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-rw-r--r--src/adbd-client.cpp25
-rw-r--r--src/greeter.cpp192
-rw-r--r--src/greeter.h10
-rw-r--r--src/usb-manager.cpp103
-rw-r--r--src/usb-snap.cpp1
5 files changed, 206 insertions, 125 deletions
diff --git a/src/adbd-client.cpp b/src/adbd-client.cpp
index 400c7c9..47914cb 100644
--- a/src/adbd-client.cpp
+++ b/src/adbd-client.cpp
@@ -23,6 +23,7 @@
#include <gio/gunixsocketaddress.h>
#include <algorithm>
+#include <atomic>
#include <cctype>
#include <cstring>
#include <chrono>
@@ -48,7 +49,9 @@ public:
g_cancellable_cancel(m_cancellable);
m_pkresponse_cv.notify_one();
m_sleep_cv.notify_one();
- m_worker_thread.join();
+ if (m_worker_thread.joinable()) {
+ m_worker_thread.join();
+ }
g_clear_object(&m_cancellable);
}
@@ -66,7 +69,7 @@ private:
GCancellable* cancellable = nullptr;
const std::string public_key;
- PKIdleData(Impl* self_, GCancellable* cancellable_, std::string public_key_):
+ PKIdleData(Impl* self_, GCancellable* cancellable_, const std::string& public_key_):
self(self_),
cancellable(G_CANCELLABLE(g_object_ref(cancellable_))),
public_key(public_key_) {}
@@ -104,8 +107,9 @@ private:
void on_public_key_response(PKResponse response)
{
+ g_debug("%s thread %p got response %d", G_STRLOC, g_thread_self(), int(response));
+
// set m_pkresponse and wake up the waiting worker thread
- std::unique_lock<std::mutex> lk(m_pkresponse_mutex);
m_pkresponse = response;
m_pkresponse_ready = true;
m_pkresponse_cv.notify_one();
@@ -121,11 +125,11 @@ private:
while (!g_cancellable_is_cancelled(m_cancellable))
{
- g_debug("%s creating a client socket to '%s'", G_STRLOC, socket_path.c_str());
+ g_debug("%s thread %p creating a client socket to '%s'", G_STRLOC, g_thread_self(), socket_path.c_str());
auto socket = create_client_socket(socket_path);
bool got_valid_req = false;
- g_debug("%s calling read_request", G_STRLOC);
+ g_debug("%s thread %p calling read_request", g_thread_self(), G_STRLOC);
std::string reqstr;
if (socket != nullptr)
reqstr = read_request(socket);
@@ -135,22 +139,25 @@ private:
if (reqstr.substr(0,2) == "PK") {
PKResponse response = PKResponse::DENY;
const auto public_key = reqstr.substr(2);
- g_debug("%s got pk [%s]", G_STRLOC, public_key.c_str());
+ g_debug("%s thread %p got pk [%s]", G_STRLOC, g_thread_self(), public_key.c_str());
if (!public_key.empty()) {
got_valid_req = true;
std::unique_lock<std::mutex> lk(m_pkresponse_mutex);
m_pkresponse_ready = false;
+ m_pkresponse = AdbdClient::PKResponse::DENY;
pass_public_key_to_main_thread(public_key);
m_pkresponse_cv.wait(lk, [this](){
return m_pkresponse_ready || g_cancellable_is_cancelled(m_cancellable);
});
response = m_pkresponse;
- g_debug("%s got response '%d', is-cancelled %d", G_STRLOC,
+ g_debug("%s thread %p got response '%d', is-cancelled %d", G_STRLOC,
+ g_thread_self(),
int(response),
int(g_cancellable_is_cancelled(m_cancellable)));
}
- if (!g_cancellable_is_cancelled(m_cancellable))
+ if (!g_cancellable_is_cancelled(m_cancellable)) {
send_pk_response(socket, response);
+ }
} else if (!reqstr.empty()) {
g_warning("Invalid ADB request: [%s]", reqstr.c_str());
}
@@ -270,7 +277,7 @@ private:
std::mutex m_pkresponse_mutex;
std::condition_variable m_pkresponse_cv;
- bool m_pkresponse_ready = false;
+ std::atomic<bool> m_pkresponse_ready {false};
PKResponse m_pkresponse = PKResponse::DENY;
};
diff --git a/src/greeter.cpp b/src/greeter.cpp
index f9cd965..3d0f347 100644
--- a/src/greeter.cpp
+++ b/src/greeter.cpp
@@ -26,117 +26,167 @@ class UnityGreeter::Impl
{
public:
- Impl():
- m_cancellable{g_cancellable_new()}
+ Impl()
{
- g_bus_get(G_BUS_TYPE_SESSION, m_cancellable, on_bus_ready_static, this);
+ m_cancellable.reset(
+ g_cancellable_new(),
+ [](GCancellable* o){
+ g_cancellable_cancel(o);
+ g_clear_object(&o);
+ }
+ );
+
+ g_bus_get(G_BUS_TYPE_SESSION, m_cancellable.get(), on_bus_ready, this);
}
- ~Impl()
- {
- g_cancellable_cancel(m_cancellable);
- g_clear_object(&m_cancellable);
-
- if (m_subscription_id != 0)
- g_dbus_connection_signal_unsubscribe (m_bus, m_subscription_id);
+ ~Impl() =default;
- g_clear_object(&m_bus);
- }
-
- core::Property<bool>& is_active()
+ core::Property<State>& state()
{
- return m_is_active;
+ return m_state;
}
private:
- static void on_bus_ready_static(GObject* /*source*/, GAsyncResult* res, gpointer gself)
+ void set_state(const State& state)
+ {
+ m_state.set(state);
+ }
+
+ static void on_bus_ready(
+ GObject* /*source*/,
+ GAsyncResult* res,
+ gpointer gself)
{
GError* error {};
- auto bus = g_bus_get_finish (res, &error);
- if (error != nullptr) {
+ auto bus = g_bus_get_finish(res, &error);
+ if (error != nullptr)
+ {
if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
- g_warning("UsbSnap: Error getting session bus: %s", error->message);
+ g_warning("Greeter: Error getting bus: %s", error->message);
g_clear_error(&error);
- } else {
- static_cast<Impl*>(gself)->on_bus_ready(bus);
}
- g_clear_object(&bus);
+ else
+ {
+ auto self = static_cast<Impl*>(gself);
+
+ const auto watcher_id = g_bus_watch_name_on_connection(
+ bus,
+ DBusNames::UnityGreeter::NAME,
+ G_BUS_NAME_WATCHER_FLAGS_AUTO_START,
+ on_greeter_appeared,
+ on_greeter_vanished,
+ gself,
+ nullptr);
+
+ const auto subscription_id = g_dbus_connection_signal_subscribe(
+ bus,
+ DBusNames::UnityGreeter::NAME,
+ DBusNames::Properties::INTERFACE,
+ DBusNames::Properties::PropertiesChanged::NAME,
+ DBusNames::UnityGreeter::PATH,
+ DBusNames::UnityGreeter::INTERFACE,
+ G_DBUS_SIGNAL_FLAGS_NONE,
+ on_properties_changed_signal,
+ gself,
+ nullptr);
+
+ self->m_bus.reset(
+ bus,
+ [watcher_id, subscription_id](GDBusConnection* o){
+ g_bus_unwatch_name(watcher_id);
+ g_dbus_connection_signal_unsubscribe(o, subscription_id);
+ g_clear_object(&o);
+ }
+ );
+ }
+ }
+
+ static void on_greeter_appeared(
+ GDBusConnection* bus,
+ const char* /*name*/,
+ const char* name_owner,
+ gpointer gself)
+ {
+ auto self = static_cast<Impl*>(gself);
+
+ self->m_owner = name_owner;
+
+ g_dbus_connection_call(
+ bus,
+ DBusNames::UnityGreeter::NAME,
+ DBusNames::UnityGreeter::PATH,
+ DBusNames::Properties::INTERFACE,
+ "Get",
+ g_variant_new("(ss)", DBusNames::UnityGreeter::INTERFACE, "IsActive"),
+ G_VARIANT_TYPE("(v)"),
+ G_DBUS_CALL_FLAGS_NONE,
+ -1,
+ self->m_cancellable.get(),
+ on_get_is_active_ready,
+ gself);
}
- void on_bus_ready(GDBusConnection* bus)
+ static void on_greeter_vanished(
+ GDBusConnection* /*bus*/,
+ const char* /*name*/,
+ gpointer gself)
{
- m_bus = G_DBUS_CONNECTION(g_object_ref(G_OBJECT(bus)));
-
- g_dbus_connection_call(m_bus,
- DBusNames::UnityGreeter::NAME,
- DBusNames::UnityGreeter::PATH,
- DBusNames::Properties::INTERFACE,
- "Get",
- g_variant_new("(ss)", DBusNames::UnityGreeter::INTERFACE, "IsActive"),
- G_VARIANT_TYPE("(v)"),
- G_DBUS_CALL_FLAGS_NONE,
- -1,
- m_cancellable,
- on_get_is_active_ready,
- this);
-
- m_subscription_id = g_dbus_connection_signal_subscribe(m_bus,
- DBusNames::UnityGreeter::NAME,
- DBusNames::Properties::INTERFACE,
- DBusNames::Properties::PropertiesChanged::NAME,
- DBusNames::UnityGreeter::PATH,
- DBusNames::UnityGreeter::INTERFACE,
- G_DBUS_SIGNAL_FLAGS_NONE,
- on_properties_changed_signal,
- this,
- nullptr);
+ auto self = static_cast<Impl*>(gself);
+
+ self->m_owner.clear();
+ self->set_state(State::UNAVAILABLE);
}
- static void on_get_is_active_ready(GObject* source, GAsyncResult* res, gpointer gself)
+ static void on_get_is_active_ready(
+ GObject* source,
+ GAsyncResult* res,
+ gpointer gself)
{
GError* error {};
auto v = g_dbus_connection_call_finish(G_DBUS_CONNECTION(source), res, &error);
if (error != nullptr) {
- if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
- g_warning("UsbSnap: Error getting session bus: %s", error->message);
+ if (!g_error_matches(error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
+ g_warning("Greeter: Error getting IsActive property: %s", error->message);
+ }
g_clear_error(&error);
} else {
GVariant* is_active {};
g_variant_get_child(v, 0, "v", &is_active);
- static_cast<Impl*>(gself)->m_is_active.set(g_variant_get_boolean(is_active));
+ static_cast<Impl*>(gself)->set_state(g_variant_get_boolean(is_active) ? State::ACTIVE : State::INACTIVE);
g_clear_pointer(&is_active, g_variant_unref);
}
g_clear_pointer(&v, g_variant_unref);
}
- static void on_properties_changed_signal(GDBusConnection* /*connection*/,
- const gchar* /*sender_name*/,
- const gchar* object_path,
- const gchar* interface_name,
- const gchar* signal_name,
- GVariant* parameters,
- gpointer gself)
+ static void on_properties_changed_signal(
+ GDBusConnection* /*bus*/,
+ const gchar* sender_name,
+ const gchar* object_path,
+ const gchar* interface_name,
+ const gchar* signal_name,
+ GVariant* parameters,
+ gpointer gself)
{
+ auto self = static_cast<Impl*>(gself);
+
+ g_return_if_fail(!g_strcmp0(sender_name, self->m_owner.c_str()));
g_return_if_fail(!g_strcmp0(object_path, DBusNames::UnityGreeter::PATH));
g_return_if_fail(!g_strcmp0(interface_name, DBusNames::Properties::INTERFACE));
g_return_if_fail(!g_strcmp0(signal_name, DBusNames::Properties::PropertiesChanged::NAME));
g_return_if_fail(g_variant_is_of_type(parameters, G_VARIANT_TYPE(DBusNames::Properties::PropertiesChanged::ARGS_VARIANT_TYPE)));
- auto v = g_variant_get_child_value (parameters, 1);
+ auto v = g_variant_get_child_value(parameters, 1);
gboolean is_active {};
if (g_variant_lookup(v, "IsActive", "b", &is_active))
- {
- g_debug("%s is_active changed to %d", G_STRLOC, int(is_active));
- static_cast<Impl*>(gself)->m_is_active.set(is_active);
- }
+ self->set_state(is_active ? State::ACTIVE : State::INACTIVE);
g_clear_pointer(&v, g_variant_unref);
}
- core::Property<bool> m_is_active;
- GCancellable* m_cancellable {};
- GDBusConnection* m_bus {};
- unsigned int m_subscription_id {};
+ core::Property<State> m_state {State::UNAVAILABLE};
+ std::shared_ptr<GCancellable> m_cancellable;
+ std::shared_ptr<GDBusConnection> m_bus;
+ std::string m_owner;
};
/***
@@ -154,8 +204,8 @@ UnityGreeter::UnityGreeter():
UnityGreeter::~UnityGreeter() =default;
-core::Property<bool>&
-UnityGreeter::is_active()
+core::Property<Greeter::State>&
+UnityGreeter::state()
{
- return impl->is_active();
+ return impl->state();
}
diff --git a/src/greeter.h b/src/greeter.h
index e084d25..f3012f6 100644
--- a/src/greeter.h
+++ b/src/greeter.h
@@ -29,7 +29,13 @@ class Greeter
public:
Greeter();
virtual ~Greeter();
- virtual core::Property<bool>& is_active() =0;
+
+ enum class State { UNAVAILABLE, INACTIVE, ACTIVE };
+static inline const char* state_str(const State& state) {
+ static constexpr char const * state_str[] = { "Unavailable", "Inactive", "Active" };
+ return state_str[int(state)];
+}
+ virtual core::Property<State>& state() =0;
};
@@ -38,7 +44,7 @@ class UnityGreeter: public Greeter
public:
UnityGreeter();
virtual ~UnityGreeter();
- core::Property<bool>& is_active() override;
+ core::Property<State>& state() override;
protected:
class Impl;
diff --git a/src/usb-manager.cpp b/src/usb-manager.cpp
index 4d750c0..f83b5f1 100644
--- a/src/usb-manager.cpp
+++ b/src/usb-manager.cpp
@@ -46,72 +46,89 @@ public:
m_greeter{greeter}
{
m_usb_monitor->on_usb_disconnected().connect([this](const std::string& /*usb_name*/) {
- restart();
+ m_req.reset();
});
- m_greeter->is_active().changed().connect([this](bool /*is_active*/) {
- maybe_snap();
+ m_greeter->state().changed().connect([this](const Greeter::State& state) {
+ if (state == Greeter::State::INACTIVE) {
+ maybe_snap();
+ } else {
+ stop_snap();
+ }
});
- restart();
+ // create a new adbd client
+ m_adbd_client.reset(new GAdbdClient{m_socket_path});
+ m_adbd_client->on_pk_request().connect(
+ [this](const AdbdClient::PKRequest& req) {
+ g_debug("%s got pk request: %s, calling maybe_snap()", G_STRLOC, req.fingerprint.c_str());
+
+ m_response = AdbdClient::PKResponse::DENY; // set the fallback response
+ m_req.reset(
+ new AdbdClient::PKRequest(req),
+ [this](AdbdClient::PKRequest* r) {
+ stop_snap();
+ r->respond(m_response);
+ delete r;
+ }
+ );
+ maybe_snap();
+ }
+ );
}
~Impl()
{
- if (m_restart_idle_tag)
- g_source_remove(m_restart_idle_tag);
-
- clear();
+ if (m_request_complete_idle_tag) {
+ g_source_remove(m_request_complete_idle_tag);
+ }
}
private:
- void clear()
+ void stop_snap()
{
- // clear out old state
m_snap_connections.clear();
m_snap.reset();
- m_req = decltype(m_req)();
- m_adbd_client.reset();
}
- void restart()
+ void maybe_snap()
{
- clear();
+ // only prompt if there's something to prompt about
+ if (!m_req) {
+ return;
+ }
- // set a new client
- m_adbd_client.reset(new GAdbdClient{m_socket_path});
- m_adbd_client->on_pk_request().connect(
- [this](const AdbdClient::PKRequest& req) {
- g_debug("%s got pk request: %s", G_STRLOC, req.fingerprint.c_str());
- m_req = req;
- maybe_snap();
- }
- );
- }
+ // only prompt in an unlocked session
+ if (m_greeter->state().get() != Greeter::State::INACTIVE) {
+ return;
+ }
- void maybe_snap()
- {
- // don't prompt in the greeter!
- if (!m_req.public_key.empty() && !m_greeter->is_active().get())
- snap();
+ snap();
}
void snap()
{
- m_snap = std::make_shared<UsbSnap>(m_req.fingerprint);
+ m_snap = std::make_shared<UsbSnap>(m_req->fingerprint);
m_snap_connections.insert((*m_snap).on_user_response().connect(
[this](AdbdClient::PKResponse response, bool remember_choice){
- g_debug("%s user responded! response %d, remember %d", G_STRLOC, int(response), int(remember_choice));
- m_req.respond(response);
- if (remember_choice && (response == AdbdClient::PKResponse::ALLOW))
- write_public_key(m_req.public_key);
- m_restart_idle_tag = g_idle_add([](gpointer gself){
- auto self = static_cast<Impl*>(gself);
- self->m_restart_idle_tag = 0;
- self->restart();
- return G_SOURCE_REMOVE;
- }, this);
+
+ if (remember_choice && (response == AdbdClient::PKResponse::ALLOW)) {
+ write_public_key(m_req->public_key);
+ }
+
+ m_response = response;
+
+ // defer finishing the request into an idle func because
+ // ScopedConnections can't be destroyed inside their callbacks
+ if (m_request_complete_idle_tag == 0) {
+ m_request_complete_idle_tag = g_idle_add([](gpointer gself){
+ auto self = static_cast<Impl*>(gself);
+ self->m_request_complete_idle_tag = 0;
+ self->m_req.reset();
+ return G_SOURCE_REMOVE;
+ }, this);
+ }
}
));
}
@@ -152,12 +169,13 @@ private:
const std::shared_ptr<UsbMonitor> m_usb_monitor;
const std::shared_ptr<Greeter> m_greeter;
- unsigned int m_restart_idle_tag {};
+ unsigned int m_request_complete_idle_tag {};
std::shared_ptr<GAdbdClient> m_adbd_client;
- AdbdClient::PKRequest m_req;
std::shared_ptr<UsbSnap> m_snap;
std::set<core::ScopedConnection> m_snap_connections;
+ AdbdClient::PKResponse m_response {AdbdClient::PKResponse::DENY};
+ std::shared_ptr<AdbdClient::PKRequest> m_req;
};
/***
@@ -177,4 +195,3 @@ UsbManager::UsbManager(
UsbManager::~UsbManager()
{
}
-
diff --git a/src/usb-snap.cpp b/src/usb-snap.cpp
index ba964fb..53db6c4 100644
--- a/src/usb-snap.cpp
+++ b/src/usb-snap.cpp
@@ -208,6 +208,7 @@ private:
const bool remember_this_choice = response == AdbdClient::PKResponse::ALLOW;
m_on_user_response(response, remember_this_choice);
+ m_notification_id = 0;
}
void on_notification_closed(uint32_t close_reason)
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-28 09:47:12 +0000