[evolution] I#1696 - Composer: Consider only accounts, which can send messages

[Milan Crha <mcrha src gnome org>]

commit 2788bed7bf1363634d1689c4d3cbc0e805dfb0ee
Author: Milan Crha <mcrha redhat com>
Date:   Mon Nov 15 15:48:38 2021 +0100

    I#1696 - Composer: Consider only accounts, which can send messages
    
    That's when trying to match an account based on the recipients
    in the original message.
    
    Closes https://gitlab.gnome.org/GNOME/evolution/-/issues/1696

 src/libemail-engine/e-mail-utils.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
---
diff --git a/src/libemail-engine/e-mail-utils.c b/src/libemail-engine/e-mail-utils.c
index 70325bb9bd..f35b672e3a 100644
--- a/src/libemail-engine/e-mail-utils.c
+++ b/src/libemail-engine/e-mail-utils.c
@@ -563,6 +563,35 @@ mail_account_in_recipients (ESourceRegistry *registry,
                }
        }
 
+       /* Return only accounts, which can send messages */
+       if (match) {
+               ESourceMailSubmission *submission;
+
+               submission = e_source_has_extension (source, E_SOURCE_EXTENSION_MAIL_SUBMISSION) ?
+                       e_source_get_extension (source, E_SOURCE_EXTENSION_MAIL_SUBMISSION) : NULL;
+
+               match = submission && e_source_mail_submission_get_transport_uid (submission) != NULL;
+
+               if (match) {
+                       ESource *transport_source;
+
+                       transport_source = e_source_registry_ref_source (registry, 
e_source_mail_submission_get_transport_uid (submission));
+                       if (transport_source) {
+                               ESourceBackend *transport;
+
+                               transport = e_source_has_extension (transport_source, 
E_SOURCE_EXTENSION_MAIL_TRANSPORT) ?
+                                       e_source_get_extension (transport_source, 
E_SOURCE_EXTENSION_MAIL_TRANSPORT) : NULL;
+
+                               match = transport && e_source_backend_get_backend_name (transport) != NULL &&
+                                       g_strcmp0 (e_source_backend_get_backend_name (transport), "none") != 
0;
+
+                               g_object_unref (transport_source);
+                       } else {
+                               match = FALSE;
+                       }
+               }
+       }
+
        g_object_unref (source);
 
        return match;