static bool recv_handler(struct sa *src, struct mbuf *mb, void *arg)
{
struct menc_st *st = arg;
err_status_t e;
int len;
(void)src;
if (!st->use_srtp || !is_rtp_or_rtcp(mb))
return false;
len = (int)mbuf_get_left(mb);
if (is_rtcp_packet(mb)) {
e = srtp_unprotect_rtcp(st->srtp_rx, mbuf_buf(mb), &len);
}
else {
e = srtp_unprotect(st->srtp_rx, mbuf_buf(mb), &len);
}
if (e != err_status_ok) {
DEBUG_WARNING("recv: failed to unprotect %s-packet"
" with %d bytes (%H)\n",
is_rtcp_packet(mb) ? "RTCP" : "RTP",
len, errstatus_print, e);
return true; /* error - drop packet */
}
mbuf_set_end(mb, mb->pos + len);
return false; /* continue processing */
}
static bool recv_handler(struct sa *src, struct mbuf *mb, void *arg)
{
struct menc_st *st = arg;
size_t len = mbuf_get_left(mb);
int err = 0;
(void)src;
if (!st->got_sdp)
return true; /* drop the packet */
if (!st->use_srtp || !is_rtp_or_rtcp(mb))
return false;
if (is_rtcp_packet(mb)) {
err = srtcp_decrypt(st->srtp_rx, mb);
if (err) {
warning("srtp: failed to decrypt RTCP packet"
" with %zu bytes (%m)\n", len, err);
}
}
else {
err = srtp_decrypt(st->srtp_rx, mb);
if (err) {
warning("srtp: failed to decrypt RTP packet"
" with %zu bytes (%m)\n", len, err);
}
}
return err ? true : false;
}
static bool send_handler(int *err, struct sa *dst, struct mbuf *mb, void *arg)
{
struct menc_st *st = arg;
size_t len = mbuf_get_left(mb);
int lerr = 0;
(void)dst;
if (!st->use_srtp || !is_rtp_or_rtcp(mb))
return false;
if (is_rtcp_packet(mb)) {
lerr = srtcp_encrypt(st->srtp_tx, mb);
}
else {
lerr = srtp_encrypt(st->srtp_tx, mb);
}
if (lerr) {
warning("srtp: failed to encrypt %s-packet"
" with %zu bytes (%m)\n",
is_rtcp_packet(mb) ? "RTCP" : "RTP",
len, lerr);
*err = lerr;
return false;
}
return false; /* continue processing */
}
static bool send_handler(int *err, struct sa *dst, struct mbuf *mb, void *arg)
{
struct menc_st *st = arg;
err_status_t e;
int len;
(void)dst;
if (!st->use_srtp || !is_rtp_or_rtcp(mb))
return false;
len = (int)mbuf_get_left(mb);
if (mbuf_get_space(mb) < ((size_t)len + SRTP_MAX_TRAILER_LEN)) {
mbuf_resize(mb, mb->pos + len + SRTP_MAX_TRAILER_LEN);
}
if (is_rtcp_packet(mb)) {
e = srtp_protect_rtcp(st->srtp_tx, mbuf_buf(mb), &len);
}
else {
e = srtp_protect(st->srtp_tx, mbuf_buf(mb), &len);
}
if (err_status_ok != e) {
DEBUG_WARNING("send: failed to protect %s-packet"
" with %d bytes (%H)\n",
is_rtcp_packet(mb) ? "RTCP" : "RTP",
len, errstatus_print, e);
*err = EPROTO;
return false;
}
mbuf_set_end(mb, mb->pos + len);
return false; /* continue processing */
}
