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client: Add read command

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This command can be used to read attributes, it only works if an
attribute has been selected with select-attribute.
This commit is contained in:
Luiz Augusto von Dentz 2015-02-04 14:57:51 +02:00
parent 044ff5e4cd
commit 838bdbce23
3 changed files with 72 additions and 0 deletions
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59
client/gatt.c
View File

@ -326,3 +326,62 @@ char *gatt_attribute_generator(const char *text, int state)
return attribute_generator(text, state, list);
}
static void read_reply(DBusMessage *message, void *user_data)
{
DBusError error;
DBusMessageIter iter, array;
uint8_t *value;
int len;
dbus_error_init(&error);
if (dbus_set_error_from_message(&error, message) == TRUE) {
rl_printf("Failed to read: %s\n", error.name);
dbus_error_free(&error);
return;
}
dbus_message_iter_init(message, &iter);
if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY) {
rl_printf("Invalid response to read\n");
return;
}
dbus_message_iter_recurse(&iter, &array);
dbus_message_iter_get_fixed_array(&array, &value, &len);
if (len < 0) {
rl_printf("Unable to parse value\n");
return;
}
rl_hexdump(value, len);
}
static void read_attribute(GDBusProxy *proxy)
{
if (g_dbus_proxy_method_call(proxy, "ReadValue", NULL, read_reply,
NULL, NULL) == FALSE) {
rl_printf("Failed to read\n");
return;
}
rl_printf("Attempting to read %s\n", g_dbus_proxy_get_path(proxy));
}
void gatt_read_attribute(GDBusProxy *proxy)
{
const char *iface;
iface = g_dbus_proxy_get_interface(proxy);
if (!strcmp(iface, "org.bluez.GattCharacteristic1") ||
!strcmp(iface, "org.bluez.GattDescriptor1")) {
read_attribute(proxy);
return;
}
rl_printf("Unable to read attribute %s\n",
g_dbus_proxy_get_path(proxy));
}

2
client/gatt.h
View File

@ -33,3 +33,5 @@ void gatt_remove_descriptor(GDBusProxy *proxy);
void gatt_list_attributes(const char *device);
GDBusProxy *gatt_select_attribute(const char *path);
char *gatt_attribute_generator(const char *text, int state);
void gatt_read_attribute(GDBusProxy *proxy);

11
client/main.c
View File

@ -1276,6 +1276,16 @@ static void cmd_attribute_info(const char *arg)
}
}
static void cmd_read(const char *arg)
{
if (!default_attr) {
rl_printf("No attribute selected\n");
return;
}
gatt_read_attribute(default_attr);
}
static void cmd_version(const char *arg)
{
rl_printf("Version %s\n", VERSION);
@ -1405,6 +1415,7 @@ static const struct {
"Select attribute", attribute_generator },
{ "attribute-info", "[attribute]", cmd_attribute_info,
"Select attribute", attribute_generator },
{ "read", NULL, cmd_read, "Read attribute value" },
{ "version", NULL, cmd_version, "Display version" },
{ "quit", NULL, cmd_quit, "Quit program" },
{ "exit", NULL, cmd_quit },