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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 "src/core/lib/iomgr/load_file.h"
#include "src/core/lib/security/credentials/jwt/jwt_credentials.h"
#include <grpc/slice.h>
#include <grpc/support/alloc.h>
#include <grpc/support/cmdline.h>
#include <grpc/support/log.h>
void create_jwt(const char* json_key_file_path, const char* service_url,
const char* scope) {
grpc_auth_json_key key;
char* jwt;
grpc_slice json_key_data;
GPR_ASSERT(GRPC_LOG_IF_ERROR(
"load_file", grpc_load_file(json_key_file_path, 1, &json_key_data)));
key = grpc_auth_json_key_create_from_string(
(const char*)GRPC_SLICE_START_PTR(json_key_data));
grpc_slice_unref(json_key_data);
if (!grpc_auth_json_key_is_valid(&key)) {
fprintf(stderr, "Could not parse json key.\n");
fflush(stderr);
exit(1);
}
jwt = grpc_jwt_encode_and_sign(
&key, service_url == nullptr ? GRPC_JWT_OAUTH2_AUDIENCE : service_url,
grpc_max_auth_token_lifetime(), scope);
grpc_auth_json_key_destruct(&key);
if (jwt == nullptr) {
fprintf(stderr, "Could not create JWT.\n");
fflush(stderr);
exit(1);
}
fprintf(stdout, "%s\n", jwt);
gpr_free(jwt);
}
int main(int argc, char** argv) {
const char* scope = nullptr;
const char* json_key_file_path = nullptr;
const char* service_url = nullptr;
grpc_init();
gpr_cmdline* cl = gpr_cmdline_create("create_jwt");
gpr_cmdline_add_string(cl, "json_key", "File path of the json key.",
&json_key_file_path);
gpr_cmdline_add_string(cl, "scope",
"OPTIONAL Space delimited permissions. Mutually "
"exclusive with service_url",
&scope);
gpr_cmdline_add_string(cl, "service_url",
"OPTIONAL service URL. Mutually exclusive with scope.",
&service_url);
gpr_cmdline_parse(cl, argc, argv);
if (json_key_file_path == nullptr) {
fprintf(stderr, "Missing --json_key option.\n");
fflush(stderr);
exit(1);
}
if (scope != nullptr) {
if (service_url != nullptr) {
fprintf(stderr,
"Options --scope and --service_url are mutually exclusive.\n");
fflush(stderr);
exit(1);
}
} else if (service_url == nullptr) {
fprintf(stderr, "Need one of --service_url or --scope options.\n");
fflush(stderr);
exit(1);
}
create_jwt(json_key_file_path, service_url, scope);
gpr_cmdline_destroy(cl);
grpc_shutdown();
return 0;
}
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