diff options
Diffstat (limited to 'deps/node/deps/nghttp2/lib/nghttp2_frame.c')
| -rw-r--r-- | deps/node/deps/nghttp2/lib/nghttp2_frame.c | 1134 |
1 files changed, 0 insertions, 1134 deletions
diff --git a/deps/node/deps/nghttp2/lib/nghttp2_frame.c b/deps/node/deps/nghttp2/lib/nghttp2_frame.c deleted file mode 100644 index 4821de40..00000000 --- a/deps/node/deps/nghttp2/lib/nghttp2_frame.c +++ /dev/null @@ -1,1134 +0,0 @@ -/* - * nghttp2 - HTTP/2 C Library - * - * Copyright (c) 2013 Tatsuhiro Tsujikawa - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be - * included in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE - * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION - * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION - * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ -#include "nghttp2_frame.h" - -#include <string.h> -#include <assert.h> -#include <stdio.h> -#include <errno.h> - -#include "nghttp2_helper.h" -#include "nghttp2_net.h" -#include "nghttp2_priority_spec.h" -#include "nghttp2_debug.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, - nghttp2_nv *nva, size_t nvlen) { - nghttp2_frame_hd_init(&frame->hd, 0, NGHTTP2_HEADERS, flags, stream_id); - frame->padlen = 0; - frame->nva = nva; - frame->nvlen = nvlen; - frame->cat = cat; - - if (pri_spec) { - frame->pri_spec = *pri_spec; - } else { - nghttp2_priority_spec_default_init(&frame->pri_spec); - } -} - -void nghttp2_frame_headers_free(nghttp2_headers *frame, nghttp2_mem *mem) { - nghttp2_nv_array_del(frame->nva, mem); -} - -void nghttp2_frame_priority_init(nghttp2_priority *frame, int32_t stream_id, - const nghttp2_priority_spec *pri_spec) { - nghttp2_frame_hd_init(&frame->hd, NGHTTP2_PRIORITY_SPECLEN, NGHTTP2_PRIORITY, - NGHTTP2_FLAG_NONE, stream_id); - frame->pri_spec = *pri_spec; -} - -void nghttp2_frame_priority_free(nghttp2_priority *frame) { (void)frame; } - -void nghttp2_frame_rst_stream_init(nghttp2_rst_stream *frame, int32_t stream_id, - uint32_t error_code) { - nghttp2_frame_hd_init(&frame->hd, 4, NGHTTP2_RST_STREAM, NGHTTP2_FLAG_NONE, - stream_id); - frame->error_code = error_code; -} - -void nghttp2_frame_rst_stream_free(nghttp2_rst_stream *frame) { (void)frame; } - -void nghttp2_frame_settings_init(nghttp2_settings *frame, uint8_t flags, - nghttp2_settings_entry *iv, size_t niv) { - nghttp2_frame_hd_init(&frame->hd, niv * NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH, - NGHTTP2_SETTINGS, flags, 0); - frame->niv = niv; - frame->iv = iv; -} - -void nghttp2_frame_settings_free(nghttp2_settings *frame, nghttp2_mem *mem) { - nghttp2_mem_free(mem, frame->iv); -} - -void nghttp2_frame_push_promise_init(nghttp2_push_promise *frame, uint8_t flags, - int32_t stream_id, - int32_t promised_stream_id, - nghttp2_nv *nva, size_t nvlen) { - nghttp2_frame_hd_init(&frame->hd, 0, NGHTTP2_PUSH_PROMISE, flags, stream_id); - frame->padlen = 0; - frame->nva = nva; - frame->nvlen = nvlen; - frame->promised_stream_id = promised_stream_id; - frame->reserved = 0; -} - -void nghttp2_frame_push_promise_free(nghttp2_push_promise *frame, - nghttp2_mem *mem) { - nghttp2_nv_array_del(frame->nva, mem); -} - -void nghttp2_frame_ping_init(nghttp2_ping *frame, uint8_t flags, - const uint8_t *opaque_data) { - nghttp2_frame_hd_init(&frame->hd, 8, NGHTTP2_PING, flags, 0); - if (opaque_data) { - memcpy(frame->opaque_data, opaque_data, sizeof(frame->opaque_data)); - } else { - memset(frame->opaque_data, 0, sizeof(frame->opaque_data)); - } -} - -void nghttp2_frame_ping_free(nghttp2_ping *frame) { (void)frame; } - -void nghttp2_frame_goaway_init(nghttp2_goaway *frame, int32_t last_stream_id, - uint32_t error_code, uint8_t *opaque_data, - size_t opaque_data_len) { - nghttp2_frame_hd_init(&frame->hd, 8 + opaque_data_len, NGHTTP2_GOAWAY, - NGHTTP2_FLAG_NONE, 0); - frame->last_stream_id = last_stream_id; - frame->error_code = error_code; - frame->opaque_data = opaque_data; - frame->opaque_data_len = opaque_data_len; - frame->reserved = 0; -} - -void nghttp2_frame_goaway_free(nghttp2_goaway *frame, nghttp2_mem *mem) { - nghttp2_mem_free(mem, frame->opaque_data); -} - -void nghttp2_frame_window_update_init(nghttp2_window_update *frame, - uint8_t flags, int32_t stream_id, - int32_t window_size_increment) { - nghttp2_frame_hd_init(&frame->hd, 4, NGHTTP2_WINDOW_UPDATE, flags, stream_id); - frame->window_size_increment = window_size_increment; - frame->reserved = 0; -} - -void nghttp2_frame_window_update_free(nghttp2_window_update *frame) { - (void)frame; -} - -size_t nghttp2_frame_trail_padlen(nghttp2_frame *frame, size_t padlen) { - /* We have iframe->padlen == 0, but iframe->frame.hd.flags may have - NGHTTP2_FLAG_PADDED set. This happens when receiving - CONTINUATION frame, since we don't reset flags after HEADERS was - received. */ - if (padlen == 0) { - return 0; - } - return padlen - ((frame->hd.flags & NGHTTP2_FLAG_PADDED) > 0); -} - -void nghttp2_frame_data_init(nghttp2_data *frame, uint8_t flags, - int32_t stream_id) { - /* At this moment, the length of DATA frame is unknown */ - nghttp2_frame_hd_init(&frame->hd, 0, NGHTTP2_DATA, flags, stream_id); - frame->padlen = 0; -} - -void nghttp2_frame_data_free(nghttp2_data *frame) { (void)frame; } - -void nghttp2_frame_extension_init(nghttp2_extension *frame, uint8_t type, - uint8_t flags, int32_t stream_id, - void *payload) { - nghttp2_frame_hd_init(&frame->hd, 0, type, flags, stream_id); - frame->payload = payload; -} - -void nghttp2_frame_extension_free(nghttp2_extension *frame) { (void)frame; } - -void nghttp2_frame_altsvc_init(nghttp2_extension *frame, int32_t stream_id, - uint8_t *origin, size_t origin_len, - uint8_t *field_value, size_t field_value_len) { - nghttp2_ext_altsvc *altsvc; - - nghttp2_frame_hd_init(&frame->hd, 2 + origin_len + field_value_len, - NGHTTP2_ALTSVC, NGHTTP2_FLAG_NONE, stream_id); - - altsvc = frame->payload; - altsvc->origin = origin; - altsvc->origin_len = origin_len; - altsvc->field_value = field_value; - altsvc->field_value_len = field_value_len; -} - -void nghttp2_frame_altsvc_free(nghttp2_extension *frame, nghttp2_mem *mem) { - nghttp2_ext_altsvc *altsvc; - - altsvc = frame->payload; - if (altsvc == NULL) { - return; - } - /* We use the same buffer for altsvc->origin and - altsvc->field_value. */ - nghttp2_mem_free(mem, altsvc->origin); -} - -void nghttp2_frame_origin_init(nghttp2_extension *frame, - nghttp2_origin_entry *ov, size_t nov) { - nghttp2_ext_origin *origin; - size_t payloadlen = 0; - size_t i; - - for (i = 0; i < nov; ++i) { - payloadlen += 2 + ov[i].origin_len; - } - - nghttp2_frame_hd_init(&frame->hd, payloadlen, NGHTTP2_ORIGIN, - NGHTTP2_FLAG_NONE, 0); - - origin = frame->payload; - origin->ov = ov; - origin->nov = nov; -} - -void nghttp2_frame_origin_free(nghttp2_extension *frame, nghttp2_mem *mem) { - nghttp2_ext_origin *origin; - - origin = frame->payload; - if (origin == NULL) { - return; - } - /* We use the same buffer for all resources pointed by the field of - origin directly or indirectly. */ - nghttp2_mem_free(mem, origin->ov); -} - -size_t nghttp2_frame_priority_len(uint8_t flags) { - if (flags & NGHTTP2_FLAG_PRIORITY) { - return NGHTTP2_PRIORITY_SPECLEN; - } - - return 0; -} - -size_t nghttp2_frame_headers_payload_nv_offset(nghttp2_headers *frame) { - return nghttp2_frame_priority_len(frame->hd.flags); -} - -/* - * Call this function after payload was serialized, but not before - * changing buf->pos and serializing frame header. - * - * This function assumes bufs->cur points to the last buf chain of the - * frame(s). - * - * This function serializes frame header for HEADERS/PUSH_PROMISE and - * handles their successive CONTINUATION frames. - * - * We don't process any padding here. - */ -static int frame_pack_headers_shared(nghttp2_bufs *bufs, - nghttp2_frame_hd *frame_hd) { - nghttp2_buf *buf; - nghttp2_buf_chain *ci, *ce; - nghttp2_frame_hd hd; - - buf = &bufs->head->buf; - - hd = *frame_hd; - hd.length = nghttp2_buf_len(buf); - - DEBUGF("send: HEADERS/PUSH_PROMISE, payloadlen=%zu\n", hd.length); - - /* We have multiple frame buffers, which means one or more - CONTINUATION frame is involved. Remove END_HEADERS flag from the - first frame. */ - if (bufs->head != bufs->cur) { - hd.flags = (uint8_t)(hd.flags & ~NGHTTP2_FLAG_END_HEADERS); - } - - buf->pos -= NGHTTP2_FRAME_HDLEN; - nghttp2_frame_pack_frame_hd(buf->pos, &hd); - - if (bufs->head != bufs->cur) { - /* 2nd and later frames are CONTINUATION frames. */ - hd.type = NGHTTP2_CONTINUATION; - /* We don't have no flags except for last CONTINUATION */ - hd.flags = NGHTTP2_FLAG_NONE; - - ce = bufs->cur; - - for (ci = bufs->head->next; ci != ce; ci = ci->next) { - buf = &ci->buf; - - hd.length = nghttp2_buf_len(buf); - - DEBUGF("send: int CONTINUATION, payloadlen=%zu\n", hd.length); - - buf->pos -= NGHTTP2_FRAME_HDLEN; - nghttp2_frame_pack_frame_hd(buf->pos, &hd); - } - - buf = &ci->buf; - hd.length = nghttp2_buf_len(buf); - /* Set END_HEADERS flag for last CONTINUATION */ - hd.flags = NGHTTP2_FLAG_END_HEADERS; - - DEBUGF("send: last CONTINUATION, payloadlen=%zu\n", hd.length); - - buf->pos -= NGHTTP2_FRAME_HDLEN; - nghttp2_frame_pack_frame_hd(buf->pos, &hd); - } - - return 0; -} - -int nghttp2_frame_pack_headers(nghttp2_bufs *bufs, nghttp2_headers *frame, - nghttp2_hd_deflater *deflater) { - size_t nv_offset; - int rv; - nghttp2_buf *buf; - - assert(bufs->head == bufs->cur); - - nv_offset = nghttp2_frame_headers_payload_nv_offset(frame); - - buf = &bufs->cur->buf; - - buf->pos += nv_offset; - buf->last = buf->pos; - - /* This call will adjust buf->last to the correct position */ - rv = nghttp2_hd_deflate_hd_bufs(deflater, bufs, frame->nva, frame->nvlen); - - if (rv == NGHTTP2_ERR_BUFFER_ERROR) { - rv = NGHTTP2_ERR_HEADER_COMP; - } - - buf->pos -= nv_offset; - - if (rv != 0) { - return rv; - } - - if (frame->hd.flags & NGHTTP2_FLAG_PRIORITY) { - nghttp2_frame_pack_priority_spec(buf->pos, &frame->pri_spec); - } - - frame->padlen = 0; - frame->hd.length = nghttp2_bufs_len(bufs); - - return frame_pack_headers_shared(bufs, &frame->hd); -} - -void nghttp2_frame_pack_priority_spec(uint8_t *buf, - const nghttp2_priority_spec *pri_spec) { - nghttp2_put_uint32be(buf, (uint32_t)pri_spec->stream_id); - if (pri_spec->exclusive) { - buf[0] |= 0x80; - } - buf[4] = (uint8_t)(pri_spec->weight - 1); -} - -void nghttp2_frame_unpack_priority_spec(nghttp2_priority_spec *pri_spec, - const uint8_t *payload) { - int32_t dep_stream_id; - uint8_t exclusive; - int32_t weight; - - dep_stream_id = nghttp2_get_uint32(payload) & NGHTTP2_STREAM_ID_MASK; - exclusive = (payload[0] & 0x80) > 0; - weight = payload[4] + 1; - - nghttp2_priority_spec_init(pri_spec, dep_stream_id, weight, exclusive); -} - -int nghttp2_frame_unpack_headers_payload(nghttp2_headers *frame, - const uint8_t *payload) { - if (frame->hd.flags & NGHTTP2_FLAG_PRIORITY) { - nghttp2_frame_unpack_priority_spec(&frame->pri_spec, payload); - } else { - nghttp2_priority_spec_default_init(&frame->pri_spec); - } - - frame->nva = NULL; - frame->nvlen = 0; - - return 0; -} - -int nghttp2_frame_pack_priority(nghttp2_bufs *bufs, nghttp2_priority *frame) { - nghttp2_buf *buf; - - assert(bufs->head == bufs->cur); - - buf = &bufs->head->buf; - - assert(nghttp2_buf_avail(buf) >= NGHTTP2_PRIORITY_SPECLEN); - - buf->pos -= NGHTTP2_FRAME_HDLEN; - - nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); - - nghttp2_frame_pack_priority_spec(buf->last, &frame->pri_spec); - - buf->last += NGHTTP2_PRIORITY_SPECLEN; - - return 0; -} - -void nghttp2_frame_unpack_priority_payload(nghttp2_priority *frame, - const uint8_t *payload) { - nghttp2_frame_unpack_priority_spec(&frame->pri_spec, payload); -} - -int nghttp2_frame_pack_rst_stream(nghttp2_bufs *bufs, - nghttp2_rst_stream *frame) { - nghttp2_buf *buf; - - assert(bufs->head == bufs->cur); - - buf = &bufs->head->buf; - - assert(nghttp2_buf_avail(buf) >= 4); - - buf->pos -= NGHTTP2_FRAME_HDLEN; - - nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); - - nghttp2_put_uint32be(buf->last, frame->error_code); - buf->last += 4; - - return 0; -} - -void nghttp2_frame_unpack_rst_stream_payload(nghttp2_rst_stream *frame, - const uint8_t *payload) { - frame->error_code = nghttp2_get_uint32(payload); -} - -int nghttp2_frame_pack_settings(nghttp2_bufs *bufs, nghttp2_settings *frame) { - nghttp2_buf *buf; - - assert(bufs->head == bufs->cur); - - buf = &bufs->head->buf; - - if (nghttp2_buf_avail(buf) < frame->hd.length) { - return NGHTTP2_ERR_FRAME_SIZE_ERROR; - } - - buf->pos -= NGHTTP2_FRAME_HDLEN; - - nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); - - buf->last += - nghttp2_frame_pack_settings_payload(buf->last, frame->iv, frame->niv); - - return 0; -} - -size_t nghttp2_frame_pack_settings_payload(uint8_t *buf, - const nghttp2_settings_entry *iv, - size_t niv) { - size_t i; - for (i = 0; i < niv; ++i, buf += NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH) { - nghttp2_put_uint16be(buf, (uint16_t)iv[i].settings_id); - nghttp2_put_uint32be(buf + 2, iv[i].value); - } - return NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH * niv; -} - -void nghttp2_frame_unpack_settings_payload(nghttp2_settings *frame, - nghttp2_settings_entry *iv, - size_t niv) { - frame->iv = iv; - frame->niv = niv; -} - -void nghttp2_frame_unpack_settings_entry(nghttp2_settings_entry *iv, - const uint8_t *payload) { - iv->settings_id = nghttp2_get_uint16(&payload[0]); - iv->value = nghttp2_get_uint32(&payload[2]); -} - -int nghttp2_frame_unpack_settings_payload2(nghttp2_settings_entry **iv_ptr, - size_t *niv_ptr, - const uint8_t *payload, - size_t payloadlen, - nghttp2_mem *mem) { - size_t i; - - *niv_ptr = payloadlen / NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH; - - if (*niv_ptr == 0) { - *iv_ptr = NULL; - - return 0; - } - - *iv_ptr = - nghttp2_mem_malloc(mem, (*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 * NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH; - nghttp2_frame_unpack_settings_entry(&(*iv_ptr)[i], &payload[off]); - } - - return 0; -} - -int nghttp2_frame_pack_push_promise(nghttp2_bufs *bufs, - nghttp2_push_promise *frame, - nghttp2_hd_deflater *deflater) { - size_t nv_offset = 4; - int rv; - nghttp2_buf *buf; - - assert(bufs->head == bufs->cur); - - buf = &bufs->cur->buf; - - buf->pos += nv_offset; - buf->last = buf->pos; - - /* This call will adjust buf->last to the correct position */ - rv = nghttp2_hd_deflate_hd_bufs(deflater, bufs, frame->nva, frame->nvlen); - - if (rv == NGHTTP2_ERR_BUFFER_ERROR) { - rv = NGHTTP2_ERR_HEADER_COMP; - } - - buf->pos -= nv_offset; - - if (rv != 0) { - return rv; - } - - nghttp2_put_uint32be(buf->pos, (uint32_t)frame->promised_stream_id); - - frame->padlen = 0; - frame->hd.length = nghttp2_bufs_len(bufs); - - return frame_pack_headers_shared(bufs, &frame->hd); -} - -int nghttp2_frame_unpack_push_promise_payload(nghttp2_push_promise *frame, - const uint8_t *payload) { - frame->promised_stream_id = - nghttp2_get_uint32(payload) & NGHTTP2_STREAM_ID_MASK; - frame->nva = NULL; - frame->nvlen = 0; - return 0; -} - -int nghttp2_frame_pack_ping(nghttp2_bufs *bufs, nghttp2_ping *frame) { - nghttp2_buf *buf; - - assert(bufs->head == bufs->cur); - - buf = &bufs->head->buf; - - assert(nghttp2_buf_avail(buf) >= 8); - - buf->pos -= NGHTTP2_FRAME_HDLEN; - - nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); - - buf->last = - nghttp2_cpymem(buf->last, frame->opaque_data, sizeof(frame->opaque_data)); - - return 0; -} - -void nghttp2_frame_unpack_ping_payload(nghttp2_ping *frame, - const uint8_t *payload) { - memcpy(frame->opaque_data, payload, sizeof(frame->opaque_data)); -} - -int nghttp2_frame_pack_goaway(nghttp2_bufs *bufs, nghttp2_goaway *frame) { - int rv; - nghttp2_buf *buf; - - assert(bufs->head == bufs->cur); - - buf = &bufs->head->buf; - - buf->pos -= NGHTTP2_FRAME_HDLEN; - - nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); - - nghttp2_put_uint32be(buf->last, (uint32_t)frame->last_stream_id); - buf->last += 4; - - nghttp2_put_uint32be(buf->last, frame->error_code); - buf->last += 4; - - rv = nghttp2_bufs_add(bufs, frame->opaque_data, frame->opaque_data_len); - - if (rv == NGHTTP2_ERR_BUFFER_ERROR) { - return NGHTTP2_ERR_FRAME_SIZE_ERROR; - } - - if (rv != 0) { - return rv; - } - - return 0; -} - -void nghttp2_frame_unpack_goaway_payload(nghttp2_goaway *frame, - const uint8_t *payload, - uint8_t *var_gift_payload, - size_t var_gift_payloadlen) { - frame->last_stream_id = nghttp2_get_uint32(payload) & NGHTTP2_STREAM_ID_MASK; - frame->error_code = nghttp2_get_uint32(payload + 4); - - frame->opaque_data = var_gift_payload; - frame->opaque_data_len = var_gift_payloadlen; -} - -int nghttp2_frame_unpack_goaway_payload2(nghttp2_goaway *frame, - const uint8_t *payload, - size_t payloadlen, nghttp2_mem *mem) { - uint8_t *var_gift_payload; - size_t var_gift_payloadlen; - - if (payloadlen > 8) { - var_gift_payloadlen = payloadlen - 8; - } else { - var_gift_payloadlen = 0; - } - - payloadlen -= var_gift_payloadlen; - - if (!var_gift_payloadlen) { - var_gift_payload = NULL; - } else { - var_gift_payload = nghttp2_mem_malloc(mem, var_gift_payloadlen); - - if (var_gift_payload == NULL) { - return NGHTTP2_ERR_NOMEM; - } - - memcpy(var_gift_payload, payload + 8, var_gift_payloadlen); - } - - nghttp2_frame_unpack_goaway_payload(frame, payload, var_gift_payload, - var_gift_payloadlen); - - return 0; -} - -int nghttp2_frame_pack_window_update(nghttp2_bufs *bufs, - nghttp2_window_update *frame) { - nghttp2_buf *buf; - - assert(bufs->head == bufs->cur); - - buf = &bufs->head->buf; - - assert(nghttp2_buf_avail(buf) >= 4); - - buf->pos -= NGHTTP2_FRAME_HDLEN; - - nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); - - nghttp2_put_uint32be(buf->last, (uint32_t)frame->window_size_increment); - buf->last += 4; - - return 0; -} - -void nghttp2_frame_unpack_window_update_payload(nghttp2_window_update *frame, - const uint8_t *payload) { - frame->window_size_increment = - nghttp2_get_uint32(payload) & NGHTTP2_WINDOW_SIZE_INCREMENT_MASK; -} - -int nghttp2_frame_pack_altsvc(nghttp2_bufs *bufs, nghttp2_extension *frame) { - int rv; - nghttp2_buf *buf; - nghttp2_ext_altsvc *altsvc; - - /* This is required with --disable-assert. */ - (void)rv; - - altsvc = frame->payload; - - buf = &bufs->head->buf; - - assert(nghttp2_buf_avail(buf) >= - 2 + altsvc->origin_len + altsvc->field_value_len); - - buf->pos -= NGHTTP2_FRAME_HDLEN; - - nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); - - nghttp2_put_uint16be(buf->last, (uint16_t)altsvc->origin_len); - buf->last += 2; - - rv = nghttp2_bufs_add(bufs, altsvc->origin, altsvc->origin_len); - - assert(rv == 0); - - rv = nghttp2_bufs_add(bufs, altsvc->field_value, altsvc->field_value_len); - - assert(rv == 0); - - return 0; -} - -void nghttp2_frame_unpack_altsvc_payload(nghttp2_extension *frame, - size_t origin_len, uint8_t *payload, - size_t payloadlen) { - nghttp2_ext_altsvc *altsvc; - uint8_t *p; - - altsvc = frame->payload; - p = payload; - - altsvc->origin = p; - - p += origin_len; - - altsvc->origin_len = origin_len; - - altsvc->field_value = p; - altsvc->field_value_len = (size_t)(payload + payloadlen - p); -} - -int nghttp2_frame_unpack_altsvc_payload2(nghttp2_extension *frame, - const uint8_t *payload, - size_t payloadlen, nghttp2_mem *mem) { - uint8_t *buf; - size_t origin_len; - - if (payloadlen < 2) { - return NGHTTP2_FRAME_SIZE_ERROR; - } - - origin_len = nghttp2_get_uint16(payload); - - buf = nghttp2_mem_malloc(mem, payloadlen - 2); - if (!buf) { - return NGHTTP2_ERR_NOMEM; - } - - nghttp2_cpymem(buf, payload + 2, payloadlen - 2); - - nghttp2_frame_unpack_altsvc_payload(frame, origin_len, buf, payloadlen - 2); - - return 0; -} - -int nghttp2_frame_pack_origin(nghttp2_bufs *bufs, nghttp2_extension *frame) { - nghttp2_buf *buf; - nghttp2_ext_origin *origin; - nghttp2_origin_entry *orig; - size_t i; - - origin = frame->payload; - - buf = &bufs->head->buf; - - if (nghttp2_buf_avail(buf) < frame->hd.length) { - return NGHTTP2_ERR_FRAME_SIZE_ERROR; - } - - buf->pos -= NGHTTP2_FRAME_HDLEN; - - nghttp2_frame_pack_frame_hd(buf->pos, &frame->hd); - - for (i = 0; i < origin->nov; ++i) { - orig = &origin->ov[i]; - nghttp2_put_uint16be(buf->last, (uint16_t)orig->origin_len); - buf->last += 2; - buf->last = nghttp2_cpymem(buf->last, orig->origin, orig->origin_len); - } - - assert(nghttp2_buf_len(buf) == NGHTTP2_FRAME_HDLEN + frame->hd.length); - - return 0; -} - -int nghttp2_frame_unpack_origin_payload(nghttp2_extension *frame, - const uint8_t *payload, - size_t payloadlen, nghttp2_mem *mem) { - nghttp2_ext_origin *origin; - const uint8_t *p, *end; - uint8_t *dst; - size_t originlen; - nghttp2_origin_entry *ov; - size_t nov = 0; - size_t len = 0; - - origin = frame->payload; - p = payload; - end = p + payloadlen; - - for (; p != end;) { - if (end - p < 2) { - return NGHTTP2_ERR_FRAME_SIZE_ERROR; - } - originlen = nghttp2_get_uint16(p); - p += 2; - if (originlen == 0) { - continue; - } - if (originlen > (size_t)(end - p)) { - return NGHTTP2_ERR_FRAME_SIZE_ERROR; - } - p += originlen; - /* 1 for terminal NULL */ - len += originlen + 1; - ++nov; - } - - if (nov == 0) { - origin->ov = NULL; - origin->nov = 0; - - return 0; - } - - len += nov * sizeof(nghttp2_origin_entry); - - ov = nghttp2_mem_malloc(mem, len); - if (ov == NULL) { - return NGHTTP2_ERR_NOMEM; - } - - origin->ov = ov; - origin->nov = nov; - - dst = (uint8_t *)ov + nov * sizeof(nghttp2_origin_entry); - p = payload; - - for (; p != end;) { - originlen = nghttp2_get_uint16(p); - p += 2; - if (originlen == 0) { - continue; - } - ov->origin = dst; - ov->origin_len = originlen; - dst = nghttp2_cpymem(dst, p, originlen); - *dst++ = '\0'; - p += originlen; - ++ov; - } - - return 0; -} - -nghttp2_settings_entry *nghttp2_frame_iv_copy(const nghttp2_settings_entry *iv, - size_t niv, nghttp2_mem *mem) { - nghttp2_settings_entry *iv_copy; - size_t len = niv * sizeof(nghttp2_settings_entry); - - if (len == 0) { - return NULL; - } - - iv_copy = nghttp2_mem_malloc(mem, len); - - if (iv_copy == NULL) { - return NULL; - } - - memcpy(iv_copy, iv, len); - - return iv_copy; -} - -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, nghttp2_mem *mem) { - nghttp2_mem_free(mem, nva); -} - -static int bytes_compar(const uint8_t *a, size_t alen, const uint8_t *b, - size_t blen) { - int rv; - - if (alen == blen) { - return memcmp(a, b, alen); - } - - if (alen < blen) { - rv = memcmp(a, b, alen); - - if (rv == 0) { - return -1; - } - - return rv; - } - - rv = memcmp(a, b, blen); - - if (rv == 0) { - return 1; - } - - 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); -} - -int nghttp2_nv_array_copy(nghttp2_nv **nva_ptr, const nghttp2_nv *nva, - size_t nvlen, nghttp2_mem *mem) { - size_t i; - uint8_t *data = NULL; - size_t buflen = 0; - nghttp2_nv *p; - - if (nvlen == 0) { - *nva_ptr = NULL; - - return 0; - } - - for (i = 0; i < nvlen; ++i) { - /* + 1 for null-termination */ - if ((nva[i].flags & NGHTTP2_NV_FLAG_NO_COPY_NAME) == 0) { - buflen += nva[i].namelen + 1; - } - if ((nva[i].flags & NGHTTP2_NV_FLAG_NO_COPY_VALUE) == 0) { - buflen += nva[i].valuelen + 1; - } - } - - buflen += sizeof(nghttp2_nv) * nvlen; - - *nva_ptr = nghttp2_mem_malloc(mem, 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) { - p->flags = nva[i].flags; - - if (nva[i].flags & NGHTTP2_NV_FLAG_NO_COPY_NAME) { - p->name = nva[i].name; - p->namelen = nva[i].namelen; - } else { - if (nva[i].namelen) { - memcpy(data, nva[i].name, nva[i].namelen); - } - p->name = data; - p->namelen = nva[i].namelen; - data[p->namelen] = '\0'; - nghttp2_downcase(p->name, p->namelen); - data += nva[i].namelen + 1; - } - - if (nva[i].flags & NGHTTP2_NV_FLAG_NO_COPY_VALUE) { - p->value = nva[i].value; - p->valuelen = nva[i].valuelen; - } else { - if (nva[i].valuelen) { - memcpy(data, nva[i].value, nva[i].valuelen); - } - p->value = data; - p->valuelen = nva[i].valuelen; - data[p->valuelen] = '\0'; - data += nva[i].valuelen + 1; - } - - ++p; - } - return 0; -} - -int nghttp2_iv_check(const nghttp2_settings_entry *iv, size_t niv) { - size_t i; - for (i = 0; i < niv; ++i) { - switch (iv[i].settings_id) { - case NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: - break; - case NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS: - break; - case NGHTTP2_SETTINGS_ENABLE_PUSH: - if (iv[i].value != 0 && iv[i].value != 1) { - return 0; - } - break; - case NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: - if (iv[i].value > (uint32_t)NGHTTP2_MAX_WINDOW_SIZE) { - return 0; - } - break; - case NGHTTP2_SETTINGS_MAX_FRAME_SIZE: - if (iv[i].value < NGHTTP2_MAX_FRAME_SIZE_MIN || - iv[i].value > NGHTTP2_MAX_FRAME_SIZE_MAX) { - return 0; - } - break; - case NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE: - break; - case NGHTTP2_SETTINGS_ENABLE_CONNECT_PROTOCOL: - if (iv[i].value != 0 && iv[i].value != 1) { - return 0; - } - break; - } - } - return 1; -} - -static void frame_set_pad(nghttp2_buf *buf, size_t padlen, int framehd_only) { - size_t trail_padlen; - size_t newlen; - - DEBUGF("send: padlen=%zu, shift left 1 bytes\n", padlen); - - memmove(buf->pos - 1, buf->pos, NGHTTP2_FRAME_HDLEN); - - --buf->pos; - - buf->pos[4] |= NGHTTP2_FLAG_PADDED; - - newlen = (nghttp2_get_uint32(buf->pos) >> 8) + padlen; - nghttp2_put_uint32be(buf->pos, (uint32_t)((newlen << 8) + buf->pos[3])); - - if (framehd_only) { - return; - } - - trail_padlen = padlen - 1; - buf->pos[NGHTTP2_FRAME_HDLEN] = (uint8_t)trail_padlen; - - /* zero out padding */ - memset(buf->last, 0, trail_padlen); - /* extend buffers trail_padlen bytes, since we ate previous padlen - - trail_padlen byte(s) */ - buf->last += trail_padlen; -} - -int nghttp2_frame_add_pad(nghttp2_bufs *bufs, nghttp2_frame_hd *hd, - size_t padlen, int framehd_only) { - nghttp2_buf *buf; - - if (padlen == 0) { - DEBUGF("send: padlen = 0, nothing to do\n"); - - return 0; - } - - /* - * We have arranged bufs like this: - * - * 0 1 2 3 - * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 - * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ - * | |Frame header | Frame payload... : - * +-+-----------------+-------------------------------------------+ - * | |Frame header | Frame payload... : - * +-+-----------------+-------------------------------------------+ - * | |Frame header | Frame payload... : - * +-+-----------------+-------------------------------------------+ - * - * We arranged padding so that it is included in the first frame - * completely. For padded frame, we are going to adjust buf->pos of - * frame which includes padding and serialize (memmove) frame header - * in the correct position. Also extends buf->last to include - * padding. - */ - - buf = &bufs->head->buf; - - assert(nghttp2_buf_avail(buf) >= padlen - 1); - - frame_set_pad(buf, padlen, framehd_only); - - hd->length += padlen; - hd->flags |= NGHTTP2_FLAG_PADDED; - - DEBUGF("send: final payloadlen=%zu, padlen=%zu\n", hd->length, padlen); - - return 0; -} |