How to get user's password? - gtk

Question

How to get user password with Vala? Secret.prompt.perform_sync() seems doesn't work.
I really don't know how use secret.prompt.
Main.vala:
class SecretServ : Secret.Service {
}
class SecPrompt : Secret.Prompt {
}
class ApplicationWindow : Gtk.ApplicationWindow {
construct {
show_all();
var ret = new VariantType("s");
string winid;
winid = "%d".printf((int) this.get_id());
SecPrompt prompt = new SecPrompt();
try {
prompt.perform_sync(winid, null, ret);
} catch (GLib.Error e) {
stderr.printf("ERROR: %s", e.message);
}
}
}
class Application : Gtk.Application {
public Application() {
Object(
application_id: "com.github.urandom0.pass",
flags: ApplicationFlags.FLAGS_NONE
);
}
protected override void activate() {
ApplicationWindow window = new ApplicationWindow();
this.add_window(window);
}
}
static int main(string[] args) {
var app = new Application();
return app.run(args);
}
Compile:
valac Main.vala --pkg=gtk+-3.0 --pkg=libsecret-1
Run:
./Main

Answer 1

You can't just create a Secret.Prompt like that. It is an object that is created by the libsecret library internally.
There is a Vala example on how to use libsecret here:
https://developer-old.gnome.org/libsecret/0.18/vala-examples.html
I will summarize the example as an answer below.
You have to first create a schema:
var example = new Secret.Schema ("org.example.Password", Secret.SchemaFlags.NONE,
"number", Secret.SchemaAttributeType.INTEGER,
"string", Secret.SchemaAttributeType.STRING,
"even", Secret.SchemaAttributeType.BOOLEAN);
Then you can store properties into the schema:
var attributes = new GLib.HashTable<string,string> ();
attributes["number"] = "8";
attributes["string"] = "eight";
attributes["even"] = "true";
Secret.password_storev.begin (example_schema, attributes, Secret.COLLECTION_DEFAULT,
"The label", "the password", null, (obj, async_res) => {
bool res = Secret.password_store.end (async_res);
/* ... do something now that the password has been stored */
});
And finally retrieve them again:
var attributes = new GLib.HashTable<string,string> ();
attributes["number"] = "8";
attributes["string"] = "eight";
attributes["even"] = "true";
Secret.password_lookupv.begin (example_schema, attributes, null, (obj, async_res) => {
string password = Secret.password_lookup.end (async_res);
});
For more details read the whole libsecret documentation at:
https://developer-old.gnome.org/libsecret/0.18/index.html