// Copyright (c) 2024 Mozilla Corporation and contributors. // SPDX-License-Identifier: (Apache-2.0 OR MIT)
use mls_platform_api::mls_group_propose_remove; use mls_platform_api::ClientConfig; use mls_platform_api::MessageOrAck; use mls_platform_api::PlatformError; use mls_platform_api::Received;
// // Scenario // // * Alice, Bob, Charlie and Diana create signing identity (generate_signature_keypair) // * Alice, Bob, Charlie and Diana create credentials (generate_credential_basic) // * Bob and Charlie create key packages (generate_key_package) // * Alice creates a group (group_create) // * Alice adds Bob to the group (group_add) // - Alice receives her add commit (receive for commit) // - Bob joins the group (group_join) // * Bob sends an application message (send) // - Alice receives the application message (receive for application message) // * Bob adds Charlie to the group // - Bob receives the add commit // - Alice receives the add commit // - Charlie joins the group // * Charlie removes Alice from the group (group_remove) // - Charlie receives her remove commit // - Alice receives the remove commit // - Bob receives the remove commit // * Bob produces group update with group info (group_update with external join) // - Bob receives his update commit // - Charlie receives the commit // * Diana sends a commit to do an external join (group_update for external join) // * Diana sends an application message // - Bob receives the commit // - Bob receives Diana's application message // - Charlie receives the commit // - Charlie receives Diana's application message // * Bob sends a self remove proposal to the group (group_propose_remove) // - Diana receives the proposal (receive for proposal) // * Diana produces the commit for the remove proposal // - Diana receives her remove commit // - Charlie receives her remove commit // - Bob receives her remove commit // * Charlie decides that it's enough and closes the group (group_close) // - Diana processes the close commit // - Charlie processes the close commit // * Charlie removes her state for the group (state_delete_group)
#[test] fn main() -> Result<(), PlatformError> { // Default group configuration let group_config = mls_platform_api::GroupConfig::default();
// Storage states letmut state_global = mls_platform_api::state_access("global.db", &[0u8; 32])?;
// Credentials let alice_cred = mls_platform_api::mls_generate_credential_basic("alice".as_bytes())?; let bob_cred = mls_platform_api::mls_generate_credential_basic("bob".as_bytes())?; let charlie_cred = mls_platform_api::mls_generate_credential_basic("charlie".as_bytes())?; let diana_cred = mls_platform_api::mls_generate_credential_basic("diana".as_bytes())?;
// Create signature keypairs and store them in the state let alice_id =
mls_platform_api::mls_generate_signature_keypair(&state_global, group_config.ciphersuite)?;
let bob_id =
mls_platform_api::mls_generate_signature_keypair(&state_global, group_config.ciphersuite)?;
let charlie_id =
mls_platform_api::mls_generate_signature_keypair(&state_global, group_config.ciphersuite)?;
let diana_id =
mls_platform_api::mls_generate_signature_keypair(&state_global, group_config.ciphersuite)?;
// Create Key Package for Bob let bob_kp = mls_platform_api::mls_generate_key_package(
&state_global,
&bob_id,
&bob_cred,
&Default::default(),
)?;
// Create Key Package for Charlie let charlie_kp = mls_platform_api::mls_generate_key_package(
&state_global,
&charlie_id,
&charlie_cred,
&Default::default(),
)?;
// Create a group with Alice let gide = mls_platform_api::mls_group_create(
&mut state_global,
&alice_id,
&alice_cred,
None,
None,
&Default::default(),
)?;
println!("\nGroup created by Alice: {}", hex::encode(&gide.group_id));
// List the members of the group let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &alice_id)?;
println!("Members (alice, before adding bob): {members:?}");
// // Alice adds Bob to a group //
println!("\nAlice adds Bob to the Group"); let commit_output = mls_platform_api::mls_group_add(
&mut state_global,
&gide.group_id,
&alice_id,
vec![bob_kp],
)?;
// Alice process her own commit
println!("\nAlice process her commit to add Bob to the Group");
mls_platform_api::mls_receive(
&state_global,
&alice_id,
&MessageOrAck::MlsMessage(commit_output.commit.clone()),
)?;
// List the members of the group let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &alice_id)?;
println!("Members (alice, after adding bob): {members:?}");
// Bob joins
println!("\nBob joins the group created by Alice");
mls_platform_api::mls_group_join(&state_global, &bob_id, &welcome, None)?;
// List the members of the group let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &bob_id)?;
println!("Members (bob, after joining the group): {members:?}");
// // Bob sends message to alice //
println!("\nBob sends a message to Alice"); let ciphertext = mls_platform_api::mls_send(&state_global, &gide.group_id, &bob_id, b"hello")?;
// Alice receives the message let message = mls_platform_api::mls_receive(
&state_global,
&alice_id,
&MessageOrAck::MlsMessage(ciphertext),
)?; let (_, Received::ApplicationMessage(app_msg)) = message else {
panic!("Expected an application message, but received a different type.");
};
println!( "\nAlice receives the message from Bob: {:?}",
String::from_utf8(app_msg).unwrap()
);
// // Bob adds Charlie //
println!("\nBob adds Charlie to the Group"); let commit_2_output = mls_platform_api::mls_group_add(
&mut state_global,
&gide.group_id,
&bob_id,
vec![charlie_kp],
)?;
let commit_2 = commit_2_output.commit; let welcome_2 = commit_2_output
.welcome
.first()
.expect("No welcome messages found")
.clone();
// Bobs process its commit
println!("\nBob process their Commit");
mls_platform_api::mls_receive(
&state_global,
&bob_id,
&MessageOrAck::MlsMessage(commit_2.clone()),
)?;
// List the members of the group let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &bob_id)?;
println!("Members (bob, after adding charlie): {members:?}");
// Alice receives the commit
println!("\nAlice receives the commit from Bob to add Charlie");
mls_platform_api::mls_receive(
&state_global,
&alice_id,
&MessageOrAck::MlsMessage(commit_2),
)?;
// Charlie joins
println!("\nCharlie joins the group");
mls_platform_api::mls_group_join(&state_global, &charlie_id, &welcome_2, None)?;
// List the members of the group let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &charlie_id)?;
println!("Members (charlie, after joining the group): {members:?}");
// // Charlie removes Alice from the group //
println!("\nCharlie removes Alice from the Group"); let commit_3_output =
mls_platform_api::mls_group_remove(&state_global, &gide.group_id, &charlie_id, &alice_id)?;
let commit_3 = commit_3_output.commit;
// Charlie receives the commit
mls_platform_api::mls_receive(
&state_global,
&charlie_id,
&MessageOrAck::Ack(gide.group_id.to_vec()),
)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &charlie_id)?;
println!("Members (charlie, after removing alice): {members:?}");
// Alice receives the commit from Charlie
println!("\nAlice receives the remove commit from Charlie"); let _ = mls_platform_api::mls_receive(
&state_global,
&alice_id,
&MessageOrAck::MlsMessage(commit_3.clone()),
)?;
println!("Members (alice, after receiving alice's removal the group): {members:?}");
println!("Alice's state for the group has been removed");
// Bob receives the commit from Charlie
println!("\nBob receives the remove commit from Charlie"); let _ = mls_platform_api::mls_receive(
&state_global,
&bob_id,
&MessageOrAck::MlsMessage(commit_3.clone()),
)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &bob_id)?;
println!("Members (bob, after receiving alice's removal the group): {members:?}");
// // Bob produces group info to allow an external join from Diana // let client_config = ClientConfig {
allow_external_commits: true,
..Default::default()
};
println!("\nBob produce a group info so that someone can do an External join"); let commit_4_output = mls_platform_api::mls_group_update(
&mut state_global,
&gide.group_id,
&bob_id,
None,
None,
None,
&client_config,
)?;
// Bob receives own commit
mls_platform_api::mls_receive(
&state_global,
&bob_id,
&MessageOrAck::MlsMessage(commit_4_output.commit.clone()),
)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &bob_id)?;
println!("Members (bob, after commit allowing external join): {members:?}");
// Charlie receives Bob's commit with GroupInfo for External Join
mls_platform_api::mls_receive(
&state_global,
&charlie_id,
&MessageOrAck::MlsMessage(commit_4_output.commit),
)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &charlie_id)?;
println!("Members (charlie, after bob's commit allowing external join): {members:?}");
// // Diana joins the group with an external commit //
println!("\nDiana uses the group info created by Bob to do an External join"); let external_commit_output = mls_platform_api::mls_group_external_commit(
&state_global,
&diana_id,
&diana_cred,
&commit_4_output
.group_info
.expect("alice should produce group info"), // use tree in extension for now
None,
)?;
println!("Externally joined group {:?}", &external_commit_output.gid);
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &diana_id)?;
println!("Members (diane, after joining): {members:?}");
// // Diana sends a message to the group //
println!("\nDiana sends a message to the group"); let ctx = mls_platform_api::mls_send(
&state_global,
&gide.group_id,
&diana_id,
b"hello from diana",
)?;
// Bob receives Diana's commit
println!("\nBob receives the External Join from Diana");
mls_platform_api::mls_receive(
&state_global,
&bob_id,
&MessageOrAck::MlsMessage(external_commit_output.external_commit.clone()),
)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &diana_id)?;
println!("Members (bob, after diane joined externally): {members:?}");
// Bob receives Diana's application message let ptx = mls_platform_api::mls_receive(
&state_global,
&bob_id,
&MessageOrAck::MlsMessage(ctx.clone()),
)?;
let (_, Received::ApplicationMessage(app_msg)) = ptx else {
panic!("Expected an application message, but received a different type.");
};
// Charlie receives Diana's commit
println!("\nCharlie receives the External Join from Diana");
mls_platform_api::mls_receive(
&state_global,
&charlie_id,
&MessageOrAck::MlsMessage(external_commit_output.external_commit),
)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &charlie_id)?;
println!("Members (charlie, after diane joined externally): {members:?}");
// Charlie receives Diana's application message let ptx =
mls_platform_api::mls_receive(&state_global, &charlie_id, &MessageOrAck::MlsMessage(ctx))?;
let (_, Received::ApplicationMessage(app_msg)) = ptx else {
panic!("Expected an application message, but received a different type.");
};
// // Bob proposes to remove itself //
println!("\nBob proposes a self remove"); let self_remove_proposal =
mls_group_propose_remove(&state_global, &gide.group_id, &bob_id, &bob_id)?;
// // Diana receives the proposal from Bob //
println!("\nDiana commits to the remove"); let received_5_output = mls_platform_api::mls_receive(
&state_global,
&diana_id,
&MessageOrAck::MlsMessage(self_remove_proposal.clone()),
)?;
let (_, Received::CommitOutput(commit_5_output)) = received_5_output else {
panic!("Expected an application message, but received a different type.");
};
let commit_5_msg = MessageOrAck::MlsMessage(commit_5_output.commit);
// Diana processes the remove commit
println!("\nDiana processes the remove commit");
mls_platform_api::mls_receive(&state_global, &diana_id, &commit_5_msg)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &diana_id)?;
println!("Members (diana, after removing bob): {members:?}");
// Charlie processes the remove commit
println!("\nCharlie processes the remove commit");
mls_platform_api::mls_receive(
&state_global,
&charlie_id,
&MessageOrAck::MlsMessage(self_remove_proposal),
)?;
mls_platform_api::mls_receive(&state_global, &charlie_id, &commit_5_msg)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &charlie_id)?;
println!("Members (charlie, after removing bob): {members:?}");
// Bob processes the remove commit
println!("\nBob processes the remove commit"); let received_5_bob = mls_platform_api::mls_receive(&state_global, &bob_id, &commit_5_msg)?;
let (_, Received::GroupIdEpoch(out_commit_5_bob)) = received_5_bob else {
panic!("Expected a different type.");
};
println!("Bob, out_commit_5 {out_commit_5_bob:?}");
println!("Bob's state for the group has been removed");
// Note: Bob cannot look at its own group state because it was already removed // let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &bob_id)?; // let members_str = mls_platform_api::utils_json_bytes_to_string_custom(&members)?; // println!("Members (bob, after its removal): {members_str:?}");
// // Charlie decides that it's enough and closes the group //
println!("\nCharlie decides that it's enough and closes the group"); let commit_output_6_bytes =
mls_platform_api::mls_group_close(&state_global, &gide.group_id, &charlie_id)?;
let commit_6_msg = MessageOrAck::MlsMessage(commit_output_6_bytes.commit);
// Diana processes the close commit
println!("\nDiana processes the close commit"); let received_6_diana = mls_platform_api::mls_receive(&state_global, &diana_id, &commit_6_msg)?;
let (_, Received::GroupIdEpoch(out_commit_6_diana)) = received_6_diana else {
panic!("Expected a different type.");
};
println!("Diana, out_commit_6 {out_commit_6_diana:?}");
println!("Diana's state for the group has been removed"); // Note: Diana cannot look at its own group state because it was already removed
// Charlie processes the close commit
println!("\nCharlie processes the close commit");
mls_platform_api::mls_receive(&state_global, &charlie_id, &commit_6_msg)?;
let members = mls_platform_api::mls_group_members(&state_global, &gide.group_id, &charlie_id)?;
println!("Members (charlie, after processing their group_close commit): {members:?}");
// Charlie deletes her state for the group
println!("\nCharlie deletes her state"); let out = mls_platform_api::state_delete_group(&state_global, &gide.group_id, &charlie_id)?;
println!("Charlie, group deletion confirmation {out:?}");
Ok(())
}
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