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/*
* nghttp3
*
* Copyright (c) 2019 nghttp3 contributors
* Copyright (c) 2013 nghttp2 contributors
*
* 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 "nghttp3_frame.h"
#include <string.h>
#include <assert.h>
#include "nghttp3_conv.h"
#include "nghttp3_str.h"
uint8_t *nghttp3_frame_write_hd(uint8_t *p, const nghttp3_frame_hd *hd) {
p = nghttp3_put_varint(p, hd->type);
p = nghttp3_put_varint(p, hd->length);
return p;
}
size_t nghttp3_frame_write_hd_len(const nghttp3_frame_hd *hd) {
return nghttp3_put_varintlen(hd->type) + nghttp3_put_varintlen(hd->length);
}
uint8_t *nghttp3_frame_write_settings(uint8_t *p,
const nghttp3_frame_settings *fr) {
size_t i;
p = nghttp3_frame_write_hd(p, &fr->hd);
for (i = 0; i < fr->niv; ++i) {
p = nghttp3_put_varint(p, (int64_t)fr->iv[i].id);
p = nghttp3_put_varint(p, (int64_t)fr->iv[i].value);
}
return p;
}
size_t nghttp3_frame_write_settings_len(int64_t *ppayloadlen,
const nghttp3_frame_settings *fr) {
size_t payloadlen = 0;
size_t i;
for (i = 0; i < fr->niv; ++i) {
payloadlen += nghttp3_put_varintlen((int64_t)fr->iv[i].id) +
nghttp3_put_varintlen((int64_t)fr->iv[i].value);
}
*ppayloadlen = (int64_t)payloadlen;
return nghttp3_put_varintlen(NGHTTP3_FRAME_SETTINGS) +
nghttp3_put_varintlen((int64_t)payloadlen) + payloadlen;
}
uint8_t *nghttp3_frame_write_goaway(uint8_t *p,
const nghttp3_frame_goaway *fr) {
p = nghttp3_frame_write_hd(p, &fr->hd);
p = nghttp3_put_varint(p, fr->id);
return p;
}
size_t nghttp3_frame_write_goaway_len(int64_t *ppayloadlen,
const nghttp3_frame_goaway *fr) {
size_t payloadlen = nghttp3_put_varintlen(fr->id);
*ppayloadlen = (int64_t)payloadlen;
return nghttp3_put_varintlen(NGHTTP3_FRAME_GOAWAY) +
nghttp3_put_varintlen((int64_t)payloadlen) + payloadlen;
}
uint8_t *
nghttp3_frame_write_priority_update(uint8_t *p,
const nghttp3_frame_priority_update *fr) {
p = nghttp3_frame_write_hd(p, &fr->hd);
p = nghttp3_put_varint(p, fr->pri_elem_id);
if (fr->datalen) {
p = nghttp3_cpymem(p, fr->data, fr->datalen);
}
return p;
}
size_t nghttp3_frame_write_priority_update_len(
int64_t *ppayloadlen, const nghttp3_frame_priority_update *fr) {
size_t payloadlen = nghttp3_put_varintlen(fr->pri_elem_id) + fr->datalen;
*ppayloadlen = (int64_t)payloadlen;
return nghttp3_put_varintlen(fr->hd.type) +
nghttp3_put_varintlen((int64_t)payloadlen) + payloadlen;
}
int nghttp3_nva_copy(nghttp3_nv **pnva, const nghttp3_nv *nva, size_t nvlen,
const nghttp3_mem *mem) {
size_t i;
uint8_t *data = NULL;
size_t buflen = 0;
nghttp3_nv *p;
if (nvlen == 0) {
*pnva = NULL;
return 0;
}
for (i = 0; i < nvlen; ++i) {
/* + 1 for null-termination */
if ((nva[i].flags & NGHTTP3_NV_FLAG_NO_COPY_NAME) == 0) {
buflen += nva[i].namelen + 1;
}
if ((nva[i].flags & NGHTTP3_NV_FLAG_NO_COPY_VALUE) == 0) {
buflen += nva[i].valuelen + 1;
}
}
buflen += sizeof(nghttp3_nv) * nvlen;
*pnva = nghttp3_mem_malloc(mem, buflen);
if (*pnva == NULL) {
return NGHTTP3_ERR_NOMEM;
}
p = *pnva;
data = (uint8_t *)(*pnva) + sizeof(nghttp3_nv) * nvlen;
for (i = 0; i < nvlen; ++i) {
p->flags = nva[i].flags;
if (nva[i].flags & NGHTTP3_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);
nghttp3_downcase(data, nva[i].namelen);
}
p->name = data;
p->namelen = nva[i].namelen;
data[p->namelen] = '\0';
data += nva[i].namelen + 1;
}
if (nva[i].flags & NGHTTP3_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;
}
void nghttp3_nva_del(nghttp3_nv *nva, const nghttp3_mem *mem) {
nghttp3_mem_free(mem, nva);
}
void nghttp3_frame_headers_free(nghttp3_frame_headers *fr,
const nghttp3_mem *mem) {
if (fr == NULL) {
return;
}
nghttp3_nva_del(fr->nva, mem);
}
void nghttp3_frame_priority_update_free(nghttp3_frame_priority_update *fr,
const nghttp3_mem *mem) {
if (fr == NULL) {
return;
}
nghttp3_mem_free(mem, fr->data);
}
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