crypto: Turn the content_to_request function into a constructor

Closes: #260

matrix_sdk_crypto/src/requests.rs

@@ -12,8 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#![allow(missing_docs)]
-
 use std::{collections::BTreeMap, sync::Arc, time::Duration};
 
 use matrix_sdk_common::uuid::Uuid;
@@ -32,7 +30,7 @@ use ruma::{
         message::send_message_event::Response as RoomMessageResponse,
         to_device::{send_event_to_device::Response as ToDeviceResponse, DeviceIdOrAllDevices},
     },
-    events::{AnyMessageEventContent, EventType},
+    events::{AnyMessageEventContent, AnyToDeviceEventContent, EventContent, EventType},
     DeviceIdBox, RoomId, UserId,
 };
 use serde::{Deserialize, Serialize};
@@ -60,6 +58,35 @@ pub struct ToDeviceRequest {
 }
 
 impl ToDeviceRequest {
+    /// Create a new owned to-device request
+    ///
+    /// # Arguments
+    ///
+    /// * `recipient` - The ID of the user that should receive this to-device
+    /// event.
+    ///
+    /// * `recipient_device` - The device that should receive this to-device
+    /// event, or all devices.
+    ///
+    /// * `content` - The content of the to-device event.
+    pub(crate) fn new(
+        recipient: &UserId,
+        recipient_device: impl Into<DeviceIdOrAllDevices>,
+        content: AnyToDeviceEventContent,
+    ) -> Self {
+        let mut messages = BTreeMap::new();
+        let mut user_messages = BTreeMap::new();
+
+        user_messages.insert(
+            recipient_device.into(),
+            serde_json::value::to_raw_value(&content).expect("Can't serialize to-device content"),
+        );
+        messages.insert(recipient.clone(), user_messages);
+        let event_type = EventType::from(content.event_type());
+
+        ToDeviceRequest { txn_id: Uuid::new_v4(), event_type, messages }
+    }
+
     /// Gets the transaction ID as a string.
     pub fn txn_id_string(&self) -> String {
         self.txn_id.to_string()
@@ -133,6 +160,8 @@ pub enum OutgoingRequests {
     /// Signature upload request, this request is used after a successful device
     /// or user verification is done.
     SignatureUpload(SignatureUploadRequest),
+    /// A room message request, usually for sending in-room interactive
+    /// verification events.
     RoomMessage(RoomMessageRequest),
 }
 
@@ -205,9 +234,9 @@ pub enum IncomingResponse<'a> {
     /// The cross signing keys upload response, marking our private cross
     /// signing identity as shared.
     SigningKeysUpload(&'a SigningKeysUploadResponse),
-    /// The cross signing keys upload response, marking our private cross
-    /// signing identity as shared.
+    /// The cross signing signature upload response.
     SignatureUpload(&'a SignatureUploadResponse),
+    /// A room message response, usually for interactive verifications.
     RoomMessage(&'a RoomMessageResponse),
 }
 
@@ -270,6 +299,7 @@ impl OutgoingRequest {
     }
 }
 
+/// Customized owned request type for sending out room messages.
 #[derive(Clone, Debug)]
 pub struct RoomMessageRequest {
     /// The room to send the event to.
@@ -286,13 +316,17 @@ pub struct RoomMessageRequest {
     pub content: AnyMessageEventContent,
 }
 
+/// An enum over the different outgoing verification based requests.
 #[derive(Clone, Debug)]
 pub enum OutgoingVerificationRequest {
+    /// The to-device verification request variant.
     ToDevice(ToDeviceRequest),
+    /// The in-room verification request variant.
     InRoom(RoomMessageRequest),
 }
 
 impl OutgoingVerificationRequest {
+    /// Get the unique id of this request.
     pub fn request_id(&self) -> Uuid {
         match self {
             OutgoingVerificationRequest::ToDevice(t) => t.txn_id,

matrix_sdk_crypto/src/verification/cache.rs

@@ -18,8 +18,8 @@ use dashmap::DashMap;
 use matrix_sdk_common::uuid::Uuid;
 use ruma::{DeviceId, UserId};
 
-use super::{event_enums::OutgoingContent, sas::content_to_request, Sas, Verification};
-use crate::{OutgoingRequest, QrVerification, RoomMessageRequest};
+use super::{event_enums::OutgoingContent, Sas, Verification};
+use crate::{OutgoingRequest, QrVerification, RoomMessageRequest, ToDeviceRequest};
 
 #[derive(Clone, Debug)]
 pub struct VerificationCache {
@@ -125,7 +125,7 @@ impl VerificationCache {
     ) {
         match content {
             OutgoingContent::ToDevice(c) => {
-                let request = content_to_request(recipient, recipient_device.to_owned(), c);
+                let request = ToDeviceRequest::new(recipient, recipient_device.to_owned(), c);
                 let request_id = request.txn_id;
 
                 let request = OutgoingRequest { request_id, request: Arc::new(request.into()) };

matrix_sdk_crypto/src/verification/machine.rs

@@ -23,7 +23,7 @@ use super::{
     cache::VerificationCache,
     event_enums::{AnyEvent, AnyVerificationContent, OutgoingContent},
     requests::VerificationRequest,
-    sas::{content_to_request, Sas},
+    sas::Sas,
     FlowId, Verification, VerificationResult,
 };
 use crate::{
@@ -31,6 +31,7 @@ use crate::{
     requests::OutgoingRequest,
     store::{CryptoStore, CryptoStoreError},
     OutgoingVerificationRequest, ReadOnlyAccount, ReadOnlyDevice, RoomMessageRequest,
+    ToDeviceRequest,
 };
 
 #[derive(Clone, Debug)]
@@ -79,7 +80,7 @@ impl VerificationMachine {
             }
             OutgoingContent::ToDevice(c) => {
                 let request =
-                    content_to_request(device.user_id(), device.device_id().to_owned(), c);
+                    ToDeviceRequest::new(device.user_id(), device.device_id().to_owned(), c);
 
                 self.verifications.insert_sas(sas.clone());
 

matrix_sdk_crypto/src/verification/qrcode.rs

@@ -39,14 +39,13 @@ use thiserror::Error;
 
 use super::{
     event_enums::{DoneContent, OutgoingContent, OwnedStartContent, StartContent},
-    sas::content_to_request,
     Cancelled, Done, FlowId, IdentitiesBeingVerified, VerificationResult,
 };
 use crate::{
     olm::{PrivateCrossSigningIdentity, ReadOnlyAccount},
     store::CryptoStore,
     CryptoStoreError, OutgoingVerificationRequest, ReadOnlyDevice, RoomMessageRequest,
-    UserIdentities,
+    ToDeviceRequest, UserIdentities,
 };
 
 const SECRET_SIZE: usize = 16;
@@ -201,7 +200,7 @@ impl QrVerification {
             OutgoingContent::Room(room_id, content) => {
                 RoomMessageRequest { room_id, txn_id: Uuid::new_v4(), content }.into()
             }
-            OutgoingContent::ToDevice(c) => content_to_request(
+            OutgoingContent::ToDevice(c) => ToDeviceRequest::new(
                 self.identities.other_user_id(),
                 self.identities.other_device_id().to_owned(),
                 c,

matrix_sdk_crypto/src/verification/requests.rs

@@ -41,7 +41,6 @@ use super::{
         CancelContent, DoneContent, OutgoingContent, ReadyContent, RequestContent, StartContent,
     },
     qrcode::{QrVerification, ScanError},
-    sas::content_to_request,
     Cancelled, FlowId, IdentitiesBeingVerified,
 };
 use crate::{
@@ -268,7 +267,7 @@ impl VerificationRequest {
 
         inner.accept().map(|c| match c {
             OutgoingContent::ToDevice(content) => {
-                self.content_to_request(inner.other_device_id(), content).into()
+                ToDeviceRequest::new(&self.other_user(), inner.other_device_id(), content).into()
             }
             OutgoingContent::Room(room_id, content) => {
                 RoomMessageRequest { room_id, txn_id: Uuid::new_v4(), content }.into()
@@ -337,14 +336,6 @@ impl VerificationRequest {
             _ => None,
         }
     }
-
-    fn content_to_request(
-        &self,
-        other_device_id: DeviceIdOrAllDevices,
-        content: AnyToDeviceEventContent,
-    ) -> ToDeviceRequest {
-        content_to_request(&self.other_user_id, other_device_id, content)
-    }
 }
 
 #[derive(Clone, Debug)]

matrix_sdk_crypto/src/verification/sas/helpers.rs

@@ -14,17 +14,15 @@
 
 use std::{collections::BTreeMap, convert::TryInto};
 
-use matrix_sdk_common::uuid::Uuid;
 use olm_rs::sas::OlmSas;
 use ruma::{
-    api::client::r0::to_device::DeviceIdOrAllDevices,
     events::{
         key::verification::{
             cancel::CancelCode,
             mac::{MacEventContent, MacToDeviceEventContent},
             Relation,
         },
-        AnyMessageEventContent, AnyToDeviceEventContent, EventType,
+        AnyMessageEventContent, AnyToDeviceEventContent,
     },
     DeviceKeyAlgorithm, DeviceKeyId, UserId,
 };
@@ -36,7 +34,7 @@ use crate::{
     identities::{ReadOnlyDevice, UserIdentities},
     utilities::encode,
     verification::event_enums::{MacContent, StartContent},
-    ReadOnlyAccount, ToDeviceRequest,
+    ReadOnlyAccount,
 };
 
 #[derive(Clone, Debug)]
@@ -527,34 +525,6 @@ fn bytes_to_decimal(bytes: Vec<u8>) -> (u16, u16, u16) {
     (first + 1000, second + 1000, third + 1000)
 }
 
-pub fn content_to_request(
-    recipient: &UserId,
-    recipient_device: impl Into<DeviceIdOrAllDevices>,
-    content: AnyToDeviceEventContent,
-) -> ToDeviceRequest {
-    let mut messages = BTreeMap::new();
-    let mut user_messages = BTreeMap::new();
-
-    user_messages.insert(
-        recipient_device.into(),
-        serde_json::value::to_raw_value(&content).expect("Can't serialize to-device content"),
-    );
-    messages.insert(recipient.clone(), user_messages);
-
-    let event_type = match content {
-        AnyToDeviceEventContent::KeyVerificationAccept(_) => EventType::KeyVerificationAccept,
-        AnyToDeviceEventContent::KeyVerificationStart(_) => EventType::KeyVerificationStart,
-        AnyToDeviceEventContent::KeyVerificationKey(_) => EventType::KeyVerificationKey,
-        AnyToDeviceEventContent::KeyVerificationMac(_) => EventType::KeyVerificationMac,
-        AnyToDeviceEventContent::KeyVerificationCancel(_) => EventType::KeyVerificationCancel,
-        AnyToDeviceEventContent::KeyVerificationReady(_) => EventType::KeyVerificationReady,
-        AnyToDeviceEventContent::KeyVerificationDone(_) => EventType::KeyVerificationDone,
-        _ => unreachable!(),
-    };
-
-    ToDeviceRequest { txn_id: Uuid::new_v4(), event_type, messages }
-}
-
 #[cfg(test)]
 mod test {
     use proptest::prelude::*;

matrix_sdk_crypto/src/verification/sas/mod.rs

@@ -20,7 +20,6 @@ use std::sync::{Arc, Mutex};
 #[cfg(test)]
 use std::time::Instant;
 
-pub use helpers::content_to_request;
 use inner_sas::InnerSas;
 use matrix_sdk_common::uuid::Uuid;
 use ruma::{
@@ -442,7 +441,7 @@ impl Sas {
     }
 
     pub(crate) fn content_to_request(&self, content: AnyToDeviceEventContent) -> ToDeviceRequest {
-        content_to_request(self.other_user_id(), self.other_device_id().to_owned(), content)
+        ToDeviceRequest::new(self.other_user_id(), self.other_device_id().to_owned(), content)
     }
 }