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device/trezor: device sorting and filtering improved 

- Trezor type detection refactored, T1 disabled (was enabled before which was a bug)
- Sort connected devices by env TREZOR_PATH
  - Compatibility with Trezor ecosystem using TREZOR_PATH env var
  - Enables to pick particular Trezor to use in GUI as we don't have the multi-device selection yet
- Dump all detected devices to log for better debugging / troubleshooting
This commit is contained in:
Dusan Klinec 2019-04-22 12:37:20 +02:00
parent 475481949a
commit 0aaf5e2ac8
No known key found for this signature in database
GPG Key ID: 6337E118CCBCE103
3 changed files with 115 additions and 16 deletions
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6
src/device_trezor/device_trezor_base.cpp
View File

@ -115,10 +115,14 @@ namespace trezor {
MDEBUG("Enumerating Trezor devices...");
enumerate(trans);
sort_transports_by_env(trans);
MDEBUG("Enumeration yielded " << trans.size() << " devices");
MDEBUG("Enumeration yielded " << trans.size() << " Trezor devices");
for (auto &cur : trans) {
MDEBUG(" device: " << *(cur.get()));
}
for (auto &cur : trans) {
std::string cur_path = cur->get_path();
if (boost::starts_with(cur_path, this->name)) {
MDEBUG("Device Match: " << cur_path);

120
src/device_trezor/trezor/transport.cpp
View File

@ -31,11 +31,13 @@
#include <libusb.h>
#endif
#include <algorithm>
#include <boost/endian/conversion.hpp>
#include <boost/asio/io_service.hpp>
#include <boost/asio/ip/udp.hpp>
#include <boost/date_time/posix_time/posix_time_types.hpp>
#include <boost/format.hpp>
#include "common/apply_permutation.h"
#include "transport.hpp"
#include "messages/messages-common.pb.h"
@ -95,6 +97,47 @@ namespace trezor{
return patch | (((uint64_t)minor) << bits_2) | (((uint64_t)major) << (bits_1 + bits_2));
}
typedef struct {
uint16_t trezor_type;
uint16_t id_vendor;
uint16_t id_product;
} trezor_usb_desc_t;
static trezor_usb_desc_t TREZOR_DESC_T1 = {1, 0x534C, 0x0001};
static trezor_usb_desc_t TREZOR_DESC_T2 = {2, 0x1209, 0x53C1};
static trezor_usb_desc_t TREZOR_DESC_T2_BL = {3, 0x1209, 0x53C0};
static trezor_usb_desc_t TREZOR_DESCS[] = {
TREZOR_DESC_T1,
TREZOR_DESC_T2,
TREZOR_DESC_T2_BL,
};
static size_t TREZOR_DESCS_LEN = sizeof(TREZOR_DESCS)/sizeof(TREZOR_DESCS[0]);
static ssize_t get_device_idx(uint16_t id_vendor, uint16_t id_product){
for(size_t i = 0; i < TREZOR_DESCS_LEN; ++i){
if (TREZOR_DESCS[i].id_vendor == id_vendor && TREZOR_DESCS[i].id_product == id_product){
return i;
}
}
return -1;
}
static bool is_device_supported(ssize_t device_idx){
CHECK_AND_ASSERT_THROW_MES(device_idx < (ssize_t)TREZOR_DESCS_LEN, "Device desc idx too big");
if (device_idx < 0){
return false;
}
#ifdef TREZOR_1_SUPPORTED
return true;
#else
return TREZOR_DESCS[device_idx].trezor_type != 1;
#endif
}
//
// Helpers
//
@ -312,6 +355,24 @@ namespace trezor{
for(rapidjson::Value::ConstValueIterator itr = bridge_res.Begin(); itr != bridge_res.End(); ++itr){
auto element = itr->GetObject();
auto t = std::make_shared<BridgeTransport>(boost::make_optional(json_get_string(element["path"])));
auto itr_vendor = element.FindMember("vendor");
auto itr_product = element.FindMember("product");
if (itr_vendor != element.MemberEnd() && itr_product != element.MemberEnd()
&& itr_vendor->value.IsNumber() && itr_product->value.IsNumber()){
try {
const auto id_vendor = (uint16_t) itr_vendor->value.GetUint64();
const auto id_product = (uint16_t) itr_product->value.GetUint64();
const auto device_idx = get_device_idx(id_vendor, id_product);
if (!is_device_supported(device_idx)){
MDEBUG("Device with idx " << device_idx << " is not supported. Vendor: " << id_vendor << ", product: " << id_product);
continue;
}
} catch(const std::exception &e){
MERROR("Could not detect vendor & product: " << e.what());
}
}
t->m_device_info.emplace();
t->m_device_info->CopyFrom(*itr, t->m_device_info->GetAllocator());
res.push_back(t);
@ -710,24 +771,20 @@ namespace trezor{
#ifdef WITH_DEVICE_TREZOR_WEBUSB
static bool is_trezor1(libusb_device_descriptor * info){
return info->idVendor == 0x534C && info->idProduct == 0x0001;
return info->idVendor == TREZOR_DESC_T1.id_vendor && info->idProduct == TREZOR_DESC_T1.id_product;
}
static bool is_trezor2(libusb_device_descriptor * info){
return info->idVendor == 0x1209 && info->idProduct == 0x53C1;
return info->idVendor == TREZOR_DESC_T2.id_vendor && info->idProduct == TREZOR_DESC_T2.id_product;
}
static bool is_trezor2_bl(libusb_device_descriptor * info){
return info->idVendor == 0x1209 && info->idProduct == 0x53C0;
return info->idVendor == TREZOR_DESC_T2_BL.id_vendor && info->idProduct == TREZOR_DESC_T2_BL.id_product;
}
static uint8_t get_trezor_dev_mask(libusb_device_descriptor * info){
uint8_t mask = 0;
static ssize_t get_trezor_dev_id(libusb_device_descriptor *info){
CHECK_AND_ASSERT_THROW_MES(info, "Empty device descriptor");
mask |= is_trezor1(info) ? 1 : 0;
mask |= is_trezor2(info) ? 2 : 0;
mask |= is_trezor2_bl(info) ? 4 : 0;
return mask;
return get_device_idx(info->idVendor, info->idProduct);
}
static void set_libusb_log(libusb_context *ctx){
@ -844,12 +901,12 @@ namespace trezor{
continue;
}
const auto trezor_mask = get_trezor_dev_mask(&desc);
if (!trezor_mask){
const auto trezor_dev_idx = get_trezor_dev_id(&desc);
if (!is_device_supported(trezor_dev_idx)){
continue;
}
MTRACE("Found Trezor device: " << desc.idVendor << ":" << desc.idProduct << " mask " << (int)trezor_mask);
MTRACE("Found Trezor device: " << desc.idVendor << ":" << desc.idProduct << " dev_idx " << (int)trezor_dev_idx);
auto t = std::make_shared<WebUsbTransport>(boost::make_optional(&desc));
t->m_bus_id = libusb_get_bus_number(devs[i]);
@ -909,8 +966,8 @@ namespace trezor{
continue;
}
const auto trezor_mask = get_trezor_dev_mask(&desc);
if (!trezor_mask) {
const auto trezor_dev_idx = get_trezor_dev_id(&desc);
if (!is_device_supported(trezor_dev_idx)){
continue;
}
@ -921,7 +978,7 @@ namespace trezor{
get_libusb_ports(devs[i], path);
MTRACE("Found Trezor device: " << desc.idVendor << ":" << desc.idProduct
<< ", mask: " << (int)trezor_mask
<< ", dev_idx: " << (int)trezor_dev_idx
<< ". path: " << get_usb_path(bus_id, path));
if (bus_id == m_bus_id && path == m_port_numbers) {
@ -1110,6 +1167,39 @@ namespace trezor{
#endif
}
void sort_transports_by_env(t_transport_vect & res){
const char *env_trezor_path = getenv("TREZOR_PATH");
if (!env_trezor_path){
return;
}
// Sort transports by the longest matching prefix with TREZOR_PATH
std::string trezor_path(env_trezor_path);
std::vector<size_t> match_idx(res.size());
std::vector<size_t> path_permutation(res.size());
for(size_t i = 0; i < res.size(); ++i){
auto cpath = res[i]->get_path();
std::string * s1 = &trezor_path;
std::string * s2 = &cpath;
// first has to be shorter in std::mismatch(). Returns first non-matching iterators.
if (s1->size() >= s2->size()){
std::swap(s1, s2);
}
const auto mism = std::mismatch(s1->begin(), s1->end(), s2->begin());
match_idx[i] = mism.first - s1->begin();
path_permutation[i] = i;
}
std::sort(path_permutation.begin(), path_permutation.end(), [&](const size_t i0, const size_t i1) {
return match_idx[i0] > match_idx[i1];
});
tools::apply_permutation(path_permutation, res);
}
std::shared_ptr<Transport> transport(const std::string & path){
if (boost::starts_with(path, BridgeTransport::PATH_PREFIX)){
return std::make_shared<BridgeTransport>(path.substr(strlen(BridgeTransport::PATH_PREFIX)));

5
src/device_trezor/trezor/transport.hpp
View File

@ -302,6 +302,11 @@ namespace trezor {
*/
void enumerate(t_transport_vect & res);
/**
* Sorts found transports by TREZOR_PATH environment variable.
*/
void sort_transports_by_env(t_transport_vect & res);
/**
* Transforms path to the transport
*/