[Asterisk-code-review] chan pjsip: Don't change formats when frame of unsupported f... (asterisk[13])

[Matt Jordan]

Matt Jordan has submitted this change and it was merged.

Change subject: chan_pjsip: Don't change formats when frame of unsupported format is received.
......................................................................


chan_pjsip: Don't change formats when frame of unsupported format is received.

Receipt of an RTP packet currently causes the formats on an PJSIP channel to
change to the format of the RTP packet. In some off-nominal cases it's possible
for this to be a format that has not been configured or negotiated. This change
makes it so only formats explicitly configured on the endpoint are allowed.

ASTERISK-25258 #close

Change-Id: If93d641fb6418a285928839300d7854cab8c1020
---
M channels/chan_pjsip.c
1 file changed, 9 insertions(+), 0 deletions(-)

Approvals:
  Richard Mudgett: Looks good to me, but someone else must approve
  Anonymous Coward #1000019: Verified
  Matt Jordan: Looks good to me, approved



diff --git a/channels/chan_pjsip.c b/channels/chan_pjsip.c
index c6a02d9..919b926 100644
--- a/channels/chan_pjsip.c
+++ b/channels/chan_pjsip.c
@@ -629,6 +629,15 @@
 		return f;
 	}
 
+	if (ast_format_cap_iscompatible_format(channel->session->endpoint->media.codecs, f->subclass.format) == AST_FORMAT_CMP_NOT_EQUAL) {
+		ast_debug(1, "Oooh, got a frame with format of %s on channel '%s' when endpoint '%s' is not configured for it\n",
+			ast_format_get_name(f->subclass.format), ast_channel_name(ast),
+			ast_sorcery_object_get_id(channel->session->endpoint));
+
+		ast_frfree(f);
+		return &ast_null_frame;
+	}
+
 	if (channel->session->dsp) {
 		f = ast_dsp_process(ast, channel->session->dsp, f);
 

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Gerrit-MessageType: merged
Gerrit-Change-Id: If93d641fb6418a285928839300d7854cab8c1020
Gerrit-PatchSet: 3
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: Joshua Colp <jcolp at digium.com>
Gerrit-Reviewer: Anonymous Coward #1000019
Gerrit-Reviewer: Joshua Colp <jcolp at digium.com>
Gerrit-Reviewer: Matt Jordan <mjordan at digium.com>
Gerrit-Reviewer: Richard Mudgett <rmudgett at digium.com>