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b2b_logic: saftey check on old_entity->peer #2999

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b2b_logic: saftey check on old_entity->peer #2999

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19 changes: 11 additions & 8 deletions modules/b2b_logic/bridging.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2151,16 +2151,19 @@ int b2bl_bridge_msg(struct sip_msg* msg, str* key, int entity_no, str *adv_ct)
}
old_entity->disconnected = 1;
}
if (old_entity->peer->peer == old_entity)
old_entity->peer->peer = NULL;
else
if (old_entity->peer)
{
LM_ERR("Unexpected chain: old_entity=[%p] and "
"old_entity->peer->peer=[%p]\n",
old_entity, old_entity->peer->peer);
goto error;
if (old_entity->peer->peer == old_entity)
old_entity->peer->peer = NULL;
else
{
LM_ERR("Unexpected chain: old_entity=[%p] and "
"old_entity->peer->peer=[%p]\n",
old_entity, old_entity->peer->peer);
goto error;
}
old_entity->peer = NULL;
}
old_entity->peer = NULL;

/* remove the disconected entity from the tuple */
if(0 == b2bl_drop_entity(old_entity, tuple))
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