void nghttp2_frame_unpack_goaway_payload(nghttp2_goaway *frame,
const uint8_t *payload,
size_t payloadlen)
{
frame->last_stream_id = nghttp2_get_uint32(payload) & NGHTTP2_STREAM_ID_MASK;
frame->error_code = nghttp2_get_uint32(payload+4);
/* TODO Currently we don't buffer debug data */
frame->opaque_data = NULL;
frame->opaque_data_len = 0;
}
void nghttp2_frame_unpack_window_update_payload(nghttp2_window_update *frame,
const uint8_t *payload,
size_t payloadlen)
{
frame->window_size_increment = nghttp2_get_uint32(payload) &
NGHTTP2_WINDOW_SIZE_INCREMENT_MASK;
}
void nghttp2_frame_unpack_frame_hd(nghttp2_frame_hd *hd, const uint8_t* buf)
{
hd->length = nghttp2_get_uint16(&buf[0]) & NGHTTP2_FRAME_LENGTH_MASK;
hd->type = buf[2];
hd->flags = buf[3];
hd->stream_id = nghttp2_get_uint32(&buf[4]) & NGHTTP2_STREAM_ID_MASK;
}
int nghttp2_frame_unpack_push_promise_payload(nghttp2_push_promise *frame,
const uint8_t *payload,
size_t payloadlen)
{
frame->promised_stream_id = nghttp2_get_uint32(payload) &
NGHTTP2_STREAM_ID_MASK;
frame->nva = NULL;
frame->nvlen = 0;
return 0;
}
int nghttp2_frame_unpack_settings_payload(nghttp2_settings_entry **iv_ptr,
size_t *niv_ptr,
const uint8_t *payload,
size_t payloadlen)
{
size_t i;
*niv_ptr = payloadlen / 8;
*iv_ptr = malloc((*niv_ptr)*sizeof(nghttp2_settings_entry));
if(*iv_ptr == NULL) {
return NGHTTP2_ERR_NOMEM;
}
for(i = 0; i < *niv_ptr; ++i) {
size_t off = i*8;
(*iv_ptr)[i].settings_id = nghttp2_get_uint32(&payload[off]) &
NGHTTP2_SETTINGS_ID_MASK;
(*iv_ptr)[i].value = nghttp2_get_uint32(&payload[4+off]);
}
return 0;
}
int nghttp2_frame_unpack_rst_stream(nghttp2_rst_stream *frame,
const uint8_t *head, size_t headlen,
const uint8_t *payload, size_t payloadlen)
{
if(payloadlen != 4) {
return NGHTTP2_ERR_INVALID_FRAME;
}
nghttp2_frame_unpack_frame_hd(&frame->hd, head);
frame->error_code = nghttp2_get_uint32(payload);
return 0;
}
int nghttp2_frame_unpack_priority(nghttp2_priority *frame,
const uint8_t *head, size_t headlen,
const uint8_t *payload, size_t payloadlen)
{
if(payloadlen != 4) {
return NGHTTP2_ERR_INVALID_FRAME;
}
nghttp2_frame_unpack_frame_hd(&frame->hd, head);
frame->pri = nghttp2_get_uint32(payload) & NGHTTP2_PRIORITY_MASK;
return 0;
}
int nghttp2_frame_unpack_headers_payload(nghttp2_headers *frame,
const uint8_t *payload,
size_t payloadlen)
{
if(frame->hd.flags & NGHTTP2_FLAG_PRIORITY) {
frame->pri = nghttp2_get_uint32(payload) & NGHTTP2_PRIORITY_MASK;
} else {
frame->pri = NGHTTP2_PRI_DEFAULT;
}
frame->nva = NULL;
frame->nvlen = 0;
return 0;
}
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_INVALID_FRAME;
}
nghttp2_frame_unpack_frame_hd(&frame->hd, head);
frame->window_size_increment = nghttp2_get_uint32(payload) &
NGHTTP2_WINDOW_SIZE_INCREMENT_MASK;
return 0;
}
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_INVALID_FRAME;
}
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;
}
int nghttp2_frame_unpack_push_promise_without_nv(nghttp2_push_promise *frame,
const uint8_t *head,
size_t headlen,
const uint8_t *payload,
size_t payloadlen)
{
nghttp2_frame_unpack_frame_hd(&frame->hd, head);
/* TODO Return error if header continuation is used for now */
if((head[3] & NGHTTP2_FLAG_END_PUSH_PROMISE) == 0) {
return NGHTTP2_ERR_PROTO;
}
if(payloadlen < 4) {
return NGHTTP2_ERR_INVALID_FRAME;
}
frame->promised_stream_id = nghttp2_get_uint32(payload) &
NGHTTP2_STREAM_ID_MASK;
frame->nva = NULL;
frame->nvlen = 0;
return 0;
}
int nghttp2_frame_unpack_headers_without_nv(nghttp2_headers *frame,
const uint8_t *head,
size_t headlen,
const uint8_t *payload,
size_t payloadlen)
{
nghttp2_frame_unpack_frame_hd(&frame->hd, head);
/* TODO Return error if header continuation is used for now */
if((head[3] & NGHTTP2_FLAG_END_HEADERS) == 0) {
return NGHTTP2_ERR_PROTO;
}
if(head[3] & NGHTTP2_FLAG_PRIORITY) {
if(payloadlen < 4) {
return NGHTTP2_ERR_INVALID_FRAME;
}
frame->pri = nghttp2_get_uint32(payload) & NGHTTP2_PRIORITY_MASK;
} else {
frame->pri = NGHTTP2_PRI_DEFAULT;
}
frame->nva = NULL;
frame->nvlen = 0;
return 0;
}
#include "nghttp2_net.h"
#include "nghttp2_priority_spec.h"
void nghttp2_frame_pack_frame_hd(uint8_t *buf, const nghttp2_frame_hd *hd) {
nghttp2_put_uint32be(&buf[0], (uint32_t)(hd->length << 8));
buf[3] = hd->type;
buf[4] = hd->flags;
nghttp2_put_uint32be(&buf[5], (uint32_t)hd->stream_id);
/* ignore hd->reserved for now */
}
void nghttp2_frame_unpack_frame_hd(nghttp2_frame_hd *hd, const uint8_t *buf) {
hd->length = nghttp2_get_uint32(&buf[0]) >> 8;
hd->type = buf[3];
hd->flags = buf[4];
hd->stream_id = nghttp2_get_uint32(&buf[5]) & NGHTTP2_STREAM_ID_MASK;
hd->reserved = 0;
}
void nghttp2_frame_hd_init(nghttp2_frame_hd *hd, size_t length, uint8_t type,
uint8_t flags, int32_t stream_id) {
hd->length = length;
hd->type = type;
hd->flags = flags;
hd->stream_id = stream_id;
hd->reserved = 0;
}
void nghttp2_frame_headers_init(nghttp2_headers *frame, uint8_t flags,
int32_t stream_id, nghttp2_headers_category cat,
const nghttp2_priority_spec *pri_spec,
void nghttp2_frame_unpack_settings_entry(nghttp2_settings_entry *iv,
const uint8_t *payload)
{
iv->settings_id = payload[0];
iv->value = nghttp2_get_uint32(&payload[1]);
}
void nghttp2_frame_unpack_rst_stream_payload(nghttp2_rst_stream *frame,
const uint8_t *payload,
size_t payloadlen)
{
frame->error_code = nghttp2_get_uint32(payload);
}
void nghttp2_frame_unpack_priority_payload(nghttp2_priority *frame,
const uint8_t *payload,
size_t payloadlen)
{
frame->pri = nghttp2_get_uint32(payload) & NGHTTP2_PRIORITY_MASK;
}
