| /* |
| * |
| * 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 "src/core/ext/transport/chttp2/transport/hpack_encoder.h" |
| |
| #include <stdio.h> |
| #include <string.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| #include <grpc/support/string_util.h> |
| |
| #include "src/core/ext/transport/chttp2/transport/hpack_parser.h" |
| #include "src/core/lib/gpr/string.h" |
| #include "src/core/lib/slice/slice_internal.h" |
| #include "src/core/lib/slice/slice_string_helpers.h" |
| #include "src/core/lib/transport/metadata.h" |
| #include "test/core/util/parse_hexstring.h" |
| #include "test/core/util/slice_splitter.h" |
| #include "test/core/util/test_config.h" |
| |
| #define TEST(x) run_test(x, #x) |
| |
| grpc_chttp2_hpack_compressor g_compressor; |
| int g_failure = 0; |
| |
| void** to_delete = nullptr; |
| size_t num_to_delete = 0; |
| size_t cap_to_delete = 0; |
| |
| typedef struct { |
| bool eof; |
| bool use_true_binary_metadata; |
| bool only_intern_key; |
| } verify_params; |
| |
| /* verify that the output generated by encoding the stream matches the |
| hexstring passed in */ |
| static void verify(const verify_params params, const char* expected, |
| size_t nheaders, ...) { |
| grpc_slice_buffer output; |
| grpc_slice merged; |
| grpc_slice expect = parse_hexstring(expected); |
| size_t i; |
| va_list l; |
| grpc_linked_mdelem* e = |
| static_cast<grpc_linked_mdelem*>(gpr_malloc(sizeof(*e) * nheaders)); |
| grpc_metadata_batch b; |
| |
| grpc_metadata_batch_init(&b); |
| |
| va_start(l, nheaders); |
| for (i = 0; i < nheaders; i++) { |
| char* key = va_arg(l, char*); |
| char* value = va_arg(l, char*); |
| if (i) { |
| e[i - 1].next = &e[i]; |
| e[i].prev = &e[i - 1]; |
| } |
| grpc_slice value_slice = grpc_slice_from_static_string(value); |
| if (!params.only_intern_key) { |
| value_slice = grpc_slice_intern(value_slice); |
| } |
| e[i].md = grpc_mdelem_from_slices( |
| grpc_slice_intern(grpc_slice_from_static_string(key)), value_slice); |
| } |
| e[0].prev = nullptr; |
| e[nheaders - 1].next = nullptr; |
| va_end(l); |
| |
| b.list.head = &e[0]; |
| b.list.tail = &e[nheaders - 1]; |
| b.list.count = nheaders; |
| |
| if (cap_to_delete == num_to_delete) { |
| cap_to_delete = GPR_MAX(2 * cap_to_delete, 1000); |
| to_delete = static_cast<void**>( |
| gpr_realloc(to_delete, sizeof(*to_delete) * cap_to_delete)); |
| } |
| to_delete[num_to_delete++] = e; |
| |
| grpc_slice_buffer_init(&output); |
| |
| grpc_transport_one_way_stats stats; |
| memset(&stats, 0, sizeof(stats)); |
| grpc_encode_header_options hopt = { |
| 0xdeadbeef, /* stream_id */ |
| params.eof, /* is_eof */ |
| params.use_true_binary_metadata, /* use_true_binary_metadata */ |
| 16384, /* max_frame_size */ |
| &stats /* stats */ |
| }; |
| grpc_chttp2_encode_header(&g_compressor, nullptr, 0, &b, &hopt, &output); |
| merged = grpc_slice_merge(output.slices, output.count); |
| grpc_slice_buffer_destroy_internal(&output); |
| grpc_metadata_batch_destroy(&b); |
| |
| if (!grpc_slice_eq(merged, expect)) { |
| char* expect_str = grpc_dump_slice(expect, GPR_DUMP_HEX | GPR_DUMP_ASCII); |
| char* got_str = grpc_dump_slice(merged, GPR_DUMP_HEX | GPR_DUMP_ASCII); |
| gpr_log(GPR_ERROR, "mismatched output for %s", expected); |
| gpr_log(GPR_ERROR, "EXPECT: %s", expect_str); |
| gpr_log(GPR_ERROR, "GOT: %s", got_str); |
| gpr_free(expect_str); |
| gpr_free(got_str); |
| g_failure = 1; |
| } |
| |
| grpc_slice_unref_internal(merged); |
| grpc_slice_unref_internal(expect); |
| } |
| |
| static void test_basic_headers() { |
| int i; |
| |
| verify_params params = { |
| false, |
| false, |
| false, |
| }; |
| verify(params, "000005 0104 deadbeef 40 0161 0161", 1, "a", "a"); |
| verify(params, "000001 0104 deadbeef be", 1, "a", "a"); |
| verify(params, "000001 0104 deadbeef be", 1, "a", "a"); |
| verify(params, "000006 0104 deadbeef be 40 0162 0163", 2, "a", "a", "b", "c"); |
| verify(params, "000002 0104 deadbeef bf be", 2, "a", "a", "b", "c"); |
| verify(params, "000004 0104 deadbeef 7f 00 0164", 1, "a", "d"); |
| |
| /* flush out what's there to make a few values look very popular */ |
| for (i = 0; i < 350; i++) { |
| verify(params, "000003 0104 deadbeef c0 bf be", 3, "a", "a", "b", "c", "a", |
| "d"); |
| } |
| |
| verify(params, "000006 0104 deadbeef c0 00 016b 0176", 2, "a", "a", "k", "v"); |
| /* this could be 000004 0104 deadbeef 0f 30 0176 also */ |
| verify(params, "000004 0104 deadbeef 0f 2f 0176", 1, "a", "v"); |
| } |
| |
| static void encode_int_to_str(int i, char* p) { |
| p[0] = (char)('a' + i % 26); |
| i /= 26; |
| GPR_ASSERT(i < 26); |
| p[1] = (char)('a' + i); |
| p[2] = 0; |
| } |
| |
| static void test_decode_table_overflow() { |
| int i; |
| char key[3], value[3]; |
| char* expect; |
| |
| verify_params params = { |
| false, |
| false, |
| false, |
| }; |
| |
| for (i = 0; i < 114; i++) { |
| encode_int_to_str(i, key); |
| encode_int_to_str(i + 1, value); |
| |
| if (i + 61 >= 127) { |
| gpr_asprintf(&expect, |
| "000009 0104 deadbeef ff%02x 40 02%02x%02x 02%02x%02x", |
| i + 61 - 127, key[0], key[1], value[0], value[1]); |
| } else if (i > 0) { |
| gpr_asprintf(&expect, |
| "000008 0104 deadbeef %02x 40 02%02x%02x 02%02x%02x", |
| 0x80 + 61 + i, key[0], key[1], value[0], value[1]); |
| } else { |
| gpr_asprintf(&expect, "000007 0104 deadbeef 40 02%02x%02x 02%02x%02x", |
| key[0], key[1], value[0], value[1]); |
| } |
| |
| if (i > 0) { |
| verify(params, expect, 2, "aa", "ba", key, value); |
| } else { |
| verify(params, expect, 1, key, value); |
| } |
| gpr_free(expect); |
| } |
| |
| /* if the above passes, then we must have just knocked this pair out of the |
| decoder stack, and so we'll be forced to re-encode it */ |
| verify(params, "000007 0104 deadbeef 40 026161 026261", 1, "aa", "ba"); |
| } |
| |
| static void verify_table_size_change_match_elem_size(const char* key, |
| const char* value, |
| bool use_true_binary) { |
| grpc_slice_buffer output; |
| grpc_mdelem elem = grpc_mdelem_from_slices( |
| grpc_slice_intern(grpc_slice_from_static_string(key)), |
| grpc_slice_intern(grpc_slice_from_static_string(value))); |
| size_t elem_size = grpc_mdelem_get_size_in_hpack_table(elem, use_true_binary); |
| size_t initial_table_size = g_compressor.table_size; |
| grpc_linked_mdelem* e = |
| static_cast<grpc_linked_mdelem*>(gpr_malloc(sizeof(*e))); |
| grpc_metadata_batch b; |
| grpc_metadata_batch_init(&b); |
| e[0].md = elem; |
| e[0].prev = nullptr; |
| e[0].next = nullptr; |
| b.list.head = &e[0]; |
| b.list.tail = &e[0]; |
| b.list.count = 1; |
| grpc_slice_buffer_init(&output); |
| |
| grpc_transport_one_way_stats stats; |
| memset(&stats, 0, sizeof(stats)); |
| grpc_encode_header_options hopt = { |
| 0xdeadbeef, /* stream_id */ |
| false, /* is_eof */ |
| use_true_binary, /* use_true_binary_metadata */ |
| 16384, /* max_frame_size */ |
| &stats /* stats */}; |
| grpc_chttp2_encode_header(&g_compressor, nullptr, 0, &b, &hopt, &output); |
| grpc_slice_buffer_destroy_internal(&output); |
| grpc_metadata_batch_destroy(&b); |
| |
| GPR_ASSERT(g_compressor.table_size == elem_size + initial_table_size); |
| gpr_free(e); |
| } |
| |
| static void test_encode_header_size() { |
| verify_table_size_change_match_elem_size("hello", "world", false); |
| verify_table_size_change_match_elem_size("hello-bin", "world", false); |
| verify_table_size_change_match_elem_size("true-binary-bin", |
| "I_am_true_binary_value", true); |
| } |
| |
| static void test_interned_key_indexed() { |
| int i; |
| verify_params params = {false, false, true}; |
| verify(params, "000009 0104 deadbeef 40 0161 0162 0f2f 0163", 2, "a", "b", |
| "a", "c"); |
| for (i = 0; i < 10; i++) { |
| verify(params, "000008 0104 deadbeef 0f2f 0162 0f2f 0163", 2, "a", "b", "a", |
| "c"); |
| } |
| } |
| |
| static void run_test(void (*test)(), const char* name) { |
| gpr_log(GPR_INFO, "RUN TEST: %s", name); |
| grpc_core::ExecCtx exec_ctx; |
| grpc_chttp2_hpack_compressor_init(&g_compressor); |
| test(); |
| grpc_chttp2_hpack_compressor_destroy(&g_compressor); |
| } |
| |
| int main(int argc, char** argv) { |
| size_t i; |
| grpc_test_only_set_slice_hash_seed(0); |
| grpc_test_init(argc, argv); |
| grpc_init(); |
| TEST(test_basic_headers); |
| TEST(test_decode_table_overflow); |
| TEST(test_encode_header_size); |
| TEST(test_interned_key_indexed); |
| grpc_shutdown(); |
| for (i = 0; i < num_to_delete; i++) { |
| gpr_free(to_delete[i]); |
| } |
| return g_failure; |
| } |