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member_info.rs
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use crate::room_state::member::MemberId;
use crate::room_state::ChatRoomParametersV1;
use crate::room_state::ChatRoomStateV1;
use crate::util::{sign_struct, verify_struct};
use ed25519_dalek::{Signature, SigningKey, VerifyingKey};
use freenet_scaffold::ComposableState;
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
#[derive(Clone, Debug, PartialEq, Serialize, Deserialize, Default)]
pub struct MemberInfoV1 {
pub member_info: Vec<AuthorizedMemberInfo>,
}
impl ComposableState for MemberInfoV1 {
type ParentState = ChatRoomStateV1;
type Summary = HashMap<MemberId, u32>;
type Delta = Vec<AuthorizedMemberInfo>;
type Parameters = ChatRoomParametersV1;
fn verify(
&self,
parent_state: &Self::ParentState,
parameters: &Self::Parameters,
) -> Result<(), String> {
let members_by_id = parent_state.members.members_by_member_id();
let owner_id = parameters.owner_id();
for member_info in &self.member_info {
let member_id = member_info.member_info.member_id;
if member_id == owner_id {
// If this is the owner's member info, verify against owner's key
member_info.verify_signature(parameters)?;
} else {
// For non-owner members, verify they exist in members list
let member = members_by_id.get(&member_id).ok_or_else(|| {
format!("MemberInfo exists for non-existent member: {:?}", member_id)
})?;
// Verify the signature with member's key
member_info.verify_signature_with_key(&member.member.member_vk)?;
}
}
Ok(())
}
fn summarize(
&self,
_parent_state: &Self::ParentState,
_parameters: &Self::Parameters,
) -> Self::Summary {
self.member_info
.iter()
.map(|info| (info.member_info.member_id, info.member_info.version))
.collect()
}
fn delta(
&self,
_parent_state: &Self::ParentState,
_parameters: &Self::Parameters,
old_state_summary: &Self::Summary,
) -> Option<Self::Delta> {
let delta: Vec<AuthorizedMemberInfo> = self
.member_info
.iter()
.filter(|info| {
// Include if member doesn't exist in old summary OR has a newer version
!old_state_summary.contains_key(&info.member_info.member_id)
|| info.member_info.version
> *old_state_summary.get(&info.member_info.member_id).unwrap()
})
.cloned()
.collect();
if delta.is_empty() {
None
} else {
Some(delta)
}
}
fn apply_delta(
&mut self,
parent_state: &Self::ParentState,
parameters: &Self::Parameters,
delta: &Option<Self::Delta>,
) -> Result<(), String> {
if let Some(delta) = delta {
for member_info in delta {
let member_id = &member_info.member_info.member_id;
// Check if this is the room owner
if *member_id == parameters.owner_id() {
// If it's the owner, verify against the room owner's key
member_info.verify_signature(parameters)?;
} else {
// For non-owners, verify they exist and check their signature
let members = parent_state.members.members_by_member_id();
let member = members.get(member_id).ok_or_else(|| {
format!("MemberInfo exists for non-existent member: {:?}", member_id)
})?;
member_info.verify_signature_with_key(&member.member.member_vk)?;
}
// Update or add the member info
if let Some(existing_info) = self
.member_info
.iter_mut()
.find(|info| info.member_info.member_id == *member_id)
{
if member_info.member_info.version > existing_info.member_info.version {
*existing_info = member_info.clone();
}
} else {
self.member_info.push(member_info.clone());
}
}
}
// Always remove any member info that is not in parent_state.members
let member_map = parent_state.members.members_by_member_id();
self.member_info.retain(|info| {
parameters.owner_id() == info.member_info.member_id
|| member_map.contains_key(&info.member_info.member_id)
});
Ok(())
}
}
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct AuthorizedMemberInfo {
pub member_info: MemberInfo,
pub signature: Signature,
}
impl AuthorizedMemberInfo {
pub fn new(member_info: MemberInfo, owner_signing_key: &SigningKey) -> Self {
let signature = sign_struct(&member_info, owner_signing_key);
Self {
member_info,
signature,
}
}
pub fn new_with_member_key(member_info: MemberInfo, member_signing_key: &SigningKey) -> Self {
let signature = sign_struct(&member_info, member_signing_key);
Self {
member_info,
signature,
}
}
pub fn verify_signature(&self, parameters: &ChatRoomParametersV1) -> Result<(), String> {
self.verify_signature_with_key(¶meters.owner)
}
pub fn verify_signature_with_key(&self, verifying_key: &VerifyingKey) -> Result<(), String> {
verify_struct(&self.member_info, &self.signature, verifying_key)
.map_err(|e| format!("Invalid signature: {}", e))
}
// Helper method for tests
#[cfg(test)]
pub fn with_invalid_signature(mut self) -> Self {
self.signature = Signature::from_bytes(&[0; 64]);
self
}
}
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct MemberInfo {
pub member_id: MemberId,
pub version: u32,
pub preferred_nickname: String,
}
#[cfg(test)]
mod tests {
use super::*;
use crate::room_state::member::{AuthorizedMember, Member};
use ed25519_dalek::{Signer, SigningKey};
use rand::rngs::OsRng;
fn create_test_member_info(member_id: MemberId) -> MemberInfo {
MemberInfo {
member_id,
version: 1,
preferred_nickname: "TestUser".to_string(),
}
}
#[test]
fn test_member_info_v1_default() {
let default_member_info = MemberInfoV1::default();
assert!(default_member_info.member_info.is_empty());
}
#[test]
fn test_member_info_v1_verify() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let owner_verifying_key = owner_signing_key.verifying_key();
let owner_id = owner_verifying_key.into();
let member_signing_key = SigningKey::generate(&mut OsRng);
let member_verifying_key = member_signing_key.verifying_key();
let member_id = member_verifying_key.into();
let member_info = create_test_member_info(member_id);
let authorized_member_info = AuthorizedMemberInfo::new(member_info, &member_signing_key);
let mut member_info_v1 = MemberInfoV1::default();
member_info_v1
.member_info
.push(authorized_member_info.clone());
let mut parent_state = ChatRoomStateV1::default();
let member = Member {
owner_member_id: owner_id,
invited_by: owner_id,
member_vk: member_verifying_key,
};
let authorized_member = AuthorizedMember::new(member, &owner_signing_key);
parent_state.members.members.push(authorized_member);
let parameters = ChatRoomParametersV1 {
owner: owner_verifying_key,
};
let result = member_info_v1.verify(&parent_state, ¶meters);
assert!(
result.is_ok(),
"Verification failed: {}",
result.unwrap_err()
);
// Test with non-existent member
let non_existent_member_id = SigningKey::generate(&mut OsRng).verifying_key().into();
let non_existent_member_info = create_test_member_info(non_existent_member_id);
let non_existent_authorized_member_info =
AuthorizedMemberInfo::new(non_existent_member_info, &owner_signing_key);
member_info_v1
.member_info
.push(non_existent_authorized_member_info);
let verify_result = member_info_v1.verify(&parent_state, ¶meters);
assert!(
verify_result.is_err(),
"Expected verification to fail, but it succeeded"
);
if let Err(err) = verify_result {
assert!(
err.contains("MemberInfo exists for non-existent member"),
"Unexpected error message: {}",
err
);
}
// Test with invalid signature
let invalid_authorized_member_info = authorized_member_info.with_invalid_signature();
member_info_v1.member_info.clear();
member_info_v1
.member_info
.push(invalid_authorized_member_info);
let verify_result = member_info_v1.verify(&parent_state, ¶meters);
assert!(
verify_result.is_err(),
"Expected verification to fail, but it succeeded"
);
if let Err(err) = verify_result {
assert!(
err.contains("Invalid signature"),
"Unexpected error message: {}",
err
);
}
}
#[test]
fn test_member_info_v1_summarize() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let member_id = SigningKey::generate(&mut OsRng).verifying_key().into();
let member_info = create_test_member_info(member_id);
let authorized_member_info = AuthorizedMemberInfo::new(member_info, &owner_signing_key);
let mut member_info_v1 = MemberInfoV1::default();
member_info_v1.member_info.push(authorized_member_info);
let parent_state = ChatRoomStateV1::default();
let parameters = ChatRoomParametersV1 {
owner: owner_signing_key.verifying_key(),
};
let summary = member_info_v1.summarize(&parent_state, ¶meters);
assert_eq!(summary.len(), 1);
assert!(summary.contains_key(&member_id));
assert_eq!(*summary.get(&member_id).unwrap(), 1); // Version should be 1
}
#[test]
fn test_member_info_v1_delta() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let member_id1 = SigningKey::generate(&mut OsRng).verifying_key().into();
let member_id2 = SigningKey::generate(&mut OsRng).verifying_key().into();
let member_info1 = create_test_member_info(member_id1);
let member_info2 = create_test_member_info(member_id2);
let authorized_member_info1 = AuthorizedMemberInfo::new(member_info1, &owner_signing_key);
let authorized_member_info2 = AuthorizedMemberInfo::new(member_info2, &owner_signing_key);
let mut member_info_v1 = MemberInfoV1::default();
member_info_v1.member_info.push(authorized_member_info1);
member_info_v1.member_info.push(authorized_member_info2);
let parent_state = ChatRoomStateV1::default();
let parameters = ChatRoomParametersV1 {
owner: owner_signing_key.verifying_key(),
};
// Create a HashMap with member_id1 and version 1
let mut old_summary = HashMap::new();
old_summary.insert(member_id1, 1);
let delta = member_info_v1.delta(&parent_state, ¶meters, &old_summary);
assert!(delta.is_some());
let delta = delta.unwrap();
assert_eq!(delta.len(), 1);
assert_eq!(delta[0].member_info.member_id, member_id2);
}
#[test]
fn test_member_info_v1_apply_delta() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let owner_verifying_key = owner_signing_key.verifying_key();
let owner_id = owner_verifying_key.into();
let member_signing_key = SigningKey::generate(&mut OsRng);
let member_verifying_key = member_signing_key.verifying_key();
let member_id = member_verifying_key.into();
let member_info = create_test_member_info(member_id);
let authorized_member_info =
AuthorizedMemberInfo::new_with_member_key(member_info, &member_signing_key);
let mut member_info_v1 = MemberInfoV1::default();
let delta = vec![authorized_member_info.clone()];
let mut parent_state = ChatRoomStateV1::default();
parent_state.members.members.push(AuthorizedMember {
member: Member {
owner_member_id: owner_id,
invited_by: owner_id,
member_vk: member_verifying_key,
},
signature: owner_signing_key
.sign("TestUser".as_bytes())
.to_bytes()
.into(),
});
let parameters = ChatRoomParametersV1 {
owner: owner_verifying_key,
};
// Test applying delta with a new member
println!("Applying delta with a new member");
let result = member_info_v1.apply_delta(&parent_state, ¶meters, &Some(delta));
println!("Result: {:?}", result);
assert!(result.is_ok(), "Failed to apply delta: {:?}", result.err());
assert_eq!(member_info_v1.member_info.len(), 1);
assert_eq!(member_info_v1.member_info[0], authorized_member_info);
// Test applying delta with an existing member (update)
println!("Applying delta with an existing member (update)");
let mut updated_member_info = create_test_member_info(member_id);
updated_member_info.version = 2;
updated_member_info.preferred_nickname = "UpdatedNickname".to_string();
let updated_authorized_member_info =
AuthorizedMemberInfo::new_with_member_key(updated_member_info, &member_signing_key);
let update_delta = vec![updated_authorized_member_info.clone()];
let result = member_info_v1.apply_delta(&parent_state, ¶meters, &Some(update_delta));
println!("Result: {:?}", result);
assert!(
result.is_ok(),
"Failed to apply update delta: {:?}",
result.err()
);
assert_eq!(member_info_v1.member_info.len(), 1);
assert_eq!(
member_info_v1.member_info[0],
updated_authorized_member_info
);
// Test applying delta with a non-existent member
println!("Applying delta with a non-existent member");
let non_existent_member_id = SigningKey::generate(&mut OsRng).verifying_key().into();
let non_existent_member_info = create_test_member_info(non_existent_member_id);
let non_existent_authorized_member_info = AuthorizedMemberInfo::new_with_member_key(
non_existent_member_info,
&SigningKey::generate(&mut OsRng),
);
let non_existent_delta = vec![non_existent_authorized_member_info];
let result =
member_info_v1.apply_delta(&parent_state, ¶meters, &Some(non_existent_delta));
println!("Result: {:?}", result);
assert!(result.is_err());
// Test applying delta with an older version (should not update)
println!("Applying delta with an older version");
let mut older_member_info = create_test_member_info(member_id);
older_member_info.version = 1;
let older_authorized_member_info =
AuthorizedMemberInfo::new_with_member_key(older_member_info, &member_signing_key);
let older_delta = vec![older_authorized_member_info];
let result = member_info_v1.apply_delta(&parent_state, ¶meters, &Some(older_delta));
println!("Result: {:?}", result);
assert!(
result.is_ok(),
"Failed to apply older version delta: {:?}",
result.err()
);
assert_eq!(member_info_v1.member_info.len(), 1);
assert_eq!(member_info_v1.member_info[0].member_info.version, 2);
// Test applying delta with multiple members
println!("Applying delta with multiple members");
let new_member_signing_key = SigningKey::generate(&mut OsRng);
let new_member_verifying_key = new_member_signing_key.verifying_key();
let new_member_id = new_member_verifying_key.into();
let new_member_info = create_test_member_info(new_member_id);
let new_authorized_member_info =
AuthorizedMemberInfo::new_with_member_key(new_member_info, &new_member_signing_key);
parent_state.members.members.push(AuthorizedMember {
member: Member {
owner_member_id: owner_id,
invited_by: owner_id,
member_vk: new_member_verifying_key,
},
signature: owner_signing_key
.sign("NewTestUser".as_bytes())
.to_bytes()
.into(),
});
let multi_delta = vec![
updated_authorized_member_info.clone(),
new_authorized_member_info.clone(),
];
let result = member_info_v1.apply_delta(&parent_state, ¶meters, &Some(multi_delta));
println!("Result: {:?}", result);
assert!(
result.is_ok(),
"Failed to apply multi-member delta: {:?}",
result.err()
);
assert_eq!(member_info_v1.member_info.len(), 2);
assert!(member_info_v1
.member_info
.contains(&updated_authorized_member_info));
assert!(member_info_v1
.member_info
.contains(&new_authorized_member_info));
}
#[test]
fn test_authorized_member_info_new_and_verify() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let member_id = SigningKey::generate(&mut OsRng).verifying_key().into();
let member_info = create_test_member_info(member_id);
let authorized_member_info =
AuthorizedMemberInfo::new(member_info.clone(), &owner_signing_key);
let parameters = ChatRoomParametersV1 {
owner: owner_signing_key.verifying_key(),
};
assert!(authorized_member_info.verify_signature(¶meters).is_ok());
// Test with wrong key
let wrong_key = SigningKey::generate(&mut OsRng).verifying_key();
let wrong_parameters = ChatRoomParametersV1 { owner: wrong_key };
assert!(authorized_member_info
.verify_signature(&wrong_parameters)
.is_err());
}
#[test]
fn test_member_info_v1_delta_scenarios() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let owner_verifying_key = owner_signing_key.verifying_key();
let mut member_info_v1 = MemberInfoV1::default();
let parent_state = ChatRoomStateV1::default();
let parameters = ChatRoomParametersV1 {
owner: owner_verifying_key,
};
// Generate 5 member infos
let member_infos: Vec<AuthorizedMemberInfo> = (0..5)
.map(|_| {
let member_id = SigningKey::generate(&mut OsRng).verifying_key().into();
let member_info = create_test_member_info(member_id);
AuthorizedMemberInfo::new(member_info, &owner_signing_key)
})
.collect();
// Test when all members are new
member_info_v1.member_info = member_infos.clone();
let delta = member_info_v1.delta(&parent_state, ¶meters, &HashMap::new());
assert_eq!(delta.unwrap().len(), 5);
// Test when all members are old with same version
let old_summary: HashMap<MemberId, u32> = member_infos
.iter()
.map(|info| (info.member_info.member_id, info.member_info.version))
.collect();
let delta = member_info_v1.delta(&parent_state, ¶meters, &old_summary);
assert!(delta.is_none());
// Test with a mix of new and old members
let mut old_summary = HashMap::new();
old_summary.insert(member_infos[0].member_info.member_id, 1);
old_summary.insert(member_infos[1].member_info.member_id, 1);
let delta = member_info_v1.delta(&parent_state, ¶meters, &old_summary);
assert_eq!(delta.unwrap().len(), 3);
// Test with updated version
let mut updated_member_info = member_infos[0].clone();
updated_member_info.member_info.version = 2;
member_info_v1.member_info[0] = updated_member_info;
let delta = member_info_v1.delta(&parent_state, ¶meters, &old_summary);
assert_eq!(delta.unwrap().len(), 4); // 3 new members + 1 updated member
}
#[test]
fn test_member_info_version_handling() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let owner_verifying_key = owner_signing_key.verifying_key();
let owner_id = owner_verifying_key.into();
// Create a member
let member_signing_key = SigningKey::generate(&mut OsRng);
let member_verifying_key = member_signing_key.verifying_key();
let member_id = member_verifying_key.into();
// Create initial member info with version 1
let member_info_v1 = create_test_member_info(member_id);
let authorized_member_info_v1 =
AuthorizedMemberInfo::new_with_member_key(member_info_v1, &member_signing_key);
// Create updated member info with version 2
let mut member_info_v2 = create_test_member_info(member_id);
member_info_v2.version = 2;
member_info_v2.preferred_nickname = "UpdatedNickname".to_string();
let authorized_member_info_v2 =
AuthorizedMemberInfo::new_with_member_key(member_info_v2, &member_signing_key);
// Set up state with version 1
let mut member_info_state = MemberInfoV1::default();
member_info_state
.member_info
.push(authorized_member_info_v1.clone());
// Create parent state with the member
let mut parent_state = ChatRoomStateV1::default();
let member = Member {
owner_member_id: owner_id,
invited_by: owner_id,
member_vk: member_verifying_key,
};
let authorized_member = AuthorizedMember::new(member, &owner_signing_key);
parent_state.members.members.push(authorized_member);
let parameters = ChatRoomParametersV1 {
owner: owner_verifying_key,
};
// Create summary with version 1
let summary = member_info_state.summarize(&parent_state, ¶meters);
assert_eq!(*summary.get(&member_id).unwrap(), 1);
// Create delta with version 2
let mut updated_state = MemberInfoV1::default();
updated_state
.member_info
.push(authorized_member_info_v2.clone());
let delta = updated_state.delta(&parent_state, ¶meters, &summary);
assert!(delta.is_some());
assert_eq!(delta.as_ref().unwrap().len(), 1);
assert_eq!(delta.as_ref().unwrap()[0].member_info.version, 2);
// Apply delta and verify version is updated
member_info_state
.apply_delta(&parent_state, ¶meters, &delta)
.unwrap();
assert_eq!(member_info_state.member_info.len(), 1);
assert_eq!(member_info_state.member_info[0].member_info.version, 2);
assert_eq!(
member_info_state.member_info[0]
.member_info
.preferred_nickname,
"UpdatedNickname"
);
}
#[test]
fn test_room_owner_member_info() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let owner_verifying_key = owner_signing_key.verifying_key();
let owner_id = owner_verifying_key.into();
let owner_member_info = create_test_member_info(owner_id);
let authorized_owner_info =
AuthorizedMemberInfo::new(owner_member_info, &owner_signing_key);
let mut member_info_v1 = MemberInfoV1::default();
member_info_v1.member_info.push(authorized_owner_info);
let mut parent_state = ChatRoomStateV1::default();
parent_state.members.members.push(AuthorizedMember {
member: Member {
owner_member_id: owner_id,
invited_by: owner_id,
member_vk: owner_verifying_key,
},
signature: owner_signing_key
.sign("TestOwner".as_bytes())
.to_bytes()
.into(),
});
let parameters = ChatRoomParametersV1 {
owner: owner_verifying_key,
};
let result = member_info_v1.verify(&parent_state, ¶meters);
assert!(
result.is_ok(),
"Room owner should be allowed to have member info: {:?}",
result
);
}
#[test]
fn test_member_info_retention() {
let owner_signing_key = SigningKey::generate(&mut OsRng);
let owner_verifying_key = owner_signing_key.verifying_key();
let owner_id = owner_verifying_key.into();
// Create owner's member info
let owner_member_info = create_test_member_info(owner_id);
let authorized_owner_info =
AuthorizedMemberInfo::new(owner_member_info, &owner_signing_key);
// Create regular member's info
let member_signing_key = SigningKey::generate(&mut OsRng);
let member_verifying_key = member_signing_key.verifying_key();
let member_id = member_verifying_key.into();
let member_info = create_test_member_info(member_id);
let authorized_member_info =
AuthorizedMemberInfo::new_with_member_key(member_info, &member_signing_key);
// Set up MemberInfoV1 with both owner and member info
let mut member_info_v1 = MemberInfoV1::default();
member_info_v1
.member_info
.push(authorized_owner_info.clone());
member_info_v1
.member_info
.push(authorized_member_info.clone());
// Set up parent state with only the regular member
let mut parent_state = ChatRoomStateV1::default();
parent_state.members.members.push(AuthorizedMember {
member: Member {
owner_member_id: owner_id,
invited_by: owner_id,
member_vk: member_verifying_key,
},
signature: owner_signing_key
.sign("TestMember".as_bytes())
.to_bytes()
.into(),
});
let parameters = ChatRoomParametersV1 {
owner: owner_verifying_key,
};
// Apply an empty delta to trigger retention logic
let result = member_info_v1.apply_delta(&parent_state, ¶meters, &Some(vec![]));
assert!(result.is_ok(), "Failed to apply delta: {:?}", result.err());
// Verify that owner's info is retained even though not in members list
assert!(
member_info_v1
.member_info
.iter()
.any(|info| info.member_info.member_id == owner_id),
"Owner's member info should be retained"
);
// Remove the regular member from parent state
parent_state.members.members.clear();
// Apply another empty delta
let result = member_info_v1.apply_delta(&parent_state, ¶meters, &Some(vec![]));
assert!(
result.is_ok(),
"Failed to apply second delta: {:?}",
result.err()
);
// Verify that only owner's info remains
assert_eq!(
member_info_v1.member_info.len(),
1,
"Should only contain owner's info"
);
assert_eq!(
member_info_v1.member_info[0].member_info.member_id, owner_id,
"Remaining info should be owner's"
);
}
}