[RFCv2 06/17] bluetooth: List HF cards from oFono

[jprvita@xxxxxxxxx (jprvita@xxxxxxxxx)]

From: Jo?o Paulo Rechi Vita <jprvita@xxxxxxxxxxxxx>

Each Bluetooth HFP modem is represented as a Handsfree Audio Card in
oFono's Handsfree Audio Manager. This commits adds support for querying
the list of hands-free audio cards from oFono.
---
 src/modules/bluetooth/bluetooth-util.c | 70 ++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/src/modules/bluetooth/bluetooth-util.c b/src/modules/bluetooth/bluetooth-util.c
index ebf4833..0beaf9f 100644
--- a/src/modules/bluetooth/bluetooth-util.c
+++ b/src/modules/bluetooth/bluetooth-util.c
@@ -1129,6 +1129,75 @@ static void init_bluez(pa_bluetooth_discovery *y) {
     send_and_add_to_pending(y, m, get_managed_objects_reply, NULL);
 }
 
+static void hfagent_get_cards_reply(DBusPendingCall *pending, void *userdata) {
+    DBusMessage *r;
+    pa_dbus_pending *p;
+    pa_bluetooth_discovery *y;
+    DBusMessageIter i, array_i, struct_i, props_i;
+    char c;
+
+    pa_assert_se(p = userdata);
+    pa_assert_se(y = p->context_data);
+    pa_assert_se(r = dbus_pending_call_steal_reply(pending));
+
+    if (dbus_message_get_type(r) == DBUS_MESSAGE_TYPE_ERROR) {
+        pa_log_error("Failed to get a list of handsfree audio cards from ofono: %s: %s",
+                     dbus_message_get_error_name(r), pa_dbus_get_error_message(r));
+        goto finish;
+    }
+
+    dbus_message_iter_init(r, &i);
+    if ((c = dbus_message_iter_get_arg_type(&i)) != DBUS_TYPE_ARRAY) {
+        pa_log_error("Invalid arguments in GetCards() reply: expected \'a\', received \'%c\'", c);
+        goto finish;
+    }
+
+    dbus_message_iter_recurse(&i, &array_i);
+    while (dbus_message_iter_get_arg_type(&array_i) != DBUS_TYPE_INVALID) {
+        const char *path;
+
+        if ((c = dbus_message_iter_get_arg_type(&array_i)) != DBUS_TYPE_STRUCT) {
+            pa_log_error("Invalid arguments in GetCards() reply: expected \'r\', received \'%c\'", c);
+            goto finish;
+        }
+
+        dbus_message_iter_recurse(&array_i, &struct_i);
+        if ((c = dbus_message_iter_get_arg_type(&struct_i)) != DBUS_TYPE_OBJECT_PATH) {
+            pa_log_error("Invalid arguments in GetCards() reply: expected \'o\', received \'%c\'", c);
+            goto finish;
+        }
+
+        dbus_message_iter_get_basic(&struct_i, &path);
+
+        dbus_message_iter_next(&struct_i);
+        if ((c = dbus_message_iter_get_arg_type(&struct_i)) != DBUS_TYPE_ARRAY) {
+            pa_log_error("Invalid arguments in GetCards() reply: expected \'a\', received \'%c\'", c);
+            goto finish;
+        }
+
+        dbus_message_iter_recurse(&struct_i, &props_i);
+
+        pa_log("Found HF card %s", path);
+
+        dbus_message_iter_next(&array_i);
+    }
+
+finish:
+    dbus_message_unref(r);
+
+    PA_LLIST_REMOVE(pa_dbus_pending, y->pending, p);
+    pa_dbus_pending_free(p);
+}
+
+static void hfagent_get_cards(pa_bluetooth_discovery *y) {
+    DBusMessage *m;
+
+    pa_assert(y);
+
+    pa_assert_se(m = dbus_message_new_method_call("org.ofono", "/", "org.ofono.HandsfreeAudioManager", "GetCards"));
+    send_and_add_to_pending(y, m, hfagent_get_cards_reply, NULL);
+}
+
 static void hfagent_register_reply(DBusPendingCall *pending, void *userdata) {
     DBusMessage *r;
     pa_dbus_pending *p;
@@ -1146,6 +1215,7 @@ static void hfagent_register_reply(DBusPendingCall *pending, void *userdata) {
 
     y->ofono_bus_id = pa_xstrdup(dbus_message_get_sender(r));
     y->hf_cards = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
+    hfagent_get_cards(y);
 
 finish:
     dbus_message_unref(r);
-- 
1.7.11.7