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-rw-r--r--plugins/ice/src/dtls_srtp.vala11
1 files changed, 9 insertions, 2 deletions
diff --git a/plugins/ice/src/dtls_srtp.vala b/plugins/ice/src/dtls_srtp.vala
index 6987a0d2..e2817ef3 100644
--- a/plugins/ice/src/dtls_srtp.vala
+++ b/plugins/ice/src/dtls_srtp.vala
@@ -38,7 +38,11 @@ public class Handler {
}
public uint8[]? process_incoming_data(uint component_id, uint8[] data) throws Crypto.Error {
- if (srtp_session.has_decrypt) {
+ if (data[0] >= 128) {
+ if (!srtp_session.has_decrypt) {
+ debug("Received data before SRTP session is ready, dropping.");
+ return null;
+ }
if (component_id == 1) {
if (data.length >= 2 && data[1] >= 192 && data[1] < 224) {
return srtp_session.decrypt_rtcp(data);
@@ -46,9 +50,12 @@ public class Handler {
return srtp_session.decrypt_rtp(data);
}
if (component_id == 2) return srtp_session.decrypt_rtcp(data);
- } else if (component_id == 1 && (data[0] >= 20 && data[0] <= 63)) {
+ }
+ if (component_id == 1 && data.length >= 1 && (data[0] >= 20 && data[0] < 64)) {
on_data_rec(data);
+ return null;
}
+ debug("Dropping unknown data from component %u", component_id);
return null;
}