1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <stdio.h>
#include <string.h>
#include "src/core/security/credentials.h"
#include "src/core/support/string.h"
#include <grpc/grpc.h>
#include <grpc/grpc_security.h>
#include <grpc/support/alloc.h>
#include <grpc/support/cmdline.h>
#include <grpc/support/log.h>
#include <grpc/support/slice.h>
#include <grpc/support/sync.h>
typedef struct
{
grpc_pollset pollset;
int is_done;
} synchronizer;
static void
on_metadata_response (grpc_exec_ctx * exec_ctx, void *user_data, grpc_credentials_md * md_elems, size_t num_md, grpc_credentials_status status)
{
synchronizer *sync = user_data;
if (status == GRPC_CREDENTIALS_ERROR)
{
fprintf (stderr, "Fetching token failed.\n");
}
else
{
char *token;
GPR_ASSERT (num_md == 1);
token = gpr_dump_slice (md_elems[0].value, GPR_DUMP_ASCII);
printf ("\nGot token: %s\n\n", token);
gpr_free (token);
}
gpr_mu_lock (GRPC_POLLSET_MU (&sync->pollset));
sync->is_done = 1;
grpc_pollset_kick (&sync->pollset, NULL);
gpr_mu_unlock (GRPC_POLLSET_MU (&sync->pollset));
}
int
main (int argc, char **argv)
{
int result = 0;
grpc_closure_list closure_list = GRPC_CLOSURE_LIST_INIT;
synchronizer sync;
grpc_credentials *creds = NULL;
char *service_url = "https://test.foo.google.com/Foo";
gpr_cmdline *cl = gpr_cmdline_create ("print_google_default_creds_token");
gpr_cmdline_add_string (cl, "service_url", "Service URL for the token request.", &service_url);
gpr_cmdline_parse (cl, argc, argv);
grpc_init ();
creds = grpc_google_default_credentials_create ();
if (creds == NULL)
{
fprintf (stderr, "\nCould not find default credentials.\n\n");
result = 1;
goto end;
}
grpc_pollset_init (&sync.pollset);
sync.is_done = 0;
grpc_credentials_get_request_metadata (creds, &sync.pollset, service_url, on_metadata_response, &sync, &closure_list);
gpr_mu_lock (GRPC_POLLSET_MU (&sync.pollset));
while (!sync.is_done)
{
grpc_pollset_worker worker;
grpc_pollset_work (&sync.pollset, &worker, gpr_now (GPR_CLOCK_MONOTONIC), gpr_inf_future (GPR_CLOCK_MONOTONIC), &closure_list);
gpr_mu_unlock (GRPC_POLLSET_MU (&sync.pollset));
grpc_closure_list_run (&closure_list);
gpr_mu_lock (GRPC_POLLSET_MU (&sync.pollset));
}
gpr_mu_unlock (GRPC_POLLSET_MU (&sync.pollset));
grpc_credentials_release (creds);
end:
gpr_cmdline_destroy (cl);
grpc_shutdown ();
return result;
}
|
