mirror of
https://github.com/moparisthebest/spdylay
synced 2024-12-22 23:58:53 -05:00
b95e9a8c4c
Current SPDY/3 spec does not clearly prohibit to send delta_window_size which makes resulting window size more than initial window size. For this reason, spdylay_submit_window_update() can send delta_window_size in [1, (1 << 31)-1], inclusive, without bounded by stream's recv_window_size. Of course, the application is now responsible to keep the resulting window size <= (1 << 31)-1. spdylay_submit_window_update() now returns SPDYLAY_ERR_INVALID_ARGUMENT if delta_window_size is 0 or negative.
328 lines
9.9 KiB
C
328 lines
9.9 KiB
C
/*
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* Spdylay - SPDY Library
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*
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* Copyright (c) 2012 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 "spdylay_submit.h"
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#include <string.h>
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#include "spdylay_session.h"
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#include "spdylay_frame.h"
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#include "spdylay_helper.h"
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static int spdylay_submit_syn_stream_shared
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(spdylay_session *session,
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uint8_t flags,
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int32_t assoc_stream_id,
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uint8_t pri,
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const char **nv,
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const spdylay_data_provider *data_prd,
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void *stream_user_data)
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{
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int r;
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spdylay_frame *frame;
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char **nv_copy;
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uint8_t flags_copy;
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spdylay_data_provider *data_prd_copy = NULL;
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spdylay_syn_stream_aux_data *aux_data;
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if(pri > spdylay_session_get_pri_lowest(session)) {
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return SPDYLAY_ERR_INVALID_ARGUMENT;
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}
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if(assoc_stream_id != 0) {
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if(session->server == 0) {
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assoc_stream_id = 0;
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} else if(spdylay_session_is_my_stream_id(session, assoc_stream_id)) {
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return SPDYLAY_ERR_INVALID_ARGUMENT;
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}
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}
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if(data_prd != NULL && data_prd->read_callback != NULL) {
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data_prd_copy = malloc(sizeof(spdylay_data_provider));
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if(data_prd_copy == NULL) {
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return SPDYLAY_ERR_NOMEM;
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}
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*data_prd_copy = *data_prd;
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}
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aux_data = malloc(sizeof(spdylay_syn_stream_aux_data));
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if(aux_data == NULL) {
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free(data_prd_copy);
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return SPDYLAY_ERR_NOMEM;
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}
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aux_data->data_prd = data_prd_copy;
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aux_data->stream_user_data = stream_user_data;
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frame = malloc(sizeof(spdylay_frame));
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if(frame == NULL) {
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free(aux_data);
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free(data_prd_copy);
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return SPDYLAY_ERR_NOMEM;
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}
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nv_copy = spdylay_frame_nv_norm_copy(nv);
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if(nv_copy == NULL) {
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free(frame);
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free(aux_data);
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free(data_prd_copy);
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return SPDYLAY_ERR_NOMEM;
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}
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flags_copy = 0;
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if(flags & SPDYLAY_CTRL_FLAG_FIN) {
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flags_copy |= SPDYLAY_CTRL_FLAG_FIN;
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}
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if(flags & SPDYLAY_CTRL_FLAG_UNIDIRECTIONAL) {
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flags_copy |= SPDYLAY_CTRL_FLAG_UNIDIRECTIONAL;
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}
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spdylay_frame_syn_stream_init(&frame->syn_stream,
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session->version, flags_copy,
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0, assoc_stream_id, pri, nv_copy);
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r = spdylay_session_add_frame(session, SPDYLAY_CTRL, frame,
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aux_data);
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if(r != 0) {
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spdylay_frame_syn_stream_free(&frame->syn_stream);
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free(frame);
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free(aux_data);
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free(data_prd_copy);
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}
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return r;
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}
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int spdylay_submit_syn_stream(spdylay_session *session, uint8_t flags,
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int32_t assoc_stream_id, uint8_t pri,
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const char **nv, void *stream_user_data)
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{
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return spdylay_submit_syn_stream_shared(session, flags, assoc_stream_id,
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pri, nv, NULL, stream_user_data);
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}
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int spdylay_submit_syn_reply(spdylay_session *session, uint8_t flags,
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int32_t stream_id, const char **nv)
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{
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int r;
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spdylay_frame *frame;
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char **nv_copy;
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uint8_t flags_copy;
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frame = malloc(sizeof(spdylay_frame));
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if(frame == NULL) {
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return SPDYLAY_ERR_NOMEM;
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}
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nv_copy = spdylay_frame_nv_norm_copy(nv);
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if(nv_copy == NULL) {
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free(frame);
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return SPDYLAY_ERR_NOMEM;
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}
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flags_copy = 0;
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if(flags & SPDYLAY_CTRL_FLAG_FIN) {
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flags_copy |= SPDYLAY_CTRL_FLAG_FIN;
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}
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spdylay_frame_syn_reply_init(&frame->syn_reply, session->version, flags_copy,
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stream_id, nv_copy);
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r = spdylay_session_add_frame(session, SPDYLAY_CTRL, frame, NULL);
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if(r != 0) {
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spdylay_frame_syn_reply_free(&frame->syn_reply);
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free(frame);
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}
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return r;
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}
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int spdylay_submit_headers(spdylay_session *session, uint8_t flags,
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int32_t stream_id, const char **nv)
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{
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int r;
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spdylay_frame *frame;
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char **nv_copy;
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uint8_t flags_copy;
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frame = malloc(sizeof(spdylay_frame));
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if(frame == NULL) {
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return SPDYLAY_ERR_NOMEM;
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}
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nv_copy = spdylay_frame_nv_norm_copy(nv);
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if(nv_copy == NULL) {
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free(frame);
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return SPDYLAY_ERR_NOMEM;
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}
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flags_copy = 0;
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if(flags & SPDYLAY_CTRL_FLAG_FIN) {
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flags_copy |= SPDYLAY_CTRL_FLAG_FIN;
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}
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spdylay_frame_headers_init(&frame->headers, session->version, flags_copy,
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stream_id, nv_copy);
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r = spdylay_session_add_frame(session, SPDYLAY_CTRL, frame, NULL);
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if(r != 0) {
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spdylay_frame_headers_free(&frame->headers);
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free(frame);
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}
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return r;
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}
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int spdylay_submit_ping(spdylay_session *session)
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{
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return spdylay_session_add_ping(session,
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spdylay_session_get_next_unique_id(session));
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}
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int spdylay_submit_rst_stream(spdylay_session *session, int32_t stream_id,
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uint32_t status_code)
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{
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return spdylay_session_add_rst_stream(session, stream_id, status_code);
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}
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int spdylay_submit_goaway(spdylay_session *session, uint32_t status_code)
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{
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return spdylay_session_add_goaway(session, session->last_recv_stream_id,
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status_code);
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}
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int spdylay_submit_settings(spdylay_session *session, uint8_t flags,
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const spdylay_settings_entry *iv, size_t niv)
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{
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spdylay_frame *frame;
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spdylay_settings_entry *iv_copy;
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int check[SPDYLAY_SETTINGS_MAX+1];
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size_t i;
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int r;
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memset(check, 0, sizeof(check));
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for(i = 0; i < niv; ++i) {
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if(iv[i].settings_id > SPDYLAY_SETTINGS_MAX || iv[i].settings_id == 0 ||
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check[iv[i].settings_id] == 1) {
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return SPDYLAY_ERR_INVALID_ARGUMENT;
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} else {
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check[iv[i].settings_id] = 1;
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}
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}
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frame = malloc(sizeof(spdylay_frame));
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if(frame == NULL) {
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return SPDYLAY_ERR_NOMEM;
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}
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iv_copy = spdylay_frame_iv_copy(iv, niv);
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if(iv_copy == NULL) {
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free(frame);
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return SPDYLAY_ERR_NOMEM;
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}
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spdylay_frame_iv_sort(iv_copy, niv);
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spdylay_frame_settings_init(&frame->settings, session->version,
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flags, iv_copy, niv);
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r = spdylay_session_add_frame(session, SPDYLAY_CTRL, frame, NULL);
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if(r == 0) {
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spdylay_session_update_local_settings(session, iv_copy, niv);
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} else {
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spdylay_frame_settings_free(&frame->settings);
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free(frame);
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}
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return r;
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}
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int spdylay_submit_window_update(spdylay_session *session, int32_t stream_id,
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int32_t delta_window_size)
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{
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spdylay_stream *stream;
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if(delta_window_size <= 0) {
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return SPDYLAY_ERR_INVALID_ARGUMENT;
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}
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stream = spdylay_session_get_stream(session, stream_id);
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if(stream) {
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stream->recv_window_size -= spdylay_min(delta_window_size,
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stream->recv_window_size);
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return spdylay_session_add_window_update(session, stream_id,
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delta_window_size);
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} else {
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return SPDYLAY_ERR_STREAM_CLOSED;
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}
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}
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int spdylay_submit_request(spdylay_session *session, uint8_t pri,
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const char **nv,
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const spdylay_data_provider *data_prd,
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void *stream_user_data)
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{
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int flags;
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flags = 0;
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if(data_prd == NULL || data_prd->read_callback == NULL) {
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flags |= SPDYLAY_CTRL_FLAG_FIN;
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}
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return spdylay_submit_syn_stream_shared(session, flags, 0, pri, nv, data_prd,
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stream_user_data);
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}
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int spdylay_submit_response(spdylay_session *session,
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int32_t stream_id, const char **nv,
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const spdylay_data_provider *data_prd)
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{
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int r;
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spdylay_frame *frame;
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char **nv_copy;
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uint8_t flags = 0;
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spdylay_data_provider *data_prd_copy = NULL;
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if(data_prd != NULL && data_prd->read_callback != NULL) {
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data_prd_copy = malloc(sizeof(spdylay_data_provider));
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if(data_prd_copy == NULL) {
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return SPDYLAY_ERR_NOMEM;
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}
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*data_prd_copy = *data_prd;
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}
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frame = malloc(sizeof(spdylay_frame));
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if(frame == NULL) {
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free(data_prd_copy);
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return SPDYLAY_ERR_NOMEM;
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}
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nv_copy = spdylay_frame_nv_norm_copy(nv);
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if(nv_copy == NULL) {
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free(frame);
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free(data_prd_copy);
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return SPDYLAY_ERR_NOMEM;
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}
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if(data_prd_copy == NULL) {
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flags |= SPDYLAY_CTRL_FLAG_FIN;
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}
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spdylay_frame_syn_reply_init(&frame->syn_reply, session->version, flags,
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stream_id, nv_copy);
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r = spdylay_session_add_frame(session, SPDYLAY_CTRL, frame,
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data_prd_copy);
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if(r != 0) {
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spdylay_frame_syn_reply_free(&frame->syn_reply);
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free(frame);
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free(data_prd_copy);
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}
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return r;
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}
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int spdylay_submit_data(spdylay_session *session, int32_t stream_id,
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uint8_t flags,
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const spdylay_data_provider *data_prd)
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{
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int r;
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spdylay_data *data_frame;
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uint8_t nflags = 0;
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data_frame = malloc(sizeof(spdylay_frame));
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if(data_frame == NULL) {
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return SPDYLAY_ERR_NOMEM;
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}
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if(flags & SPDYLAY_DATA_FLAG_FIN) {
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nflags |= SPDYLAY_DATA_FLAG_FIN;
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}
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spdylay_frame_data_init(data_frame, stream_id, nflags, data_prd);
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r = spdylay_session_add_frame(session, SPDYLAY_DATA, data_frame, NULL);
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if(r != 0) {
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spdylay_frame_data_free(data_frame);
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free(data_frame);
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}
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return r;
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}
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