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app_dial: Add option "j" to preserve initial stream topology of caller 

Resolves: #462

UserNote: The option "j" is now available for the Dial application which
uses the initial stream topology of the caller to create the outgoing
channels.
This commit is contained in:
Maximilian Fridrich 2023-11-30 09:57:56 +01:00
parent 44f1522907
commit dcf58ee88f
1 changed files with 32 additions and 1 deletions
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33
apps/app_dial.c
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@ -242,6 +242,10 @@
<para>Asterisk will ignore any connected line update requests or any redirecting party
update requests it may receive on this dial attempt.</para>
</option>
<option name="j">
<para>Use the initial stream topology of the caller for outgoing channels, even if the caller topology has changed.</para>
<para>NOTE: For this option to work, it has to be present in all invocations of Dial that the caller channel goes through.</para>
</option>
<option name="k">
<para>Allow the called party to enable parking of the call by sending
the DTMF sequence defined for call parking in <filename>features.conf</filename>.</para>
@ -750,6 +754,7 @@ enum {
#define OPT_RING_WITH_EARLY_MEDIA (1LLU << 43)
#define OPT_HANGUPCAUSE (1LLU << 44)
#define OPT_HEARPULSING (1LLU << 45)
#define OPT_TOPOLOGY_PRESERVE (1LLU << 46)
enum {
OPT_ARG_ANNOUNCE = 0,
@ -795,6 +800,7 @@ AST_APP_OPTIONS(dial_exec_options, BEGIN_OPTIONS
AST_APP_OPTION('H', OPT_CALLER_HANGUP),
AST_APP_OPTION('i', OPT_IGNORE_FORWARDING),
AST_APP_OPTION('I', OPT_IGNORE_CONNECTEDLINE),
AST_APP_OPTION('j', OPT_TOPOLOGY_PRESERVE),
AST_APP_OPTION('k', OPT_CALLEE_PARK),
AST_APP_OPTION('K', OPT_CALLER_PARK),
AST_APP_OPTION_ARG('L', OPT_DURATION_LIMIT, OPT_ARG_DURATION_LIMIT),
@ -855,6 +861,16 @@ struct chanlist {
AST_LIST_HEAD_NOLOCK(dial_head, chanlist);
static void topology_ds_destroy(void *data) {
struct ast_stream_topology *top = data;
ast_stream_topology_free(top);
}
static const struct ast_datastore_info topology_ds_info = {
.type = "app_dial_topology_preserve",
.destroy = topology_ds_destroy,
};
static int detect_disconnect(struct ast_channel *chan, char code, struct ast_str **featurecode);
static void chanlist_free(struct chanlist *outgoing)
@ -2389,6 +2405,7 @@ static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast
*/
struct ast_party_caller caller;
int max_forwards;
struct ast_datastore *topology_ds = NULL;
SCOPE_ENTER(1, "%s: Data: %s\n", ast_channel_name(chan), data);
/* Reset all DIAL variables back to blank, to prevent confusion (in case we don't reset all of them). */
@ -2690,7 +2707,21 @@ static int dial_exec_full(struct ast_channel *chan, const char *data, struct ast
*/
ast_party_connected_line_copy(&tmp->connected, ast_channel_connected(chan));
topology = ast_stream_topology_clone(ast_channel_get_stream_topology(chan));
if (ast_test_flag64(&opts, OPT_TOPOLOGY_PRESERVE)) {
topology_ds = ast_channel_datastore_find(chan, &topology_ds_info, NULL);
if (!topology_ds && (topology_ds = ast_datastore_alloc(&topology_ds_info, NULL))) {
topology_ds->data = ast_stream_topology_clone(ast_channel_get_stream_topology(chan));
ast_channel_datastore_add(chan, topology_ds);
}
}
if (topology_ds) {
ao2_ref(topology_ds->data, +1);
topology = topology_ds->data;
} else {
topology = ast_stream_topology_clone(ast_channel_get_stream_topology(chan));
}
ast_channel_unlock(chan);