aboutsummaryrefslogtreecommitdiffhomepage
path: root/test/core/bad_client/tests/large_metadata.c
blob: b7d329cb7415f1033f074b521d6926fef61a3458 (plain)
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
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
/*
 *
 * 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 "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"                                                                   \
  "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\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 == strcmp(call_details.host, "localhost"));
  GPR_ASSERT(0 == strcmp(call_details.method, "/foo/bar"));

  grpc_metadata_array_destroy(&request_metadata_recv);
  grpc_call_details_destroy(&call_details);
  grpc_call_destroy(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 == strcmp(call_details.host, "localhost"));
  GPR_ASSERT(0 == strcmp(call_details.method, "/foo/bar"));

  const size_t metadata_value_size = 16 * 1024;
  grpc_metadata meta;
  meta.key = "key";
  meta.value = gpr_malloc(metadata_value_size + 1);
  memset((char *)meta.value, 'a', metadata_value_size);
  ((char *)meta.value)[metadata_value_size] = 0;
  meta.value_length = metadata_value_size;

  grpc_op 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);

  gpr_free((char *)meta.value);
  grpc_metadata_array_destroy(&request_metadata_recv);
  grpc_call_details_destroy(&call_details);
  grpc_call_destroy(s);
  cq_verifier_destroy(cqv);
}

static void client_validator(gpr_slice_buffer *incoming) {
  // Get last frame from incoming slice buffer.
  gpr_slice_buffer last_frame_buffer;
  gpr_slice_buffer_init(&last_frame_buffer);
  gpr_slice_buffer_trim_end(incoming, 13, &last_frame_buffer);
  GPR_ASSERT(last_frame_buffer.count == 1);
  gpr_slice last_frame = last_frame_buffer.slices[0];
  // Construct expected frame.
  gpr_slice expected = gpr_slice_malloc(13);
  uint8_t *p = GPR_SLICE_START_PTR(expected);
  // Length.
  *p++ = 0;
  *p++ = 0;
  *p++ = 4;
  // Frame type (RST_STREAM).
  *p++ = 3;
  // Flags.
  *p++ = 0;
  // Stream ID.
  *p++ = 0;
  *p++ = 0;
  *p++ = 0;
  *p++ = 1;
  // Payload (error code).
  *p++ = 0;
  *p++ = 0;
  *p++ = 0;
  *p++ = 11;
  // Compare actual and expected.
  GPR_ASSERT(gpr_slice_cmp(last_frame, expected) == 0);
  gpr_slice_buffer_destroy(&last_frame_buffer);
}

int main(int argc, char **argv) {
  grpc_test_init(argc, argv);

  // Test sending more metadata than the server will accept.
  gpr_strvec headers;
  gpr_strvec_init(&headers);
  for (int 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;
}