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res_pjsip: Fix contact refleak on stateful responses.

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When sending a stateful response, creation of the transaction can fail,
most commonly because we are trying to create a transaction from a
retransmitted request. When creation of the transaction fails, we end up
leaking a reference to a contact that was bumped when the response was
created.

This patch adds the missing deref and fixes the reference leak.

Change-Id: I2f97ad512aeb1b17e87ca29ae0abacb4d6395f07
This commit is contained in:
Mark Michelson
2015-09-02 17:26:14 -05:00
parent d58c8d73af
commit ad9cb6c2ce
1 changed files with 8 additions and 0 deletions
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8
res/res_pjsip.c
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@@ -3682,6 +3682,14 @@ int ast_sip_send_stateful_response(pjsip_rx_data *rdata, pjsip_tx_data *tdata, s
pjsip_transaction *tsx;
if (pjsip_tsx_create_uas(NULL, rdata, &tsx) != PJ_SUCCESS) {
struct ast_sip_contact *contact;
/* ast_sip_create_response bumps the refcount of the contact and adds it to the tdata.
* We'll leak that reference if we don't get rid of it here.
*/
contact = ast_sip_mod_data_get(tdata->mod_data, supplement_module.id, MOD_DATA_CONTACT);
ao2_cleanup(contact);
ast_sip_mod_data_set(tdata->pool, tdata->mod_data, supplement_module.id, MOD_DATA_CONTACT, NULL);
pjsip_tx_data_dec_ref(tdata);
return -1;
}