jsonrpc(feat): Add API to get json encryption info

Add a new api to jsonrpc that returns json structured data about chat encryption.

deltachat-jsonrpc/src/api.rs

@@ -45,7 +45,7 @@ pub mod types;
 
 use num_traits::FromPrimitive;
 use types::account::Account;
-use types::chat::FullChat;
+use types::chat::{EncryptionInfo, FullChat};
 use types::contact::{ContactObject, VcardContact};
 use types::events::Event;
 use types::http::HttpResponse;
@@ -708,6 +708,19 @@ impl CommandApi {
         ChatId::new(chat_id).get_encryption_info(&ctx).await
     }
 
+    /// Get encryption info for a chat.
+    async fn get_chat_encryption_info_json(
+        &self,
+        account_id: u32,
+        chat_id: u32,
+    ) -> Result<EncryptionInfo> {
+        let ctx = self.get_context(account_id).await?;
+        Ok(ChatId::new(chat_id)
+            .get_encryption_info_json(&ctx)
+            .await?
+            .into())
+    }
+
     /// Get QR code text that will offer a [SecureJoin](https://securejoin.delta.chat/) invitation.
     ///
     /// If `chat_id` is a group chat ID, SecureJoin QR code for the group is returned.

deltachat-jsonrpc/src/api/types/chat.rs

@@ -9,6 +9,7 @@ use deltachat::context::Context;
 use num_traits::cast::ToPrimitive;
 use serde::{Deserialize, Serialize};
 use typescript_type_def::TypeDef;
+use yerpc::JsonSchema;
 
 use super::color_int_to_hex_string;
 use super::contact::ContactObject;
@@ -239,3 +240,23 @@ impl JSONRPCChatVisibility {
         }
     }
 }
+
+#[derive(Debug, JsonSchema, TypeDef, Serialize, Deserialize)]
+pub struct EncryptionInfo {
+    /// Addresses with End-to-end encryption preferred.
+    pub mutual: Vec<String>,
+    /// Addresses with End-to-end encryption available.
+    pub no_preference: Vec<String>,
+    /// Addresses with no encryption.
+    pub reset: Vec<String>,
+}
+
+impl From<chat::EncryptionInfo> for EncryptionInfo {
+    fn from(encryption_info: chat::EncryptionInfo) -> Self {
+        EncryptionInfo {
+            mutual: encryption_info.mutual,
+            no_preference: encryption_info.no_preference,
+            reset: encryption_info.reset,
+        }
+    }
+}

src/chat.rs

@@ -105,6 +105,17 @@ pub enum ProtectionStatus {
     ProtectionBroken = 3, // `2` was never used as a value.
 }
 
+/// Encryption info for a single chat.
+#[derive(Debug)]
+pub struct EncryptionInfo {
+    /// Addresses with End-to-end encryption preferred.
+    pub mutual: Vec<String>,
+    /// Addresses with End-to-end encryption available.
+    pub no_preference: Vec<String>,
+    /// Addresses with no encryption.
+    pub reset: Vec<String>,
+}
+
 /// The reason why messages cannot be sent to the chat.
 ///
 /// The reason is mainly for logging and displaying in debug REPL, thus not translated.
@@ -1335,6 +1346,38 @@ impl ChatId {
         Ok(ret.trim().to_string())
     }
 
+    /// Returns encryption preferences of all chat contacts.
+    pub async fn get_encryption_info_json(self, context: &Context) -> Result<EncryptionInfo> {
+        let mut mutual = vec![];
+        let mut no_preference = vec![];
+        let mut reset = vec![];
+
+        for contact_id in get_chat_contacts(context, self)
+            .await?
+            .iter()
+            .filter(|&contact_id| !contact_id.is_special())
+        {
+            let contact = Contact::get_by_id(context, *contact_id).await?;
+            let addr = contact.get_addr().to_string();
+            let peerstate = Peerstate::from_addr(context, &addr).await?;
+
+            match peerstate
+                .filter(|peerstate| peerstate.peek_key(false).is_some())
+                .map(|peerstate| peerstate.prefer_encrypt)
+            {
+                Some(EncryptPreference::Mutual) => mutual.push(addr),
+                Some(EncryptPreference::NoPreference) => no_preference.push(addr),
+                Some(EncryptPreference::Reset) | None => reset.push(addr),
+            };
+        }
+
+        Ok(EncryptionInfo {
+            mutual,
+            no_preference,
+            reset,
+        })
+    }
+
     /// Bad evil escape hatch.
     ///
     /// Avoid using this, eventually types should be cleaned up enough