Parse To field and Chat-Group-Past-Members separately

Author: link2xt

Diff for: src/mimeparser.rs

@@ -57,9 +57,17 @@ pub(crate) struct MimeMessage {
     /// Message headers.
     headers: HashMap<String, String>,
 
-    /// Addresses are normalized and lowercase
+    /// List of addresses from the `To` and `Cc` headers.
+    ///
+    /// Addresses are normalized and lowercase.
     pub recipients: Vec<SingleInfo>,
 
+    /// List of addresses from the `To` header.
+    pub to: Vec<SingleInfo>,
+
+    /// List of addresses from the `Chat-Group-Past-Members` header.
+    pub past_members: Vec<SingleInfo>,
+
     /// `From:` address.
     pub from: SingleInfo,
 
@@ -232,6 +240,8 @@ impl MimeMessage {
 
         let mut headers = Default::default();
         let mut recipients = Default::default();
+        let mut to = Default::default();
+        let mut past_members = Default::default();
         let mut from = Default::default();
         let mut list_post = Default::default();
         let mut chat_disposition_notification_to = None;
@@ -241,6 +251,8 @@ impl MimeMessage {
             context,
             &mut headers,
             &mut recipients,
+            &mut to,
+            &mut past_members,
             &mut from,
             &mut list_post,
             &mut chat_disposition_notification_to,
@@ -261,6 +273,8 @@ impl MimeMessage {
                         context,
                         &mut headers,
                         &mut recipients,
+                        &mut to,
+                        &mut past_members,
                         &mut from,
                         &mut list_post,
                         &mut chat_disposition_notification_to,
@@ -456,6 +470,8 @@ impl MimeMessage {
                 context,
                 &mut headers,
                 &mut recipients,
+                &mut to,
+                &mut past_members,
                 &mut inner_from,
                 &mut list_post,
                 &mut chat_disposition_notification_to,
@@ -513,6 +529,8 @@ impl MimeMessage {
             parts: Vec::new(),
             headers,
             recipients,
+            to,
+            past_members,
             list_post,
             from,
             from_is_signed,
@@ -1536,6 +1554,8 @@ impl MimeMessage {
         context: &Context,
         headers: &mut HashMap<String, String>,
         recipients: &mut Vec<SingleInfo>,
+        to: &mut Vec<SingleInfo>,
+        past_members: &mut Vec<SingleInfo>,
         from: &mut Option<SingleInfo>,
         list_post: &mut Option<String>,
         chat_disposition_notification_to: &mut Option<SingleInfo>,
@@ -1564,6 +1584,15 @@ impl MimeMessage {
         if !recipients_new.is_empty() {
             *recipients = recipients_new;
         }
+        let to_addresses = get_all_addresses_from_header(fields, "to");
+        if !to_addresses.is_empty() {
+            *to = to_addresses;
+        }
+        let past_members_addresses =
+            get_all_addresses_from_header(fields, "chat-group-past-members");
+        if !past_members_addresses.is_empty() {
+            *past_members = past_members_addresses;
+        }
         let from_new = get_from(fields);
         if from_new.is_some() {
             *from = from_new;