int WPACKET_init_len(WPACKET *pkt, BUF_MEM *buf, size_t lenbytes)
{
unsigned char *lenchars;
/* Internal API, so should not fail */
assert(buf != NULL);
if (buf == NULL)
return 0;
pkt->buf = buf;
pkt->curr = 0;
pkt->written = 0;
pkt->maxsize = maxmaxsize(lenbytes);
pkt->subs = OPENSSL_zalloc(sizeof(*pkt->subs));
if (pkt->subs == NULL)
return 0;
if (lenbytes == 0)
return 1;
pkt->subs->pwritten = lenbytes;
pkt->subs->lenbytes = lenbytes;
if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars)) {
OPENSSL_free(pkt->subs);
pkt->subs = NULL;
return 0;
}
pkt->subs->packet_len = lenchars - (unsigned char *)pkt->buf->data;
return 1;
}
int WPACKET_start_sub_packet_len__(WPACKET *pkt, size_t lenbytes)
{
WPACKET_SUB *sub;
unsigned char *lenchars;
/* Internal API, so should not fail */
assert(pkt->subs != NULL);
if (pkt->subs == NULL)
return 0;
sub = OPENSSL_zalloc(sizeof(*sub));
if (sub == NULL)
return 0;
sub->parent = pkt->subs;
pkt->subs = sub;
sub->pwritten = pkt->written + lenbytes;
sub->lenbytes = lenbytes;
if (lenbytes == 0) {
sub->packet_len = 0;
return 1;
}
if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars))
return 0;
/* Convert to an offset in case the underlying BUF_MEM gets realloc'd */
sub->packet_len = lenchars - (unsigned char *)pkt->buf->data;
return 1;
}
static int wpacket_intern_init_len(WPACKET *pkt, size_t lenbytes)
{
unsigned char *lenchars;
pkt->curr = 0;
pkt->written = 0;
pkt->subs = OPENSSL_zalloc(sizeof(*pkt->subs));
if (pkt->subs == NULL)
return 0;
if (lenbytes == 0)
return 1;
pkt->subs->pwritten = lenbytes;
pkt->subs->lenbytes = lenbytes;
if (!WPACKET_allocate_bytes(pkt, lenbytes, &lenchars)) {
OPENSSL_free(pkt->subs);
pkt->subs = NULL;
return 0;
}
pkt->subs->packet_len = lenchars - GETBUF(pkt);
return 1;
}
int tls_construct_ctos_status_request(SSL *s, WPACKET *pkt, int *al)
{
int i;
if (s->tlsext_status_type != TLSEXT_STATUSTYPE_ocsp)
return 1;
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_status_request)
/* Sub-packet for status request extension */
|| !WPACKET_start_sub_packet_u16(pkt)
|| !WPACKET_put_bytes_u8(pkt, TLSEXT_STATUSTYPE_ocsp)
/* Sub-packet for the ids */
|| !WPACKET_start_sub_packet_u16(pkt)) {
SSLerr(SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, ERR_R_INTERNAL_ERROR);
return 0;
}
for (i = 0; i < sk_OCSP_RESPID_num(s->tlsext_ocsp_ids); i++) {
unsigned char *idbytes;
OCSP_RESPID *id = sk_OCSP_RESPID_value(s->tlsext_ocsp_ids, i);
int idlen = i2d_OCSP_RESPID(id, NULL);
if (idlen <= 0
/* Sub-packet for an individual id */
|| !WPACKET_sub_allocate_bytes_u16(pkt, idlen, &idbytes)
|| i2d_OCSP_RESPID(id, &idbytes) != idlen) {
SSLerr(SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST,
ERR_R_INTERNAL_ERROR);
return 0;
}
}
if (!WPACKET_close(pkt)
|| !WPACKET_start_sub_packet_u16(pkt)) {
SSLerr(SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, ERR_R_INTERNAL_ERROR);
return 0;
}
if (s->tlsext_ocsp_exts) {
unsigned char *extbytes;
int extlen = i2d_X509_EXTENSIONS(s->tlsext_ocsp_exts, NULL);
if (extlen < 0) {
SSLerr(SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST,
ERR_R_INTERNAL_ERROR);
return 0;
}
if (!WPACKET_allocate_bytes(pkt, extlen, &extbytes)
|| i2d_X509_EXTENSIONS(s->tlsext_ocsp_exts, &extbytes)
!= extlen) {
SSLerr(SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST,
ERR_R_INTERNAL_ERROR);
return 0;
}
}
if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) {
SSLerr(SSL_F_TLS_CONSTRUCT_CTOS_STATUS_REQUEST, ERR_R_INTERNAL_ERROR);
return 0;
}
return 1;
}
int WPACKET_sub_allocate_bytes__(WPACKET *pkt, size_t len,
unsigned char **allocbytes, size_t lenbytes)
{
if (!WPACKET_start_sub_packet_len__(pkt, lenbytes)
|| !WPACKET_allocate_bytes(pkt, len, allocbytes)
|| !WPACKET_close(pkt))
return 0;
return 1;
}
int WPACKET_put_bytes__(WPACKET *pkt, unsigned int val, size_t size)
{
unsigned char *data;
/* Internal API, so should not fail */
if (!ossl_assert(size <= sizeof(unsigned int))
|| !WPACKET_allocate_bytes(pkt, size, &data)
|| !put_value(data, val, size))
return 0;
return 1;
}
int WPACKET_memcpy(WPACKET *pkt, const void *src, size_t len)
{
unsigned char *dest;
if (len == 0)
return 1;
if (!WPACKET_allocate_bytes(pkt, len, &dest))
return 0;
memcpy(dest, src, len);
return 1;
}
int WPACKET_memset(WPACKET *pkt, int ch, size_t len)
{
unsigned char *dest;
if (len == 0)
return 1;
if (!WPACKET_allocate_bytes(pkt, len, &dest))
return 0;
memset(dest, ch, len);
return 1;
}
