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core_local: Local calls are always secure.

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In a Dialplan, the channel drivers 'chan_sip' and 'chan_iax2' support
the channel items 'secure_bridge_media' and 'secure_bridge_signaling'.
That way, a channel can be forced to use encryption even if not
specified in its configuration.

However, when the Local Proxy kicks in, for example, in case of a
forwarding (SIP status 302), Local Proxy stated it does not know those
items. Consequently, such a call could not be proxied how clever your
Dialplan was. Because local calls within Asterisk are always secure,
Local Proxy accepts such a request now.

ASTERISK-22920

Change-Id: I4c143bb70f686790953cc04c5a4b810bbb03636c
This commit is contained in:
Alexander Traud
2020-04-27 17:28:01 +02:00
committed by Joshua Colp
parent 35f7e24ebc
commit 18cc090761
1 changed files with 13 additions and 1 deletions
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14
main/core_local.c
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@@ -144,6 +144,7 @@ static int local_devicestate(const char *data);
static void local_optimization_started_cb(struct ast_unreal_pvt *base, struct ast_channel *source, static void local_optimization_started_cb(struct ast_unreal_pvt *base, struct ast_channel *source,
enum ast_unreal_channel_indicator dest, unsigned int id); enum ast_unreal_channel_indicator dest, unsigned int id);
static void local_optimization_finished_cb(struct ast_unreal_pvt *base, int success, unsigned int id); static void local_optimization_finished_cb(struct ast_unreal_pvt *base, int success, unsigned int id);
static int local_setoption(struct ast_channel *chan, int option, void *data, int datalen);
static struct ast_manager_event_blob *local_message_to_ami(struct stasis_message *msg); static struct ast_manager_event_blob *local_message_to_ami(struct stasis_message *msg);
@@ -187,7 +188,7 @@ static struct ast_channel_tech local_tech = {
.send_text = ast_unreal_sendtext, .send_text = ast_unreal_sendtext,
.devicestate = local_devicestate, .devicestate = local_devicestate,
.queryoption = ast_unreal_queryoption, .queryoption = ast_unreal_queryoption,
.setoption = ast_unreal_setoption, .setoption = local_setoption,
}; };
/*! What to do with the ;2 channel when ast_call() happens. */ /*! What to do with the ;2 channel when ast_call() happens. */
@@ -1108,3 +1109,14 @@ int ast_local_init(void)
ast_register_cleanup(local_shutdown); ast_register_cleanup(local_shutdown);
return 0; return 0;
} }
int local_setoption(struct ast_channel *ast, int option, void *data, int datalen)
{
switch (option) {
case AST_OPTION_SECURE_SIGNALING:
case AST_OPTION_SECURE_MEDIA:
return 0; /* local calls (like forwardings) are secure always */
default:
return ast_unreal_setoption(ast, option, data, datalen);
}
}