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/*
*
* Copyright 2015 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <stdio.h>
#include <string.h>
#include <grpc/grpc.h>
#include <grpc/grpc_security.h>
#include <grpc/slice.h>
#include <grpc/support/alloc.h>
#include <grpc/support/cmdline.h>
#include <grpc/support/log.h>
#include <grpc/support/sync.h>
#include "src/core/lib/security/credentials/jwt/jwt_verifier.h"
typedef struct {
grpc_pollset *pollset;
gpr_mu *mu;
int is_done;
int success;
} synchronizer;
static void print_usage_and_exit(gpr_cmdline *cl, const char *argv0) {
char *usage = gpr_cmdline_usage_string(cl, argv0);
fprintf(stderr, "%s", usage);
gpr_free(usage);
gpr_cmdline_destroy(cl);
exit(1);
}
static void on_jwt_verification_done(grpc_exec_ctx *exec_ctx, void *user_data,
grpc_jwt_verifier_status status,
grpc_jwt_claims *claims) {
synchronizer *sync = user_data;
sync->success = (status == GRPC_JWT_VERIFIER_OK);
if (sync->success) {
char *claims_str;
GPR_ASSERT(claims != NULL);
claims_str =
grpc_json_dump_to_string((grpc_json *)grpc_jwt_claims_json(claims), 2);
printf("Claims: \n\n%s\n", claims_str);
gpr_free(claims_str);
grpc_jwt_claims_destroy(exec_ctx, claims);
} else {
GPR_ASSERT(claims == NULL);
fprintf(stderr, "Verification failed with error %s\n",
grpc_jwt_verifier_status_to_string(status));
}
gpr_mu_lock(sync->mu);
sync->is_done = 1;
GRPC_LOG_IF_ERROR("pollset_kick",
grpc_pollset_kick(exec_ctx, sync->pollset, NULL));
gpr_mu_unlock(sync->mu);
}
int main(int argc, char **argv) {
synchronizer sync;
grpc_jwt_verifier *verifier;
gpr_cmdline *cl;
char *jwt = NULL;
char *aud = NULL;
grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT;
grpc_init();
cl = gpr_cmdline_create("JWT verifier tool");
gpr_cmdline_add_string(cl, "jwt", "JSON web token to verify", &jwt);
gpr_cmdline_add_string(cl, "aud", "Audience for the JWT", &aud);
gpr_cmdline_parse(cl, argc, argv);
if (jwt == NULL || aud == NULL) {
print_usage_and_exit(cl, argv[0]);
}
verifier = grpc_jwt_verifier_create(NULL, 0);
grpc_init();
sync.pollset = gpr_zalloc(grpc_pollset_size());
grpc_pollset_init(sync.pollset, &sync.mu);
sync.is_done = 0;
grpc_jwt_verifier_verify(&exec_ctx, verifier, sync.pollset, jwt, aud,
on_jwt_verification_done, &sync);
gpr_mu_lock(sync.mu);
while (!sync.is_done) {
grpc_pollset_worker *worker = NULL;
if (!GRPC_LOG_IF_ERROR("pollset_work",
grpc_pollset_work(&exec_ctx, sync.pollset, &worker,
GRPC_MILLIS_INF_FUTURE)))
sync.is_done = true;
gpr_mu_unlock(sync.mu);
grpc_exec_ctx_flush(&exec_ctx);
gpr_mu_lock(sync.mu);
}
gpr_mu_unlock(sync.mu);
gpr_free(sync.pollset);
grpc_jwt_verifier_destroy(&exec_ctx, verifier);
grpc_exec_ctx_finish(&exec_ctx);
gpr_cmdline_destroy(cl);
grpc_shutdown();
return !sync.success;
}
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