e33682cae2
The res_pjsip_exten_state module currently has a race condition between processing the extension state callback from the PBX core and processing the subscription shutdown callback from res_pjsip_pubsub. There is currently no synchronization between the two. This can present a problem as while the SIP subscription will remain valid the tree it points to may not. This is in particular a problem as a task to send a NOTIFY may get queued which will try to use the tree that may no longer be valid. This change does the following to fix this problem: 1. All access to the subscription tree is done within the task that sends the NOTIFY to ensure that no other thread is modifying or destroying the tree. This task executes on the serializer for the subscriptions. 2. A reference to the subscription serializer is kept to ensure it remains valid for the lifetime of the extension state subscription. 3. The NOTIFY task has been changed so it will no longer attempt to send a NOTIFY if the subscription has already been terminated. ASTERISK-25057 #close Reported by: Matt Jordan Change-Id: I0b3cd2fac5be8d9b3dc5e693aaa79846eeaf5643
44 lines
2.2 KiB
Text
44 lines
2.2 KiB
Text
{
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global:
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LINKER_SYMBOL_PREFIXast_sip_create_subscription;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_endpoint;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_serializer;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_evsub;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_dlg;
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LINKER_SYMBOL_PREFIXast_sip_subscription_accept;
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LINKER_SYMBOL_PREFIXast_sip_subscription_send_request;
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LINKER_SYMBOL_PREFIXast_sip_subscription_alloc_datastore;
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LINKER_SYMBOL_PREFIXast_sip_subscription_add_datastore;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_datastore;
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LINKER_SYMBOL_PREFIXast_sip_subscription_remove_datastore;
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LINKER_SYMBOL_PREFIXast_sip_register_subscription_handler;
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LINKER_SYMBOL_PREFIXast_sip_unregister_subscription_handler;
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LINKER_SYMBOL_PREFIXast_sip_create_publication;
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LINKER_SYMBOL_PREFIXast_sip_publication_get_endpoint;
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LINKER_SYMBOL_PREFIXast_sip_publication_get_resource;
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LINKER_SYMBOL_PREFIXast_sip_publication_get_event_configuration;
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LINKER_SYMBOL_PREFIXast_sip_publication_create_response;
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LINKER_SYMBOL_PREFIXast_sip_publication_send_response;
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LINKER_SYMBOL_PREFIXast_sip_register_publish_handler;
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LINKER_SYMBOL_PREFIXast_sip_unregister_publish_handler;
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LINKER_SYMBOL_PREFIXast_sip_publication_add_datastore;
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LINKER_SYMBOL_PREFIXast_sip_publication_get_datastore;
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LINKER_SYMBOL_PREFIXast_sip_publication_remove_datastore;
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LINKER_SYMBOL_PREFIXast_sip_publication_remove_datastore;
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LINKER_SYMBOL_PREFIXast_sip_pubsub_register_body_generator;
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LINKER_SYMBOL_PREFIXast_sip_pubsub_unregister_body_generator;
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LINKER_SYMBOL_PREFIXast_sip_pubsub_register_body_supplement;
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LINKER_SYMBOL_PREFIXast_sip_pubsub_unregister_body_supplement;
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LINKER_SYMBOL_PREFIXast_sip_pubsub_generate_body_content;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_body_type;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_body_subtype;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_resource_name;
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LINKER_SYMBOL_PREFIXast_sip_subscription_notify;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_local_uri;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_remote_uri;
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LINKER_SYMBOL_PREFIXast_sip_subscription_get_header;
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LINKER_SYMBOL_PREFIXast_sip_subscription_is_terminated;
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local:
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*;
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};
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