diff options
Diffstat (limited to 'debian/vendor-h2o/lib/http2/frame.c')
| -rw-r--r-- | debian/vendor-h2o/lib/http2/frame.c | 290 |
1 files changed, 0 insertions, 290 deletions
diff --git a/debian/vendor-h2o/lib/http2/frame.c b/debian/vendor-h2o/lib/http2/frame.c deleted file mode 100644 index 86abdaa..0000000 --- a/debian/vendor-h2o/lib/http2/frame.c +++ /dev/null @@ -1,290 +0,0 @@ -/* - * Copyright (c) 2014 DeNA Co., Ltd. - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ -#include "h2o.h" -#include "h2o/http2.h" -#include "h2o/http2_internal.h" - -const h2o_http2_settings_t H2O_HTTP2_SETTINGS_DEFAULT = { - /* header_table_size */ 4096, - /* enable_push */ 1, - /* max_concurrent_streams */ UINT32_MAX, - /* initial_window_size */ 65535, - /* max_frame_size */ 16384}; - -int h2o_http2_update_peer_settings(h2o_http2_settings_t *settings, const uint8_t *src, size_t len, const char **err_desc) -{ - for (; len >= 6; len -= 6, src += 6) { - uint16_t identifier = h2o_http2_decode16u(src); - uint32_t value = h2o_http2_decode32u(src + 2); - switch (identifier) { -#define SET(label, member, min, max, err_code) \ - case H2O_HTTP2_SETTINGS_##label: \ - if (!(min <= value && value <= max)) { \ - *err_desc = "invalid SETTINGS frame"; \ - return err_code; \ - } \ - settings->member = value; \ - break - SET(HEADER_TABLE_SIZE, header_table_size, 0, UINT32_MAX, 0); - SET(ENABLE_PUSH, enable_push, 0, 1, H2O_HTTP2_ERROR_PROTOCOL); - SET(MAX_CONCURRENT_STREAMS, max_concurrent_streams, 0, UINT32_MAX, 0); - SET(INITIAL_WINDOW_SIZE, initial_window_size, 0, 0x7fffffff, H2O_HTTP2_ERROR_FLOW_CONTROL); - SET(MAX_FRAME_SIZE, max_frame_size, 16384, 16777215, H2O_HTTP2_ERROR_PROTOCOL); -#undef SET - default: - /* ignore unknown (5.5) */ - break; - } - } - - if (len != 0) - return H2O_HTTP2_ERROR_FRAME_SIZE; - return 0; -} - -uint8_t *h2o_http2_encode_frame_header(uint8_t *dst, size_t length, uint8_t type, uint8_t flags, int32_t stream_id) -{ - if (length > 0xffffff) - h2o_fatal("invalid length"); - - dst = h2o_http2_encode24u(dst, (uint32_t)length); - *dst++ = type; - *dst++ = flags; - dst = h2o_http2_encode32u(dst, stream_id); - - return dst; -} - -static uint8_t *allocate_frame(h2o_buffer_t **buf, size_t length, uint8_t type, uint8_t flags, int32_t stream_id) -{ - h2o_iovec_t alloced = h2o_buffer_reserve(buf, H2O_HTTP2_FRAME_HEADER_SIZE + length); - (*buf)->size += H2O_HTTP2_FRAME_HEADER_SIZE + length; - return h2o_http2_encode_frame_header((uint8_t *)alloced.base, length, type, flags, stream_id); -} - -void h2o_http2__encode_rst_stream_frame(h2o_buffer_t **buf, uint32_t stream_id, int errnum) -{ - uint8_t *dst = allocate_frame(buf, 4, H2O_HTTP2_FRAME_TYPE_RST_STREAM, 0, stream_id); - dst = h2o_http2_encode32u(dst, errnum); -} - -void h2o_http2_encode_ping_frame(h2o_buffer_t **buf, int is_ack, const uint8_t *data) -{ - uint8_t *dst = allocate_frame(buf, 8, H2O_HTTP2_FRAME_TYPE_PING, is_ack ? H2O_HTTP2_FRAME_FLAG_ACK : 0, 0); - memcpy(dst, data, 8); - dst += 8; -} - -void h2o_http2_encode_goaway_frame(h2o_buffer_t **buf, uint32_t last_stream_id, int errnum, h2o_iovec_t additional_data) -{ - uint8_t *dst = allocate_frame(buf, 8 + additional_data.len, H2O_HTTP2_FRAME_TYPE_GOAWAY, 0, 0); - dst = h2o_http2_encode32u(dst, last_stream_id); - dst = h2o_http2_encode32u(dst, (uint32_t)-errnum); - h2o_memcpy(dst, additional_data.base, additional_data.len); -} - -void h2o_http2_encode_window_update_frame(h2o_buffer_t **buf, uint32_t stream_id, int32_t window_size_increment) -{ - uint8_t *dst = allocate_frame(buf, 4, H2O_HTTP2_FRAME_TYPE_WINDOW_UPDATE, 0, stream_id); - dst = h2o_http2_encode32u(dst, window_size_increment); -} - -ssize_t h2o_http2_decode_frame(h2o_http2_frame_t *frame, const uint8_t *src, size_t len, const h2o_http2_settings_t *host_settings, - const char **err_desc) -{ - if (len < H2O_HTTP2_FRAME_HEADER_SIZE) - return H2O_HTTP2_ERROR_INCOMPLETE; - - frame->length = h2o_http2_decode24u(src); - frame->type = src[3]; - frame->flags = src[4]; - frame->stream_id = h2o_http2_decode32u(src + 5) & 0x7fffffff; - - if (frame->length > host_settings->max_frame_size) - return H2O_HTTP2_ERROR_FRAME_SIZE; - - if (len < H2O_HTTP2_FRAME_HEADER_SIZE + frame->length) - return H2O_HTTP2_ERROR_INCOMPLETE; - - frame->payload = src + H2O_HTTP2_FRAME_HEADER_SIZE; - - return H2O_HTTP2_FRAME_HEADER_SIZE + frame->length; -} - -int h2o_http2_decode_data_payload(h2o_http2_data_payload_t *payload, const h2o_http2_frame_t *frame, const char **err_desc) -{ - if (frame->stream_id == 0) { - *err_desc = "invalid stream id in DATA frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - - if ((frame->flags & H2O_HTTP2_FRAME_FLAG_PADDED) != 0) { - uint8_t padding_length; - if (frame->length < 1) { - *err_desc = "invalid DATA frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - padding_length = frame->payload[0]; - if (frame->length < 1 + padding_length) { - *err_desc = "invalid DATA frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - payload->data = frame->payload + 1; - payload->length = frame->length - (1 + padding_length); - } else { - payload->data = frame->payload; - payload->length = frame->length; - } - return 0; -} - -static const uint8_t *decode_priority(h2o_http2_priority_t *priority, const uint8_t *src) -{ - uint32_t u4 = h2o_http2_decode32u(src); - src += 4; - priority->exclusive = u4 >> 31; - priority->dependency = u4 & 0x7fffffff; - priority->weight = (uint16_t)*src++ + 1; - return src; -} - -int h2o_http2_decode_headers_payload(h2o_http2_headers_payload_t *payload, const h2o_http2_frame_t *frame, const char **err_desc) -{ - const uint8_t *src = frame->payload, *src_end = frame->payload + frame->length; - - if (frame->stream_id == 0) { - *err_desc = "invalid stream id in HEADERS frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - - if ((frame->flags & H2O_HTTP2_FRAME_FLAG_PADDED) != 0) { - uint32_t padlen; - if (src == src_end) { - *err_desc = "invalid HEADERS frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - padlen = *src++; - if (src_end - src < padlen) { - *err_desc = "invalid HEADERS frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - src_end -= padlen; - } - - if ((frame->flags & H2O_HTTP2_FRAME_FLAG_PRIORITY) != 0) { - if (src_end - src < 5) - return -1; - src = decode_priority(&payload->priority, src); - } else { - payload->priority = h2o_http2_default_priority; - } - - payload->headers = src; - payload->headers_len = src_end - src; - - return 0; -} - -int h2o_http2_decode_priority_payload(h2o_http2_priority_t *payload, const h2o_http2_frame_t *frame, const char **err_desc) -{ - if (frame->stream_id == 0) { - *err_desc = "invalid stream id in PRIORITY frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - if (frame->length != 5) { - *err_desc = "invalid PRIORITY frame"; - return H2O_HTTP2_ERROR_FRAME_SIZE; - } - - decode_priority(payload, frame->payload); - return 0; -} - -int h2o_http2_decode_rst_stream_payload(h2o_http2_rst_stream_payload_t *payload, const h2o_http2_frame_t *frame, - const char **err_desc) -{ - if (frame->stream_id == 0) { - *err_desc = "invalid stream id in RST_STREAM frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - if (frame->length != sizeof(payload->error_code)) { - *err_desc = "invalid RST_STREAM frame"; - return H2O_HTTP2_ERROR_FRAME_SIZE; - } - - payload->error_code = h2o_http2_decode32u(frame->payload); - return 0; -} - -int h2o_http2_decode_ping_payload(h2o_http2_ping_payload_t *payload, const h2o_http2_frame_t *frame, const char **err_desc) -{ - if (frame->stream_id != 0) { - *err_desc = "invalid PING frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - if (frame->length != sizeof(payload->data)) { - *err_desc = "invalid PING frame"; - return H2O_HTTP2_ERROR_FRAME_SIZE; - } - - memcpy(payload->data, frame->payload, sizeof(payload->data)); - return 0; -} - -int h2o_http2_decode_goaway_payload(h2o_http2_goaway_payload_t *payload, const h2o_http2_frame_t *frame, const char **err_desc) -{ - if (frame->stream_id != 0) { - *err_desc = "invalid stream id in GOAWAY frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - if (frame->length < 8) { - *err_desc = "invalid GOAWAY frame"; - return H2O_HTTP2_ERROR_FRAME_SIZE; - } - - payload->last_stream_id = h2o_http2_decode32u(frame->payload) & 0x7fffffff; - payload->error_code = h2o_http2_decode32u(frame->payload + 4); - if ((payload->debug_data.len = frame->length - 8) != 0) - payload->debug_data.base = (char *)frame->payload + 8; - else - payload->debug_data.base = NULL; - - return 0; -} - -int h2o_http2_decode_window_update_payload(h2o_http2_window_update_payload_t *payload, const h2o_http2_frame_t *frame, - const char **err_desc, int *err_is_stream_level) -{ - if (frame->length != 4) { - *err_is_stream_level = 0; - return H2O_HTTP2_ERROR_FRAME_SIZE; - } - - payload->window_size_increment = h2o_http2_decode32u(frame->payload) & 0x7fffffff; - if (payload->window_size_increment == 0) { - *err_is_stream_level = frame->stream_id != 0; - *err_desc = "invalid WINDOW_UPDATE frame"; - return H2O_HTTP2_ERROR_PROTOCOL; - } - - return 0; -} |