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apis.cpp
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apis.cpp
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#include "JSObject.h"
#include "apis.h"
#include "exceptions.h"
#include "config.pb.h"
DeviceAPI::DeviceAPI(const DeviceDescriptor &device_) :
device(device_)
{
registerAttribute("id", device.serial_number(), true);
registerAttribute("vendorId", utils::hex_encode(device.vendor_id()), true);
registerAttribute("productId", utils::hex_encode(device.product_id()), true);
registerAttribute("path", device.path(), true);
}
PluginAPI::PluginAPI(const BitcoinTrezorPluginPtr &plugin,
const FB::BrowserHostPtr &host) :
_plugin(plugin),
_host(host)
{
registerAttribute("version", FBSTRING_PLUGIN_VERSION, true);
registerMethod("call", make_method(this, &PluginAPI::call));
registerMethod("close", make_method(this, &PluginAPI::close));
registerMethod("devices", make_method(this, &PluginAPI::devices));
registerMethod("configure", make_method(this, &PluginAPI::configure));
registerMethod("deriveChildNode", make_method(this, &PluginAPI::derive_child_node));
}
/// Gets a reference to the plugin that was passed in when the object
/// was created. If the plugin has already been released then this
/// will throw a FB::script_error that will be translated into a
/// javascript exception in the page.
BitcoinTrezorPluginPtr PluginAPI::acquire_plugin()
{
BitcoinTrezorPluginPtr plugin(_plugin.lock());
if (!plugin)
throw FB::script_error("The plugin is invalid");
return plugin;
}
/// Loads configuration from a serialized and signed Protobuf
/// Configuration message.
/// Unauthenticated.
void PluginAPI::configure(const std::string &config_str_hex)
{
try {
const std::string config_str = utils::hex_decode(config_str_hex);
const uint8_t *config_buf = (const uint8_t *)config_str.c_str();
const size_t config_len = config_str.size();
bool verified = false;
if (config_len >= utils::SIGNATURE_LENGTH)
verified = utils::signature_verify(config_buf,
config_buf + utils::SIGNATURE_LENGTH,
config_len - utils::SIGNATURE_LENGTH);
if (!verified) {
FBLOG_ERROR("configure()", "Signature verification failed");
throw ConfigurationError("Signature verification failed");
}
Configuration config;
config.ParseFromArray(config_buf + utils::SIGNATURE_LENGTH,
config_len - utils::SIGNATURE_LENGTH);
acquire_plugin()->configure(config);
} catch (const std::exception &e) {
FBLOG_ERROR("configure()", "Exception caught");
FBLOG_ERROR("configure()", e.what());
throw FB::script_error(e.what());
}
}
/// Lists allowed device objects.
/// Authentication required.
/// Returns array of DeviceAPI.
std::vector<FB::JSAPIPtr> PluginAPI::devices()
{
if (!acquire_plugin()->authenticate()) {
FBLOG_ERROR("get_devices()", "URL not allowed");
throw ConfigurationError("URL not allowed");
}
try {
std::vector<DeviceDescriptor> devices = acquire_plugin()->enumerate();
std::vector<FB::JSAPIPtr> result;
for (size_t i = 0; i < devices.size(); i++)
result.push_back(boost::make_shared<DeviceAPI>(devices[i]));
return result;
} catch (const std::exception &e) {
FBLOG_ERROR("get_devices()", "Exception caught");
FBLOG_ERROR("get_devices()", e.what());
throw FB::script_error(e.what());
}
}
/// BIP32 PubKey derivation
FB::VariantMap PluginAPI::derive_child_node(const FB::VariantMap &node_map,
unsigned int index)
{
try {
std::auto_ptr<PB::Message> node_msg;
HDNode node;
node_msg = create_message("HDNodeType");
message_from_map(*node_msg, node_map);
message_to_hdnode(*node_msg, node);
hdnode_public_ckd(&node, index);
message_from_hdnode(*node_msg, node);
return message_to_map(*node_msg);
} catch (const std::exception &e) {
FBLOG_ERROR("hdnode_public_ckd()", "Exception caught");
FBLOG_ERROR("hdnode_public_ckd()", e.what());
throw FB::script_error(e.what());
}
}
/// Calls the device.
void PluginAPI::call(const FB::JSAPIPtr &device,
bool use_timeout,
const std::string &type_name,
const FB::VariantMap &message_map,
const FB::JSObjectPtr &callbacks)
{
try {
FBLOG_INFO("call()", "Calling device");
acquire_plugin()
->communicator(boost::static_pointer_cast<DeviceAPI>(device)->device)
->call(use_timeout, type_name, message_map, callbacks);
} catch (const std::exception &e) {
FBLOG_ERROR("call()", "Exception caught");
FBLOG_ERROR("call()", e.what());
callbacks->InvokeAsync("error", FB::variant_list_of(e.what()));
}
}
/// Closes the device.
void PluginAPI::close(const FB::JSAPIPtr &device,
const FB::JSObjectPtr &callbacks)
{
try {
FBLOG_INFO("close()", "Closing device");
acquire_plugin()
->communicator(boost::static_pointer_cast<DeviceAPI>(device)->device)
->close(callbacks);
} catch (const std::exception &e) {
FBLOG_ERROR("close()", "Exception caught");
FBLOG_ERROR("close()", e.what());
callbacks->InvokeAsync("error", FB::variant_list_of(e.what()));
}
}