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" |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 37 | #include "src/core/iomgr/iomgr.h" |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 38 | #include "src/core/security/json_token.h" |
Craig Tiller | 485d776 | 2015-01-23 12:54:05 -0800 | [diff] [blame^] | 39 | #include "src/core/support/string.h" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 40 | #include <grpc/support/alloc.h> |
| 41 | #include <grpc/support/log.h> |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 42 | #include <grpc/support/sync.h> |
| 43 | #include <grpc/support/time.h> |
| 44 | |
| 45 | #include "third_party/cJSON/cJSON.h" |
| 46 | |
| 47 | #include <string.h> |
| 48 | #include <stdio.h> |
| 49 | |
| 50 | /* -- Constants. -- */ |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 51 | |
| 52 | #define GRPC_OAUTH2_TOKEN_REFRESH_THRESHOLD_SECS 60 |
| 53 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 54 | #define GRPC_COMPUTE_ENGINE_METADATA_HOST "metadata" |
| 55 | #define GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH \ |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 56 | "/computeMetadata/v1/instance/service-accounts/default/token" |
| 57 | |
| 58 | #define GRPC_SERVICE_ACCOUNT_HOST "www.googleapis.com" |
| 59 | #define GRPC_SERVICE_ACCOUNT_TOKEN_PATH "/oauth2/v3/token" |
| 60 | #define GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX \ |
| 61 | "grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Ajwt-bearer&" \ |
| 62 | "assertion=" |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 63 | |
| 64 | /* -- Common. -- */ |
| 65 | |
| 66 | typedef struct { |
| 67 | grpc_credentials *creds; |
| 68 | grpc_credentials_metadata_cb cb; |
| 69 | void *user_data; |
| 70 | } grpc_credentials_metadata_request; |
| 71 | |
| 72 | static grpc_credentials_metadata_request * |
| 73 | grpc_credentials_metadata_request_create(grpc_credentials *creds, |
| 74 | grpc_credentials_metadata_cb cb, |
| 75 | void *user_data) { |
| 76 | grpc_credentials_metadata_request *r = |
| 77 | gpr_malloc(sizeof(grpc_credentials_metadata_request)); |
| 78 | r->creds = grpc_credentials_ref(creds); |
| 79 | r->cb = cb; |
| 80 | r->user_data = user_data; |
| 81 | return r; |
| 82 | } |
| 83 | |
| 84 | static void grpc_credentials_metadata_request_destroy( |
| 85 | grpc_credentials_metadata_request *r) { |
| 86 | grpc_credentials_unref(r->creds); |
| 87 | gpr_free(r); |
| 88 | } |
| 89 | |
| 90 | grpc_credentials *grpc_credentials_ref(grpc_credentials *creds) { |
| 91 | if (creds == NULL) return NULL; |
| 92 | gpr_ref(&creds->refcount); |
| 93 | return creds; |
| 94 | } |
| 95 | |
| 96 | void grpc_credentials_unref(grpc_credentials *creds) { |
| 97 | if (creds == NULL) return; |
| 98 | if (gpr_unref(&creds->refcount)) creds->vtable->destroy(creds); |
| 99 | } |
| 100 | |
| 101 | void grpc_credentials_release(grpc_credentials *creds) { |
| 102 | grpc_credentials_unref(creds); |
| 103 | } |
| 104 | |
| 105 | int grpc_credentials_has_request_metadata(grpc_credentials *creds) { |
| 106 | if (creds == NULL) return 0; |
| 107 | return creds->vtable->has_request_metadata(creds); |
| 108 | } |
| 109 | |
| 110 | int grpc_credentials_has_request_metadata_only(grpc_credentials *creds) { |
| 111 | if (creds == NULL) return 0; |
| 112 | return creds->vtable->has_request_metadata_only(creds); |
| 113 | } |
| 114 | |
| 115 | void grpc_credentials_get_request_metadata(grpc_credentials *creds, |
| 116 | grpc_credentials_metadata_cb cb, |
| 117 | void *user_data) { |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 118 | if (creds == NULL || !grpc_credentials_has_request_metadata(creds) || |
| 119 | creds->vtable->get_request_metadata == NULL) { |
| 120 | if (cb != NULL) { |
| 121 | cb(user_data, NULL, 0, GRPC_CREDENTIALS_OK); |
| 122 | } |
| 123 | return; |
| 124 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 125 | creds->vtable->get_request_metadata(creds, cb, user_data); |
| 126 | } |
| 127 | |
| 128 | void grpc_server_credentials_release(grpc_server_credentials *creds) { |
| 129 | if (creds == NULL) return; |
| 130 | creds->vtable->destroy(creds); |
| 131 | } |
| 132 | |
| 133 | /* -- Ssl credentials. -- */ |
| 134 | |
| 135 | typedef struct { |
| 136 | grpc_credentials base; |
| 137 | grpc_ssl_config config; |
| 138 | } grpc_ssl_credentials; |
| 139 | |
| 140 | typedef struct { |
| 141 | grpc_server_credentials base; |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 142 | grpc_ssl_server_config config; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 143 | } grpc_ssl_server_credentials; |
| 144 | |
| 145 | static void ssl_destroy(grpc_credentials *creds) { |
| 146 | grpc_ssl_credentials *c = (grpc_ssl_credentials *)creds; |
| 147 | if (c->config.pem_root_certs != NULL) gpr_free(c->config.pem_root_certs); |
| 148 | if (c->config.pem_private_key != NULL) gpr_free(c->config.pem_private_key); |
| 149 | if (c->config.pem_cert_chain != NULL) gpr_free(c->config.pem_cert_chain); |
| 150 | gpr_free(creds); |
| 151 | } |
| 152 | |
| 153 | static void ssl_server_destroy(grpc_server_credentials *creds) { |
| 154 | grpc_ssl_server_credentials *c = (grpc_ssl_server_credentials *)creds; |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 155 | size_t i; |
| 156 | for (i = 0; i < c->config.num_key_cert_pairs; i++) { |
| 157 | if (c->config.pem_private_keys[i] != NULL) { |
| 158 | gpr_free(c->config.pem_private_keys[i]); |
| 159 | } |
| 160 | if (c->config.pem_cert_chains[i]!= NULL) { |
| 161 | gpr_free(c->config.pem_cert_chains[i]); |
| 162 | } |
| 163 | } |
| 164 | if (c->config.pem_private_keys != NULL) gpr_free(c->config.pem_private_keys); |
| 165 | if (c->config.pem_private_keys_sizes != NULL) { |
| 166 | gpr_free(c->config.pem_private_keys_sizes); |
| 167 | } |
| 168 | if (c->config.pem_cert_chains != NULL) gpr_free(c->config.pem_cert_chains); |
| 169 | if (c->config.pem_cert_chains_sizes != NULL) { |
| 170 | gpr_free(c->config.pem_cert_chains_sizes); |
| 171 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 172 | if (c->config.pem_root_certs != NULL) gpr_free(c->config.pem_root_certs); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 173 | gpr_free(creds); |
| 174 | } |
| 175 | |
| 176 | static int ssl_has_request_metadata(const grpc_credentials *creds) { return 0; } |
| 177 | |
| 178 | static int ssl_has_request_metadata_only(const grpc_credentials *creds) { |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static grpc_credentials_vtable ssl_vtable = { |
| 183 | ssl_destroy, ssl_has_request_metadata, ssl_has_request_metadata_only, NULL}; |
| 184 | |
| 185 | static grpc_server_credentials_vtable ssl_server_vtable = {ssl_server_destroy}; |
| 186 | |
| 187 | const grpc_ssl_config *grpc_ssl_credentials_get_config( |
| 188 | const grpc_credentials *creds) { |
| 189 | if (creds == NULL || strcmp(creds->type, GRPC_CREDENTIALS_TYPE_SSL)) { |
| 190 | return NULL; |
| 191 | } else { |
| 192 | grpc_ssl_credentials *c = (grpc_ssl_credentials *)creds; |
| 193 | return &c->config; |
| 194 | } |
| 195 | } |
| 196 | |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 197 | const grpc_ssl_server_config *grpc_ssl_server_credentials_get_config( |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 198 | const grpc_server_credentials *creds) { |
| 199 | if (creds == NULL || strcmp(creds->type, GRPC_CREDENTIALS_TYPE_SSL)) { |
| 200 | return NULL; |
| 201 | } else { |
| 202 | grpc_ssl_server_credentials *c = (grpc_ssl_server_credentials *)creds; |
| 203 | return &c->config; |
| 204 | } |
| 205 | } |
| 206 | |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 207 | static void ssl_copy_key_material(const char *input, unsigned char **output, |
| 208 | size_t *output_size) { |
| 209 | *output_size = strlen(input); |
| 210 | *output = gpr_malloc(*output_size); |
| 211 | memcpy(*output, input, *output_size); |
| 212 | } |
| 213 | |
| 214 | static void ssl_build_config(const char *pem_root_certs, |
| 215 | grpc_ssl_pem_key_cert_pair *pem_key_cert_pair, |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 216 | grpc_ssl_config *config) { |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 217 | if (pem_root_certs == NULL) { |
| 218 | /* TODO(jboeuf): Get them from the environment. */ |
| 219 | gpr_log(GPR_ERROR, "Default SSL roots not yet implemented."); |
| 220 | } else { |
| 221 | ssl_copy_key_material(pem_root_certs, &config->pem_root_certs, |
| 222 | &config->pem_root_certs_size); |
| 223 | } |
| 224 | |
| 225 | if (pem_key_cert_pair != NULL) { |
| 226 | GPR_ASSERT(pem_key_cert_pair->private_key != NULL); |
| 227 | GPR_ASSERT(pem_key_cert_pair->cert_chain != NULL); |
| 228 | ssl_copy_key_material(pem_key_cert_pair->private_key, |
| 229 | &config->pem_private_key, |
| 230 | &config->pem_private_key_size); |
| 231 | ssl_copy_key_material(pem_key_cert_pair->cert_chain, |
| 232 | &config->pem_cert_chain, |
| 233 | &config->pem_cert_chain_size); |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | static void ssl_build_server_config( |
| 238 | const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs, |
| 239 | size_t num_key_cert_pairs, grpc_ssl_server_config *config) { |
| 240 | size_t i; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 241 | if (pem_root_certs != NULL) { |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 242 | ssl_copy_key_material(pem_root_certs, &config->pem_root_certs, |
| 243 | &config->pem_root_certs_size); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 244 | } |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 245 | if (num_key_cert_pairs > 0) { |
| 246 | GPR_ASSERT(pem_key_cert_pairs != NULL); |
| 247 | config->pem_private_keys = |
| 248 | gpr_malloc(num_key_cert_pairs * sizeof(unsigned char *)); |
| 249 | config->pem_cert_chains = |
| 250 | gpr_malloc(num_key_cert_pairs * sizeof(unsigned char *)); |
| 251 | config->pem_private_keys_sizes = |
| 252 | gpr_malloc(num_key_cert_pairs * sizeof(size_t)); |
| 253 | config->pem_cert_chains_sizes = |
| 254 | gpr_malloc(num_key_cert_pairs * sizeof(size_t)); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 255 | } |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 256 | config->num_key_cert_pairs = num_key_cert_pairs; |
| 257 | for (i = 0; i < num_key_cert_pairs; i++) { |
| 258 | GPR_ASSERT(pem_key_cert_pairs[i].private_key != NULL); |
| 259 | GPR_ASSERT(pem_key_cert_pairs[i].cert_chain != NULL); |
| 260 | ssl_copy_key_material(pem_key_cert_pairs[i].private_key, |
| 261 | &config->pem_private_keys[i], |
| 262 | &config->pem_private_keys_sizes[i]); |
| 263 | ssl_copy_key_material(pem_key_cert_pairs[i].cert_chain, |
| 264 | &config->pem_cert_chains[i], |
| 265 | &config->pem_cert_chains_sizes[i]); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 266 | } |
| 267 | } |
| 268 | |
| 269 | grpc_credentials *grpc_ssl_credentials_create( |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 270 | const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pair) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 271 | grpc_ssl_credentials *c = gpr_malloc(sizeof(grpc_ssl_credentials)); |
| 272 | memset(c, 0, sizeof(grpc_ssl_credentials)); |
| 273 | c->base.type = GRPC_CREDENTIALS_TYPE_SSL; |
| 274 | c->base.vtable = &ssl_vtable; |
| 275 | gpr_ref_init(&c->base.refcount, 1); |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 276 | ssl_build_config(pem_root_certs, pem_key_cert_pair, &c->config); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 277 | return &c->base; |
| 278 | } |
| 279 | |
| 280 | grpc_server_credentials *grpc_ssl_server_credentials_create( |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 281 | const char *pem_root_certs, grpc_ssl_pem_key_cert_pair *pem_key_cert_pairs, |
| 282 | size_t num_key_cert_pairs) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 283 | grpc_ssl_server_credentials *c = |
| 284 | gpr_malloc(sizeof(grpc_ssl_server_credentials)); |
| 285 | memset(c, 0, sizeof(grpc_ssl_server_credentials)); |
| 286 | c->base.type = GRPC_CREDENTIALS_TYPE_SSL; |
| 287 | c->base.vtable = &ssl_server_vtable; |
Julien Boeuf | 8fbcc43 | 2015-01-15 16:44:13 -0800 | [diff] [blame] | 288 | ssl_build_server_config(pem_root_certs, pem_key_cert_pairs, |
| 289 | num_key_cert_pairs, &c->config); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 290 | return &c->base; |
| 291 | } |
| 292 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 293 | /* -- Oauth2TokenFetcher credentials -- */ |
| 294 | |
| 295 | /* This object is a base for credentials that need to acquire an oauth2 token |
| 296 | from an http service. */ |
| 297 | |
| 298 | typedef void (*grpc_fetch_oauth2_func)(grpc_credentials_metadata_request *req, |
| 299 | grpc_httpcli_response_cb response_cb, |
| 300 | gpr_timespec deadline); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 301 | |
| 302 | typedef struct { |
| 303 | grpc_credentials base; |
| 304 | gpr_mu mu; |
| 305 | grpc_mdctx *md_ctx; |
| 306 | grpc_mdelem *access_token_md; |
| 307 | gpr_timespec token_expiration; |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 308 | grpc_fetch_oauth2_func fetch_func; |
| 309 | } grpc_oauth2_token_fetcher_credentials; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 310 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 311 | static void oauth2_token_fetcher_destroy(grpc_credentials *creds) { |
| 312 | grpc_oauth2_token_fetcher_credentials *c = |
| 313 | (grpc_oauth2_token_fetcher_credentials *)creds; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 314 | if (c->access_token_md != NULL) { |
| 315 | grpc_mdelem_unref(c->access_token_md); |
| 316 | } |
| 317 | gpr_mu_destroy(&c->mu); |
| 318 | grpc_mdctx_orphan(c->md_ctx); |
| 319 | gpr_free(c); |
| 320 | } |
| 321 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 322 | static int oauth2_token_fetcher_has_request_metadata( |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 323 | const grpc_credentials *creds) { |
| 324 | return 1; |
| 325 | } |
| 326 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 327 | static int oauth2_token_fetcher_has_request_metadata_only( |
| 328 | const grpc_credentials *creds) { |
| 329 | return 1; |
| 330 | } |
| 331 | |
| 332 | grpc_credentials_status |
| 333 | grpc_oauth2_token_fetcher_credentials_parse_server_response( |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 334 | const grpc_httpcli_response *response, grpc_mdctx *ctx, |
| 335 | grpc_mdelem **token_elem, gpr_timespec *token_lifetime) { |
| 336 | char *null_terminated_body = NULL; |
| 337 | char *new_access_token = NULL; |
| 338 | grpc_credentials_status status = GRPC_CREDENTIALS_OK; |
| 339 | cJSON *json = NULL; |
| 340 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 341 | if (response->body_length > 0) { |
| 342 | null_terminated_body = gpr_malloc(response->body_length + 1); |
| 343 | null_terminated_body[response->body_length] = '\0'; |
| 344 | memcpy(null_terminated_body, response->body, response->body_length); |
| 345 | } |
| 346 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 347 | if (response->status != 200) { |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 348 | gpr_log(GPR_ERROR, "Call to http server ended with error %d [%s].", |
| 349 | response->status, |
| 350 | null_terminated_body != NULL ? null_terminated_body : ""); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 351 | status = GRPC_CREDENTIALS_ERROR; |
| 352 | goto end; |
| 353 | } else { |
| 354 | cJSON *access_token = NULL; |
| 355 | cJSON *token_type = NULL; |
| 356 | cJSON *expires_in = NULL; |
| 357 | size_t new_access_token_size = 0; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 358 | json = cJSON_Parse(null_terminated_body); |
| 359 | if (json == NULL) { |
| 360 | gpr_log(GPR_ERROR, "Could not parse JSON from %s", null_terminated_body); |
| 361 | status = GRPC_CREDENTIALS_ERROR; |
| 362 | goto end; |
| 363 | } |
| 364 | if (json->type != cJSON_Object) { |
| 365 | gpr_log(GPR_ERROR, "Response should be a JSON object"); |
| 366 | status = GRPC_CREDENTIALS_ERROR; |
| 367 | goto end; |
| 368 | } |
| 369 | access_token = cJSON_GetObjectItem(json, "access_token"); |
| 370 | if (access_token == NULL || access_token->type != cJSON_String) { |
| 371 | gpr_log(GPR_ERROR, "Missing or invalid access_token in JSON."); |
| 372 | status = GRPC_CREDENTIALS_ERROR; |
| 373 | goto end; |
| 374 | } |
| 375 | token_type = cJSON_GetObjectItem(json, "token_type"); |
| 376 | if (token_type == NULL || token_type->type != cJSON_String) { |
| 377 | gpr_log(GPR_ERROR, "Missing or invalid token_type in JSON."); |
| 378 | status = GRPC_CREDENTIALS_ERROR; |
| 379 | goto end; |
| 380 | } |
| 381 | expires_in = cJSON_GetObjectItem(json, "expires_in"); |
| 382 | if (expires_in == NULL || expires_in->type != cJSON_Number) { |
| 383 | gpr_log(GPR_ERROR, "Missing or invalid expires_in in JSON."); |
| 384 | status = GRPC_CREDENTIALS_ERROR; |
| 385 | goto end; |
| 386 | } |
| 387 | new_access_token_size = strlen(token_type->valuestring) + 1 + |
| 388 | strlen(access_token->valuestring) + 1; |
| 389 | new_access_token = gpr_malloc(new_access_token_size); |
| 390 | /* C89 does not have snprintf :(. */ |
| 391 | sprintf(new_access_token, "%s %s", token_type->valuestring, |
| 392 | access_token->valuestring); |
| 393 | token_lifetime->tv_sec = expires_in->valueint; |
| 394 | token_lifetime->tv_nsec = 0; |
| 395 | if (*token_elem != NULL) grpc_mdelem_unref(*token_elem); |
| 396 | *token_elem = grpc_mdelem_from_strings(ctx, GRPC_AUTHORIZATION_METADATA_KEY, |
| 397 | new_access_token); |
| 398 | status = GRPC_CREDENTIALS_OK; |
| 399 | } |
| 400 | |
| 401 | end: |
| 402 | if (status != GRPC_CREDENTIALS_OK && (*token_elem != NULL)) { |
| 403 | grpc_mdelem_unref(*token_elem); |
| 404 | *token_elem = NULL; |
| 405 | } |
| 406 | if (null_terminated_body != NULL) gpr_free(null_terminated_body); |
| 407 | if (new_access_token != NULL) gpr_free(new_access_token); |
| 408 | if (json != NULL) cJSON_Delete(json); |
| 409 | return status; |
| 410 | } |
| 411 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 412 | static void on_oauth2_token_fetcher_http_response( |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 413 | void *user_data, const grpc_httpcli_response *response) { |
| 414 | grpc_credentials_metadata_request *r = |
| 415 | (grpc_credentials_metadata_request *)user_data; |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 416 | grpc_oauth2_token_fetcher_credentials *c = |
| 417 | (grpc_oauth2_token_fetcher_credentials *)r->creds; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 418 | gpr_timespec token_lifetime; |
| 419 | grpc_credentials_status status; |
| 420 | |
| 421 | gpr_mu_lock(&c->mu); |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 422 | status = grpc_oauth2_token_fetcher_credentials_parse_server_response( |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 423 | response, c->md_ctx, &c->access_token_md, &token_lifetime); |
| 424 | if (status == GRPC_CREDENTIALS_OK) { |
| 425 | c->token_expiration = gpr_time_add(gpr_now(), token_lifetime); |
| 426 | r->cb(r->user_data, &c->access_token_md, 1, status); |
| 427 | } else { |
| 428 | c->token_expiration = gpr_inf_past; |
| 429 | r->cb(r->user_data, NULL, 0, status); |
| 430 | } |
| 431 | gpr_mu_unlock(&c->mu); |
| 432 | grpc_credentials_metadata_request_destroy(r); |
| 433 | } |
| 434 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 435 | static void oauth2_token_fetcher_get_request_metadata( |
| 436 | grpc_credentials *creds, grpc_credentials_metadata_cb cb, void *user_data) { |
| 437 | grpc_oauth2_token_fetcher_credentials *c = |
| 438 | (grpc_oauth2_token_fetcher_credentials *)creds; |
| 439 | gpr_timespec refresh_threshold = {GRPC_OAUTH2_TOKEN_REFRESH_THRESHOLD_SECS, |
| 440 | 0}; |
| 441 | grpc_mdelem *cached_access_token_md = NULL; |
| 442 | { |
| 443 | gpr_mu_lock(&c->mu); |
| 444 | if (c->access_token_md != NULL && |
| 445 | (gpr_time_cmp(gpr_time_sub(c->token_expiration, gpr_now()), |
| 446 | refresh_threshold) > 0)) { |
| 447 | cached_access_token_md = grpc_mdelem_ref(c->access_token_md); |
| 448 | } |
| 449 | gpr_mu_unlock(&c->mu); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 450 | } |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 451 | if (cached_access_token_md != NULL) { |
| 452 | cb(user_data, &cached_access_token_md, 1, GRPC_CREDENTIALS_OK); |
| 453 | grpc_mdelem_unref(cached_access_token_md); |
| 454 | } else { |
| 455 | c->fetch_func( |
| 456 | grpc_credentials_metadata_request_create(creds, cb, user_data), |
| 457 | on_oauth2_token_fetcher_http_response, |
| 458 | gpr_time_add(gpr_now(), refresh_threshold)); |
| 459 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 460 | } |
| 461 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 462 | static void init_oauth2_token_fetcher(grpc_oauth2_token_fetcher_credentials *c, |
| 463 | grpc_fetch_oauth2_func fetch_func) { |
| 464 | memset(c, 0, sizeof(grpc_oauth2_token_fetcher_credentials)); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 465 | c->base.type = GRPC_CREDENTIALS_TYPE_OAUTH2; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 466 | gpr_ref_init(&c->base.refcount, 1); |
| 467 | gpr_mu_init(&c->mu); |
| 468 | c->md_ctx = grpc_mdctx_create(); |
| 469 | c->token_expiration = gpr_inf_past; |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 470 | c->fetch_func = fetch_func; |
| 471 | } |
| 472 | |
| 473 | /* -- ComputeEngine credentials. -- */ |
| 474 | |
| 475 | static grpc_credentials_vtable compute_engine_vtable = { |
| 476 | oauth2_token_fetcher_destroy, oauth2_token_fetcher_has_request_metadata, |
| 477 | oauth2_token_fetcher_has_request_metadata_only, |
| 478 | oauth2_token_fetcher_get_request_metadata}; |
| 479 | |
| 480 | static void compute_engine_fetch_oauth2( |
| 481 | grpc_credentials_metadata_request *metadata_req, |
| 482 | grpc_httpcli_response_cb response_cb, gpr_timespec deadline) { |
| 483 | grpc_httpcli_header header = {"Metadata-Flavor", "Google"}; |
| 484 | grpc_httpcli_request request; |
| 485 | memset(&request, 0, sizeof(grpc_httpcli_request)); |
| 486 | request.host = GRPC_COMPUTE_ENGINE_METADATA_HOST; |
| 487 | request.path = GRPC_COMPUTE_ENGINE_METADATA_TOKEN_PATH; |
| 488 | request.hdr_count = 1; |
| 489 | request.hdrs = &header; |
| 490 | grpc_httpcli_get(&request, deadline, response_cb, metadata_req); |
| 491 | } |
| 492 | |
| 493 | grpc_credentials *grpc_compute_engine_credentials_create(void) { |
| 494 | grpc_oauth2_token_fetcher_credentials *c = |
| 495 | gpr_malloc(sizeof(grpc_oauth2_token_fetcher_credentials)); |
| 496 | init_oauth2_token_fetcher(c, compute_engine_fetch_oauth2); |
| 497 | c->base.vtable = &compute_engine_vtable; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 498 | return &c->base; |
| 499 | } |
| 500 | |
jboeuf | 1a809c0 | 2014-12-19 15:44:30 -0800 | [diff] [blame] | 501 | /* -- ServiceAccount credentials. -- */ |
| 502 | |
| 503 | typedef struct { |
| 504 | grpc_oauth2_token_fetcher_credentials base; |
| 505 | grpc_auth_json_key key; |
| 506 | char *scope; |
| 507 | gpr_timespec token_lifetime; |
| 508 | } grpc_service_account_credentials; |
| 509 | |
| 510 | static void service_account_destroy(grpc_credentials *creds) { |
| 511 | grpc_service_account_credentials *c = |
| 512 | (grpc_service_account_credentials *)creds; |
| 513 | if (c->scope != NULL) gpr_free(c->scope); |
| 514 | grpc_auth_json_key_destruct(&c->key); |
| 515 | oauth2_token_fetcher_destroy(&c->base.base); |
| 516 | } |
| 517 | |
| 518 | static grpc_credentials_vtable service_account_vtable = { |
| 519 | service_account_destroy, oauth2_token_fetcher_has_request_metadata, |
| 520 | oauth2_token_fetcher_has_request_metadata_only, |
| 521 | oauth2_token_fetcher_get_request_metadata}; |
| 522 | |
| 523 | static void service_account_fetch_oauth2( |
| 524 | grpc_credentials_metadata_request *metadata_req, |
| 525 | grpc_httpcli_response_cb response_cb, gpr_timespec deadline) { |
| 526 | grpc_service_account_credentials *c = |
| 527 | (grpc_service_account_credentials *)metadata_req->creds; |
| 528 | grpc_httpcli_header header = {"Content-Type", |
| 529 | "application/x-www-form-urlencoded"}; |
| 530 | grpc_httpcli_request request; |
| 531 | char *body = NULL; |
| 532 | char *jwt = grpc_jwt_encode_and_sign(&c->key, c->scope, c->token_lifetime); |
| 533 | if (jwt == NULL) { |
| 534 | grpc_httpcli_response response; |
| 535 | memset(&response, 0, sizeof(grpc_httpcli_response)); |
| 536 | response.status = 400; /* Invalid request. */ |
| 537 | gpr_log(GPR_ERROR, "Could not create signed jwt."); |
| 538 | /* Do not even send the request, just call the response callback. */ |
| 539 | response_cb(metadata_req, &response); |
| 540 | return; |
| 541 | } |
| 542 | body = gpr_malloc(strlen(GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX) + |
| 543 | strlen(jwt) + 1); |
| 544 | sprintf(body, "%s%s", GRPC_SERVICE_ACCOUNT_POST_BODY_PREFIX, jwt); |
| 545 | memset(&request, 0, sizeof(grpc_httpcli_request)); |
| 546 | request.host = GRPC_SERVICE_ACCOUNT_HOST; |
| 547 | request.path = GRPC_SERVICE_ACCOUNT_TOKEN_PATH; |
| 548 | request.hdr_count = 1; |
| 549 | request.hdrs = &header; |
| 550 | request.use_ssl = 1; |
| 551 | grpc_httpcli_post(&request, body, strlen(body), deadline, response_cb, |
| 552 | metadata_req); |
| 553 | gpr_free(body); |
| 554 | gpr_free(jwt); |
| 555 | } |
| 556 | |
| 557 | grpc_credentials *grpc_service_account_credentials_create( |
| 558 | const char *json_key, const char *scope, gpr_timespec token_lifetime) { |
| 559 | grpc_service_account_credentials *c; |
| 560 | grpc_auth_json_key key = grpc_auth_json_key_create_from_string(json_key); |
| 561 | |
| 562 | if (scope == NULL || (strlen(scope) == 0) || |
| 563 | !grpc_auth_json_key_is_valid(&key)) { |
| 564 | gpr_log(GPR_ERROR, |
| 565 | "Invalid input for service account credentials creation"); |
| 566 | return NULL; |
| 567 | } |
| 568 | c = gpr_malloc(sizeof(grpc_service_account_credentials)); |
| 569 | memset(c, 0, sizeof(grpc_service_account_credentials)); |
| 570 | init_oauth2_token_fetcher(&c->base, service_account_fetch_oauth2); |
| 571 | c->base.base.vtable = &service_account_vtable; |
| 572 | c->scope = gpr_strdup(scope); |
| 573 | c->key = key; |
| 574 | c->token_lifetime = token_lifetime; |
| 575 | return &c->base.base; |
| 576 | } |
| 577 | |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 578 | /* -- Fake Oauth2 credentials. -- */ |
| 579 | |
| 580 | typedef struct { |
| 581 | grpc_credentials base; |
| 582 | grpc_mdctx *md_ctx; |
| 583 | grpc_mdelem *access_token_md; |
| 584 | int is_async; |
| 585 | } grpc_fake_oauth2_credentials; |
| 586 | |
| 587 | static void fake_oauth2_destroy(grpc_credentials *creds) { |
| 588 | grpc_fake_oauth2_credentials *c = (grpc_fake_oauth2_credentials *)creds; |
| 589 | if (c->access_token_md != NULL) { |
| 590 | grpc_mdelem_unref(c->access_token_md); |
| 591 | } |
| 592 | grpc_mdctx_orphan(c->md_ctx); |
| 593 | gpr_free(c); |
| 594 | } |
| 595 | |
| 596 | static int fake_oauth2_has_request_metadata(const grpc_credentials *creds) { |
| 597 | return 1; |
| 598 | } |
| 599 | |
| 600 | static int fake_oauth2_has_request_metadata_only( |
| 601 | const grpc_credentials *creds) { |
| 602 | return 1; |
| 603 | } |
| 604 | |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 605 | void on_simulated_token_fetch_done(void *user_data, int success) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 606 | grpc_credentials_metadata_request *r = |
| 607 | (grpc_credentials_metadata_request *)user_data; |
| 608 | grpc_fake_oauth2_credentials *c = (grpc_fake_oauth2_credentials *)r->creds; |
ctiller | 58393c2 | 2015-01-07 14:03:30 -0800 | [diff] [blame] | 609 | GPR_ASSERT(success); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 610 | r->cb(r->user_data, &c->access_token_md, 1, GRPC_CREDENTIALS_OK); |
| 611 | grpc_credentials_metadata_request_destroy(r); |
| 612 | } |
| 613 | |
| 614 | static void fake_oauth2_get_request_metadata(grpc_credentials *creds, |
| 615 | grpc_credentials_metadata_cb cb, |
| 616 | void *user_data) { |
| 617 | grpc_fake_oauth2_credentials *c = (grpc_fake_oauth2_credentials *)creds; |
| 618 | |
| 619 | if (c->is_async) { |
ctiller | 18b49ab | 2014-12-09 14:39:16 -0800 | [diff] [blame] | 620 | grpc_iomgr_add_callback( |
| 621 | on_simulated_token_fetch_done, |
| 622 | grpc_credentials_metadata_request_create(creds, cb, user_data)); |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 623 | } else { |
| 624 | cb(user_data, &c->access_token_md, 1, GRPC_CREDENTIALS_OK); |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | static grpc_credentials_vtable fake_oauth2_vtable = { |
| 629 | fake_oauth2_destroy, fake_oauth2_has_request_metadata, |
| 630 | fake_oauth2_has_request_metadata_only, fake_oauth2_get_request_metadata}; |
| 631 | |
| 632 | grpc_credentials *grpc_fake_oauth2_credentials_create( |
| 633 | const char *token_md_value, int is_async) { |
| 634 | grpc_fake_oauth2_credentials *c = |
| 635 | gpr_malloc(sizeof(grpc_fake_oauth2_credentials)); |
| 636 | memset(c, 0, sizeof(grpc_fake_oauth2_credentials)); |
| 637 | c->base.type = GRPC_CREDENTIALS_TYPE_OAUTH2; |
| 638 | c->base.vtable = &fake_oauth2_vtable; |
| 639 | gpr_ref_init(&c->base.refcount, 1); |
| 640 | c->md_ctx = grpc_mdctx_create(); |
| 641 | c->access_token_md = grpc_mdelem_from_strings( |
| 642 | c->md_ctx, GRPC_AUTHORIZATION_METADATA_KEY, token_md_value); |
| 643 | c->is_async = is_async; |
| 644 | return &c->base; |
| 645 | } |
| 646 | |
| 647 | /* -- Fake transport security credentials. -- */ |
| 648 | |
| 649 | static void fake_transport_security_credentials_destroy( |
| 650 | grpc_credentials *creds) { |
| 651 | gpr_free(creds); |
| 652 | } |
| 653 | |
| 654 | static void fake_transport_security_server_credentials_destroy( |
| 655 | grpc_server_credentials *creds) { |
| 656 | gpr_free(creds); |
| 657 | } |
| 658 | |
| 659 | static int fake_transport_security_has_request_metadata( |
| 660 | const grpc_credentials *creds) { |
| 661 | return 0; |
| 662 | } |
| 663 | |
| 664 | static int fake_transport_security_has_request_metadata_only( |
| 665 | const grpc_credentials *creds) { |
| 666 | return 0; |
| 667 | } |
| 668 | |
| 669 | static grpc_credentials_vtable fake_transport_security_credentials_vtable = { |
| 670 | fake_transport_security_credentials_destroy, |
| 671 | fake_transport_security_has_request_metadata, |
| 672 | fake_transport_security_has_request_metadata_only, NULL}; |
| 673 | |
| 674 | static grpc_server_credentials_vtable |
| 675 | fake_transport_security_server_credentials_vtable = { |
| 676 | fake_transport_security_server_credentials_destroy}; |
| 677 | |
| 678 | grpc_credentials *grpc_fake_transport_security_credentials_create(void) { |
| 679 | grpc_credentials *c = gpr_malloc(sizeof(grpc_credentials)); |
| 680 | memset(c, 0, sizeof(grpc_credentials)); |
| 681 | c->type = GRPC_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY; |
| 682 | c->vtable = &fake_transport_security_credentials_vtable; |
| 683 | gpr_ref_init(&c->refcount, 1); |
| 684 | return c; |
| 685 | } |
| 686 | |
Craig Tiller | 3eef2c4 | 2015-01-15 11:37:54 -0800 | [diff] [blame] | 687 | grpc_server_credentials *grpc_fake_transport_security_server_credentials_create( |
| 688 | void) { |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 689 | grpc_server_credentials *c = gpr_malloc(sizeof(grpc_server_credentials)); |
| 690 | memset(c, 0, sizeof(grpc_server_credentials)); |
| 691 | c->type = GRPC_CREDENTIALS_TYPE_FAKE_TRANSPORT_SECURITY; |
| 692 | c->vtable = &fake_transport_security_server_credentials_vtable; |
| 693 | return c; |
| 694 | } |
| 695 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 696 | /* -- Composite credentials. -- */ |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 697 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 698 | typedef struct { |
| 699 | grpc_credentials base; |
| 700 | grpc_credentials_array inner; |
| 701 | } grpc_composite_credentials; |
| 702 | |
| 703 | typedef struct { |
| 704 | grpc_composite_credentials *composite_creds; |
| 705 | size_t creds_index; |
| 706 | grpc_mdelem **md_elems; |
| 707 | size_t num_md; |
| 708 | void *user_data; |
| 709 | grpc_credentials_metadata_cb cb; |
| 710 | } grpc_composite_credentials_metadata_context; |
| 711 | |
| 712 | static void composite_destroy(grpc_credentials *creds) { |
| 713 | grpc_composite_credentials *c = (grpc_composite_credentials *)creds; |
| 714 | size_t i; |
| 715 | for (i = 0; i < c->inner.num_creds; i++) { |
| 716 | grpc_credentials_unref(c->inner.creds_array[i]); |
| 717 | } |
| 718 | gpr_free(c->inner.creds_array); |
| 719 | gpr_free(creds); |
| 720 | } |
| 721 | |
| 722 | static int composite_has_request_metadata(const grpc_credentials *creds) { |
| 723 | const grpc_composite_credentials *c = |
| 724 | (const grpc_composite_credentials *)creds; |
| 725 | size_t i; |
| 726 | for (i = 0; i < c->inner.num_creds; i++) { |
| 727 | if (grpc_credentials_has_request_metadata(c->inner.creds_array[i])) { |
| 728 | return 1; |
| 729 | } |
| 730 | } |
| 731 | return 0; |
| 732 | } |
| 733 | |
| 734 | static int composite_has_request_metadata_only(const grpc_credentials *creds) { |
| 735 | const grpc_composite_credentials *c = |
| 736 | (const grpc_composite_credentials *)creds; |
| 737 | size_t i; |
| 738 | for (i = 0; i < c->inner.num_creds; i++) { |
| 739 | if (!grpc_credentials_has_request_metadata_only(c->inner.creds_array[i])) { |
| 740 | return 0; |
| 741 | } |
| 742 | } |
| 743 | return 1; |
| 744 | } |
| 745 | |
| 746 | static void composite_md_context_destroy( |
| 747 | grpc_composite_credentials_metadata_context *ctx) { |
| 748 | size_t i; |
| 749 | for (i = 0; i < ctx->num_md; i++) { |
| 750 | grpc_mdelem_unref(ctx->md_elems[i]); |
| 751 | } |
| 752 | gpr_free(ctx->md_elems); |
| 753 | gpr_free(ctx); |
| 754 | } |
| 755 | |
| 756 | static void composite_metadata_cb(void *user_data, grpc_mdelem **md_elems, |
| 757 | size_t num_md, |
| 758 | grpc_credentials_status status) { |
| 759 | grpc_composite_credentials_metadata_context *ctx = |
| 760 | (grpc_composite_credentials_metadata_context *)user_data; |
| 761 | size_t i; |
| 762 | if (status != GRPC_CREDENTIALS_OK) { |
| 763 | ctx->cb(ctx->user_data, NULL, 0, status); |
| 764 | return; |
| 765 | } |
| 766 | |
| 767 | /* Copy the metadata in the context. */ |
| 768 | if (num_md > 0) { |
| 769 | ctx->md_elems = gpr_realloc(ctx->md_elems, |
| 770 | (ctx->num_md + num_md) * sizeof(grpc_mdelem *)); |
| 771 | for (i = 0; i < num_md; i++) { |
| 772 | ctx->md_elems[i + ctx->num_md] = grpc_mdelem_ref(md_elems[i]); |
| 773 | } |
| 774 | ctx->num_md += num_md; |
| 775 | } |
| 776 | |
| 777 | /* See if we need to get some more metadata. */ |
| 778 | while (ctx->creds_index < ctx->composite_creds->inner.num_creds) { |
| 779 | grpc_credentials *inner_creds = |
| 780 | ctx->composite_creds->inner.creds_array[ctx->creds_index++]; |
| 781 | if (grpc_credentials_has_request_metadata(inner_creds)) { |
| 782 | grpc_credentials_get_request_metadata(inner_creds, composite_metadata_cb, |
| 783 | ctx); |
| 784 | return; |
| 785 | } |
| 786 | } |
| 787 | |
| 788 | /* We're done!. */ |
| 789 | ctx->cb(ctx->user_data, ctx->md_elems, ctx->num_md, GRPC_CREDENTIALS_OK); |
| 790 | composite_md_context_destroy(ctx); |
| 791 | } |
| 792 | |
| 793 | static void composite_get_request_metadata(grpc_credentials *creds, |
| 794 | grpc_credentials_metadata_cb cb, |
| 795 | void *user_data) { |
| 796 | grpc_composite_credentials *c = (grpc_composite_credentials *)creds; |
| 797 | grpc_composite_credentials_metadata_context *ctx; |
| 798 | if (!grpc_credentials_has_request_metadata(creds)) { |
| 799 | cb(user_data, NULL, 0, GRPC_CREDENTIALS_OK); |
| 800 | return; |
| 801 | } |
| 802 | ctx = gpr_malloc(sizeof(grpc_composite_credentials_metadata_context)); |
| 803 | memset(ctx, 0, sizeof(grpc_composite_credentials_metadata_context)); |
| 804 | ctx->user_data = user_data; |
| 805 | ctx->cb = cb; |
| 806 | ctx->composite_creds = c; |
| 807 | while (ctx->creds_index < c->inner.num_creds) { |
| 808 | grpc_credentials *inner_creds = c->inner.creds_array[ctx->creds_index++]; |
| 809 | if (grpc_credentials_has_request_metadata(inner_creds)) { |
| 810 | grpc_credentials_get_request_metadata(inner_creds, composite_metadata_cb, |
| 811 | ctx); |
| 812 | return; |
| 813 | } |
| 814 | } |
| 815 | GPR_ASSERT(0); /* Should have exited before. */ |
| 816 | } |
| 817 | |
| 818 | static grpc_credentials_vtable composite_credentials_vtable = { |
| 819 | composite_destroy, composite_has_request_metadata, |
| 820 | composite_has_request_metadata_only, composite_get_request_metadata}; |
| 821 | |
| 822 | static grpc_credentials_array get_creds_array(grpc_credentials **creds_addr) { |
| 823 | grpc_credentials_array result; |
| 824 | grpc_credentials *creds = *creds_addr; |
| 825 | result.creds_array = creds_addr; |
| 826 | result.num_creds = 1; |
| 827 | if (!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE)) { |
| 828 | result = *grpc_composite_credentials_get_credentials(creds); |
| 829 | } |
| 830 | return result; |
| 831 | } |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 832 | |
| 833 | grpc_credentials *grpc_composite_credentials_create(grpc_credentials *creds1, |
| 834 | grpc_credentials *creds2) { |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 835 | size_t i; |
| 836 | grpc_credentials_array creds1_array; |
| 837 | grpc_credentials_array creds2_array; |
| 838 | grpc_composite_credentials *c; |
| 839 | GPR_ASSERT(creds1 != NULL); |
| 840 | GPR_ASSERT(creds2 != NULL); |
| 841 | c = gpr_malloc(sizeof(grpc_composite_credentials)); |
| 842 | memset(c, 0, sizeof(grpc_composite_credentials)); |
| 843 | c->base.type = GRPC_CREDENTIALS_TYPE_COMPOSITE; |
| 844 | c->base.vtable = &composite_credentials_vtable; |
| 845 | gpr_ref_init(&c->base.refcount, 1); |
| 846 | creds1_array = get_creds_array(&creds1); |
| 847 | creds2_array = get_creds_array(&creds2); |
| 848 | c->inner.num_creds = creds1_array.num_creds + creds2_array.num_creds; |
| 849 | c->inner.creds_array = |
| 850 | gpr_malloc(c->inner.num_creds * sizeof(grpc_credentials *)); |
| 851 | for (i = 0; i < creds1_array.num_creds; i++) { |
| 852 | c->inner.creds_array[i] = grpc_credentials_ref(creds1_array.creds_array[i]); |
| 853 | } |
| 854 | for (i = 0; i < creds2_array.num_creds; i++) { |
| 855 | c->inner.creds_array[i + creds1_array.num_creds] = |
| 856 | grpc_credentials_ref(creds2_array.creds_array[i]); |
| 857 | } |
| 858 | return &c->base; |
| 859 | } |
| 860 | |
| 861 | const grpc_credentials_array *grpc_composite_credentials_get_credentials( |
| 862 | grpc_credentials *creds) { |
| 863 | const grpc_composite_credentials *c = |
| 864 | (const grpc_composite_credentials *)creds; |
| 865 | GPR_ASSERT(!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE)); |
| 866 | return &c->inner; |
| 867 | } |
| 868 | |
jboeuf | 6ad120e | 2015-01-12 17:08:15 -0800 | [diff] [blame] | 869 | grpc_credentials *grpc_credentials_contains_type( |
| 870 | grpc_credentials *creds, const char *type, |
| 871 | grpc_credentials **composite_creds) { |
| 872 | size_t i; |
| 873 | if (!strcmp(creds->type, type)) { |
| 874 | if (composite_creds != NULL) *composite_creds = NULL; |
| 875 | return creds; |
| 876 | } else if (!strcmp(creds->type, GRPC_CREDENTIALS_TYPE_COMPOSITE)) { |
| 877 | const grpc_credentials_array *inner_creds_array = |
| 878 | grpc_composite_credentials_get_credentials(creds); |
| 879 | for (i = 0; i < inner_creds_array->num_creds; i++) { |
| 880 | if (!strcmp(type, inner_creds_array->creds_array[i]->type)) { |
| 881 | if (composite_creds != NULL) *composite_creds = creds; |
| 882 | return inner_creds_array->creds_array[i]; |
| 883 | } |
| 884 | } |
| 885 | } |
| 886 | return NULL; |
| 887 | } |
| 888 | |
nnoble | 0c475f0 | 2014-12-05 15:37:39 -0800 | [diff] [blame] | 889 | /* -- IAM credentials. -- */ |
| 890 | |
| 891 | typedef struct { |
| 892 | grpc_credentials base; |
| 893 | grpc_mdctx *md_ctx; |
| 894 | grpc_mdelem *token_md; |
| 895 | grpc_mdelem *authority_selector_md; |
| 896 | } grpc_iam_credentials; |
| 897 | |
| 898 | static void iam_destroy(grpc_credentials *creds) { |
| 899 | grpc_iam_credentials *c = (grpc_iam_credentials *)creds; |
| 900 | grpc_mdelem_unref(c->token_md); |
| 901 | grpc_mdelem_unref(c->authority_selector_md); |
| 902 | grpc_mdctx_orphan(c->md_ctx); |
| 903 | gpr_free(c); |
| 904 | } |
| 905 | |
| 906 | static int iam_has_request_metadata(const grpc_credentials *creds) { return 1; } |
| 907 | |
| 908 | static int iam_has_request_metadata_only(const grpc_credentials *creds) { |
| 909 | return 1; |
| 910 | } |
| 911 | |
| 912 | static void iam_get_request_metadata(grpc_credentials *creds, |
| 913 | grpc_credentials_metadata_cb cb, |
| 914 | void *user_data) { |
| 915 | grpc_iam_credentials *c = (grpc_iam_credentials *)creds; |
| 916 | grpc_mdelem *md_array[2]; |
| 917 | md_array[0] = c->token_md; |
| 918 | md_array[1] = c->authority_selector_md; |
| 919 | cb(user_data, md_array, 2, GRPC_CREDENTIALS_OK); |
| 920 | } |
| 921 | |
| 922 | static grpc_credentials_vtable iam_vtable = { |
| 923 | iam_destroy, iam_has_request_metadata, iam_has_request_metadata_only, |
| 924 | iam_get_request_metadata}; |
| 925 | |
| 926 | grpc_credentials *grpc_iam_credentials_create(const char *token, |
| 927 | const char *authority_selector) { |
| 928 | grpc_iam_credentials *c; |
| 929 | GPR_ASSERT(token != NULL); |
| 930 | GPR_ASSERT(authority_selector != NULL); |
| 931 | c = gpr_malloc(sizeof(grpc_iam_credentials)); |
| 932 | memset(c, 0, sizeof(grpc_iam_credentials)); |
| 933 | c->base.type = GRPC_CREDENTIALS_TYPE_IAM; |
| 934 | c->base.vtable = &iam_vtable; |
| 935 | gpr_ref_init(&c->base.refcount, 1); |
| 936 | c->md_ctx = grpc_mdctx_create(); |
| 937 | c->token_md = grpc_mdelem_from_strings( |
| 938 | c->md_ctx, GRPC_IAM_AUTHORIZATION_TOKEN_METADATA_KEY, token); |
| 939 | c->authority_selector_md = grpc_mdelem_from_strings( |
| 940 | c->md_ctx, GRPC_IAM_AUTHORITY_SELECTOR_METADATA_KEY, authority_selector); |
| 941 | return &c->base; |
Nicolas Noble | b7ebd3b | 2014-11-26 16:33:03 -0800 | [diff] [blame] | 942 | } |
| 943 | |
| 944 | /* -- Default credentials TODO(jboeuf). -- */ |
| 945 | |
| 946 | grpc_credentials *grpc_default_credentials_create(void) { return NULL; } |