[evolution-data-server/gnome-3-20] [IMAPx] Do not change Sent folder for GMail in initial setup

[Milan Crha <mcrha src gnome org>]

commit 0d6ffaf412b1812d2a4c72c913b9b84a12f380d3
Author: Milan Crha <mcrha redhat com>
Date:   Wed Mar 30 22:22:56 2016 +0200

    [IMAPx] Do not change Sent folder for GMail in initial setup
    
    GMail stores sent messages on the server side automatically, thus
    saving a sent message there would make only doubled copies of that
    message on the server. This doesn't change the Sent folder at all,
    thus if users have it already set to the server, or anywhere else,
    then the setting is preserved.

 camel/providers/imapx/camel-imapx-store.c |   38 +++++++++++++++++++++++++---
 1 files changed, 34 insertions(+), 4 deletions(-)
---
diff --git a/camel/providers/imapx/camel-imapx-store.c b/camel/providers/imapx/camel-imapx-store.c
index 8271bc8..9cd23db 100644
--- a/camel/providers/imapx/camel-imapx-store.c
+++ b/camel/providers/imapx/camel-imapx-store.c
@@ -2258,6 +2258,32 @@ exit:
        return success;
 }
 
+static gboolean
+imapx_is_gmail_server (CamelService *service)
+{
+       CamelSettings *settings;
+       gboolean is_gmail = FALSE;
+
+       g_return_val_if_fail (CAMEL_IS_SERVICE (service), FALSE);
+
+       settings = camel_service_ref_settings (service);
+       if (CAMEL_IS_NETWORK_SETTINGS (settings)) {
+               gchar *host;
+
+               host = camel_network_settings_dup_host (CAMEL_NETWORK_SETTINGS (settings));
+
+               is_gmail = host && (
+                       camel_strstrcase (host, ".gmail.com") != NULL ||
+                       camel_strstrcase (host, ".googlemail.com") != NULL);
+
+               g_free (host);
+       }
+
+       g_clear_object (&settings);
+
+       return is_gmail;
+}
+
 static gchar *
 imapx_find_folder_for_initial_setup (CamelFolderInfo *root,
                                     const gchar *path)
@@ -2506,10 +2532,14 @@ imapx_initial_setup_sync (CamelStore *store,
                CAMEL_STORE_SETUP_ARCHIVE_FOLDER, NULL, NULL,
                archive_names, G_N_ELEMENTS (archive_names));
 
-       imapx_check_initial_setup_group (imapx_store, finfo, save_setup,
-               CAMEL_IMAPX_LIST_ATTR_SENT,
-               CAMEL_STORE_SETUP_SENT_FOLDER, NULL, NULL,
-               sent_names, G_N_ELEMENTS (sent_names));
+       /* Skip changing Sent folder for GMail, because GMail stores sent messages
+          automatically, thus it would make doubled copies on the server. */
+       if (!imapx_is_gmail_server (CAMEL_SERVICE (store))) {
+               imapx_check_initial_setup_group (imapx_store, finfo, save_setup,
+                       CAMEL_IMAPX_LIST_ATTR_SENT,
+                       CAMEL_STORE_SETUP_SENT_FOLDER, NULL, NULL,
+                       sent_names, G_N_ELEMENTS (sent_names));
+       }
 
        /* It's a folder path inside the account, thus not use the 'f' type, but the 's' type. */
        imapx_check_initial_setup_group (imapx_store, finfo, save_setup,