diff options
Diffstat (limited to 'src/core/ext/transport/chttp2/transport/parsing.c')
| -rw-r--r-- | src/core/ext/transport/chttp2/transport/parsing.c | 508 |
1 files changed, 296 insertions, 212 deletions
diff --git a/src/core/ext/transport/chttp2/transport/parsing.c b/src/core/ext/transport/chttp2/transport/parsing.c index 2995066e51..991d7729af 100644 --- a/src/core/ext/transport/chttp2/transport/parsing.c +++ b/src/core/ext/transport/chttp2/transport/parsing.c @@ -45,30 +45,34 @@ #include "src/core/lib/profiling/timers.h" #include "src/core/lib/transport/static_metadata.h" -static int init_frame_parser(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing); -static int init_header_frame_parser( +#define TRANSPORT_FROM_PARSING(tp) \ + ((grpc_chttp2_transport *)((char *)(tp)-offsetof(grpc_chttp2_transport, \ + parsing))) + +static grpc_error *init_frame_parser( + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); +static grpc_error *init_header_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, int is_continuation); -static int init_data_frame_parser( +static grpc_error *init_data_frame_parser( + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); +static grpc_error *init_rst_stream_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static int init_rst_stream_parser( +static grpc_error *init_settings_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static int init_settings_frame_parser( +static grpc_error *init_window_update_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static int init_window_update_frame_parser( +static grpc_error *init_ping_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); -static int init_ping_parser(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing); -static int init_goaway_parser(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing); -static int init_skip_frame_parser( +static grpc_error *init_goaway_parser( + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing); +static grpc_error *init_skip_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, int is_header); -static int parse_frame_slice(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing, - gpr_slice slice, int is_last); +static grpc_error *parse_frame_slice( + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, + gpr_slice slice, int is_last); void grpc_chttp2_prepare_to_read( grpc_chttp2_transport_global *transport_global, @@ -170,7 +174,9 @@ void grpc_chttp2_publish_reads( while (grpc_chttp2_list_pop_parsing_seen_stream( transport_global, transport_parsing, &stream_global, &stream_parsing)) { if (stream_parsing->seen_error) { - stream_global->seen_error = 1; + stream_global->seen_error = true; + stream_global->exceeded_metadata_size = + stream_parsing->exceeded_metadata_size; grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); } @@ -224,38 +230,42 @@ void grpc_chttp2_publish_reads( grpc_chttp2_list_add_check_read_ops(transport_global, stream_global); } - if (stream_parsing->saw_rst_stream) { - if (stream_parsing->rst_stream_reason != GRPC_CHTTP2_NO_ERROR) { - grpc_status_code status_code = grpc_chttp2_http2_error_to_grpc_status( - (grpc_chttp2_error_code)stream_parsing->rst_stream_reason); - char *status_details; - gpr_slice slice_details; - gpr_asprintf(&status_details, "Received RST_STREAM err=%d", - stream_parsing->rst_stream_reason); - slice_details = gpr_slice_from_copied_string(status_details); - gpr_free(status_details); + if (stream_parsing->forced_close_error != GRPC_ERROR_NONE) { + intptr_t reason; + bool has_reason = grpc_error_get_int(stream_parsing->forced_close_error, + GRPC_ERROR_INT_HTTP2_ERROR, &reason); + if (has_reason && reason != GRPC_CHTTP2_NO_ERROR) { + grpc_status_code status_code = + has_reason ? grpc_chttp2_http2_error_to_grpc_status( + (grpc_chttp2_error_code)reason) + : GRPC_STATUS_INTERNAL; + const char *status_details = + grpc_error_string(stream_parsing->forced_close_error); + gpr_slice slice_details = gpr_slice_from_copied_string(status_details); + grpc_error_free_string(status_details); grpc_chttp2_fake_status(exec_ctx, transport_global, stream_global, status_code, &slice_details); } grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global, - 1, 1); + 1, 1, stream_parsing->forced_close_error); } if (stream_parsing->received_close) { grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global, - 1, 0); + 1, 0, GRPC_ERROR_NONE); } } } -int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing, - gpr_slice slice) { +grpc_error *grpc_chttp2_perform_read( + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, + gpr_slice slice) { uint8_t *beg = GPR_SLICE_START_PTR(slice); uint8_t *end = GPR_SLICE_END_PTR(slice); uint8_t *cur = beg; + grpc_error *err; - if (cur == end) return 1; + if (cur == end) return GRPC_ERROR_NONE; switch (transport_parsing->deframe_state) { case GRPC_DTS_CLIENT_PREFIX_0: @@ -285,21 +295,25 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, while (cur != end && transport_parsing->deframe_state != GRPC_DTS_FH_0) { if (*cur != GRPC_CHTTP2_CLIENT_CONNECT_STRING[transport_parsing ->deframe_state]) { - gpr_log(GPR_INFO, - "Connect string mismatch: expected '%c' (%d) got '%c' (%d) " - "at byte %d", - GRPC_CHTTP2_CLIENT_CONNECT_STRING[transport_parsing - ->deframe_state], - (int)(uint8_t)GRPC_CHTTP2_CLIENT_CONNECT_STRING - [transport_parsing->deframe_state], - *cur, (int)*cur, transport_parsing->deframe_state); - return 0; + char *msg; + gpr_asprintf( + &msg, + "Connect string mismatch: expected '%c' (%d) got '%c' (%d) " + "at byte %d", + GRPC_CHTTP2_CLIENT_CONNECT_STRING[transport_parsing + ->deframe_state], + (int)(uint8_t)GRPC_CHTTP2_CLIENT_CONNECT_STRING + [transport_parsing->deframe_state], + *cur, (int)*cur, transport_parsing->deframe_state); + err = GRPC_ERROR_CREATE(msg); + gpr_free(msg); + return err; } ++cur; ++transport_parsing->deframe_state; } if (cur == end) { - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ dts_fh_0: @@ -308,7 +322,7 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_frame_size = ((uint32_t)*cur) << 16; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_1; - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_1: @@ -316,7 +330,7 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_frame_size |= ((uint32_t)*cur) << 8; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_2; - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_2: @@ -324,7 +338,7 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_frame_size |= *cur; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_3; - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_3: @@ -332,7 +346,7 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_frame_type = *cur; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_4; - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_4: @@ -340,7 +354,7 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_frame_flags = *cur; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_5; - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_5: @@ -348,7 +362,7 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_stream_id = (((uint32_t)*cur) & 0x7f) << 24; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_6; - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_6: @@ -356,7 +370,7 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_stream_id |= ((uint32_t)*cur) << 16; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_7; - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_7: @@ -364,15 +378,16 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_stream_id |= ((uint32_t)*cur) << 8; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_8; - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FH_8: GPR_ASSERT(cur < end); transport_parsing->incoming_stream_id |= ((uint32_t)*cur); transport_parsing->deframe_state = GRPC_DTS_FRAME; - if (!init_frame_parser(exec_ctx, transport_parsing)) { - return 0; + err = init_frame_parser(exec_ctx, transport_parsing); + if (err != GRPC_ERROR_NONE) { + return err; } if (transport_parsing->incoming_stream_id != 0 && transport_parsing->incoming_stream_id > @@ -381,62 +396,69 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, transport_parsing->incoming_stream_id; } if (transport_parsing->incoming_frame_size == 0) { - if (!parse_frame_slice(exec_ctx, transport_parsing, gpr_empty_slice(), - 1)) { - return 0; + err = parse_frame_slice(exec_ctx, transport_parsing, gpr_empty_slice(), + 1); + if (err != GRPC_ERROR_NONE) { + return err; } transport_parsing->incoming_stream = NULL; if (++cur == end) { transport_parsing->deframe_state = GRPC_DTS_FH_0; - return 1; + return GRPC_ERROR_NONE; } goto dts_fh_0; /* loop */ } else if (transport_parsing->incoming_frame_size > transport_parsing->max_frame_size) { - gpr_log(GPR_DEBUG, "Frame size %d is larger than max frame size %d", - transport_parsing->incoming_frame_size, - transport_parsing->max_frame_size); - return 0; + char *msg; + gpr_asprintf(&msg, "Frame size %d is larger than max frame size %d", + transport_parsing->incoming_frame_size, + transport_parsing->max_frame_size); + err = GRPC_ERROR_CREATE(msg); + gpr_free(msg); + return err; } if (++cur == end) { - return 1; + return GRPC_ERROR_NONE; } /* fallthrough */ case GRPC_DTS_FRAME: GPR_ASSERT(cur < end); if ((uint32_t)(end - cur) == transport_parsing->incoming_frame_size) { - if (!parse_frame_slice(exec_ctx, transport_parsing, - gpr_slice_sub_no_ref(slice, (size_t)(cur - beg), - (size_t)(end - beg)), - 1)) { - return 0; + err = parse_frame_slice(exec_ctx, transport_parsing, + gpr_slice_sub_no_ref(slice, (size_t)(cur - beg), + (size_t)(end - beg)), + 1); + if (err != GRPC_ERROR_NONE) { + return err; } transport_parsing->deframe_state = GRPC_DTS_FH_0; transport_parsing->incoming_stream = NULL; - return 1; + return GRPC_ERROR_NONE; } else if ((uint32_t)(end - cur) > transport_parsing->incoming_frame_size) { size_t cur_offset = (size_t)(cur - beg); - if (!parse_frame_slice( - exec_ctx, transport_parsing, - gpr_slice_sub_no_ref( - slice, cur_offset, - cur_offset + transport_parsing->incoming_frame_size), - 1)) { - return 0; + err = parse_frame_slice( + exec_ctx, transport_parsing, + gpr_slice_sub_no_ref( + slice, cur_offset, + cur_offset + transport_parsing->incoming_frame_size), + 1); + if (err != GRPC_ERROR_NONE) { + return err; } cur += transport_parsing->incoming_frame_size; transport_parsing->incoming_stream = NULL; goto dts_fh_0; /* loop */ } else { - if (!parse_frame_slice(exec_ctx, transport_parsing, - gpr_slice_sub_no_ref(slice, (size_t)(cur - beg), - (size_t)(end - beg)), - 0)) { - return 0; + err = parse_frame_slice(exec_ctx, transport_parsing, + gpr_slice_sub_no_ref(slice, (size_t)(cur - beg), + (size_t)(end - beg)), + 0); + if (err != GRPC_ERROR_NONE) { + return err; } transport_parsing->incoming_frame_size -= (uint32_t)(end - cur); - return 1; + return GRPC_ERROR_NONE; } GPR_UNREACHABLE_CODE(return 0); } @@ -444,23 +466,41 @@ int grpc_chttp2_perform_read(grpc_exec_ctx *exec_ctx, GPR_UNREACHABLE_CODE(return 0); } -static int init_frame_parser(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing) { +static grpc_error *init_frame_parser( + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { + if (transport_parsing->is_first_frame && + transport_parsing->incoming_frame_type != GRPC_CHTTP2_FRAME_SETTINGS) { + char *msg; + gpr_asprintf( + &msg, "Expected SETTINGS frame as the first frame, got frame type %d", + transport_parsing->incoming_frame_type); + grpc_error *err = GRPC_ERROR_CREATE(msg); + gpr_free(msg); + return err; + } + transport_parsing->is_first_frame = false; if (transport_parsing->expect_continuation_stream_id != 0) { if (transport_parsing->incoming_frame_type != GRPC_CHTTP2_FRAME_CONTINUATION) { - gpr_log(GPR_ERROR, "Expected CONTINUATION frame, got frame type %02x", - transport_parsing->incoming_frame_type); - return 0; + char *msg; + gpr_asprintf(&msg, "Expected CONTINUATION frame, got frame type %02x", + transport_parsing->incoming_frame_type); + grpc_error *err = GRPC_ERROR_CREATE(msg); + gpr_free(msg); + return err; } if (transport_parsing->expect_continuation_stream_id != transport_parsing->incoming_stream_id) { - gpr_log(GPR_ERROR, - "Expected CONTINUATION frame for grpc_chttp2_stream %08x, got " - "grpc_chttp2_stream %08x", - transport_parsing->expect_continuation_stream_id, - transport_parsing->incoming_stream_id); - return 0; + char *msg; + gpr_asprintf( + &msg, + "Expected CONTINUATION frame for grpc_chttp2_stream %08x, got " + "grpc_chttp2_stream %08x", + transport_parsing->expect_continuation_stream_id, + transport_parsing->incoming_stream_id); + grpc_error *err = GRPC_ERROR_CREATE(msg); + gpr_free(msg); + return err; } return init_header_frame_parser(exec_ctx, transport_parsing, 1); } @@ -470,8 +510,7 @@ static int init_frame_parser(grpc_exec_ctx *exec_ctx, case GRPC_CHTTP2_FRAME_HEADER: return init_header_frame_parser(exec_ctx, transport_parsing, 0); case GRPC_CHTTP2_FRAME_CONTINUATION: - gpr_log(GPR_ERROR, "Unexpected CONTINUATION frame"); - return 0; + return GRPC_ERROR_CREATE("Unexpected CONTINUATION frame"); case GRPC_CHTTP2_FRAME_RST_STREAM: return init_rst_stream_parser(exec_ctx, transport_parsing); case GRPC_CHTTP2_FRAME_SETTINGS: @@ -483,22 +522,24 @@ static int init_frame_parser(grpc_exec_ctx *exec_ctx, case GRPC_CHTTP2_FRAME_GOAWAY: return init_goaway_parser(exec_ctx, transport_parsing); default: - gpr_log(GPR_ERROR, "Unknown frame type %02x", - transport_parsing->incoming_frame_type); + if (grpc_http_trace) { + gpr_log(GPR_ERROR, "Unknown frame type %02x", + transport_parsing->incoming_frame_type); + } return init_skip_frame_parser(exec_ctx, transport_parsing, 0); } } -static grpc_chttp2_parse_error skip_parser( - grpc_exec_ctx *exec_ctx, void *parser, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { - return GRPC_CHTTP2_PARSE_OK; +static grpc_error *skip_parser(grpc_exec_ctx *exec_ctx, void *parser, + grpc_chttp2_transport_parsing *transport_parsing, + grpc_chttp2_stream_parsing *stream_parsing, + gpr_slice slice, int is_last) { + return GRPC_ERROR_NONE; } static void skip_header(void *tp, grpc_mdelem *md) { GRPC_MDELEM_UNREF(md); } -static int init_skip_frame_parser( +static grpc_error *init_skip_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, int is_header) { if (is_header) { @@ -513,7 +554,7 @@ static int init_skip_frame_parser( } else { transport_parsing->parser = skip_parser; } - return 1; + return GRPC_ERROR_NONE; } void grpc_chttp2_parsing_become_skip_parser( @@ -523,22 +564,28 @@ void grpc_chttp2_parsing_become_skip_parser( transport_parsing->parser == grpc_chttp2_header_parser_parse); } -static grpc_chttp2_parse_error update_incoming_window( +static grpc_error *update_incoming_window( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, grpc_chttp2_stream_parsing *stream_parsing) { uint32_t incoming_frame_size = transport_parsing->incoming_frame_size; if (incoming_frame_size > transport_parsing->incoming_window) { - gpr_log(GPR_ERROR, "frame of size %d overflows incoming window of %d", - transport_parsing->incoming_frame_size, - transport_parsing->incoming_window); - return GRPC_CHTTP2_CONNECTION_ERROR; + char *msg; + gpr_asprintf(&msg, "frame of size %d overflows incoming window of %" PRId64, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_window); + grpc_error *err = GRPC_ERROR_CREATE(msg); + gpr_free(msg); + return err; } if (incoming_frame_size > stream_parsing->incoming_window) { - gpr_log(GPR_ERROR, "frame of size %d overflows incoming window of %d", - transport_parsing->incoming_frame_size, - stream_parsing->incoming_window); - return GRPC_CHTTP2_CONNECTION_ERROR; + char *msg; + gpr_asprintf(&msg, "frame of size %d overflows incoming window of %" PRId64, + transport_parsing->incoming_frame_size, + stream_parsing->incoming_window); + grpc_error *err = GRPC_ERROR_CREATE(msg); + gpr_free(msg); + return err; } GRPC_CHTTP2_FLOW_DEBIT_TRANSPORT("parse", transport_parsing, incoming_window, @@ -549,15 +596,15 @@ static grpc_chttp2_parse_error update_incoming_window( grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing); - return GRPC_CHTTP2_PARSE_OK; + return GRPC_ERROR_NONE; } -static int init_data_frame_parser( +static grpc_error *init_data_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { grpc_chttp2_stream_parsing *stream_parsing = grpc_chttp2_parsing_lookup_stream(transport_parsing, transport_parsing->incoming_stream_id); - grpc_chttp2_parse_error err = GRPC_CHTTP2_PARSE_OK; + grpc_error *err = GRPC_ERROR_NONE; if (stream_parsing == NULL) { return init_skip_frame_parser(exec_ctx, transport_parsing, 0); } @@ -565,33 +612,32 @@ static int init_data_frame_parser( if (stream_parsing->received_close) { return init_skip_frame_parser(exec_ctx, transport_parsing, 0); } - if (err == GRPC_CHTTP2_PARSE_OK) { + if (err == GRPC_ERROR_NONE) { err = update_incoming_window(exec_ctx, transport_parsing, stream_parsing); } - if (err == GRPC_CHTTP2_PARSE_OK) { + if (err == GRPC_ERROR_NONE) { err = grpc_chttp2_data_parser_begin_frame( - &stream_parsing->data_parser, transport_parsing->incoming_frame_flags); - } - switch (err) { - case GRPC_CHTTP2_PARSE_OK: - transport_parsing->incoming_stream = stream_parsing; - transport_parsing->parser = grpc_chttp2_data_parser_parse; - transport_parsing->parser_data = &stream_parsing->data_parser; - return 1; - case GRPC_CHTTP2_STREAM_ERROR: - stream_parsing->received_close = 1; - stream_parsing->saw_rst_stream = 1; - stream_parsing->rst_stream_reason = GRPC_CHTTP2_PROTOCOL_ERROR; - gpr_slice_buffer_add( - &transport_parsing->qbuf, - grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id, - GRPC_CHTTP2_PROTOCOL_ERROR, - &stream_parsing->stats.outgoing)); - return init_skip_frame_parser(exec_ctx, transport_parsing, 0); - case GRPC_CHTTP2_CONNECTION_ERROR: - return 0; + &stream_parsing->data_parser, transport_parsing->incoming_frame_flags, + stream_parsing->id); + } + if (err == GRPC_ERROR_NONE) { + transport_parsing->incoming_stream = stream_parsing; + transport_parsing->parser = grpc_chttp2_data_parser_parse; + transport_parsing->parser_data = &stream_parsing->data_parser; + return GRPC_ERROR_NONE; + } else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, NULL)) { + /* handle stream errors by closing the stream */ + stream_parsing->received_close = 1; + stream_parsing->forced_close_error = err; + gpr_slice_buffer_add( + &transport_parsing->qbuf, + grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id, + GRPC_CHTTP2_PROTOCOL_ERROR, + &stream_parsing->stats.outgoing)); + return init_skip_frame_parser(exec_ctx, transport_parsing, 0); + } else { + return err; } - GPR_UNREACHABLE_CODE(return 0); } static void free_timeout(void *p) { gpr_free(p); } @@ -612,7 +658,7 @@ static void on_initial_header(void *tp, grpc_mdelem *md) { if (md->key == GRPC_MDSTR_GRPC_STATUS && md != GRPC_MDELEM_GRPC_STATUS_0) { /* TODO(ctiller): check for a status like " 0" */ - stream_parsing->seen_error = 1; + stream_parsing->seen_error = true; } if (md->key == GRPC_MDSTR_GRPC_TIMEOUT) { @@ -633,8 +679,27 @@ static void on_initial_header(void *tp, grpc_mdelem *md) { gpr_time_add(gpr_now(GPR_CLOCK_MONOTONIC), *cached_timeout)); GRPC_MDELEM_UNREF(md); } else { - grpc_chttp2_incoming_metadata_buffer_add( - &stream_parsing->metadata_buffer[0], md); + const size_t new_size = + stream_parsing->metadata_buffer[0].size + GRPC_MDELEM_LENGTH(md); + grpc_chttp2_transport_global *transport_global = + &TRANSPORT_FROM_PARSING(transport_parsing)->global; + const size_t metadata_size_limit = + transport_global->settings[GRPC_LOCAL_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; + if (new_size > metadata_size_limit) { + if (!stream_parsing->exceeded_metadata_size) { + gpr_log(GPR_DEBUG, + "received initial metadata size exceeds limit (%" PRIuPTR + " vs. %" PRIuPTR ")", + new_size, metadata_size_limit); + stream_parsing->seen_error = true; + stream_parsing->exceeded_metadata_size = true; + } + GRPC_MDELEM_UNREF(md); + } else { + grpc_chttp2_incoming_metadata_buffer_add( + &stream_parsing->metadata_buffer[0], md); + } } grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing); @@ -658,18 +723,37 @@ static void on_trailing_header(void *tp, grpc_mdelem *md) { if (md->key == GRPC_MDSTR_GRPC_STATUS && md != GRPC_MDELEM_GRPC_STATUS_0) { /* TODO(ctiller): check for a status like " 0" */ - stream_parsing->seen_error = 1; + stream_parsing->seen_error = true; + } + + const size_t new_size = + stream_parsing->metadata_buffer[1].size + GRPC_MDELEM_LENGTH(md); + grpc_chttp2_transport_global *transport_global = + &TRANSPORT_FROM_PARSING(transport_parsing)->global; + const size_t metadata_size_limit = + transport_global->settings[GRPC_LOCAL_SETTINGS] + [GRPC_CHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE]; + if (new_size > metadata_size_limit) { + if (!stream_parsing->exceeded_metadata_size) { + gpr_log(GPR_DEBUG, + "received trailing metadata size exceeds limit (%" PRIuPTR + " vs. %" PRIuPTR ")", + new_size, metadata_size_limit); + stream_parsing->seen_error = true; + stream_parsing->exceeded_metadata_size = true; + } + GRPC_MDELEM_UNREF(md); + } else { + grpc_chttp2_incoming_metadata_buffer_add( + &stream_parsing->metadata_buffer[1], md); } - grpc_chttp2_incoming_metadata_buffer_add(&stream_parsing->metadata_buffer[1], - md); - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, stream_parsing); GPR_TIMER_END("on_trailing_header", 0); } -static int init_header_frame_parser( +static grpc_error *init_header_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, int is_continuation) { uint8_t is_eoh = (transport_parsing->incoming_frame_flags & @@ -764,15 +848,16 @@ static int init_header_frame_parser( GRPC_CHTTP2_FLAG_HAS_PRIORITY)) { grpc_chttp2_hpack_parser_set_has_priority(&transport_parsing->hpack_parser); } - return 1; + return GRPC_ERROR_NONE; } -static int init_window_update_frame_parser( +static grpc_error *init_window_update_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { - int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_window_update_parser_begin_frame( - &transport_parsing->simple.window_update, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags); + grpc_error *err = grpc_chttp2_window_update_parser_begin_frame( + &transport_parsing->simple.window_update, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags); + if (err != GRPC_ERROR_NONE) return err; if (transport_parsing->incoming_stream_id != 0) { grpc_chttp2_stream_parsing *stream_parsing = transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream( @@ -784,26 +869,27 @@ static int init_window_update_frame_parser( } transport_parsing->parser = grpc_chttp2_window_update_parser_parse; transport_parsing->parser_data = &transport_parsing->simple.window_update; - return ok; + return GRPC_ERROR_NONE; } -static int init_ping_parser(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing) { - int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_ping_parser_begin_frame( - &transport_parsing->simple.ping, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags); +static grpc_error *init_ping_parser( + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { + grpc_error *err = grpc_chttp2_ping_parser_begin_frame( + &transport_parsing->simple.ping, transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags); + if (err != GRPC_ERROR_NONE) return err; transport_parsing->parser = grpc_chttp2_ping_parser_parse; transport_parsing->parser_data = &transport_parsing->simple.ping; - return ok; + return GRPC_ERROR_NONE; } -static int init_rst_stream_parser( +static grpc_error *init_rst_stream_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { - int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_rst_stream_parser_begin_frame( - &transport_parsing->simple.rst_stream, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags); + grpc_error *err = grpc_chttp2_rst_stream_parser_begin_frame( + &transport_parsing->simple.rst_stream, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags); + if (err != GRPC_ERROR_NONE) return err; grpc_chttp2_stream_parsing *stream_parsing = transport_parsing->incoming_stream = grpc_chttp2_parsing_lookup_stream( transport_parsing, transport_parsing->incoming_stream_id); @@ -813,37 +899,32 @@ static int init_rst_stream_parser( stream_parsing->stats.incoming.framing_bytes += 9; transport_parsing->parser = grpc_chttp2_rst_stream_parser_parse; transport_parsing->parser_data = &transport_parsing->simple.rst_stream; - return ok; + return GRPC_ERROR_NONE; } -static int init_goaway_parser( +static grpc_error *init_goaway_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { - int ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_goaway_parser_begin_frame( - &transport_parsing->goaway_parser, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags); + grpc_error *err = grpc_chttp2_goaway_parser_begin_frame( + &transport_parsing->goaway_parser, transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags); + if (err != GRPC_ERROR_NONE) return err; transport_parsing->parser = grpc_chttp2_goaway_parser_parse; transport_parsing->parser_data = &transport_parsing->goaway_parser; - return ok; + return GRPC_ERROR_NONE; } -static int init_settings_frame_parser( +static grpc_error *init_settings_frame_parser( grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing) { - int ok; - if (transport_parsing->incoming_stream_id != 0) { - gpr_log(GPR_ERROR, "settings frame received for grpc_chttp2_stream %d", - transport_parsing->incoming_stream_id); - return 0; + return GRPC_ERROR_CREATE("Settings frame received for grpc_chttp2_stream"); } - ok = GRPC_CHTTP2_PARSE_OK == grpc_chttp2_settings_parser_begin_frame( - &transport_parsing->simple.settings, - transport_parsing->incoming_frame_size, - transport_parsing->incoming_frame_flags, - transport_parsing->settings); - if (!ok) { - return 0; + grpc_error *err = grpc_chttp2_settings_parser_begin_frame( + &transport_parsing->simple.settings, + transport_parsing->incoming_frame_size, + transport_parsing->incoming_frame_flags, transport_parsing->settings); + if (err != GRPC_ERROR_NONE) { + return err; } if (transport_parsing->incoming_frame_flags & GRPC_CHTTP2_FLAG_ACK) { transport_parsing->settings_ack_received = 1; @@ -857,7 +938,7 @@ static int init_settings_frame_parser( } transport_parsing->parser = grpc_chttp2_settings_parser_parse; transport_parsing->parser_data = &transport_parsing->simple.settings; - return ok; + return GRPC_ERROR_NONE; } /* @@ -866,34 +947,37 @@ static int is_window_update_legal(int64_t window_update, int64_t window) { } */ -static int parse_frame_slice(grpc_exec_ctx *exec_ctx, - grpc_chttp2_transport_parsing *transport_parsing, - gpr_slice slice, int is_last) { +static grpc_error *parse_frame_slice( + grpc_exec_ctx *exec_ctx, grpc_chttp2_transport_parsing *transport_parsing, + gpr_slice slice, int is_last) { grpc_chttp2_stream_parsing *stream_parsing = transport_parsing->incoming_stream; - switch (transport_parsing->parser(exec_ctx, transport_parsing->parser_data, - transport_parsing, stream_parsing, slice, - is_last)) { - case GRPC_CHTTP2_PARSE_OK: - if (stream_parsing) { - grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, - stream_parsing); - } - return 1; - case GRPC_CHTTP2_STREAM_ERROR: - grpc_chttp2_parsing_become_skip_parser(exec_ctx, transport_parsing); - if (stream_parsing) { - stream_parsing->saw_rst_stream = 1; - stream_parsing->rst_stream_reason = GRPC_CHTTP2_PROTOCOL_ERROR; - gpr_slice_buffer_add( - &transport_parsing->qbuf, - grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id, - GRPC_CHTTP2_PROTOCOL_ERROR, - &stream_parsing->stats.outgoing)); - } - return 1; - case GRPC_CHTTP2_CONNECTION_ERROR: - return 0; + grpc_error *err = transport_parsing->parser( + exec_ctx, transport_parsing->parser_data, transport_parsing, + stream_parsing, slice, is_last); + if (err == GRPC_ERROR_NONE) { + if (stream_parsing) { + grpc_chttp2_list_add_parsing_seen_stream(transport_parsing, + stream_parsing); + } + return GRPC_ERROR_NONE; + } else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, NULL)) { + if (grpc_http_trace) { + const char *msg = grpc_error_string(err); + gpr_log(GPR_ERROR, "%s", msg); + grpc_error_free_string(msg); + } + grpc_chttp2_parsing_become_skip_parser(exec_ctx, transport_parsing); + if (stream_parsing) { + stream_parsing->forced_close_error = err; + gpr_slice_buffer_add( + &transport_parsing->qbuf, + grpc_chttp2_rst_stream_create(transport_parsing->incoming_stream_id, + GRPC_CHTTP2_PROTOCOL_ERROR, + &stream_parsing->stats.outgoing)); + } else { + GRPC_ERROR_UNREF(err); + } } - GPR_UNREACHABLE_CODE(return 0); + return err; } |