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@ -36,11 +36,6 @@ |
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#include <limits.h> |
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#include <string.h> |
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#include "src/core/lib/http/httpcli.h" |
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#include "src/core/lib/iomgr/polling_entity.h" |
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#include "src/core/lib/security/util/b64.h" |
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#include "src/core/lib/tsi/ssl_types.h" |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/string_util.h> |
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@ -48,6 +43,12 @@ |
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#include <grpc/support/useful.h> |
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#include <openssl/pem.h> |
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#include "src/core/lib/http/httpcli.h" |
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#include "src/core/lib/iomgr/polling_entity.h" |
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#include "src/core/lib/security/util/b64.h" |
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#include "src/core/lib/slice/slice_internal.h" |
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#include "src/core/lib/tsi/ssl_types.h" |
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/* --- Utils. --- */ |
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const char *grpc_jwt_verifier_status_to_string( |
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@ -84,7 +85,8 @@ static const EVP_MD *evp_md_from_alg(const char *alg) { |
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} |
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} |
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static grpc_json *parse_json_part_from_jwt(const char *str, size_t len, |
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static grpc_json *parse_json_part_from_jwt(grpc_exec_ctx *exec_ctx, |
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const char *str, size_t len, |
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grpc_slice *buffer) { |
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grpc_json *json; |
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@ -132,13 +134,14 @@ typedef struct { |
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grpc_slice buffer; |
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} jose_header; |
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static void jose_header_destroy(jose_header *h) { |
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static void jose_header_destroy(grpc_exec_ctx *exec_ctx, jose_header *h) { |
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grpc_slice_unref_internal(exec_ctx, h->buffer); |
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gpr_free(h); |
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} |
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/* Takes ownership of json and buffer. */ |
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static jose_header *jose_header_from_json(grpc_json *json, grpc_slice buffer) { |
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static jose_header *jose_header_from_json(grpc_exec_ctx *exec_ctx, |
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grpc_json *json, grpc_slice buffer) { |
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grpc_json *cur; |
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jose_header *h = gpr_malloc(sizeof(jose_header)); |
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memset(h, 0, sizeof(jose_header)); |
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@ -173,7 +176,7 @@ static jose_header *jose_header_from_json(grpc_json *json, grpc_slice buffer) { |
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error: |
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grpc_json_destroy(json); |
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jose_header_destroy(h); |
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jose_header_destroy(exec_ctx, h); |
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return NULL; |
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} |
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@ -193,7 +196,7 @@ struct grpc_jwt_claims { |
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grpc_slice buffer; |
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}; |
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void grpc_jwt_claims_destroy(grpc_jwt_claims *claims) { |
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void grpc_jwt_claims_destroy(grpc_exec_ctx *exec_ctx, grpc_jwt_claims *claims) { |
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grpc_json_destroy(claims->json); |
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grpc_slice_unref_internal(exec_ctx, claims->buffer); |
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gpr_free(claims); |
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@ -240,7 +243,8 @@ gpr_timespec grpc_jwt_claims_not_before(const grpc_jwt_claims *claims) { |
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} |
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/* Takes ownership of json and buffer even in case of failure. */ |
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grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, grpc_slice buffer) { |
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grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_exec_ctx *exec_ctx, |
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grpc_json *json, grpc_slice buffer) { |
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grpc_json *cur; |
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grpc_jwt_claims *claims = gpr_malloc(sizeof(grpc_jwt_claims)); |
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memset(claims, 0, sizeof(grpc_jwt_claims)); |
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@ -281,7 +285,7 @@ grpc_jwt_claims *grpc_jwt_claims_from_json(grpc_json *json, grpc_slice buffer) { |
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return claims; |
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error: |
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grpc_jwt_claims_destroy(claims); |
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grpc_jwt_claims_destroy(exec_ctx, claims); |
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return NULL; |
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} |
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@ -362,12 +366,12 @@ static verifier_cb_ctx *verifier_cb_ctx_create( |
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return ctx; |
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} |
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void verifier_cb_ctx_destroy(verifier_cb_ctx *ctx) { |
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void verifier_cb_ctx_destroy(grpc_exec_ctx *exec_ctx, verifier_cb_ctx *ctx) { |
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if (ctx->audience != NULL) gpr_free(ctx->audience); |
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if (ctx->claims != NULL) grpc_jwt_claims_destroy(ctx->claims); |
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if (ctx->claims != NULL) grpc_jwt_claims_destroy(exec_ctx, ctx->claims); |
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grpc_slice_unref_internal(exec_ctx, ctx->signature); |
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grpc_slice_unref_internal(exec_ctx, ctx->signed_data); |
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jose_header_destroy(ctx->header); |
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jose_header_destroy(exec_ctx, ctx->header); |
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for (size_t i = 0; i < HTTP_RESPONSE_COUNT; i++) { |
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grpc_http_response_destroy(&ctx->responses[i]); |
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} |
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@ -447,7 +451,7 @@ end: |
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return result; |
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} |
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static BIGNUM *bignum_from_base64(const char *b64) { |
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static BIGNUM *bignum_from_base64(grpc_exec_ctx *exec_ctx, const char *b64) { |
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BIGNUM *result = NULL; |
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grpc_slice bin; |
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@ -463,7 +467,8 @@ static BIGNUM *bignum_from_base64(const char *b64) { |
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return result; |
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} |
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static EVP_PKEY *pkey_from_jwk(const grpc_json *json, const char *kty) { |
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static EVP_PKEY *pkey_from_jwk(grpc_exec_ctx *exec_ctx, const grpc_json *json, |
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const char *kty) { |
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const grpc_json *key_prop; |
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RSA *rsa = NULL; |
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EVP_PKEY *result = NULL; |
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@ -480,10 +485,12 @@ static EVP_PKEY *pkey_from_jwk(const grpc_json *json, const char *kty) { |
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} |
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for (key_prop = json->child; key_prop != NULL; key_prop = key_prop->next) { |
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if (strcmp(key_prop->key, "n") == 0) { |
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rsa->n = bignum_from_base64(validate_string_field(key_prop, "n")); |
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rsa->n = |
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bignum_from_base64(exec_ctx, validate_string_field(key_prop, "n")); |
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if (rsa->n == NULL) goto end; |
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} else if (strcmp(key_prop->key, "e") == 0) { |
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rsa->e = bignum_from_base64(validate_string_field(key_prop, "e")); |
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rsa->e = |
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bignum_from_base64(exec_ctx, validate_string_field(key_prop, "e")); |
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if (rsa->e == NULL) goto end; |
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} |
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} |
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@ -499,7 +506,8 @@ end: |
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return result; |
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} |
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static EVP_PKEY *find_verification_key(const grpc_json *json, |
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static EVP_PKEY *find_verification_key(grpc_exec_ctx *exec_ctx, |
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const grpc_json *json, |
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const char *header_alg, |
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const char *header_kid) { |
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const grpc_json *jkey; |
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@ -543,7 +551,7 @@ static EVP_PKEY *find_verification_key(const grpc_json *json, |
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} |
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if (alg != NULL && kid != NULL && kty != NULL && |
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strcmp(kid, header_kid) == 0 && strcmp(alg, header_alg) == 0) { |
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return pkey_from_jwk(jkey, kty); |
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return pkey_from_jwk(exec_ctx, jkey, kty); |
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} |
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} |
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gpr_log(GPR_ERROR, |
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@ -597,7 +605,7 @@ static void on_keys_retrieved(grpc_exec_ctx *exec_ctx, void *user_data, |
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goto end; |
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} |
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verification_key = |
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find_verification_key(json, ctx->header->alg, ctx->header->kid); |
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find_verification_key(exec_ctx, json, ctx->header->alg, ctx->header->kid); |
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if (verification_key == NULL) { |
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gpr_log(GPR_ERROR, "Could not find verification key with kid %s.", |
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ctx->header->kid); |
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@ -622,7 +630,7 @@ end: |
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if (json != NULL) grpc_json_destroy(json); |
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if (verification_key != NULL) EVP_PKEY_free(verification_key); |
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ctx->user_cb(ctx->user_data, status, claims); |
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verifier_cb_ctx_destroy(ctx); |
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verifier_cb_ctx_destroy(exec_ctx, ctx); |
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} |
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static void on_openid_config_retrieved(grpc_exec_ctx *exec_ctx, void *user_data, |
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@ -675,7 +683,7 @@ static void on_openid_config_retrieved(grpc_exec_ctx *exec_ctx, void *user_data, |
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error: |
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if (json != NULL) grpc_json_destroy(json); |
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ctx->user_cb(ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR, NULL); |
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verifier_cb_ctx_destroy(ctx); |
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verifier_cb_ctx_destroy(exec_ctx, ctx); |
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} |
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static email_key_mapping *verifier_get_mapping(grpc_jwt_verifier *v, |
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@ -786,7 +794,7 @@ static void retrieve_key_and_verify(grpc_exec_ctx *exec_ctx, |
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error: |
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ctx->user_cb(ctx->user_data, GRPC_JWT_VERIFIER_KEY_RETRIEVAL_ERROR, NULL); |
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verifier_cb_ctx_destroy(ctx); |
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verifier_cb_ctx_destroy(exec_ctx, ctx); |
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} |
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void grpc_jwt_verifier_verify(grpc_exec_ctx *exec_ctx, |
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@ -808,17 +816,19 @@ void grpc_jwt_verifier_verify(grpc_exec_ctx *exec_ctx, |
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GPR_ASSERT(verifier != NULL && jwt != NULL && audience != NULL && cb != NULL); |
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dot = strchr(cur, '.'); |
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if (dot == NULL) goto error; |
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json = parse_json_part_from_jwt(cur, (size_t)(dot - cur), &header_buffer); |
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json = parse_json_part_from_jwt(exec_ctx, cur, (size_t)(dot - cur), |
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&header_buffer); |
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if (json == NULL) goto error; |
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header = jose_header_from_json(json, header_buffer); |
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header = jose_header_from_json(exec_ctx, json, header_buffer); |
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if (header == NULL) goto error; |
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cur = dot + 1; |
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dot = strchr(cur, '.'); |
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if (dot == NULL) goto error; |
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json = parse_json_part_from_jwt(cur, (size_t)(dot - cur), &claims_buffer); |
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json = parse_json_part_from_jwt(exec_ctx, cur, (size_t)(dot - cur), |
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&claims_buffer); |
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if (json == NULL) goto error; |
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claims = grpc_jwt_claims_from_json(json, claims_buffer); |
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claims = grpc_jwt_claims_from_json(exec_ctx, json, claims_buffer); |
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if (claims == NULL) goto error; |
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signed_jwt_len = (size_t)(dot - jwt); |
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@ -832,8 +842,8 @@ void grpc_jwt_verifier_verify(grpc_exec_ctx *exec_ctx, |
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return; |
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error: |
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if (header != NULL) jose_header_destroy(header); |
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if (claims != NULL) grpc_jwt_claims_destroy(claims); |
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if (header != NULL) jose_header_destroy(exec_ctx, header); |
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if (claims != NULL) grpc_jwt_claims_destroy(exec_ctx, claims); |
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cb(user_data, GRPC_JWT_VERIFIER_BAD_FORMAT, NULL); |
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} |
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Craig Tiller
8 years ago