<p>Joshua Colp <strong>submitted</strong> this change.</p><p><a href="https://gerrit.asterisk.org/c/asterisk/+/15656">View Change</a></p><div style="white-space:pre-wrap">Approvals:
Joshua Colp: Looks good to me, but someone else must approve; Approved for Submit
Kevin Harwell: Looks good to me, but someone else must approve
George Joseph: Looks good to me, approved
</div><pre style="font-family: monospace,monospace; white-space: pre-wrap;">res_pjsip_session: Make reschedule_reinvite check for NULL topologies<br><br>When the check for equal topologies was added to reschedule_reinvite()<br>it was assumed that both the pending and active media states would<br>actually have non-NULL topologies. We since discovered this isn't<br>the case.<br><br>We now only test for equal topologies if both media states have<br>non-NULL topologies. The logic had to be rearranged a bit to make<br>sure that we cloned the media states if their topologies were<br>non-NULL but weren't equal.<br><br>ASTERISK-29215<br><br>Change-Id: I61313cca7fc571144338aac826091791b87b6e17<br>---<br>M res/res_pjsip_session.c<br>1 file changed, 25 insertions(+), 3 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/res/res_pjsip_session.c b/res/res_pjsip_session.c</span><br><span>index 412c953..0753d8e 100644</span><br><span>--- a/res/res_pjsip_session.c</span><br><span>+++ b/res/res_pjsip_session.c</span><br><span>@@ -4226,18 +4226,40 @@</span><br><span> struct ast_sip_session_media_state *pending_media_state = NULL;</span><br><span> struct ast_sip_session_media_state *active_media_state = NULL;</span><br><span> const char *session_name = ast_sip_session_get_name(session);</span><br><span style="color: hsl(120, 100%, 40%);">+ int use_pending = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+ int use_active = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span> SCOPE_ENTER(3, "%s\n", session_name);</span><br><span> </span><br><span style="color: hsl(0, 100%, 40%);">- /* If the two media state topologies are the same this means that the session refresh request</span><br><span style="color: hsl(120, 100%, 40%);">+ /*</span><br><span style="color: hsl(120, 100%, 40%);">+ * If the two media state topologies are the same this means that the session refresh request</span><br><span> * did not specify a desired topology, so it does not care. If that is the case we don't even</span><br><span style="color: hsl(0, 100%, 40%);">- * pass one in here resulting in the current topology being used.</span><br><span style="color: hsl(120, 100%, 40%);">+ * pass one in here resulting in the current topology being used. It's possible though that</span><br><span style="color: hsl(120, 100%, 40%);">+ * either one of the topologies could be NULL so we have to test for that before we check for</span><br><span style="color: hsl(120, 100%, 40%);">+ * equality.</span><br><span> */</span><br><span style="color: hsl(0, 100%, 40%);">- if (!ast_stream_topology_equal(session->active_media_state->topology, session->pending_media_state->topology)) {</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /* We only want to clone a media state if its topology is not null */</span><br><span style="color: hsl(120, 100%, 40%);">+ use_pending = session->pending_media_state->topology != NULL;</span><br><span style="color: hsl(120, 100%, 40%);">+ use_active = session->active_media_state->topology != NULL;</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ /*</span><br><span style="color: hsl(120, 100%, 40%);">+ * If both media states have topologies, we can test for equality. If they're equal we're not going to</span><br><span style="color: hsl(120, 100%, 40%);">+ * clone either states.</span><br><span style="color: hsl(120, 100%, 40%);">+ */</span><br><span style="color: hsl(120, 100%, 40%);">+ if (use_pending && use_active && ast_stream_topology_equal(session->active_media_state->topology, session->pending_media_state->topology)) {</span><br><span style="color: hsl(120, 100%, 40%);">+ use_pending = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+ use_active = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+ if (use_pending) {</span><br><span> pending_media_state = ast_sip_session_media_state_clone(session->pending_media_state);</span><br><span> if (!pending_media_state) {</span><br><span> SCOPE_EXIT_LOG_RTN(LOG_ERROR, "%s: Failed to clone pending media state\n", session_name);</span><br><span> }</span><br><span style="color: hsl(120, 100%, 40%);">+ }</span><br><span> </span><br><span style="color: hsl(120, 100%, 40%);">+ if (use_active) {</span><br><span> active_media_state = ast_sip_session_media_state_clone(session->active_media_state);</span><br><span> if (!active_media_state) {</span><br><span> ast_sip_session_media_state_free(pending_media_state);</span><br><span></span><br></pre><p>To view, visit <a href="https://gerrit.asterisk.org/c/asterisk/+/15656">change 15656</a>. 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<div style="display:none"> Gerrit-Project: asterisk </div>
<div style="display:none"> Gerrit-Branch: 16.17 </div>
<div style="display:none"> Gerrit-Change-Id: I61313cca7fc571144338aac826091791b87b6e17 </div>
<div style="display:none"> Gerrit-Change-Number: 15656 </div>
<div style="display:none"> Gerrit-PatchSet: 3 </div>
<div style="display:none"> Gerrit-Owner: George Joseph <gjoseph@digium.com> </div>
<div style="display:none"> Gerrit-Reviewer: Friendly Automation </div>
<div style="display:none"> Gerrit-Reviewer: George Joseph <gjoseph@digium.com> </div>
<div style="display:none"> Gerrit-Reviewer: Joshua Colp <jcolp@sangoma.com> </div>
<div style="display:none"> Gerrit-Reviewer: Kevin Harwell <kharwell@digium.com> </div>
<div style="display:none"> Gerrit-MessageType: merged </div>