diff options
Diffstat (limited to 'src/core/lib/transport/chttp2/frame_settings.c')
| -rw-r--r-- | src/core/lib/transport/chttp2/frame_settings.c | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/src/core/lib/transport/chttp2/frame_settings.c b/src/core/lib/transport/chttp2/frame_settings.c deleted file mode 100644 index 48429c2a78..0000000000 --- a/src/core/lib/transport/chttp2/frame_settings.c +++ /dev/null @@ -1,259 +0,0 @@ -/* - * - * Copyright 2015-2016, 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 "src/core/lib/transport/chttp2/frame_settings.h" -#include "src/core/lib/transport/chttp2/internal.h" - -#include <string.h> - -#include <grpc/support/log.h> -#include <grpc/support/useful.h> - -#include "src/core/lib/debug/trace.h" -#include "src/core/lib/transport/chttp2/frame.h" -#include "src/core/lib/transport/chttp2/http2_errors.h" -#include "src/core/lib/transport/chttp2_transport.h" - -#define MAX_MAX_HEADER_LIST_SIZE (1024 * 1024 * 1024) - -/* HTTP/2 mandated initial connection settings */ -const grpc_chttp2_setting_parameters - grpc_chttp2_settings_parameters[GRPC_CHTTP2_NUM_SETTINGS] = { - {NULL, 0, 0, 0, GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE, - GRPC_CHTTP2_PROTOCOL_ERROR}, - {"HEADER_TABLE_SIZE", 4096, 0, 0xffffffff, - GRPC_CHTTP2_CLAMP_INVALID_VALUE, GRPC_CHTTP2_PROTOCOL_ERROR}, - {"ENABLE_PUSH", 1, 0, 1, GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE, - GRPC_CHTTP2_PROTOCOL_ERROR}, - {"MAX_CONCURRENT_STREAMS", 0xffffffffu, 0, 0xffffffffu, - GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE, GRPC_CHTTP2_PROTOCOL_ERROR}, - {"INITIAL_WINDOW_SIZE", 65535, 0, 0x7fffffffu, - GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE, - GRPC_CHTTP2_FLOW_CONTROL_ERROR}, - {"MAX_FRAME_SIZE", 16384, 16384, 16777215, - GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE, GRPC_CHTTP2_PROTOCOL_ERROR}, - {"MAX_HEADER_LIST_SIZE", MAX_MAX_HEADER_LIST_SIZE, 0, - MAX_MAX_HEADER_LIST_SIZE, GRPC_CHTTP2_CLAMP_INVALID_VALUE, - GRPC_CHTTP2_PROTOCOL_ERROR}, -}; - -static uint8_t *fill_header(uint8_t *out, uint32_t length, uint8_t flags) { - *out++ = (uint8_t)(length >> 16); - *out++ = (uint8_t)(length >> 8); - *out++ = (uint8_t)(length); - *out++ = GRPC_CHTTP2_FRAME_SETTINGS; - *out++ = flags; - *out++ = 0; - *out++ = 0; - *out++ = 0; - *out++ = 0; - return out; -} - -gpr_slice grpc_chttp2_settings_create(uint32_t *old, const uint32_t *new, - uint32_t force_mask, size_t count) { - size_t i; - uint32_t n = 0; - gpr_slice output; - uint8_t *p; - - for (i = 0; i < count; i++) { - n += (new[i] != old[i] || (force_mask & (1u << i)) != 0); - } - - output = gpr_slice_malloc(9 + 6 * n); - p = fill_header(GPR_SLICE_START_PTR(output), 6 * n, 0); - - for (i = 0; i < count; i++) { - if (new[i] != old[i] || (force_mask & (1u << i)) != 0) { - GPR_ASSERT(i); - *p++ = (uint8_t)(i >> 8); - *p++ = (uint8_t)(i); - *p++ = (uint8_t)(new[i] >> 24); - *p++ = (uint8_t)(new[i] >> 16); - *p++ = (uint8_t)(new[i] >> 8); - *p++ = (uint8_t)(new[i]); - old[i] = new[i]; - } - } - - GPR_ASSERT(p == GPR_SLICE_END_PTR(output)); - - return output; -} - -gpr_slice grpc_chttp2_settings_ack_create(void) { - gpr_slice output = gpr_slice_malloc(9); - fill_header(GPR_SLICE_START_PTR(output), 0, GRPC_CHTTP2_FLAG_ACK); - return output; -} - -grpc_chttp2_parse_error grpc_chttp2_settings_parser_begin_frame( - grpc_chttp2_settings_parser *parser, uint32_t length, uint8_t flags, - uint32_t *settings) { - parser->target_settings = settings; - memcpy(parser->incoming_settings, settings, - GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t)); - parser->is_ack = 0; - parser->state = GRPC_CHTTP2_SPS_ID0; - if (flags == GRPC_CHTTP2_FLAG_ACK) { - parser->is_ack = 1; - if (length != 0) { - gpr_log(GPR_ERROR, "non-empty settings ack frame received"); - return GRPC_CHTTP2_CONNECTION_ERROR; - } - return GRPC_CHTTP2_PARSE_OK; - } else if (flags != 0) { - gpr_log(GPR_ERROR, "invalid flags on settings frame"); - return GRPC_CHTTP2_CONNECTION_ERROR; - } else if (length % 6 != 0) { - gpr_log(GPR_ERROR, "settings frames must be a multiple of six bytes"); - return GRPC_CHTTP2_CONNECTION_ERROR; - } else { - return GRPC_CHTTP2_PARSE_OK; - } -} - -grpc_chttp2_parse_error grpc_chttp2_settings_parser_parse( - grpc_exec_ctx *exec_ctx, void *p, - grpc_chttp2_transport_parsing *transport_parsing, - grpc_chttp2_stream_parsing *stream_parsing, gpr_slice slice, int is_last) { - grpc_chttp2_settings_parser *parser = p; - const uint8_t *cur = GPR_SLICE_START_PTR(slice); - const uint8_t *end = GPR_SLICE_END_PTR(slice); - - if (parser->is_ack) { - return GRPC_CHTTP2_PARSE_OK; - } - - for (;;) { - switch (parser->state) { - case GRPC_CHTTP2_SPS_ID0: - if (cur == end) { - parser->state = GRPC_CHTTP2_SPS_ID0; - if (is_last) { - transport_parsing->settings_updated = 1; - memcpy(parser->target_settings, parser->incoming_settings, - GRPC_CHTTP2_NUM_SETTINGS * sizeof(uint32_t)); - gpr_slice_buffer_add(&transport_parsing->qbuf, - grpc_chttp2_settings_ack_create()); - } - return GRPC_CHTTP2_PARSE_OK; - } - parser->id = (uint16_t)(((uint16_t)*cur) << 8); - cur++; - /* fallthrough */ - case GRPC_CHTTP2_SPS_ID1: - if (cur == end) { - parser->state = GRPC_CHTTP2_SPS_ID1; - return GRPC_CHTTP2_PARSE_OK; - } - parser->id = (uint16_t)(parser->id | (*cur)); - cur++; - /* fallthrough */ - case GRPC_CHTTP2_SPS_VAL0: - if (cur == end) { - parser->state = GRPC_CHTTP2_SPS_VAL0; - return GRPC_CHTTP2_PARSE_OK; - } - parser->value = ((uint32_t)*cur) << 24; - cur++; - /* fallthrough */ - case GRPC_CHTTP2_SPS_VAL1: - if (cur == end) { - parser->state = GRPC_CHTTP2_SPS_VAL1; - return GRPC_CHTTP2_PARSE_OK; - } - parser->value |= ((uint32_t)*cur) << 16; - cur++; - /* fallthrough */ - case GRPC_CHTTP2_SPS_VAL2: - if (cur == end) { - parser->state = GRPC_CHTTP2_SPS_VAL2; - return GRPC_CHTTP2_PARSE_OK; - } - parser->value |= ((uint32_t)*cur) << 8; - cur++; - /* fallthrough */ - case GRPC_CHTTP2_SPS_VAL3: - if (cur == end) { - parser->state = GRPC_CHTTP2_SPS_VAL3; - return GRPC_CHTTP2_PARSE_OK; - } else { - parser->state = GRPC_CHTTP2_SPS_ID0; - } - parser->value |= *cur; - cur++; - - if (parser->id > 0 && parser->id < GRPC_CHTTP2_NUM_SETTINGS) { - const grpc_chttp2_setting_parameters *sp = - &grpc_chttp2_settings_parameters[parser->id]; - if (parser->value < sp->min_value || parser->value > sp->max_value) { - switch (sp->invalid_value_behavior) { - case GRPC_CHTTP2_CLAMP_INVALID_VALUE: - parser->value = - GPR_CLAMP(parser->value, sp->min_value, sp->max_value); - break; - case GRPC_CHTTP2_DISCONNECT_ON_INVALID_VALUE: - grpc_chttp2_goaway_append( - transport_parsing->last_incoming_stream_id, sp->error_value, - gpr_slice_from_static_string("HTTP2 settings error"), - &transport_parsing->qbuf); - gpr_log(GPR_ERROR, "invalid value %u passed for %s", - parser->value, sp->name); - return GRPC_CHTTP2_CONNECTION_ERROR; - } - } - if (parser->id == GRPC_CHTTP2_SETTINGS_INITIAL_WINDOW_SIZE && - parser->incoming_settings[parser->id] != parser->value) { - transport_parsing->initial_window_update = - (int64_t)parser->value - parser->incoming_settings[parser->id]; - if (grpc_http_trace) { - gpr_log(GPR_DEBUG, "adding %d for initial_window change", - (int)transport_parsing->initial_window_update); - } - } - parser->incoming_settings[parser->id] = parser->value; - if (grpc_http_trace) { - gpr_log(GPR_DEBUG, "CHTTP2:%s: got setting %d = %d", - transport_parsing->is_client ? "CLI" : "SVR", parser->id, - parser->value); - } - } else { - gpr_log(GPR_ERROR, "CHTTP2: Ignoring unknown setting %d (value %d)", - parser->id, parser->value); - } - break; - } - } -} |