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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 "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 46
#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 8K */ \
"\x00\x00\x06\x04\x00\x00\x00\x00\x00\x00\x06\x00\x00\x20\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 = 8 * 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 = nullptr;
error = grpc_call_start_batch(s, &op, 1, tag(102), nullptr);
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 bool client_validator(grpc_slice_buffer* incoming) {
for (size_t i = 0; i < incoming->count; ++i) {
const char* s = (const char*)GRPC_SLICE_START_PTR(incoming->slices[i]);
char* hex = gpr_dump(s, GRPC_SLICE_LENGTH(incoming->slices[i]),
GPR_DUMP_HEX | GPR_DUMP_ASCII);
gpr_log(GPR_INFO, "RESPONSE SLICE %" PRIdPTR ": %s", i, hex);
gpr_free(hex);
}
// 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);
bool success =
// Length == 4
*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 == 0 || *p == 11;
if (!success) {
gpr_log(GPR_INFO, "client expected RST_STREAM frame, not found");
}
grpc_slice_buffer_destroy(&last_frame_buffer);
return success;
}
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;
}
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