audrey/src/ui/setup.vala

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Vala
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[CCode (cname = "sqlite3_randomness")]
public extern void randomness (int N, void *P);
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[GtkTemplate (ui = "/eu/callcc/audrey/ui/setup.ui")]
public class Ui.Setup : Adw.PreferencesDialog {
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public string status { get; private set; default = _("Not connected"); }
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public bool authn_can_edit { get; private set; default = true; }
public bool authn_can_validate { get; private set; default = false; }
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public string server_url { get; set; default = ""; }
public string username { get; set; default = ""; }
public string password { get; set; default = ""; }
public string token;
public string salt;
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public signal void connected (Subsonic api);
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private Sqlite.Database db;
private Sqlite.Statement db_get;
private Sqlite.Statement db_set;
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private static Secret.Schema secret_schema = new Secret.Schema (
"eu.callcc.audrey",
Secret.SchemaFlags.NONE,
"server-url", Secret.SchemaAttributeType.STRING,
"username", Secret.SchemaAttributeType.STRING
);
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construct {
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var app_config_dir = Path.build_filename (Environment.get_user_config_dir (), "audrey");
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try {
File.new_build_filename (app_config_dir).make_directory_with_parents ();
} catch (Error e) {
// just ignore if the directory already existed
}
int ec = Sqlite.Database.open (Path.build_filename (app_config_dir, "config.db"), out this.db);
assert (ec == Sqlite.OK);
ec = this.db.exec ("""
CREATE TABLE IF NOT EXISTS Setup (key UNIQUE, value);
""", null, null);
assert (ec == Sqlite.OK);
ec = this.db.prepare_v2 ("""SELECT value FROM Setup WHERE key IS ?1""", -1, out this.db_get);
assert (ec == Sqlite.OK);
ec = this.db.prepare_v2 ("""INSERT OR REPLACE INTO Setup VALUES (?1, ?2)""", -1, out this.db_set);
assert (ec == Sqlite.OK);
}
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[GtkCallback] private void on_authn_changed () {
this.authn_can_validate = true;
}
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[GtkCallback] private void on_authn_validate_activated () {
this.authn_can_validate = false;
this.authn_can_edit = false;
this.status = _("Connecting...");
string new_token, new_salt;
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this.salt_password (this.password, out new_token, out new_salt);
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var api = new Subsonic.with_token (
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this.server_url,
this.username,
new_token,
new_salt);
api.ping.begin ((obj, res) => {
try {
api.ping.end (res);
this.status = _("Connected");
this.token = new_token;
this.salt = new_salt;
this.save ();
this.connected (api);
} catch (Error e) {
this.status = @"$(_("Ping failed")): $(e.message)";
this.authn_can_validate = true;
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}
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this.authn_can_edit = true;
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});
}
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public void load () {
this.db_get.bind_text (1, "server_url");
if (this.db_get.step () == Sqlite.ROW) {
this.server_url = this.db_get.column_text (0);
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} else {
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this.server_url = "";
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}
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assert (this.db_get.reset () == Sqlite.OK);
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this.db_get.bind_text (1, "username");
if (this.db_get.step () == Sqlite.ROW) {
this.username = this.db_get.column_text (0);
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} else {
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this.username = "";
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}
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assert (this.db_get.reset () == Sqlite.OK);
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this.authn_can_edit = false;
Secret.password_lookup.begin (secret_schema, null, (obj, res) => {
try {
string? password = Secret.password_lookup.end (res);
this.password = password ?? "";
} catch (Error e) {
error ("could not look up password in keyring: %s", e.message);
}
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// first connection
this.authn_can_validate = true;
this.on_authn_validate_activated ();
}, "server-url", this.server_url, "username", this.username);
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}
private void salt_password (string password, out string token, out string salt) {
uchar salt_bytes[8];
randomness (8, salt_bytes);
uchar salt_chars[17];
for (int i = 0; i < 8; i += 1) {
salt_chars[2*i+0] = "0123456789abcdef"[(salt_bytes[i]>>4)&0xf];
salt_chars[2*i+1] = "0123456789abcdef"[(salt_bytes[i]>>0)&0xf];
}
salt_chars[16] = 0;
var checksum = new Checksum (ChecksumType.MD5);
checksum.update ((uchar[]) password, -1);
checksum.update (salt_chars, 16);
token = checksum.get_string ();
salt = (string) salt_chars;
}
public void save () {
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this.db_set.bind_text (1, "server_url");
this.db_set.bind_text (2, this.server_url);
assert (this.db_set.step () == Sqlite.DONE);
assert (this.db_set.reset () == Sqlite.OK);
this.db_set.bind_text (1, "username");
this.db_set.bind_text (2, this.username);
assert (this.db_set.step () == Sqlite.DONE);
assert (this.db_set.reset () == Sqlite.OK);
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this.authn_can_edit = false;
Secret.password_store.begin (secret_schema, null, "Subsonic password", this.password, null, (obj, res) => {
try {
Secret.password_store.end (res);
} catch (Error e) {
error ("could not store password in keyring: %s", e.message);
}
this.authn_can_edit = true;
}, "server-url", this.server_url, "username", this.username);
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}
}