address code review issues

matrix_sdk/README.md

@@ -45,6 +45,8 @@ More examples can be found in the [examples] directory.
 The following crate feature flags are available:
 
 * `encryption`: Enables end-to-end encryption support in the library.
+* `qrcode`: Enables qrcode verification support in the library. This will also
+  enable `encryption`. Enabled by default.
 * `sled_cryptostore`: Enables a Sled based store for the encryption keys. If
   this is disabled and `encryption` support is enabled the keys will by
   default be stored only in memory and thus lost after the client is

matrix_sdk/src/identities/devices.rs

@@ -55,7 +55,8 @@ impl Device {
     /// The default methods that are supported are `m.sas.v1` and
     /// `m.qr_code.show.v1`, if this isn't desirable the
     /// [`request_verification_with_methods()`] method can be used to override
-    /// this.
+    /// this. `m.qr_code.show.v1` is only avaliable if the `qrcode` feature is
+    /// enabled, which it is by default.
     ///
     /// # Examples
     ///

matrix_sdk/src/identities/users.rs

@@ -82,7 +82,8 @@ impl UserIdentity {
     /// The default methods that are supported are `m.sas.v1` and
     /// `m.qr_code.show.v1`, if this isn't desirable the
     /// [`request_verification_with_methods()`] method can be used to override
-    /// this.
+    /// this. `m.qr_code.show.v1` is only avaliable if the `qrcode` feature is
+    /// enabled, which it is by default.
     ///
     /// # Examples
     ///

matrix_sdk_crypto/src/lib.rs

@@ -48,6 +48,7 @@ pub use identities::{
 };
 pub use machine::OlmMachine;
 #[cfg(feature = "qrcode")]
+#[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
 pub use matrix_qrcode;
 pub(crate) use olm::ReadOnlyAccount;
 pub use olm::{CrossSigningStatus, EncryptionSettings};
@@ -57,5 +58,6 @@ pub use requests::{
 };
 pub use store::{CrossSigningKeyExport, CryptoStoreError, SecretImportError};
 #[cfg(feature = "qrcode")]
+#[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
 pub use verification::QrVerification;
 pub use verification::{AcceptSettings, CancelInfo, Sas, Verification, VerificationRequest};

matrix_sdk_crypto/src/verification/cache.rs

@@ -55,11 +55,13 @@ impl VerificationCache {
     }
 
     #[cfg(feature = "qrcode")]
+    #[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
     pub fn insert_qr(&self, qr: QrVerification) {
         self.insert(qr)
     }
 
     #[cfg(feature = "qrcode")]
+    #[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
     pub fn get_qr(&self, sender: &UserId, flow_id: &str) -> Option<QrVerification> {
         self.get(sender, flow_id).and_then(|v| {
             if let Verification::QrV1(qr) = v {

matrix_sdk_crypto/src/verification/mod.rs

@@ -29,6 +29,7 @@ use event_enums::OutgoingContent;
 pub use machine::VerificationMachine;
 use matrix_sdk_common::locks::Mutex;
 #[cfg(feature = "qrcode")]
+#[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
 pub use qrcode::QrVerification;
 pub use requests::VerificationRequest;
 use ruma::{
@@ -118,6 +119,7 @@ pub enum Verification {
     /// The `m.sas.v1` verification variant.
     SasV1(Sas),
     #[cfg(feature = "qrcode")]
+    #[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
     /// The `m.qr_code.*.v1` verification variant.
     QrV1(QrVerification),
 }
@@ -134,6 +136,7 @@ impl Verification {
     }
 
     #[cfg(feature = "qrcode")]
+    #[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
     /// Try to deconstruct this verification enum into a QR code verification.
     pub fn qr_v1(self) -> Option<QrVerification> {
         if let Verification::QrV1(qr) = self {
@@ -205,6 +208,7 @@ impl From<Sas> for Verification {
 }
 
 #[cfg(feature = "qrcode")]
+#[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
 impl From<QrVerification> for Verification {
     fn from(qr: QrVerification) -> Self {
         Self::QrV1(qr)

matrix_sdk_crypto/src/verification/requests.rs

@@ -59,6 +59,7 @@ use crate::{
 
 const SUPPORTED_METHODS: &[VerificationMethod] = &[
     VerificationMethod::SasV1,
+    #[cfg(feature = "qrcode")]
     VerificationMethod::QrCodeShowV1,
     VerificationMethod::ReciprocateV1,
 ];
@@ -307,6 +308,7 @@ impl VerificationRequest {
     }
 
     #[cfg(feature = "qrcode")]
+    #[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
     /// Generate a QR code that can be used by another client to start a QR code
     /// based verification.
     pub async fn generate_qr_code(&self) -> Result<Option<QrVerification>, CryptoStoreError> {
@@ -318,6 +320,7 @@ impl VerificationRequest {
     }
     ///
     #[cfg(feature = "qrcode")]
+    #[cfg_attr(feature = "docs", doc(cfg(qrcode)))]
     /// Start a QR code verification by providing a scanned QR code for this
     /// verification flow.
     ///
@@ -408,8 +411,11 @@ impl VerificationRequest {
     /// This method will accept the request and signal that it supports the
     /// `m.sas.v1`, the `m.qr_code.show.v1`, and `m.reciprocate.v1` method.
     ///
-    /// If QR code scanning should be supported or QR code showing shouldn't be
-    /// supported the [`accept_with_methods()`] method should be used instead.
+    /// `m.qr_code.show.v1` will only be signaled if the `qrcode` feature is
+    /// enabled. This feature is disabled by default. If it's enabeled and QR
+    /// code scanning should be supported or QR code showing shouldn't be
+    /// supported the [`accept_with_methods()`] method should be used
+    /// instead.
     ///
     /// [`accept_with_methods()`]: #method.accept_with_methods
     pub fn accept(&self) -> Option<OutgoingVerificationRequest> {