */ |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 50 | #define GRPC_COMPUTE_ENGINE_TOKEN_REFRESH_THRESHOLD_SECS 60 |
| 51 | #define GRPC_COMPUTE_ENGINE_METADATA_HOST "metadata" |
| 52 | #define GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH \ |
| 53 | "computeMetadata/v1/instance/service-accounts/default/token" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 54 | |
| 55 | /* -- Common. -- */ |
| 56 | |
| 57 | typedef struct { |
| 58 | grpc_credentials *creds; |
| 59 | grpc_credentials_metadata_cb cb; |
| 60 | void *user_data; |
| 61 | } grpc_credentials_metadata_request; |
| 62 | |
| 63 | static grpc_credentials_metadata_request * |
| 64 | grpc_credentials_metadata_request_create(grpc_credentials *creds, |
| 65 | grpc_credentials_metadata_cb cb, |
| 66 | void *user_data) { |
| 67 | grpc_credentials_metadata_request *r = |
| 68 | gpr_malloc(sizeof(grpc_credentials_metadata_request)); |
| 69 | r->creds = grpc_credentials_ref(creds); |
| 70 | r->cb = cb; |
| 71 | r->user_data = user_data; |
| 72 | return r; |
| 73 | } |
| 74 | |
| 75 | static void grpc_credentials_metadata_request_destroy( |
| 76 | grpc_credentials_metadata_request *r) { |
| 77 | grpc_credentials_unref(r->creds); |
| 78 | gpr_free(r); |
| 79 | } |
| 80 | |
| 81 | grpc_credentials *grpc_credentials_ref(grpc_credentials *creds) { |
| 82 | if (creds == NULL) return NULL; |
| 83 | gpr_ref(&creds->refcount); |
| 84 | return creds; |
| 85 | } |
| 86 | |
| 87 | void grpc_credentials_unref(grpc_credentials *creds) { |
| 88 | if (creds == NULL) return; |
| 89 | if (gpr_unref(&creds->refcount)) creds->vtable->destroy(creds); |
| 90 | } |
| 91 | |
| 92 | void grpc_credentials_release(grpc_credentials *creds) { |
| 93 | grpc_credentials_unref(creds); |
| 94 | } |
| 95 | |
| 96 | int grpc_credentials_has_request_metadata(grpc_credentials *creds) { |
| 97 | if (creds == NULL) return 0; |
| 98 | return creds->vtable->has_request_metadata(creds); |
| 99 | } |
| 100 | |
| 101 | int grpc_credentials_has_request_metadata_only(grpc_credentials *creds) { |
| 102 | if (creds == NULL) return 0; |
| 103 | return creds->vtable->has_request_metadata_only(creds); |
| 104 | } |
| 105 | |
| 106 | void grpc_credentials_get_request_metadata(grpc_credentials *creds, |
| 107 | grpc_credentials_metadata_cb cb, |
| 108 | void *user_data) { |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame^] | 109 | if (creds == NULL || !grpc_credentials_has_request_metadata(creds) || |
| 110 | creds->vtable->get_request_metadata == NULL) { |
| 111 | if (cb != NULL) { |
| 112 | cb(user_data, NULL, 0, GRPC_CREDENTIALS_OK); |
| 113 | } |
| 114 | return; |
| 115 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 116 | creds->vtable->get_request_metadata(creds, cb, user_data); |
| 117 | } |
| 118 | |
| 119 | void grpc_server_credentials_release(grpc_server_credentials *creds) { |
| 120 | if (creds == NULL) return; |
| 121 | creds->vtable->destroy(creds); |
| 122 | } |
| 123 | |
| 124 | /* -- Ssl credentials. -- */ |
| 125 | |
| 126 | typedef struct { |
| 127 | grpc_credentials base; |
| 128 | grpc_ssl_config config; |
| 129 | } grpc_ssl_credentials; |
| 130 | |
| 131 | typedef struct { |
| 132 | grpc_server_credentials base; |
| 133 | grpc_ssl_config config; |
| 134 | } grpc_ssl_server_credentials; |
| 135 | |
| 136 | static void ssl_destroy(grpc_credentials *creds) { |
| 137 | grpc_ssl_credentials *c = (grpc_ssl_credentials *)creds; |
| 138 | if (c->config.pem_root_certs != NULL) gpr_free(c->config.pem_root_certs); |
| 139 | if (c->config.pem_private_key != NULL) gpr_free(c->config.pem_private_key); |
| 140 | if (c->config.pem_cert_chain != NULL) gpr_free(c->config.pem_cert_chain); |
| 141 | gpr_free(creds); |
| 142 | } |
| 143 | |
| 144 | static void ssl_server_destroy(grpc_server_credentials *creds) { |
| 145 | grpc_ssl_server_credentials *c = (grpc_ssl_server_credentials *)creds; |
| 146 | if (c->config.pem_root_certs != NULL) gpr_free(c->config.pem_root_certs); |
| 147 | if (c->config.pem_private_key != NULL) gpr_free(c->config.pem_private_key); |
| 148 | if (c->config.pem_cert_chain != NULL) gpr_free(c->config.pem_cert_chain); |
| 149 | gpr_free(creds); |
| 150 | } |
| 151 | |
| 152 | static int ssl_has_request_metadata(const grpc_credentials *creds) { return 0; } |
| 153 | |
| 154 | static int ssl_has_request_metadata_only(const grpc_credentials *creds) { |
| 155 | return 0; |
| 156 | } |
| 157 | |
| 158 | static grpc_credentials_vtable ssl_vtable = { |
| 159 | ssl_destroy, ssl_has_request_metadata, ssl_has_request_metadata_only, NULL}; |
| 160 | |
| 161 | static grpc_server_credentials_vtable ssl_server_vtable = {ssl_server_destroy}; |
| 162 | |
| 163 | const grpc_ssl_config *grpc_ssl_credentials_get_config( |
| 164 | const grpc_credentials *creds) { |
| 165 | if (creds == NULL || strcmp(creds->type, GRPC_CREDENTIALS_TYPE_SSL)) { |
| 166 | return NULL; |
| 167 | } else { |
| 168 | grpc_ssl_credentials *c = (grpc_ssl_credentials *)creds; |
| 169 | return &c->config; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | const grpc_ssl_config *grpc_ssl_server_credentials_get_config( |
| 174 | const grpc_server_credentials *creds) { |
| 175 | if (creds == NULL || strcmp(creds->type, GRPC_CREDENTIALS_TYPE_SSL)) { |
| 176 | return NULL; |
| 177 | } else { |
| 178 | grpc_ssl_server_credentials *c = (grpc_ssl_server_credentials *)creds; |
| 179 | return &c->config; |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | static void ssl_build_config(const unsigned char *pem_root_certs, |
| 184 | size_t pem_root_certs_size, |
| 185 | const unsigned char *pem_private_key, |
| 186 | size_t pem_private_key_size, |
| 187 | const unsigned char *pem_cert_chain, |
| 188 | size_t pem_cert_chain_size, |
| 189 | grpc_ssl_config *config) { |
| 190 | if (pem_root_certs != NULL) { |
| 191 | config->pem_root_certs = gpr_malloc(pem_root_certs_size); |
| 192 | memcpy(config->pem_root_certs, pem_root_certs, pem_root_certs_size); |
| 193 | config->pem_root_certs_size = pem_root_certs_size; |
| 194 | } |
| 195 | if (pem_private_key != NULL) { |
| 196 | config->pem_private_key = gpr_malloc(pem_private_key_size); |
| 197 | memcpy(config->pem_private_key, pem_private_key, pem_private_key_size); |
| 198 | config->pem_private_key_size = pem_private_key_size; |
| 199 | } |
| 200 | if (pem_cert_chain != NULL) { |
| 201 | config->pem_cert_chain = gpr_malloc(pem_cert_chain_size); |
| 202 | memcpy(config->pem_cert_chain, pem_cert_chain, pem_cert_chain_size); |
| 203 | config->pem_cert_chain_size = pem_cert_chain_size; |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | grpc_credentials *grpc_ssl_credentials_create( |
| 208 | const unsigned char *pem_root_certs, size_t pem_root_certs_size, |
| 209 | const unsigned char *pem_private_key, size_t pem_private_key_size, |
| 210 | const unsigned char *pem_cert_chain, size_t pem_cert_chain_size) { |
| 211 | grpc_ssl_credentials *c = gpr_malloc(sizeof(grpc_ssl_credentials)); |
| 212 | memset(c, 0, sizeof(grpc_ssl_credentials)); |
| 213 | c->base.type = GRPC_CREDENTIALS_TYPE_SSL; |
| 214 | c->base.vtable = &ssl_vtable; |
| 215 | gpr_ref_init(&c->base.refcount, 1); |
| 216 | ssl_build_config(pem_root_certs, pem_root_certs_size, pem_private_key, |
| 217 | pem_private_key_size, pem_cert_chain, pem_cert_chain_size, |
| 218 | &c->config); |
| 219 | return &c->base; |
| 220 | } |
| 221 | |
| 222 | grpc_server_credentials *grpc_ssl_server_credentials_create( |
| 223 | const unsigned char *pem_root_certs, size_t pem_root_certs_size, |
| 224 | const unsigned char *pem_private_key, size_t pem_private_key_size, |
| 225 | const unsigned char *pem_cert_chain, size_t pem_cert_chain_size) { |
| 226 | grpc_ssl_server_credentials *c = |
| 227 | gpr_malloc(sizeof(grpc_ssl_server_credentials)); |
| 228 | memset(c, 0, sizeof(grpc_ssl_server_credentials)); |
| 229 | c->base.type = GRPC_CREDENTIALS_TYPE_SSL; |
| 230 | c->base.vtable = &ssl_server_vtable; |
| 231 | ssl_build_config(pem_root_certs, pem_root_certs_size, pem_private_key, |
| 232 | pem_private_key_size, pem_cert_chain, pem_cert_chain_size, |
| 233 | &c->config); |
| 234 | return &c->base; |
| 235 | } |
| 236 | |
| 237 | /* -- ComputeEngine credentials. -- */ |
| 238 | |
| 239 | typedef struct { |
| 240 | grpc_credentials base; |
| 241 | gpr_mu mu; |
| 242 | grpc_mdctx *md_ctx; |
| 243 | grpc_mdelem *access_token_md; |
| 244 | gpr_timespec token_expiration; |
| 245 | } grpc_compute_engine_credentials; |
| 246 | |
| 247 | static void compute_engine_destroy(grpc_credentials *creds) { |
| 248 | grpc_compute_engine_credentials *c = (grpc_compute_engine_credentials *)creds; |
| 249 | if (c->access_token_md != NULL) { |
| 250 | grpc_mdelem_unref(c->access_token_md); |
| 251 | } |
| 252 | gpr_mu_destroy(&c->mu); |
| 253 | grpc_mdctx_orphan(c->md_ctx); |
| 254 | gpr_free(c); |
| 255 | } |
| 256 | |
| 257 | static int compute_engine_has_request_metadata(const grpc_credentials *creds) { |
| 258 | return 1; |
| 259 | } |
| 260 | |
| 261 | static int compute_engine_has_request_metadata_only( |
| 262 | const grpc_credentials *creds) { |
| 263 | return 1; |
| 264 | } |
| 265 | |
| 266 | grpc_credentials_status grpc_compute_engine_credentials_parse_server_response( |
| 267 | const grpc_httpcli_response *response, grpc_mdctx *ctx, |
| 268 | grpc_mdelem **token_elem, gpr_timespec *token_lifetime) { |
| 269 | char *null_terminated_body = NULL; |
| 270 | char *new_access_token = NULL; |
| 271 | grpc_credentials_status status = GRPC_CREDENTIALS_OK; |
| 272 | cJSON *json = NULL; |
| 273 | |
| 274 | if (response->status != 200) { |
| 275 | gpr_log(GPR_ERROR, "Call to metadata server ended with error %d", |
| 276 | response->status); |
| 277 | status = GRPC_CREDENTIALS_ERROR; |
| 278 | goto end; |
| 279 | } else { |
| 280 | cJSON *access_token = NULL; |
| 281 | cJSON *token_type = NULL; |
| 282 | cJSON *expires_in = NULL; |
| 283 | size_t new_access_token_size = 0; |
| 284 | null_terminated_body = gpr_malloc(response->body_length + 1); |
| 285 | null_terminated_body[response->body_length] = '\0'; |
| 286 | memcpy(null_terminated_body, response->body, response->body_length); |
| 287 | json = cJSON_Parse(null_terminated_body); |
| 288 | if (json == NULL) { |
| 289 | gpr_log(GPR_ERROR, "Could not parse JSON from %s", null_terminated_body); |
| 290 | status = GRPC_CREDENTIALS_ERROR; |
| 291 | goto end; |
| 292 | } |
| 293 | if (json->type != cJSON_Object) { |
| 294 | gpr_log(GPR_ERROR, "Response should be a JSON object"); |
| 295 | status = GRPC_CREDENTIALS_ERROR; |
| 296 | goto end; |
| 297 | } |
| 298 | access_token = cJSON_GetObjectItem(json, "access_token"); |
| 299 | if (access_token == NULL || access_token->type != cJSON_String) { |
| 300 | gpr_log(GPR_ERROR, "Missing or invalid access_token in JSON."); |
| 301 | status = GRPC_CREDENTIALS_ERROR; |
| 302 | goto end; |
| 303 | } |
| 304 | token_type = cJSON_GetObjectItem(json, "token_type"); |
| 305 | if (token_type == NULL || token_type->type != cJSON_String) { |
| 306 | gpr_log(GPR_ERROR, "Missing or invalid token_type in JSON."); |
| 307 | status = GRPC_CREDENTIALS_ERROR; |
| 308 | goto end; |
| 309 | } |
| 310 | expires_in = cJSON_GetObjectItem(json, "expires_in"); |
| 311 | if (expires_in == NULL || expires_in->type != cJSON_Number) { |
| 312 | gpr_log(GPR_ERROR, "Missing or invalid expires_in in JSON."); |
| 313 | status = GRPC_CREDENTIALS_ERROR; |
| 314 | goto end; |
| 315 | } |
| 316 | new_access_token_size = strlen(token_type->valuestring) + 1 + |
| 317 | strlen(access_token->valuestring) + 1; |
| 318 | new_access_token = gpr_malloc(new_access_token_size); |
| 319 | /* C89 does not have snprintf :(. */ |
| 320 | sprintf(new_access_token, "%s %s", token_type->valuestring, |
| 321 | access_token->valuestring); |
| 322 | token_lifetime->tv_sec = expires_in->valueint; |
| 323 | token_lifetime->tv_nsec = 0; |
| 324 | if (*token_elem != NULL) grpc_mdelem_unref(*token_elem); |
| 325 | *token_elem = grpc_mdelem_from_strings(ctx, GRPC_AUTHORIZATION_METADATA_KEY, |
| 326 | new_access_token); |
| 327 | status = GRPC_CREDENTIALS_OK; |
| 328 | } |
| 329 | |
| 330 | end: |
| 331 | if (status != GRPC_CREDENTIALS_OK && (*token_elem != NULL)) { |
| 332 | grpc_mdelem_unref(*token_elem); |
| 333 | *token_elem = NULL; |
| 334 | } |
| 335 | if (null_terminated_body != NULL) gpr_free(null_terminated_body); |
| 336 | if (new_access_token != NULL) gpr_free(new_access_token); |
| 337 | if (json != NULL) cJSON_Delete(json); |
| 338 | return status; |
| 339 | } |
| 340 | |
| 341 | static void on_compute_engine_token_response( |
| 342 | void *user_data, const grpc_httpcli_response *response) { |
| 343 | grpc_credentials_metadata_request *r = |
| 344 | (grpc_credentials_metadata_request *)user_data; |
| 345 | grpc_compute_engine_credentials *c = |
| 346 | (grpc_compute_engine_credentials *)r->creds; |
| 347 | gpr_timespec token_lifetime; |
| 348 | grpc_credentials_status status; |
| 349 | |
| 350 | gpr_mu_lock(&c->mu); |
| 351 | status = grpc_compute_engine_credentials_parse_server_response( |
| 352 | response, c->md_ctx, &c->access_token_md, &token_lifetime); |
| 353 | if (status == GRPC_CREDENTIALS_OK) { |
| 354 | c->token_expiration = gpr_time_add(gpr_now(), token_lifetime); |
| 355 | r->cb(r->user_data, &c->access_token_md, 1, status); |
| 356 | } else { |
| 357 | c->token_expiration = gpr_inf_past; |
| 358 | r->cb(r->user_data, NULL, 0, status); |
| 359 | } |
| 360 | gpr_mu_unlock(&c->mu); |
| 361 | grpc_credentials_metadata_request_destroy(r); |
| 362 | } |
| 363 | |
| 364 | static void compute_engine_get_request_metadata(grpc_credentials *creds, |
| 365 | grpc_credentials_metadata_cb cb, |
| 366 | void *user_data) { |
| 367 | grpc_compute_engine_credentials *c = (grpc_compute_engine_credentials *)creds; |
| 368 | gpr_timespec refresh_threshold = { |
| 369 | GRPC_COMPUTE_ENGINE_TOKEN_REFRESH_THRESHOLD_SECS, 0}; |
| 370 | |
| 371 | gpr_mu_lock(&c->mu); |
| 372 | if (c->access_token_md == NULL || |
| 373 | (gpr_time_cmp(gpr_time_sub(gpr_now(), c->token_expiration), |
| 374 | refresh_threshold) < 0)) { |
| 375 | grpc_httpcli_header header = {"Metadata-Flavor", "Google"}; |
| 376 | grpc_httpcli_request request; |
| 377 | request.host = GRPC_COMPUTE_ENGINE_METADATA_HOST; |
| 378 | request.path = GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH; |
| 379 | request.hdr_count = 1; |
| 380 | request.hdrs = &header; |
| 381 | grpc_httpcli_get( |
| 382 | &request, gpr_time_add(gpr_now(), refresh_threshold), grpc_surface_em(), |
| 383 | on_compute_engine_token_response, |
| 384 | grpc_credentials_metadata_request_create(creds, cb, user_data)); |
| 385 | } else { |
| 386 | cb(user_data, &c->access_token_md, 1, GRPC_CREDENTIALS_OK); |
| 387 | } |
| 388 | gpr_mu_unlock(&c->mu); |
| 389 | } |
| 390 | |
| 391 | static grpc_credentials_vtable compute_engine_vtable = { |
| 392 | compute_engine_destroy, compute_engine_has_request_metadata, |
| 393 | compute_engine_has_request_metadata_only, |
| 394 | compute_engine_get_request_metadata}; |
| 395 | |
| 396 | grpc_credentials *grpc_compute_engine_credentials_create(void) { |
| 397 | grpc_compute_engine_credentials *c = |
| 398 | gpr_malloc(sizeof(grpc_compute_engine_credentials)); |
| 399 | memset(c, 0, sizeof(grpc_compute_engine_credentials)); |
| 400 | c->base.type = GRPC_CREDENTIALS_TYPE_OAUTH2; |
| 401 | c->base.vtable = &compute_engine_vtable; |
| 402 | gpr_ref_init(&c->base.refcount, 1); |
| 403 | gpr_mu_init(&c->mu); |
| 404 | c->md_ctx = grpc_mdctx_create(); |
| 405 | c->token_expiration = gpr_inf_past; |
| 406 | return &c->base; |
| 407 | } |
| 408 | |
| 409 | /* -- Fake Oauth2 credentials. -- */ |
| 410 | |
| 411 | typedef struct { |
| 412 | grpc_credentials base; |
| 413 | grpc_mdctx *md_ctx; |
| 414 | grpc_mdelem *access_token_md; |
| 415 | int is_async; |
| 416 | } grpc_fake_oauth2_credentials; |
| 417 | |
| 418 | static void fake_oauth2_destroy(grpc_credentials *creds) { |
| 419 | grpc_fake_oauth2_credentials *c = (grpc_fake_oauth2_credentials *)creds; |
| 420 | if (c->access_token_md != NULL) { |
| 421 | grpc_mdelem_unref(c->access_token_md); |
| 422 | } |
| 423 | grpc_mdctx_orphan(c->md_ctx); |
| 424 | gpr_free(c); |
| 425 | } |
| 426 | |
| 427 | static int fake_oauth2_has_request_metadata(const grpc_credentials *creds) { |
| 428 | return 1; |
| 429 | } |
| 430 | |
| 431 | static int fake_oauth2_has_request_metadata_only( |
| 432 | const grpc_credentials *creds) { |
| 433 | return 1; |
| 434 | } |
| 435 | |
| 436 | void on_simulated_token_fetch_done(void *user_data, grpc_em_cb_status status) { |
| 437 | grpc_credentials_metadata_request *r = |
| 438 | (grpc_credentials_metadata_request *)user_data; |
| 439 | grpc_fake_oauth2_credentials *c = (grpc_fake_oauth2_credentials *)r->creds; |
| 440 | GPR_ASSERT(status == GRPC_CALLBACK_SUCCESS); |
| 441 | r->cb(r->user_data, &c->access_token_md, 1, GRPC_CREDENTIALS_OK); |
| 442 | grpc_credentials_metadata_request_destroy(r); |
| 443 | } |
| 444 | |
| 445 | static void fake_oauth2_get_request_metadata(grpc_credentials *creds, |
| 446 | grpc_credentials_metadata_cb cb, |
| 447 | void *user_data) { |
| 448 | grpc_fake_oauth2_credentials *c = (grpc_fake_oauth2_credentials *)creds; |
| 449 | |
| 450 | if (c->is_async) { |
| 451 | GPR_ASSERT(grpc_em_add_callback(grpc_surface_em(), |
| 452 | on_simulated_token_fetch_done, |
| 453 | grpc_credentials_metadata_request_create( |
| 454 | creds, cb, user_data)) == GRPC_EM_OK); |
| 455 | } else { |
| 456 | cb(user_data, &c->access_token_md, 1, GRPC_CREDENTIALS_OK); |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | static grpc_credentials_vtable fake_oauth2_vtable = { |
| 461 | fake_oauth2_destroy, fake_oauth2_has_request_metadata, |
| 462 | fake_oauth2_has_request_metadata_only, fake_oauth2_get_request_metadata}; |
| 463 | |
| 464 | grpc_credentials *grpc_fake_oauth2_credentials_create( |
| 465 | const char *token_md_value, int is_async) { |
| 466 | grpc_fake_oauth2_credentials *c = |
| 467 | gpr_malloc(sizeof(grpc_fake_oauth2_credentials)); |
| 468 | memset(c, 0, sizeof(grpc_fake_oauth2_credentials)); |
| 469 | c->base.type = GRPC_CREDENTIALS_TYPE_OAUTH2; |
| 470 | c->base.vtable = &fake_oauth2_vtable; |
| 471 | gpr_ref_init(&c->base.refcount, 1); |
| 472 | c->md_ctx = grpc_mdctx_create(); |
| 473 | c->access_token_md = grpc_mdelem_from_strings( |
| 474 | c->md_ctx, GRPC_AUTHORIZATION_METADATA_KEY, token_md_value); |
| 475 | c->is_async = is_async; |
| 476 | return &c->base; |
| 477 | } |
| 478 | |
| 479 | /* -- Fake transport security credentials. -- */ |
| 480 | |
| 481 | static void fake_transport_security_credentials_destroy( |
| 482 | grpc_credentials *creds) { |
| 483 | gpr_free(creds); |
| 484 | } |
| 485 | |
| 486 | static void fake_transport_security_server_credentials_destroy( |
| 487 | grpc_server_credentials *creds) { |
| 488 | gpr_free(creds); |
| 489 | } |
| 490 | |
| 491 | static int fake_transport_security_has_request_metadata( |
| 492 | const grpc_credentials *creds) { |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | static int fake_transport_security_has_request_metadata_only( |
| 497 | const grpc_credentials *creds) { |
| 498 | return 0; |
| 499 | } |
| 500 | |
| 501 | static grpc_credentials_vtable fake_transport_security_credentials_vtable = { |
| 502 | fake_transport_security_credentials_destroy, |
| 503 | fake_transport_security_has_request_metadata, |
| 504 | fake_transport_security_has_request_metadata_only, NULL}; |
| 505 | |
| 506 | static grpc_server_credentials_vtable |
| 507 | fake_transport_security_server_credentials_vtable = { |
| 508 | fake_transport_security_server_credentials_destroy}; |
| 509 | |
| 510 | grpc_credentials *grpc_fake_transport_security_credentials_create(void) { |
| 511 | grpc_credentials *c = gpr_malloc(sizeof(grpc_credentials)); |
| 512 | memset(c, 0, sizeof(grpc_credentials)); |
| 513 | c->type = GRPC_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY; |
| 514 | c->vtable = &fake_transport_security_credentials_vtable; |
| 515 | gpr_ref_init(&c->refcount, 1); |
| 516 | return c; |
| 517 | } |
| 518 | |
| 519 | grpc_server_credentials * |
| 520 | grpc_fake_transport_security_server_credentials_create() { |
| 521 | grpc_server_credentials *c = gpr_malloc(sizeof(grpc_server_credentials)); |
| 522 | memset(c, 0, sizeof(grpc_server_credentials)); |
| 523 | c->type = GRPC_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY; |
| 524 | c->vtable = &fake_transport_security_server_credentials_vtable; |
| 525 | return c; |
| 526 | } |
| 527 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame^] | 528 | /* -- Composite credentials. -- */ |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 529 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame^] | 530 | typedef struct { |
| 531 | grpc_credentials base; |
| 532 | grpc_credentials_array inner; |
| 533 | } grpc_composite_credentials; |
| 534 | |
| 535 | typedef struct { |
| 536 | grpc_composite_credentials *composite_creds; |
| 537 | size_t creds_index; |
| 538 | grpc_mdelem **md_elems; |
| 539 | size_t num_md; |
| 540 | void *user_data; |
| 541 | grpc_credentials_metadata_cb cb; |
| 542 | } grpc_composite_credentials_metadata_context; |
| 543 | |
| 544 | static void composite_destroy(grpc_credentials *creds) { |
| 545 | grpc_composite_credentials *c = (grpc_composite_credentials *)creds; |
| 546 | size_t i; |
| 547 | for (i = 0; i < c->inner.num_creds; i++) { |
| 548 | grpc_credentials_unref(c->inner.creds_array[i]); |
| 549 | } |
| 550 | gpr_free(c->inner.creds_array); |
| 551 | gpr_free(creds); |
| 552 | } |
| 553 | |
| 554 | static int composite_has_request_metadata(const grpc_credentials *creds) { |
| 555 | const grpc_composite_credentials *c = |
| 556 | (const grpc_composite_credentials *)creds; |
| 557 | size_t i; |
| 558 | for (i = 0; i < c->inner.num_creds; i++) { |
| 559 | if (grpc_credentials_has_request_metadata(c->inner.creds_array[i])) { |
| 560 | return 1; |
| 561 | } |
| 562 | } |
| 563 | return 0; |
| 564 | } |
| 565 | |
| 566 | static int composite_has_request_metadata_only(const grpc_credentials *creds) { |
| 567 | const grpc_composite_credentials *c = |
| 568 | (const grpc_composite_credentials *)creds; |
| 569 | size_t i; |
| 570 | for (i = 0; i < c->inner.num_creds; i++) { |
| 571 | if (!grpc_credentials_has_request_metadata_only(c->inner.creds_array[i])) { |
| 572 | return 0; |
| 573 | } |
| 574 | } |
| 575 | return 1; |
| 576 | } |
| 577 | |
| 578 | static void composite_md_context_destroy( |
| 579 | grpc_composite_credentials_metadata_context *ctx) { |
| 580 | size_t i; |
| 581 | for (i = 0; i < ctx->num_md; i++) { |
| 582 | grpc_mdelem_unref(ctx->md_elems[i]); |
| 583 | } |
| 584 | gpr_free(ctx->md_elems); |
| 585 | gpr_free(ctx); |
| 586 | } |
| 587 | |
| 588 | static void composite_metadata_cb(void *user_data, grpc_mdelem **md_elems, |
| 589 | size_t num_md, |
| 590 | grpc_credentials_status status) { |
| 591 | grpc_composite_credentials_metadata_context *ctx = |
| 592 | (grpc_composite_credentials_metadata_context *)user_data; |
| 593 | size_t i; |
| 594 | if (status != GRPC_CREDENTIALS_OK) { |
| 595 | ctx->cb(ctx->user_data, NULL, 0, status); |
| 596 | return; |
| 597 | } |
| 598 | |
| 599 | /* Copy the metadata in the context. */ |
| 600 | if (num_md > 0) { |
| 601 | ctx->md_elems = gpr_realloc(ctx->md_elems, |
| 602 | (ctx->num_md + num_md) * sizeof(grpc_mdelem *)); |
| 603 | for (i = 0; i < num_md; i++) { |
| 604 | ctx->md_elems[i + ctx->num_md] = grpc_mdelem_ref(md_elems[i]); |
| 605 | } |
| 606 | ctx->num_md += num_md; |
| 607 | } |
| 608 | |
| 609 | /* See if we need to get some more metadata. */ |
| 610 | while (ctx->creds_index < ctx->composite_creds->inner.num_creds) { |
| 611 | grpc_credentials *inner_creds = |
| 612 | ctx->composite_creds->inner.creds_array[ctx->creds_index++]; |
| 613 | if (grpc_credentials_has_request_metadata(inner_creds)) { |
| 614 | grpc_credentials_get_request_metadata(inner_creds, composite_metadata_cb, |
| 615 | ctx); |
| 616 | return; |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | /* We're done!. */ |
| 621 | ctx->cb(ctx->user_data, ctx->md_elems, ctx->num_md, GRPC_CREDENTIALS_OK); |
| 622 | composite_md_context_destroy(ctx); |
| 623 | } |
| 624 | |
| 625 | static void composite_get_request_metadata(grpc_credentials *creds, |
| 626 | grpc_credentials_metadata_cb cb, |
| 627 | void *user_data) { |
| 628 | grpc_composite_credentials *c = (grpc_composite_credentials *)creds; |
| 629 | grpc_composite_credentials_metadata_context *ctx; |
| 630 | if (!grpc_credentials_has_request_metadata(creds)) { |
| 631 | cb(user_data, NULL, 0, GRPC_CREDENTIALS_OK); |
| 632 | return; |
| 633 | } |
| 634 | ctx = gpr_malloc(sizeof(grpc_composite_credentials_metadata_context)); |
| 635 | memset(ctx, 0, sizeof(grpc_composite_credentials_metadata_context)); |
| 636 | ctx->user_data = user_data; |
| 637 | ctx->cb = cb; |
| 638 | ctx->composite_creds = c; |
| 639 | while (ctx->creds_index < c->inner.num_creds) { |
| 640 | grpc_credentials *inner_creds = c->inner.creds_array[ctx->creds_index++]; |
| 641 | if (grpc_credentials_has_request_metadata(inner_creds)) { |
| 642 | grpc_credentials_get_request_metadata(inner_creds, composite_metadata_cb, |
| 643 | ctx); |
| 644 | return; |
| 645 | } |
| 646 | } |
| 647 | GPR_ASSERT(0); /* Should have exited before. */ |
| 648 | } |
| 649 | |
| 650 | static grpc_credentials_vtable composite_credentials_vtable = { |
| 651 | composite_destroy, composite_has_request_metadata, |
| 652 | composite_has_request_metadata_only, composite_get_request_metadata}; |
| 653 | |
| 654 | static grpc_credentials_array get_creds_array(grpc_credentials **creds_addr) { |
| 655 | grpc_credentials_array result; |
| 656 | grpc_credentials *creds = *creds_addr; |
| 657 | result.creds_array = creds_addr; |
| 658 | result.num_creds = 1; |
| 659 | if (!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE)) { |
| 660 | result = *grpc_composite_credentials_get_credentials(creds); |
| 661 | } |
| 662 | return result; |
| 663 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 664 | |
| 665 | grpc_credentials *grpc_composite_credentials_create(grpc_credentials *creds1, |
| 666 | grpc_credentials *creds2) { |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame^] | 667 | size_t i; |
| 668 | grpc_credentials_array creds1_array; |
| 669 | grpc_credentials_array creds2_array; |
| 670 | grpc_composite_credentials *c; |
| 671 | GPR_ASSERT(creds1 != NULL); |
| 672 | GPR_ASSERT(creds2 != NULL); |
| 673 | c = gpr_malloc(sizeof(grpc_composite_credentials)); |
| 674 | memset(c, 0, sizeof(grpc_composite_credentials)); |
| 675 | c->base.type = GRPC_CREDENTIALS_TYPE_COMPOSITE; |
| 676 | c->base.vtable = &composite_credentials_vtable; |
| 677 | gpr_ref_init(&c->base.refcount, 1); |
| 678 | creds1_array = get_creds_array(&creds1); |
| 679 | creds2_array = get_creds_array(&creds2); |
| 680 | c->inner.num_creds = creds1_array.num_creds + creds2_array.num_creds; |
| 681 | c->inner.creds_array = |
| 682 | gpr_malloc(c->inner.num_creds * sizeof(grpc_credentials *)); |
| 683 | for (i = 0; i < creds1_array.num_creds; i++) { |
| 684 | c->inner.creds_array[i] = grpc_credentials_ref(creds1_array.creds_array[i]); |
| 685 | } |
| 686 | for (i = 0; i < creds2_array.num_creds; i++) { |
| 687 | c->inner.creds_array[i + creds1_array.num_creds] = |
| 688 | grpc_credentials_ref(creds2_array.creds_array[i]); |
| 689 | } |
| 690 | return &c->base; |
| 691 | } |
| 692 | |
| 693 | const grpc_credentials_array *grpc_composite_credentials_get_credentials( |
| 694 | grpc_credentials *creds) { |
| 695 | const grpc_composite_credentials *c = |
| 696 | (const grpc_composite_credentials *)creds; |
| 697 | GPR_ASSERT(!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE)); |
| 698 | return &c->inner; |
| 699 | } |
| 700 | |
| 701 | /* -- IAM credentials. -- */ |
| 702 | |
| 703 | typedef struct { |
| 704 | grpc_credentials base; |
| 705 | grpc_mdctx *md_ctx; |
| 706 | grpc_mdelem *token_md; |
| 707 | grpc_mdelem *authority_selector_md; |
| 708 | } grpc_iam_credentials; |
| 709 | |
| 710 | static void iam_destroy(grpc_credentials *creds) { |
| 711 | grpc_iam_credentials *c = (grpc_iam_credentials *)creds; |
| 712 | grpc_mdelem_unref(c->token_md); |
| 713 | grpc_mdelem_unref(c->authority_selector_md); |
| 714 | grpc_mdctx_orphan(c->md_ctx); |
| 715 | gpr_free(c); |
| 716 | } |
| 717 | |
| 718 | static int iam_has_request_metadata(const grpc_credentials *creds) { return 1; } |
| 719 | |
| 720 | static int iam_has_request_metadata_only(const grpc_credentials *creds) { |
| 721 | return 1; |
| 722 | } |
| 723 | |
| 724 | static void iam_get_request_metadata(grpc_credentials *creds, |
| 725 | grpc_credentials_metadata_cb cb, |
| 726 | void *user_data) { |
| 727 | grpc_iam_credentials *c = (grpc_iam_credentials *)creds; |
| 728 | grpc_mdelem *md_array[2]; |
| 729 | md_array[0] = c->token_md; |
| 730 | md_array[1] = c->authority_selector_md; |
| 731 | cb(user_data, md_array, 2, GRPC_CREDENTIALS_OK); |
| 732 | } |
| 733 | |
| 734 | static grpc_credentials_vtable iam_vtable = { |
| 735 | iam_destroy, iam_has_request_metadata, iam_has_request_metadata_only, |
| 736 | iam_get_request_metadata}; |
| 737 | |
| 738 | grpc_credentials *grpc_iam_credentials_create(const char *token, |
| 739 | const char *authority_selector) { |
| 740 | grpc_iam_credentials *c; |
| 741 | GPR_ASSERT(token != NULL); |
| 742 | GPR_ASSERT(authority_selector != NULL); |
| 743 | c = gpr_malloc(sizeof(grpc_iam_credentials)); |
| 744 | memset(c, 0, sizeof(grpc_iam_credentials)); |
| 745 | c->base.type = GRPC_CREDENTIALS_TYPE_IAM; |
| 746 | c->base.vtable = &iam_vtable; |
| 747 | gpr_ref_init(&c->base.refcount, 1); |
| 748 | c->md_ctx = grpc_mdctx_create(); |
| 749 | c->token_md = grpc_mdelem_from_strings( |
| 750 | c->md_ctx, GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY, token); |
| 751 | c->authority_selector_md = grpc_mdelem_from_strings( |
| 752 | c->md_ctx, GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY, authority_selector); |
| 753 | return &c->base; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | /* -- Default credentials TODO(jboeuf). -- */ |
| 757 | |
| 758 | grpc_credentials *grpc_default_credentials_create(void) { return NULL; } |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame^] | 759 | |