717 lines
22 KiB
C
717 lines
22 KiB
C
/*
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* nghttp2 - HTTP/2.0 C Library
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*
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* Copyright (c) 2013 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "nghttp2_frame.h"
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#include <string.h>
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#include <assert.h>
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#include <stdio.h>
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#include <errno.h>
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#include "nghttp2_helper.h"
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#include "nghttp2_net.h"
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int nghttp2_frame_is_data_frame(uint8_t *head)
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{
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return head[2] == 0;
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}
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void nghttp2_frame_pack_frame_hd(uint8_t* buf, const nghttp2_frame_hd *hd)
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{
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nghttp2_put_uint16be(&buf[0], hd->length);
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buf[2]= hd->type;
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buf[3] = hd->flags;
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nghttp2_put_uint32be(&buf[4], hd->stream_id);
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}
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void nghttp2_frame_unpack_frame_hd(nghttp2_frame_hd *hd, const uint8_t* buf)
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{
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hd->length = nghttp2_get_uint16(&buf[0]) & NGHTTP2_FRAME_LENGTH_MASK;
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hd->type = buf[2];
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hd->flags = buf[3];
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hd->stream_id = nghttp2_get_uint32(&buf[4]) & NGHTTP2_STREAM_ID_MASK;
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}
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static void nghttp2_frame_set_hd(nghttp2_frame_hd *hd, uint16_t length,
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uint8_t type, uint8_t flags,
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int32_t stream_id)
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{
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hd->length = length;
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hd->type = type;
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hd->flags = flags;
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hd->stream_id = stream_id;
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}
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void nghttp2_frame_headers_init(nghttp2_headers *frame,
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uint8_t flags, int32_t stream_id, int32_t pri,
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nghttp2_nv *nva, size_t nvlen)
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{
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memset(frame, 0, sizeof(nghttp2_headers));
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nghttp2_frame_set_hd(&frame->hd, 0, NGHTTP2_HEADERS, flags, stream_id);
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frame->pri = pri;
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frame->nva = nva;
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frame->nvlen = nvlen;
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frame->cat = NGHTTP2_HCAT_REQUEST;
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}
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void nghttp2_frame_headers_free(nghttp2_headers *frame)
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{
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nghttp2_nv_array_del(frame->nva);
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}
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void nghttp2_frame_priority_init(nghttp2_priority *frame, int32_t stream_id,
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int32_t pri)
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{
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memset(frame, 0, sizeof(nghttp2_priority));
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nghttp2_frame_set_hd(&frame->hd, 4, NGHTTP2_PRIORITY, NGHTTP2_FLAG_NONE,
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stream_id);
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frame->pri = pri;
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}
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void nghttp2_frame_priority_free(nghttp2_priority *frame)
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{}
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void nghttp2_frame_rst_stream_init(nghttp2_rst_stream *frame,
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int32_t stream_id,
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nghttp2_error_code error_code)
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{
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memset(frame, 0, sizeof(nghttp2_rst_stream));
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nghttp2_frame_set_hd(&frame->hd, 4, NGHTTP2_RST_STREAM, NGHTTP2_FLAG_NONE,
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stream_id);
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frame->error_code = error_code;
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}
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void nghttp2_frame_rst_stream_free(nghttp2_rst_stream *frame)
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{}
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void nghttp2_frame_settings_init(nghttp2_settings *frame, uint8_t flags,
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nghttp2_settings_entry *iv, size_t niv)
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{
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memset(frame, 0, sizeof(nghttp2_settings));
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nghttp2_frame_set_hd(&frame->hd, niv*8, NGHTTP2_SETTINGS, flags, 0);
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frame->niv = niv;
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frame->iv = iv;
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}
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void nghttp2_frame_settings_free(nghttp2_settings *frame)
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{
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free(frame->iv);
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}
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void nghttp2_frame_push_promise_init(nghttp2_push_promise *frame,
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uint8_t flags, int32_t stream_id,
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int32_t promised_stream_id,
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nghttp2_nv *nva, size_t nvlen)
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{
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memset(frame, 0, sizeof(nghttp2_push_promise));
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nghttp2_frame_set_hd(&frame->hd, 0, NGHTTP2_PUSH_PROMISE, flags, stream_id);
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frame->promised_stream_id = promised_stream_id;
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frame->nva = nva;
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frame->nvlen = nvlen;
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}
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void nghttp2_frame_push_promise_free(nghttp2_push_promise *frame)
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{
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nghttp2_nv_array_del(frame->nva);
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}
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void nghttp2_frame_ping_init(nghttp2_ping *frame, uint8_t flags,
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const uint8_t *opaque_data)
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{
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memset(frame, 0, sizeof(nghttp2_ping));
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nghttp2_frame_set_hd(&frame->hd, 8, NGHTTP2_PING, flags, 0);
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if(opaque_data) {
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memcpy(frame->opaque_data, opaque_data, sizeof(frame->opaque_data));
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}
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}
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void nghttp2_frame_ping_free(nghttp2_ping *frame)
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{}
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void nghttp2_frame_goaway_init(nghttp2_goaway *frame, int32_t last_stream_id,
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nghttp2_error_code error_code,
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uint8_t *opaque_data, size_t opaque_data_len)
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{
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memset(frame, 0, sizeof(nghttp2_goaway));
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nghttp2_frame_set_hd(&frame->hd, 8+opaque_data_len, NGHTTP2_GOAWAY,
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NGHTTP2_FLAG_NONE, 0);
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frame->last_stream_id = last_stream_id;
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frame->error_code = error_code;
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frame->opaque_data = opaque_data;
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frame->opaque_data_len = opaque_data_len;
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}
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void nghttp2_frame_goaway_free(nghttp2_goaway *frame)
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{
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free(frame->opaque_data);
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}
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void nghttp2_frame_window_update_init(nghttp2_window_update *frame,
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uint8_t flags,
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int32_t stream_id,
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int32_t window_size_increment)
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{
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memset(frame, 0, sizeof(nghttp2_window_update));
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nghttp2_frame_set_hd(&frame->hd, 4, NGHTTP2_WINDOW_UPDATE, flags, stream_id);
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frame->window_size_increment = window_size_increment;
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}
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void nghttp2_frame_window_update_free(nghttp2_window_update *frame)
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{}
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void nghttp2_frame_data_init(nghttp2_data *frame, uint8_t flags,
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int32_t stream_id,
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const nghttp2_data_provider *data_prd)
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{
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memset(frame, 0, sizeof(nghttp2_data));
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/* At this moment, the length of DATA frame is unknown */
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nghttp2_frame_set_hd(&frame->hd, 0, NGHTTP2_DATA, flags, stream_id);
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frame->data_prd = *data_prd;
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}
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void nghttp2_frame_data_free(nghttp2_data *frame)
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{}
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/*
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* Returns the offset of the name/header block in the HEADERS frame,
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* including frame header length.
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*/
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static size_t headers_nv_offset(nghttp2_headers *frame)
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{
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if(frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
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return NGHTTP2_FRAME_HEAD_LENGTH + 4;
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} else {
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return NGHTTP2_FRAME_HEAD_LENGTH;
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}
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}
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size_t nghttp2_frame_headers_payload_nv_offset(nghttp2_headers *frame)
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{
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if(frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
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return 4;
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} else {
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return 0;
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}
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}
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ssize_t nghttp2_frame_pack_headers(uint8_t **buf_ptr,
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size_t *buflen_ptr,
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nghttp2_headers *frame,
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nghttp2_hd_context *deflater)
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{
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ssize_t framelen;
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size_t nv_offset = headers_nv_offset(frame);
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ssize_t rv;
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rv = nghttp2_hd_deflate_hd(deflater, buf_ptr, buflen_ptr, nv_offset,
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frame->nva, frame->nvlen);
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if(rv < 0) {
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return rv;
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}
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framelen = rv + nv_offset;
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frame->hd.length = framelen - NGHTTP2_FRAME_HEAD_LENGTH;
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/* If frame->nvlen == 0, *buflen_ptr may be smaller than
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nv_offset */
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rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, nv_offset);
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if(rv < 0) {
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return rv;
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}
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memset(*buf_ptr, 0, nv_offset);
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/* pack ctrl header after length is determined */
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nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
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if(frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
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nghttp2_put_uint32be(&(*buf_ptr)[8], frame->pri);
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}
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return framelen;
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}
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int nghttp2_frame_unpack_headers_without_nv(nghttp2_headers *frame,
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const uint8_t *head,
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size_t headlen,
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const uint8_t *payload,
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size_t payloadlen)
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{
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nghttp2_frame_unpack_frame_hd(&frame->hd, head);
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/* TODO Return error if header continuation is used for now */
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if((head[3] & NGHTTP2_FLAG_END_HEADERS) == 0) {
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return NGHTTP2_ERR_PROTO;
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}
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if(head[3] & NGHTTP2_FLAG_PRIORITY) {
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if(payloadlen < 4) {
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return NGHTTP2_ERR_FRAME_SIZE_ERROR;
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}
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frame->pri = nghttp2_get_uint32(payload) & NGHTTP2_PRIORITY_MASK;
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} else {
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frame->pri = NGHTTP2_PRI_DEFAULT;
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}
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frame->nva = NULL;
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frame->nvlen = 0;
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return 0;
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}
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ssize_t nghttp2_frame_pack_priority(uint8_t **buf_ptr, size_t *buflen_ptr,
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nghttp2_priority *frame)
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{
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ssize_t framelen= NGHTTP2_FRAME_HEAD_LENGTH + 4;
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int r;
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r = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
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if(r != 0) {
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return r;
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}
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memset(*buf_ptr, 0, framelen);
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nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
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nghttp2_put_uint32be(&(*buf_ptr)[8], frame->pri);
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return framelen;
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}
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int nghttp2_frame_unpack_priority(nghttp2_priority *frame,
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const uint8_t *head, size_t headlen,
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const uint8_t *payload, size_t payloadlen)
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{
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if(payloadlen != 4) {
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return NGHTTP2_ERR_FRAME_SIZE_ERROR;
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}
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nghttp2_frame_unpack_frame_hd(&frame->hd, head);
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frame->pri = nghttp2_get_uint32(payload) & NGHTTP2_PRIORITY_MASK;
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return 0;
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}
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ssize_t nghttp2_frame_pack_rst_stream(uint8_t **buf_ptr, size_t *buflen_ptr,
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nghttp2_rst_stream *frame)
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{
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ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + 4;
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int r;
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r = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
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if(r != 0) {
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return r;
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}
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memset(*buf_ptr, 0, framelen);
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nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
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nghttp2_put_uint32be(&(*buf_ptr)[8], frame->error_code);
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return framelen;
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}
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int nghttp2_frame_unpack_rst_stream(nghttp2_rst_stream *frame,
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const uint8_t *head, size_t headlen,
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const uint8_t *payload, size_t payloadlen)
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{
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if(payloadlen != 4) {
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return NGHTTP2_ERR_FRAME_SIZE_ERROR;
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}
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nghttp2_frame_unpack_frame_hd(&frame->hd, head);
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frame->error_code = nghttp2_get_uint32(payload);
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return 0;
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}
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ssize_t nghttp2_frame_pack_settings(uint8_t **buf_ptr, size_t *buflen_ptr,
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nghttp2_settings *frame)
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{
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ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + frame->hd.length;
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int r;
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r = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
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if(r != 0) {
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return r;
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}
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memset(*buf_ptr, 0, framelen);
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nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
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nghttp2_frame_pack_settings_payload(*buf_ptr + 8, frame->iv, frame->niv);
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return framelen;
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}
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size_t nghttp2_frame_pack_settings_payload(uint8_t *buf,
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const nghttp2_settings_entry *iv,
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size_t niv)
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{
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size_t i;
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for(i = 0; i < niv; ++i, buf += 8) {
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nghttp2_put_uint32be(buf, iv[i].settings_id);
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nghttp2_put_uint32be(buf + 4, iv[i].value);
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}
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return 8 * niv;
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}
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int nghttp2_frame_unpack_settings(nghttp2_settings *frame,
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const uint8_t *head, size_t headlen,
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const uint8_t *payload, size_t payloadlen)
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{
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int rv;
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nghttp2_frame_unpack_frame_hd(&frame->hd, head);
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if((payloadlen & 0x7) ||
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((frame->hd.flags & NGHTTP2_FLAG_ACK) && payloadlen > 0)) {
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return NGHTTP2_ERR_FRAME_SIZE_ERROR;
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}
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rv = nghttp2_frame_unpack_settings_payload(&frame->iv, &frame->niv,
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payload, payloadlen);
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if(rv != 0) {
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return rv;
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}
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return 0;
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}
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int nghttp2_frame_unpack_settings_payload(nghttp2_settings_entry **iv_ptr,
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size_t *niv_ptr,
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const uint8_t *payload,
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size_t payloadlen)
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{
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size_t i;
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*niv_ptr = payloadlen / 8;
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*iv_ptr = malloc((*niv_ptr)*sizeof(nghttp2_settings_entry));
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if(*iv_ptr == NULL) {
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return NGHTTP2_ERR_NOMEM;
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}
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for(i = 0; i < *niv_ptr; ++i) {
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size_t off = i*8;
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(*iv_ptr)[i].settings_id = nghttp2_get_uint32(&payload[off]) &
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NGHTTP2_SETTINGS_ID_MASK;
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(*iv_ptr)[i].value = nghttp2_get_uint32(&payload[4+off]);
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}
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return 0;
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}
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ssize_t nghttp2_frame_pack_push_promise(uint8_t **buf_ptr,
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size_t *buflen_ptr,
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nghttp2_push_promise *frame,
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nghttp2_hd_context *deflater)
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{
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ssize_t framelen;
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size_t nv_offset = NGHTTP2_FRAME_HEAD_LENGTH + 4;
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ssize_t rv;
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rv = nghttp2_hd_deflate_hd(deflater, buf_ptr, buflen_ptr, nv_offset,
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frame->nva, frame->nvlen);
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if(rv < 0) {
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return rv;
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}
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framelen = rv + nv_offset;
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frame->hd.length = framelen - NGHTTP2_FRAME_HEAD_LENGTH;
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/* If frame->nvlen == 0, *buflen_ptr may be smaller than
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nv_offset */
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rv = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, nv_offset);
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if(rv < 0) {
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return rv;
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}
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memset(*buf_ptr, 0, nv_offset);
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/* pack ctrl header after length is determined */
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nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
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nghttp2_put_uint32be(&(*buf_ptr)[8], frame->promised_stream_id);
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return framelen;
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}
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int nghttp2_frame_unpack_push_promise_without_nv(nghttp2_push_promise *frame,
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const uint8_t *head,
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size_t headlen,
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const uint8_t *payload,
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size_t payloadlen)
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{
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nghttp2_frame_unpack_frame_hd(&frame->hd, head);
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/* TODO Return error if header continuation is used for now */
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if((head[3] & NGHTTP2_FLAG_END_PUSH_PROMISE) == 0) {
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return NGHTTP2_ERR_PROTO;
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}
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if(payloadlen < 4) {
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return NGHTTP2_ERR_FRAME_SIZE_ERROR;
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}
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frame->promised_stream_id = nghttp2_get_uint32(payload) &
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NGHTTP2_STREAM_ID_MASK;
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frame->nva = NULL;
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frame->nvlen = 0;
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return 0;
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}
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ssize_t nghttp2_frame_pack_ping(uint8_t **buf_ptr, size_t *buflen_ptr,
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nghttp2_ping *frame)
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{
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ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + 8;
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int r;
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r = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
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if(r != 0) {
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return r;
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}
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memset(*buf_ptr, 0, framelen);
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nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
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memcpy(&(*buf_ptr)[8], frame->opaque_data, sizeof(frame->opaque_data));
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return framelen;
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}
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int nghttp2_frame_unpack_ping(nghttp2_ping *frame,
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const uint8_t *head, size_t headlen,
|
|
const uint8_t *payload, size_t payloadlen)
|
|
{
|
|
if(payloadlen != 8) {
|
|
return NGHTTP2_ERR_FRAME_SIZE_ERROR;
|
|
}
|
|
nghttp2_frame_unpack_frame_hd(&frame->hd, head);
|
|
memcpy(frame->opaque_data, payload, sizeof(frame->opaque_data));
|
|
return 0;
|
|
}
|
|
|
|
|
|
ssize_t nghttp2_frame_pack_goaway(uint8_t **buf_ptr, size_t *buflen_ptr,
|
|
nghttp2_goaway *frame)
|
|
{
|
|
ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + frame->hd.length;
|
|
int r;
|
|
r = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
|
|
if(r != 0) {
|
|
return r;
|
|
}
|
|
memset(*buf_ptr, 0, framelen);
|
|
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
|
|
nghttp2_put_uint32be(&(*buf_ptr)[8], frame->last_stream_id);
|
|
nghttp2_put_uint32be(&(*buf_ptr)[12], frame->error_code);
|
|
memcpy(&(*buf_ptr)[16], frame->opaque_data, frame->opaque_data_len);
|
|
return framelen;
|
|
}
|
|
|
|
int nghttp2_frame_unpack_goaway(nghttp2_goaway *frame,
|
|
const uint8_t *head, size_t headlen,
|
|
const uint8_t *payload, size_t payloadlen)
|
|
{
|
|
nghttp2_frame_unpack_frame_hd(&frame->hd, head);
|
|
if(payloadlen < 8) {
|
|
return NGHTTP2_ERR_FRAME_SIZE_ERROR;
|
|
}
|
|
frame->last_stream_id = nghttp2_get_uint32(payload) & NGHTTP2_STREAM_ID_MASK;
|
|
frame->error_code = nghttp2_get_uint32(payload+4);
|
|
frame->opaque_data_len = payloadlen - 8;
|
|
if(frame->opaque_data_len == 0) {
|
|
frame->opaque_data = NULL;
|
|
} else {
|
|
frame->opaque_data = malloc(frame->opaque_data_len);
|
|
if(frame->opaque_data == NULL) {
|
|
return NGHTTP2_ERR_NOMEM;
|
|
}
|
|
memcpy(frame->opaque_data, &payload[8], frame->opaque_data_len);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
ssize_t nghttp2_frame_pack_window_update(uint8_t **buf_ptr, size_t *buflen_ptr,
|
|
nghttp2_window_update *frame)
|
|
{
|
|
ssize_t framelen = NGHTTP2_FRAME_HEAD_LENGTH + 4;
|
|
int r;
|
|
r = nghttp2_reserve_buffer(buf_ptr, buflen_ptr, framelen);
|
|
if(r != 0) {
|
|
return r;
|
|
}
|
|
memset(*buf_ptr, 0, framelen);
|
|
nghttp2_frame_pack_frame_hd(*buf_ptr, &frame->hd);
|
|
nghttp2_put_uint32be(&(*buf_ptr)[8], frame->window_size_increment);
|
|
return framelen;
|
|
}
|
|
|
|
int nghttp2_frame_unpack_window_update(nghttp2_window_update *frame,
|
|
const uint8_t *head, size_t headlen,
|
|
const uint8_t *payload,
|
|
size_t payloadlen)
|
|
{
|
|
if(payloadlen != 4) {
|
|
return NGHTTP2_ERR_FRAME_SIZE_ERROR;
|
|
}
|
|
nghttp2_frame_unpack_frame_hd(&frame->hd, head);
|
|
frame->window_size_increment = nghttp2_get_uint32(payload) &
|
|
NGHTTP2_WINDOW_SIZE_INCREMENT_MASK;
|
|
return 0;
|
|
}
|
|
|
|
nghttp2_settings_entry* nghttp2_frame_iv_copy(const nghttp2_settings_entry *iv,
|
|
size_t niv)
|
|
{
|
|
nghttp2_settings_entry *iv_copy;
|
|
size_t len = niv*sizeof(nghttp2_settings_entry);
|
|
iv_copy = malloc(len);
|
|
if(iv_copy == NULL) {
|
|
return NULL;
|
|
}
|
|
memcpy(iv_copy, iv, len);
|
|
return iv_copy;
|
|
}
|
|
|
|
int nghttp2_nv_array_check_nocase(const nghttp2_nv *nva, size_t nvlen)
|
|
{
|
|
size_t i;
|
|
for(i = 0; i < nvlen; ++i) {
|
|
if(!nghttp2_check_header_name_nocase(nva[i].name, nva[i].namelen)) {
|
|
return 0;
|
|
}
|
|
if(!nghttp2_check_header_value(nva[i].value, nva[i].valuelen)) {
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int nghttp2_nv_array_check(const nghttp2_nv *nva, size_t nvlen)
|
|
{
|
|
size_t i;
|
|
for(i = 0; i < nvlen; ++i) {
|
|
if(!nghttp2_check_header_name(nva[i].name, nva[i].namelen)) {
|
|
return 0;
|
|
}
|
|
if(!nghttp2_check_header_value(nva[i].value, nva[i].valuelen)) {
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int nghttp2_nv_check(const uint8_t *name, size_t namelen,
|
|
const uint8_t *value, size_t valuelen)
|
|
{
|
|
if(!nghttp2_check_header_name(name, namelen)) {
|
|
return 0;
|
|
}
|
|
if(!nghttp2_check_header_value(value, valuelen)) {
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int nghttp2_nv_equal(const nghttp2_nv *a, const nghttp2_nv *b)
|
|
{
|
|
return a->namelen == b->namelen && a->valuelen == b->valuelen &&
|
|
memcmp(a->name, b->name, a->namelen) == 0 &&
|
|
memcmp(a->value, b->value, a->valuelen) == 0;
|
|
}
|
|
|
|
void nghttp2_nv_array_del(nghttp2_nv *nva)
|
|
{
|
|
free(nva);
|
|
}
|
|
|
|
static int bytes_compar(const uint8_t *a, size_t alen,
|
|
const uint8_t *b, size_t blen)
|
|
{
|
|
if(alen == blen) {
|
|
return memcmp(a, b, alen);
|
|
} else if(alen < blen) {
|
|
int rv = memcmp(a, b, alen);
|
|
if(rv == 0) {
|
|
return -1;
|
|
} else {
|
|
return rv;
|
|
}
|
|
} else {
|
|
int rv = memcmp(a, b, blen);
|
|
if(rv == 0) {
|
|
return 1;
|
|
} else {
|
|
return rv;
|
|
}
|
|
}
|
|
}
|
|
|
|
int nghttp2_nv_compare_name(const nghttp2_nv *lhs, const nghttp2_nv *rhs)
|
|
{
|
|
return bytes_compar(lhs->name, lhs->namelen, rhs->name, rhs->namelen);
|
|
}
|
|
|
|
static int nv_compar(const void *lhs, const void *rhs)
|
|
{
|
|
const nghttp2_nv *a = (const nghttp2_nv*)lhs;
|
|
const nghttp2_nv *b = (const nghttp2_nv*)rhs;
|
|
int rv;
|
|
rv = bytes_compar(a->name, a->namelen, b->name, b->namelen);
|
|
if(rv == 0) {
|
|
return bytes_compar(a->value, a->valuelen, b->value, b->valuelen);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
void nghttp2_nv_array_sort(nghttp2_nv *nva, size_t nvlen)
|
|
{
|
|
qsort(nva, nvlen, sizeof(nghttp2_nv), nv_compar);
|
|
}
|
|
|
|
ssize_t nghttp2_nv_array_copy(nghttp2_nv **nva_ptr,
|
|
const nghttp2_nv *nva, size_t nvlen)
|
|
{
|
|
size_t i;
|
|
uint8_t *data;
|
|
size_t buflen = 0;
|
|
nghttp2_nv *p;
|
|
for(i = 0; i < nvlen; ++i) {
|
|
if(nva[i].namelen > NGHTTP2_MAX_HD_VALUE_LENGTH ||
|
|
nva[i].valuelen > NGHTTP2_MAX_HD_VALUE_LENGTH) {
|
|
return NGHTTP2_ERR_INVALID_ARGUMENT;
|
|
}
|
|
buflen += nva[i].namelen + nva[i].valuelen;
|
|
}
|
|
/* If all name/value pair is 0-length, remove them */
|
|
if(nvlen == 0 || buflen == 0) {
|
|
*nva_ptr = NULL;
|
|
return 0;
|
|
}
|
|
buflen += sizeof(nghttp2_nv)*nvlen;
|
|
*nva_ptr = malloc(buflen);
|
|
if(*nva_ptr == NULL) {
|
|
return NGHTTP2_ERR_NOMEM;
|
|
}
|
|
p = *nva_ptr;
|
|
data = (uint8_t*)(*nva_ptr) + sizeof(nghttp2_nv)*nvlen;
|
|
|
|
for(i = 0; i < nvlen; ++i) {
|
|
memcpy(data, nva[i].name, nva[i].namelen);
|
|
p->name = data;
|
|
p->namelen = nva[i].namelen;
|
|
nghttp2_downcase(p->name, p->namelen);
|
|
data += nva[i].namelen;
|
|
memcpy(data, nva[i].value, nva[i].valuelen);
|
|
p->value = data;
|
|
p->valuelen = nva[i].valuelen;
|
|
data += nva[i].valuelen;
|
|
++p;
|
|
}
|
|
return nvlen;
|
|
}
|
|
|
|
int nghttp2_iv_check(const nghttp2_settings_entry *iv, size_t niv,
|
|
int32_t flow_control_opt)
|
|
{
|
|
size_t i;
|
|
for(i = 0; i < niv; ++i) {
|
|
switch(iv[i].settings_id) {
|
|
case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE:
|
|
if(iv[i].value > (uint32_t)NGHTTP2_MAX_WINDOW_SIZE) {
|
|
return 0;
|
|
}
|
|
break;
|
|
case NGHTTP2_SETTINGS_FLOW_CONTROL_OPTIONS:
|
|
if(flow_control_opt) {
|
|
if((iv[i].value & 0x1) == 0) {
|
|
/* Attempt to re-enabling flow-control is error */
|
|
return 0;
|
|
}
|
|
} else {
|
|
flow_control_opt = iv[i].value & 0x1;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|