360 lines
11 KiB
C
360 lines
11 KiB
C
/*
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* nghttp2 - HTTP/2.0 C 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 "nghttp2_submit.h"
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#include <string.h>
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#include <assert.h>
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#include "nghttp2_session.h"
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#include "nghttp2_frame.h"
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#include "nghttp2_helper.h"
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static int nghttp2_submit_headers_shared
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(nghttp2_session *session,
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uint8_t flags,
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int32_t stream_id,
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int32_t pri,
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const char **nv,
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const nghttp2_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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nghttp2_frame *frame;
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nghttp2_nv *nva_copy;
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ssize_t nvlen;
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uint8_t flags_copy;
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nghttp2_data_provider *data_prd_copy = NULL;
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nghttp2_headers_aux_data *aux_data = NULL;
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if(pri < 0) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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}
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if(!nghttp2_frame_nv_check_null(nv)) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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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(nghttp2_data_provider));
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if(data_prd_copy == NULL) {
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return NGHTTP2_ERR_NOMEM;
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}
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*data_prd_copy = *data_prd;
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}
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if(data_prd || stream_user_data) {
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aux_data = malloc(sizeof(nghttp2_headers_aux_data));
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if(aux_data == NULL) {
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free(data_prd_copy);
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return NGHTTP2_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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}
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frame = malloc(sizeof(nghttp2_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 NGHTTP2_ERR_NOMEM;
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}
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nvlen = nghttp2_nv_array_from_cstr(&nva_copy, nv);
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if(nvlen < 0) {
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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 nvlen;
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}
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/* TODO Implement header continuation */
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flags_copy = (flags & (NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_PRIORITY)) |
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NGHTTP2_FLAG_END_HEADERS;
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nghttp2_frame_headers_init(&frame->headers, flags_copy, stream_id, pri,
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nva_copy, nvlen);
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r = nghttp2_session_add_frame(session, NGHTTP2_CAT_CTRL, frame,
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aux_data);
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if(r != 0) {
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nghttp2_frame_headers_free(&frame->headers);
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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 nghttp2_submit_headers(nghttp2_session *session, uint8_t flags,
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int32_t stream_id, int32_t pri,
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const char **nv, void *stream_user_data)
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{
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return nghttp2_submit_headers_shared(session, flags, stream_id,
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pri, nv, NULL, stream_user_data);
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}
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int nghttp2_submit_ping(nghttp2_session *session, uint8_t *opaque_data)
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{
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return nghttp2_session_add_ping(session, NGHTTP2_FLAG_NONE, opaque_data);
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}
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int nghttp2_submit_priority(nghttp2_session *session, int32_t stream_id,
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int32_t pri)
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{
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int r;
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nghttp2_frame *frame;
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nghttp2_stream *stream;
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if(pri < 0) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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}
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stream = nghttp2_session_get_stream(session, stream_id);
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if(stream == NULL) {
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return NGHTTP2_ERR_STREAM_CLOSED;
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}
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frame = malloc(sizeof(nghttp2_frame));
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if(frame == NULL) {
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return NGHTTP2_ERR_NOMEM;
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}
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nghttp2_frame_priority_init(&frame->priority, stream_id, pri);
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r = nghttp2_session_add_frame(session, NGHTTP2_CAT_CTRL, frame, NULL);
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if(r != 0) {
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nghttp2_frame_priority_free(&frame->priority);
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free(frame);
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return r;
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}
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/* Only update priority if the sender is client for now */
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if(!session->server) {
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nghttp2_session_reprioritize_stream(session, stream, pri);
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}
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return 0;
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}
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int nghttp2_submit_rst_stream(nghttp2_session *session, int32_t stream_id,
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nghttp2_error_code error_code)
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{
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return nghttp2_session_add_rst_stream(session, stream_id, error_code);
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}
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int nghttp2_submit_goaway(nghttp2_session *session,
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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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return nghttp2_session_add_goaway(session, session->last_recv_stream_id,
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error_code, opaque_data, opaque_data_len);
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}
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int nghttp2_submit_settings(nghttp2_session *session,
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const nghttp2_settings_entry *iv, size_t niv)
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{
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nghttp2_frame *frame;
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nghttp2_settings_entry *iv_copy;
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int r;
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if(!nghttp2_iv_check(iv, niv,
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session->local_settings
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[NGHTTP2_SETTINGS_FLOW_CONTROL_OPTIONS])) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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}
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frame = malloc(sizeof(nghttp2_frame));
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if(frame == NULL) {
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return NGHTTP2_ERR_NOMEM;
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}
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iv_copy = nghttp2_frame_iv_copy(iv, niv);
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if(iv_copy == NULL) {
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free(frame);
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return NGHTTP2_ERR_NOMEM;
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}
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nghttp2_frame_settings_init(&frame->settings, iv_copy, niv);
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r = nghttp2_session_update_local_settings(session, iv_copy, niv);
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if(r != 0) {
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nghttp2_frame_settings_free(&frame->settings);
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free(frame);
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return r;
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}
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r = nghttp2_session_add_frame(session, NGHTTP2_CAT_CTRL, frame, NULL);
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if(r != 0) {
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/* The only expected error is fatal one */
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assert(r < NGHTTP2_ERR_FATAL);
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nghttp2_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 nghttp2_submit_push_promise(nghttp2_session *session, uint8_t flags,
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int32_t stream_id, const char **nv)
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{
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nghttp2_frame *frame;
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nghttp2_nv *nva;
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ssize_t nvlen;
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uint8_t flags_copy;
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int r;
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if(nghttp2_session_get_stream(session, stream_id) == NULL) {
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return NGHTTP2_ERR_STREAM_CLOSED;
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}
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if(!nghttp2_frame_nv_check_null(nv)) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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}
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frame = malloc(sizeof(nghttp2_frame));
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if(frame == NULL) {
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return NGHTTP2_ERR_NOMEM;
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}
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nvlen = nghttp2_nv_array_from_cstr(&nva, nv);
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if(nvlen < 0) {
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free(frame);
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return nvlen;
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}
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/* TODO Implement header continuation */
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flags_copy = NGHTTP2_FLAG_END_PUSH_PROMISE;
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nghttp2_frame_push_promise_init(&frame->push_promise, flags_copy,
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stream_id, -1, nva, nvlen);
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r = nghttp2_session_add_frame(session, NGHTTP2_CAT_CTRL, frame, NULL);
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if(r != 0) {
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nghttp2_frame_push_promise_free(&frame->push_promise);
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free(frame);
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}
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return 0;
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}
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int nghttp2_submit_window_update(nghttp2_session *session, 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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int rv;
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nghttp2_stream *stream;
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if(window_size_increment == 0) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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}
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flags = 0;
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if(stream_id == 0) {
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if(!session->local_flow_control) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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}
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rv = nghttp2_adjust_local_window_size(&session->local_window_size,
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&session->recv_window_size,
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window_size_increment);
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if(rv != 0) {
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return rv;
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}
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if(!(session->opt_flags &
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NGHTTP2_OPTMASK_NO_AUTO_CONNECTION_WINDOW_UPDATE) &&
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window_size_increment < 0 &&
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nghttp2_should_send_window_update(session->local_window_size,
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session->recv_window_size)) {
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window_size_increment = session->recv_window_size;
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session->recv_window_size = 0;
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}
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} else {
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stream = nghttp2_session_get_stream(session, stream_id);
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if(stream) {
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if(!stream->local_flow_control) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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}
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rv = nghttp2_adjust_local_window_size(&stream->local_window_size,
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&stream->recv_window_size,
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window_size_increment);
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if(rv != 0) {
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return rv;
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}
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if(!(session->opt_flags &
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NGHTTP2_OPTMASK_NO_AUTO_STREAM_WINDOW_UPDATE) &&
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window_size_increment < 0 &&
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nghttp2_should_send_window_update(stream->local_window_size,
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stream->recv_window_size)) {
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window_size_increment = stream->recv_window_size;
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stream->recv_window_size = 0;
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}
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} else {
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return NGHTTP2_ERR_STREAM_CLOSED;
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}
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}
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if(window_size_increment > 0) {
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return nghttp2_session_add_window_update(session, flags, stream_id,
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window_size_increment);
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}
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return 0;
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}
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int nghttp2_submit_request(nghttp2_session *session, int32_t pri,
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const char **nv,
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const nghttp2_data_provider *data_prd,
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void *stream_user_data)
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{
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uint8_t flags = NGHTTP2_FLAG_NONE;
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if(data_prd == NULL || data_prd->read_callback == NULL) {
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flags |= NGHTTP2_FLAG_END_STREAM;
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}
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if(pri != NGHTTP2_PRI_DEFAULT) {
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flags |= NGHTTP2_FLAG_PRIORITY;
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}
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return nghttp2_submit_headers_shared(session, flags, -1, pri, nv,
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data_prd, stream_user_data);
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}
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int nghttp2_submit_response(nghttp2_session *session,
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int32_t stream_id, const char **nv,
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const nghttp2_data_provider *data_prd)
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{
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uint8_t flags = NGHTTP2_FLAG_NONE;
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if(data_prd == NULL || data_prd->read_callback == NULL) {
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flags |= NGHTTP2_FLAG_END_STREAM;
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}
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return nghttp2_submit_headers_shared(session, flags, stream_id,
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NGHTTP2_PRI_DEFAULT, nv, data_prd,
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NULL);
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}
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int nghttp2_submit_data(nghttp2_session *session, 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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int r;
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nghttp2_data *data_frame;
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uint8_t nflags = 0;
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if(nghttp2_session_get_stream(session, stream_id) == NULL) {
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return NGHTTP2_ERR_STREAM_CLOSED;
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}
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data_frame = malloc(sizeof(nghttp2_data));
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if(data_frame == NULL) {
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return NGHTTP2_ERR_NOMEM;
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}
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if(flags & NGHTTP2_FLAG_END_STREAM) {
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nflags |= NGHTTP2_FLAG_END_STREAM;
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}
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nghttp2_frame_data_init(data_frame, nflags, stream_id, data_prd);
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r = nghttp2_session_add_frame(session, NGHTTP2_CAT_DATA, data_frame, NULL);
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if(r != 0) {
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nghttp2_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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ssize_t nghttp2_pack_settings_payload(uint8_t *buf,
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nghttp2_settings_entry *iv, size_t niv)
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{
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/* Assume that current flow_control_option is 0 (which means that
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flow control is enabled) */
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if(!nghttp2_iv_check(iv, niv, 0)) {
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return NGHTTP2_ERR_INVALID_ARGUMENT;
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}
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return nghttp2_frame_pack_settings_payload(buf, iv, niv);
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}
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