int nghttp2_submit_priority(nghttp2_session *session, uint8_t flags _U_,
int32_t stream_id,
const nghttp2_priority_spec *pri_spec) {
int rv;
nghttp2_outbound_item *item;
nghttp2_frame *frame;
nghttp2_priority_spec copy_pri_spec;
nghttp2_mem *mem;
mem = &session->mem;
if (stream_id == 0 || pri_spec == NULL) {
return NGHTTP2_ERR_INVALID_ARGUMENT;
}
if (stream_id == pri_spec->stream_id) {
return NGHTTP2_ERR_INVALID_ARGUMENT;
}
copy_pri_spec = *pri_spec;
nghttp2_priority_spec_normalize_weight(©_pri_spec);
item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
if (item == NULL) {
return NGHTTP2_ERR_NOMEM;
}
nghttp2_outbound_item_init(item);
frame = &item->frame;
nghttp2_frame_priority_init(&frame->priority, stream_id, ©_pri_spec);
rv = nghttp2_session_add_item(session, item);
if (rv != 0) {
nghttp2_frame_priority_free(&frame->priority);
nghttp2_mem_free(mem, item);
return rv;
}
return 0;
}
int nghttp2_submit_data(nghttp2_session *session, uint8_t flags,
int32_t stream_id,
const nghttp2_data_provider *data_prd) {
int rv;
nghttp2_outbound_item *item;
nghttp2_frame *frame;
nghttp2_data_aux_data *aux_data;
uint8_t nflags = flags & NGHTTP2_FLAG_END_STREAM;
nghttp2_mem *mem;
mem = &session->mem;
if (stream_id == 0) {
return NGHTTP2_ERR_INVALID_ARGUMENT;
}
item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
if (item == NULL) {
return NGHTTP2_ERR_NOMEM;
}
nghttp2_outbound_item_init(item);
frame = &item->frame;
aux_data = &item->aux_data.data;
aux_data->data_prd = *data_prd;
aux_data->eof = 0;
aux_data->flags = nflags;
/* flags are sent on transmission */
nghttp2_frame_data_init(&frame->data, NGHTTP2_FLAG_NONE, stream_id);
rv = nghttp2_session_add_item(session, item);
if (rv != 0) {
nghttp2_frame_data_free(&frame->data);
nghttp2_mem_free(mem, item);
return rv;
}
return 0;
}
int nghttp2_submit_extension(nghttp2_session *session, uint8_t type,
uint8_t flags, int32_t stream_id, void *payload) {
int rv;
nghttp2_outbound_item *item;
nghttp2_frame *frame;
nghttp2_mem *mem;
mem = &session->mem;
if (type <= NGHTTP2_CONTINUATION) {
return NGHTTP2_ERR_INVALID_ARGUMENT;
}
if (!session->callbacks.pack_extension_callback) {
return NGHTTP2_ERR_INVALID_STATE;
}
item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
if (item == NULL) {
return NGHTTP2_ERR_NOMEM;
}
nghttp2_outbound_item_init(item);
frame = &item->frame;
nghttp2_frame_extension_init(&frame->ext, type, flags, stream_id, payload);
rv = nghttp2_session_add_item(session, item);
if (rv != 0) {
nghttp2_frame_extension_free(&frame->ext);
nghttp2_mem_free(mem, item);
return rv;
}
return 0;
}
/* This function takes ownership of |nva_copy|. Regardless of the
return value, the caller must not free |nva_copy| after this
function returns. */
static int32_t submit_headers_shared(nghttp2_session *session, uint8_t flags,
int32_t stream_id,
const nghttp2_priority_spec *pri_spec,
nghttp2_nv *nva_copy, size_t nvlen,
const nghttp2_data_provider *data_prd,
void *stream_user_data) {
int rv;
uint8_t flags_copy;
nghttp2_outbound_item *item = NULL;
nghttp2_frame *frame = NULL;
nghttp2_headers_category hcat;
nghttp2_mem *mem;
mem = &session->mem;
if (stream_id == 0) {
rv = NGHTTP2_ERR_INVALID_ARGUMENT;
goto fail;
}
if (stream_id == -1) {
if ((int32_t)session->next_stream_id == pri_spec->stream_id) {
rv = NGHTTP2_ERR_INVALID_ARGUMENT;
goto fail;
}
} else if (stream_id == pri_spec->stream_id) {
rv = NGHTTP2_ERR_INVALID_ARGUMENT;
goto fail;
}
item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
if (item == NULL) {
rv = NGHTTP2_ERR_NOMEM;
goto fail;
}
nghttp2_outbound_item_init(item);
if (data_prd != NULL && data_prd->read_callback != NULL) {
item->aux_data.headers.data_prd = *data_prd;
}
item->aux_data.headers.stream_user_data = stream_user_data;
flags_copy =
(uint8_t)((flags & (NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_PRIORITY)) |
NGHTTP2_FLAG_END_HEADERS);
if (stream_id == -1) {
if (session->next_stream_id > INT32_MAX) {
rv = NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE;
goto fail;
}
stream_id = (int32_t)session->next_stream_id;
session->next_stream_id += 2;
hcat = NGHTTP2_HCAT_REQUEST;
} else {
/* More specific categorization will be done later. */
hcat = NGHTTP2_HCAT_HEADERS;
}
frame = &item->frame;
nghttp2_frame_headers_init(&frame->headers, flags_copy, stream_id, hcat,
pri_spec, nva_copy, nvlen);
rv = nghttp2_session_add_item(session, item);
if (rv != 0) {
nghttp2_frame_headers_free(&frame->headers, mem);
goto fail2;
}
if (hcat == NGHTTP2_HCAT_REQUEST) {
return stream_id;
}
return 0;
fail:
/* nghttp2_frame_headers_init() takes ownership of nva_copy. */
nghttp2_nv_array_del(nva_copy, mem);
fail2:
nghttp2_mem_free(mem, item);
return rv;
}
int32_t nghttp2_submit_push_promise(nghttp2_session *session, uint8_t flags _U_,
int32_t stream_id, const nghttp2_nv *nva,
size_t nvlen,
void *promised_stream_user_data) {
nghttp2_outbound_item *item;
nghttp2_frame *frame;
nghttp2_nv *nva_copy;
uint8_t flags_copy;
int32_t promised_stream_id;
int rv;
nghttp2_mem *mem;
mem = &session->mem;
if (stream_id == 0 || nghttp2_session_is_my_stream_id(session, stream_id)) {
return NGHTTP2_ERR_INVALID_ARGUMENT;
}
if (!session->server) {
return NGHTTP2_ERR_PROTO;
}
/* All 32bit signed stream IDs are spent. */
if (session->next_stream_id > INT32_MAX) {
return NGHTTP2_ERR_STREAM_ID_NOT_AVAILABLE;
}
item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
if (item == NULL) {
return NGHTTP2_ERR_NOMEM;
}
nghttp2_outbound_item_init(item);
item->aux_data.headers.stream_user_data = promised_stream_user_data;
frame = &item->frame;
rv = nghttp2_nv_array_copy(&nva_copy, nva, nvlen, mem);
if (rv < 0) {
nghttp2_mem_free(mem, item);
return rv;
}
flags_copy = NGHTTP2_FLAG_END_HEADERS;
promised_stream_id = (int32_t)session->next_stream_id;
session->next_stream_id += 2;
nghttp2_frame_push_promise_init(&frame->push_promise, flags_copy, stream_id,
promised_stream_id, nva_copy, nvlen);
rv = nghttp2_session_add_item(session, item);
if (rv != 0) {
nghttp2_frame_push_promise_free(&frame->push_promise, mem);
nghttp2_mem_free(mem, item);
return rv;
}
return promised_stream_id;
}
int nghttp2_submit_altsvc(nghttp2_session *session, uint8_t flags _U_,
int32_t stream_id, const uint8_t *origin,
size_t origin_len, const uint8_t *field_value,
size_t field_value_len) {
nghttp2_mem *mem;
uint8_t *buf, *p;
uint8_t *origin_copy;
uint8_t *field_value_copy;
nghttp2_outbound_item *item;
nghttp2_frame *frame;
nghttp2_ext_altsvc *altsvc;
int rv;
mem = &session->mem;
if (!session->server) {
return NGHTTP2_ERR_INVALID_STATE;
}
if (2 + origin_len + field_value_len > NGHTTP2_MAX_PAYLOADLEN) {
return NGHTTP2_ERR_INVALID_ARGUMENT;
}
if (stream_id == 0) {
if (origin_len == 0) {
return NGHTTP2_ERR_INVALID_ARGUMENT;
}
} else if (origin_len != 0) {
return NGHTTP2_ERR_INVALID_ARGUMENT;
}
buf = nghttp2_mem_malloc(mem, origin_len + field_value_len + 2);
if (buf == NULL) {
return NGHTTP2_ERR_NOMEM;
}
p = buf;
origin_copy = p;
if (origin_len) {
p = nghttp2_cpymem(p, origin, origin_len);
}
*p++ = '\0';
field_value_copy = p;
if (field_value_len) {
p = nghttp2_cpymem(p, field_value, field_value_len);
}
*p++ = '\0';
item = nghttp2_mem_malloc(mem, sizeof(nghttp2_outbound_item));
if (item == NULL) {
rv = NGHTTP2_ERR_NOMEM;
goto fail_item_malloc;
}
nghttp2_outbound_item_init(item);
item->aux_data.ext.builtin = 1;
altsvc = &item->ext_frame_payload.altsvc;
frame = &item->frame;
frame->ext.payload = altsvc;
nghttp2_frame_altsvc_init(&frame->ext, stream_id, origin_copy, origin_len,
field_value_copy, field_value_len);
rv = nghttp2_session_add_item(session, item);
if (rv != 0) {
nghttp2_frame_altsvc_free(&frame->ext, mem);
nghttp2_mem_free(mem, item);
return rv;
}
return 0;
fail_item_malloc:
free(buf);
return rv;
}
