[geary/wip/768975-service-info: 3/4] Introduce ServiceInformation classes

[Michael Gratton <mjog src gnome org>]

commit cd3cb4c6ffedbc99270758e32b0fa602806296b4
Author: Oskar Viljasaar <oskar viljasaar gmail com>
Date:   Fri Jul 14 17:10:35 2017 +0200

    Introduce ServiceInformation classes
    
    This introduces an abstract ServiceInformation class and a derived
    LocalServiceInformation class describing various settings used to
    connect to IMAP and SMTP servers. No functional changes for now.
    
    In the future, LocalServiceInformation will be moved client-side.

 po/POTFILES.in                                     |    2 +
 src/CMakeLists.txt                                 |    2 +
 .../api/geary-local-service-information.vala       |  107 ++++++++++++++++++++
 src/engine/api/geary-service-information.vala      |   49 +++++++++
 4 files changed, 160 insertions(+), 0 deletions(-)
---
diff --git a/po/POTFILES.in b/po/POTFILES.in
index b4d416f..515b48f 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -123,6 +123,7 @@ src/engine/api/geary-folder-supports-mark.vala
 src/engine/api/geary-folder-supports-move.vala
 src/engine/api/geary-folder-supports-remove.vala
 src/engine/api/geary-folder.vala
+src/engine/api/geary-local-service-information.vala
 src/engine/api/geary-logging.vala
 src/engine/api/geary-named-flag.vala
 src/engine/api/geary-named-flags.vala
@@ -130,6 +131,7 @@ src/engine/api/geary-progress-monitor.vala
 src/engine/api/geary-revokable.vala
 src/engine/api/geary-search-folder.vala
 src/engine/api/geary-search-query.vala
+src/engine/api/geary-service-information.vala
 src/engine/api/geary-service-provider.vala
 src/engine/api/geary-service.vala
 src/engine/api/geary-special-folder-type.vala
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 63e5d27..48edda2 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -35,6 +35,7 @@ engine/api/geary-folder-supports-empty.vala
 engine/api/geary-folder-supports-mark.vala
 engine/api/geary-folder-supports-move.vala
 engine/api/geary-folder-supports-remove.vala
+engine/api/geary-local-service-information.vala
 engine/api/geary-logging.vala
 engine/api/geary-named-flag.vala
 engine/api/geary-named-flags.vala
@@ -43,6 +44,7 @@ engine/api/geary-revokable.vala
 engine/api/geary-search-folder.vala
 engine/api/geary-search-query.vala
 engine/api/geary-service.vala
+engine/api/geary-service-information.vala
 engine/api/geary-service-provider.vala
 engine/api/geary-special-folder-type.vala
 
diff --git a/src/engine/api/geary-local-service-information.vala 
b/src/engine/api/geary-local-service-information.vala
new file mode 100644
index 0000000..41bb7dc
--- /dev/null
+++ b/src/engine/api/geary-local-service-information.vala
@@ -0,0 +1,107 @@
+/* Copyright 2017 Software Freedom Conservancy Inc.
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later).  See the COPYING file in this distribution.
+ */
+
+/* A local service implementation. This loads and saves IMAP and SMTP settings
+ * from and to an account's configuration file. */
+public class Geary.LocalServiceInformation : Geary.ServiceInformation {
+
+    // The account's configuration file.
+    private File file;
+
+    public LocalServiceInformation(Geary.Service service,
+                                   File config_directory,
+                                   Geary.CredentialsMediator? mediator) {
+        this.service = service;
+        this.file = config_directory.get_child(Geary.AccountInformation.SETTINGS_FILENAME);
+        this.mediator = mediator;
+        this.credentials_method = "METHOD_LIBSECRET";
+    }
+
+    public override void load_settings(KeyFile? key_file = null) throws Error {
+        string host_key = "";
+        string port_key = "";
+        string use_ssl_key = "";
+        string use_starttls_key = "";
+        uint16 default_port = 0;
+
+        key_file.load_from_file(file.get_path() ?? "", KeyFileFlags.NONE);
+
+        switch (service) {
+            case Geary.Service.IMAP:
+                host_key = Geary.Config.IMAP_HOST;
+                port_key = Geary.Config.IMAP_PORT;
+                use_ssl_key = Geary.Config.IMAP_SSL;
+                use_starttls_key = Geary.Config.IMAP_STARTTLS;
+                default_port = Geary.Imap.ClientConnection.DEFAULT_PORT_SSL;
+                break;
+            case Geary.Service.SMTP:
+                host_key = Geary.Config.SMTP_HOST;
+                port_key = Geary.Config.SMTP_PORT;
+                use_ssl_key = Geary.Config.SMTP_SSL;
+                use_starttls_key = Geary.Config.SMTP_STARTTLS;
+                default_port = Geary.Smtp.ClientConnection.DEFAULT_PORT_SSL;
+                this.smtp_noauth = Geary.Config.get_bool_value(
+                    key_file, Geary.Config.GROUP, Geary.Config.SMTP_NOAUTH, this.smtp_noauth);
+                if (smtp_noauth)
+                    credentials = null;
+                this.smtp_use_imap_credentials = Geary.Config.get_bool_value(
+                    key_file, Geary.Config.GROUP, Geary.Config.SMTP_USE_IMAP_CREDENTIALS, 
this.smtp_use_imap_credentials);
+                break;
+        }
+
+        this.host = Geary.Config.get_string_value(
+            key_file, Geary.Config.GROUP, host_key, this.host);
+        this.port = Geary.Config.get_uint16_value(
+            key_file, Geary.Config.GROUP, port_key, default_port);
+        this.use_ssl = Geary.Config.get_bool_value(
+            key_file, Geary.Config.GROUP, use_ssl_key, this.use_ssl);
+        this.use_starttls = Geary.Config.get_bool_value(
+            key_file, Geary.Config.GROUP, use_starttls_key, this.use_starttls);
+    }
+
+    public override void load_credentials(KeyFile? key_file = null, string? email_address = null) throws 
Error {
+        string remember_password_key = "";
+        string username_key = "";
+
+        key_file.load_from_file(file.get_path() ?? "", KeyFileFlags.NONE);
+
+        switch (this.service) {
+            case Geary.Service.IMAP:
+                username_key = Geary.Config.IMAP_USERNAME_KEY;
+                remember_password_key = Geary.Config.IMAP_REMEMBER_PASSWORD_KEY;
+                break;
+            case Geary.Service.SMTP:
+                username_key = Geary.Config.SMTP_USERNAME_KEY;
+                remember_password_key = Geary.Config.SMTP_REMEMBER_PASSWORD_KEY;
+                break;
+        }
+
+        this.credentials.user = Geary.Config.get_string_value(
+            key_file, Geary.Config.GROUP, username_key, email_address);
+        this.remember_password = Geary.Config.get_bool_value(
+            key_file, Geary.Config.GROUP, remember_password_key, this.remember_password);
+    }
+
+    public override void save_settings(KeyFile? key_file = null) {
+        switch (this.service) {
+            case Geary.Service.IMAP:
+                key_file.set_value(Geary.Config.GROUP, Geary.Config.IMAP_HOST, this.host);
+                key_file.set_integer(Geary.Config.GROUP, Geary.Config.IMAP_PORT, this.port);
+                key_file.set_boolean(Geary.Config.GROUP, Geary.Config.IMAP_SSL, this.use_ssl);
+                key_file.set_boolean(Geary.Config.GROUP, Geary.Config.IMAP_STARTTLS, this.use_starttls);
+                break;
+            case Geary.Service.SMTP:
+                key_file.set_value(Geary.Config.GROUP, Geary.Config.SMTP_HOST, this.host);
+                key_file.set_integer(Geary.Config.GROUP, Geary.Config.SMTP_PORT, this.port);
+                key_file.set_boolean(Geary.Config.GROUP, Geary.Config.SMTP_SSL, this.use_ssl);
+                key_file.set_boolean(Geary.Config.GROUP, Geary.Config.SMTP_STARTTLS, this.use_starttls);
+                key_file.set_boolean(Geary.Config.GROUP, Geary.Config.SMTP_USE_IMAP_CREDENTIALS, 
this.smtp_use_imap_credentials);
+                key_file.set_boolean(Geary.Config.GROUP, Geary.Config.SMTP_NOAUTH, this.smtp_noauth);
+                break;
+        }
+    }
+
+}
diff --git a/src/engine/api/geary-service-information.vala b/src/engine/api/geary-service-information.vala
new file mode 100644
index 0000000..e3e5760
--- /dev/null
+++ b/src/engine/api/geary-service-information.vala
@@ -0,0 +1,49 @@
+/* Copyright 2017 Software Freedom Conservancy Inc.
+ *
+ * This software is licensed under the GNU Lesser General Public License
+ * (version 2.1 or later).  See the COPYING file in this distribution.
+ */
+
+public abstract class Geary.ServiceInformation : GLib.Object {
+    public const string METHOD_LIBSECRET = "libsecret";
+    public const string METHOD_GOA = "goa";
+
+    public string host { get; set; default = ""; }
+    public uint16 port { get; set; }
+    public bool use_starttls { get; set; default = false; }
+    public bool use_ssl { get; set; default = true; }
+    public bool remember_password { get; set; default = false; }
+    public Geary.Credentials credentials { get; set; default = new Geary.Credentials(null, null); }
+    public Geary.Service service { get; set; }
+    public Geary.CredentialsMediator? mediator { get; set; default = null; }
+    public string credentials_method { get; set; default = ""; }
+
+    // Used with SMTP servers
+    public bool smtp_noauth { get; set; default = false; }
+    public bool smtp_use_imap_credentials { get; set; default = false; }
+
+    public abstract void load_settings(KeyFile? key_file = null) throws Error;
+
+    public abstract void load_credentials(KeyFile? key_file = null, string? email_address = null) throws 
Error;
+
+    public abstract void save_settings(KeyFile? key_file = null);
+
+    public void copy_from(Geary.ServiceInformation from) {
+        this.host = from.host;
+        this.port = from.port;
+        this.use_starttls = from.use_starttls;
+        this.use_ssl = from.use_ssl;
+        this.remember_password = from.remember_password;
+        this.credentials = from.credentials;
+        this.service = from.service;
+        this.mediator = from.mediator;
+        this.credentials_method = from.credentials_method;
+        this.smtp_noauth = from.smtp_noauth;
+        this.smtp_use_imap_credentials = from.smtp_use_imap_credentials;
+    }
+
+    public void set_password(string password, bool remember = false) {
+        this.credentials = new Credentials(this.credentials.user, password);
+        this.remember_password = remember;
+    }
+}