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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/*
*
* 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 "test/core/bad_client/bad_client.h"
#include <string.h>
#include <grpc/support/alloc.h>
#include <grpc/support/string_util.h>
#include "src/core/lib/support/string.h"
#include "src/core/lib/surface/server.h"
#include "test/core/end2end/cq_verifier.h"
// The large-metadata headers that we're adding for this test are not
// actually appended to this in a single string, since the string would
// be longer than the C99 string literal limit. Instead, we dynamically
// construct it by adding the large headers one at a time.
#define PFX_TOO_MUCH_METADATA_FROM_CLIENT_PREFIX_STR \
"PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* settings frame */ \
"\x00\x00\x00\x04\x00\x00\x00\x00\x00" /* headers: generated from \
large_metadata.headers in this \
directory */ \
"\x00\x00\x00\x04\x01\x00\x00\x00\x00" \
"\x00" \
"5{\x01\x05\x00\x00\x00\x01" \
"\x10\x05:path\x08/foo/bar" \
"\x10\x07:scheme\x04http" \
"\x10\x07:method\x04POST" \
"\x10\x0a:authority\x09localhost" \
"\x10\x0c" \
"content-type\x10" \
"application/grpc" \
"\x10\x14grpc-accept-encoding\x15identity,deflate,gzip" \
"\x10\x02te\x08trailers" \
"\x10\x0auser-agent\"bad-client grpc-c/0.12.0.0 (linux)"
// Each large-metadata header is constructed from these start and end
// strings, with a two-digit number in between.
#define PFX_TOO_MUCH_METADATA_FROM_CLIENT_HEADER_START_STR "\x10\x0duser-header"
#define PFX_TOO_MUCH_METADATA_FROM_CLIENT_HEADER_END_STR \
"~aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" \
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
// The size of each large-metadata header string.
#define PFX_TOO_MUCH_METADATA_FROM_CLIENT_HEADER_SIZE \
((sizeof(PFX_TOO_MUCH_METADATA_FROM_CLIENT_HEADER_START_STR) - 1) + 2 + \
(sizeof(PFX_TOO_MUCH_METADATA_FROM_CLIENT_HEADER_END_STR) - 1))
// The number of headers we're adding and the total size of the client
// payload.
#define NUM_HEADERS 95
#define PFX_TOO_MUCH_METADATA_FROM_CLIENT_PAYLOAD_SIZE \
((sizeof(PFX_TOO_MUCH_METADATA_FROM_CLIENT_PREFIX_STR) - 1) + \
(NUM_HEADERS * PFX_TOO_MUCH_METADATA_FROM_CLIENT_HEADER_SIZE) + 1)
#define PFX_TOO_MUCH_METADATA_FROM_SERVER_STR \
"PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* settings frame: sets \
MAX_HEADER_LIST_SIZE to 16K */ \
"\x00\x00\x06\x04\x00\x00\x00\x00\x00\x00\x06\x00\x00\x40\x00" /* headers: \
generated \
from \
simple_request.headers \
in this \
directory \
*/ \
"\x00\x00\x00\x04\x01\x00\x00\x00\x00" \
"\x00\x00\xc9\x01\x04\x00\x00\x00\x01" \
"\x10\x05:path\x08/foo/bar" \
"\x10\x07:scheme\x04http" \
"\x10\x07:method\x04POST" \
"\x10\x0a:authority\x09localhost" \
"\x10\x0c" \
"content-type\x10" \
"application/grpc" \
"\x10\x14grpc-accept-encoding\x15" \
"deflate,identity,gzip" \
"\x10\x02te\x08trailers" \
"\x10\x0auser-agent\"bad-client grpc-c/0.12.0.0 (linux)"
static void *tag(intptr_t t) { return (void *)t; }
static void server_verifier(grpc_server *server, grpc_completion_queue *cq,
void *registered_method) {
grpc_call_error error;
grpc_call *s;
grpc_call_details call_details;
cq_verifier *cqv = cq_verifier_create(cq);
grpc_metadata_array request_metadata_recv;
grpc_call_details_init(&call_details);
grpc_metadata_array_init(&request_metadata_recv);
error = grpc_server_request_call(server, &s, &call_details,
&request_metadata_recv, cq, cq, tag(101));
GPR_ASSERT(GRPC_CALL_OK == error);
CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
cq_verify(cqv);
GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.host, "localhost"));
GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo/bar"));
grpc_metadata_array_destroy(&request_metadata_recv);
grpc_call_details_destroy(&call_details);
grpc_call_unref(s);
cq_verifier_destroy(cqv);
}
static void server_verifier_sends_too_much_metadata(grpc_server *server,
grpc_completion_queue *cq,
void *registered_method) {
grpc_call_error error;
grpc_call *s;
grpc_call_details call_details;
cq_verifier *cqv = cq_verifier_create(cq);
grpc_metadata_array request_metadata_recv;
grpc_call_details_init(&call_details);
grpc_metadata_array_init(&request_metadata_recv);
error = grpc_server_request_call(server, &s, &call_details,
&request_metadata_recv, cq, cq, tag(101));
GPR_ASSERT(GRPC_CALL_OK == error);
CQ_EXPECT_COMPLETION(cqv, tag(101), 1);
cq_verify(cqv);
GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.host, "localhost"));
GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/foo/bar"));
const size_t metadata_value_size = 16 * 1024;
grpc_metadata meta;
meta.key = grpc_slice_from_static_string("key");
meta.value = grpc_slice_malloc(metadata_value_size);
memset(GRPC_SLICE_START_PTR(meta.value), 'a', metadata_value_size);
grpc_op op;
memset(&op, 0, sizeof(op));
op.op = GRPC_OP_SEND_INITIAL_METADATA;
op.data.send_initial_metadata.count = 1;
op.data.send_initial_metadata.metadata = &meta;
op.flags = 0;
op.reserved = NULL;
error = grpc_call_start_batch(s, &op, 1, tag(102), NULL);
GPR_ASSERT(GRPC_CALL_OK == error);
CQ_EXPECT_COMPLETION(cqv, tag(102), 0); // Operation fails.
cq_verify(cqv);
grpc_slice_unref(meta.value);
grpc_metadata_array_destroy(&request_metadata_recv);
grpc_call_details_destroy(&call_details);
grpc_call_unref(s);
cq_verifier_destroy(cqv);
}
static void client_validator(grpc_slice_buffer *incoming) {
// Get last frame from incoming slice buffer.
grpc_slice_buffer last_frame_buffer;
grpc_slice_buffer_init(&last_frame_buffer);
grpc_slice_buffer_trim_end(incoming, 13, &last_frame_buffer);
GPR_ASSERT(last_frame_buffer.count == 1);
grpc_slice last_frame = last_frame_buffer.slices[0];
const uint8_t *p = GRPC_SLICE_START_PTR(last_frame);
// Length = 4
GPR_ASSERT(*p++ == 0);
GPR_ASSERT(*p++ == 0);
GPR_ASSERT(*p++ == 4);
// Frame type (RST_STREAM)
GPR_ASSERT(*p++ == 3);
// Flags
GPR_ASSERT(*p++ == 0);
// Stream ID.
GPR_ASSERT(*p++ == 0);
GPR_ASSERT(*p++ == 0);
GPR_ASSERT(*p++ == 0);
GPR_ASSERT(*p++ == 1);
// Payload (error code)
GPR_ASSERT(*p++ == 0);
GPR_ASSERT(*p++ == 0);
GPR_ASSERT(*p++ == 0);
GPR_ASSERT(*p == 0 || *p == 11);
grpc_slice_buffer_destroy(&last_frame_buffer);
}
int main(int argc, char **argv) {
int i;
grpc_test_init(argc, argv);
// Test sending more metadata than the server will accept.
gpr_strvec headers;
gpr_strvec_init(&headers);
for (i = 0; i < NUM_HEADERS; ++i) {
char *str;
gpr_asprintf(&str, "%s%02d%s",
PFX_TOO_MUCH_METADATA_FROM_CLIENT_HEADER_START_STR, i,
PFX_TOO_MUCH_METADATA_FROM_CLIENT_HEADER_END_STR);
gpr_strvec_add(&headers, str);
}
size_t headers_len;
const char *client_headers = gpr_strvec_flatten(&headers, &headers_len);
gpr_strvec_destroy(&headers);
char client_payload[PFX_TOO_MUCH_METADATA_FROM_CLIENT_PAYLOAD_SIZE] =
PFX_TOO_MUCH_METADATA_FROM_CLIENT_PREFIX_STR;
memcpy(
client_payload + sizeof(PFX_TOO_MUCH_METADATA_FROM_CLIENT_PREFIX_STR) - 1,
client_headers, headers_len);
GRPC_RUN_BAD_CLIENT_TEST(server_verifier, client_validator, client_payload,
0);
gpr_free((void *)client_headers);
// Test sending more metadata than the client will accept.
GRPC_RUN_BAD_CLIENT_TEST(server_verifier_sends_too_much_metadata,
client_validator,
PFX_TOO_MUCH_METADATA_FROM_SERVER_STR, 0);
return 0;
}
|
