diff options
Diffstat (limited to 'JMAP_COMPLIANCE.md')
| -rw-r--r-- | JMAP_COMPLIANCE.md | 460 |
1 files changed, 460 insertions, 0 deletions
diff --git a/JMAP_COMPLIANCE.md b/JMAP_COMPLIANCE.md new file mode 100644 index 0000000..84d9436 --- /dev/null +++ b/JMAP_COMPLIANCE.md @@ -0,0 +1,460 @@ +# JMAP Compliance Assessment + +**Date:** August 15, 2025 +**JMAP Specification:** RFC 8620 +**JCHAT Extension:** Custom capability `urn:ietf:params:jmap:chat` + +## Executive Summary + +Our JCHAT implementation has **good foundational JMAP compliance** with some areas needing attention for full RFC 8620 conformance. The core protocol structure is solid, but we're missing several required features and have some implementation gaps. + +## Compliance Status Overview + +### ✅ COMPLIANT Areas + +#### 1. Session Resource (RFC 8620 Section 2) +- **Endpoint:** `GET /jmap/session` ✅ +- **Response Structure:** Fully compliant ✅ +- **Required Properties:** All present ✅ + - `capabilities` - Properly structured + - `accounts` - Correctly formatted + - `primaryAccounts` - Present + - `username` - Included + - `apiUrl` - Valid endpoint + - `downloadUrl` - Template format correct + - `uploadUrl` - Template format correct + - `eventSourceUrl` - Present (though not fully implemented) + - `state` - Session state tracking + +#### 2. Core JMAP Request/Response Structure +- **Content-Type:** `application/json` ✅ +- **Request Object Structure:** Compliant ✅ + - `using` array for capabilities + - `methodCalls` array with [method, args, callId] format + - `createdIds` object support +- **Response Object Structure:** Compliant ✅ + - `methodResponses` array + - `createdIds` object + - `sessionState` included + +#### 3. Error Handling (RFC 8620 Section 3.6) +- **Error URNs:** Proper JMAP error namespace ✅ + - `urn:ietf:params:jmap:error:notJSON` + - `urn:ietf:params:jmap:error:notRequest` + - `urn:ietf:params:jmap:error:unknownCapability` +- **Error Response Format:** Compliant ✅ +- **HTTP Status Codes:** Appropriate usage ✅ + +#### 4. Method Implementation Pattern +- **Standard Methods:** Following JMAP conventions ✅ + - `/get`, `/set`, `/changes`, `/query` patterns + - Proper method naming: `ObjectType/method` +- **Core/echo:** Implemented ✅ + +#### 5. Capability Declaration +- **Core Capability:** `urn:ietf:params:jmap:core` ✅ +- **Extension Capability:** `urn:ietf:params:jmap:chat` ✅ +- **Capability Validation:** Proper checking ✅ + +#### 6. CORS Support +- **Headers:** Properly configured ✅ +- **Preflight:** OPTIONS handling ✅ +- **Origin:** Wildcard for development ✅ + +--- + +### ⚠️ PARTIALLY COMPLIANT Areas + +#### 1. Authentication & Authorization (RFC 8620 Section 3.9) +**Status:** Major Gap ❌ +``` +Current: No authentication - hardcoded AccountId = "default" +Required: Proper authentication mechanism +``` +**Issues:** +- No user authentication +- No session validation +- No authorization checks +- Hardcoded account ID + +**Fix Required:** +```erlang +% Need to implement proper auth +authenticate_request(Req) -> + case get_auth_header(Req) of + {ok, Token} -> validate_token(Token); + {error, missing} -> {error, unauthorized} + end. +``` + +#### 2. State Management (RFC 8620 Section 1.6) +**Status:** Basic Implementation ⚠️ +``` +Current: Simple state counter, not per-account +Required: Proper state tracking per account/object type +``` +**Issues:** +- Global state counter vs per-account +- State not properly updated on all changes +- No state validation in requests + +#### 3. Object Property Filtering +**Status:** Partially Implemented ⚠️ +``` +Current: Basic property support in /get methods +Missing: Full property filtering, null handling +``` + +#### 4. Pagination & Limits (RFC 8620 Section 5.5) +**Status:** Missing ❌ +``` +Current: No pagination in /query methods +Required: position, limit, anchor support +``` + +--- + +### ❌ NON-COMPLIANT Areas + +#### 1. Binary Data Support (RFC 8620 Section 6) +**Status:** Not Implemented ❌ +- Upload endpoint defined but not implemented +- Download endpoint defined but not implemented +- No blob storage mechanism +- No binary data handling in objects + +**Required Implementation:** +```erlang +% Upload endpoint +handle_upload(Req, AccountId) -> + {ok, Body, _} = cowboy_req:read_body(Req), + BlobId = generate_blob_id(), + store_blob(AccountId, BlobId, Body), + Response = #{ + <<"accountId">> => AccountId, + <<"blobId">> => BlobId, + <<"type">> => get_content_type(Req), + <<"size">> => byte_size(Body) + }, + reply_json(201, Response, Req). +``` + +#### 2. Server-Sent Events (RFC 8620 Section 7) +**Status:** Endpoint exists, not implemented ❌ +```erlang +% EventSource endpoint defined but returns empty +% Need proper SSE implementation for real-time updates +``` + +#### 3. Push Notifications +**Status:** Not Implemented ❌ +- No push subscription mechanism +- No WebPush support +- No push state validation + +#### 4. Concurrency Control +**Status:** Missing ❌ +- No ifInState validation +- No optimistic locking +- No conflict detection + +--- + +## Method-Level Compliance Analysis + +### Core Methods + +#### Core/echo ✅ +```json +Request: ["Core/echo", {"hello": "world"}, "c1"] +Response: ["Core/echo", {"hello": "world"}, "c1"] +``` +**Status:** Fully compliant + +### Conversation Methods + +#### Conversation/get ⚠️ +**Compliant:** +- Basic structure correct +- Property filtering works +- Error handling proper + +**Issues:** +- No `notFound` handling for missing IDs +- Properties parameter not fully validated +- No account validation + +#### Conversation/set ⚠️ +**Compliant:** +- Create/update structure +- Response format correct +- Error reporting + +**Issues:** +- No `ifInState` validation +- No proper conflict detection +- Limited validation of input data + +#### Conversation/query ⚠️ +**Compliant:** +- Basic query structure +- Filter support + +**Issues:** +- No pagination (position, limit, anchor) +- No sort/collation support +- Missing query validation + +#### Conversation/changes ⚠️ +**Compliant:** +- Basic structure + +**Issues:** +- State tracking incomplete +- No proper change detection +- No `hasMoreChanges` logic + +### Message Methods +Similar compliance status as Conversation methods - basic structure correct but missing advanced features. + +--- + +## Detailed Compliance Gaps + +### 1. RFC 8620 Section 3.3 - Request Object Validation + +**Missing Validations:** +```erlang +validate_request(Request) -> + % Need to validate: + % - using array contains supported capabilities + % - methodCalls is array of valid invocations + % - createdIds is object with string values + % - no unknown properties + ok. +``` + +### 2. RFC 8620 Section 3.4 - Response Object + +**Current Issues:** +``` +✅ methodResponses array format +✅ createdIds object +❌ sessionState not properly managed +❌ Missing response validation +``` + +### 3. RFC 8620 Section 5.1 - /get Method + +**Missing Features:** +```erlang +% Properties validation +validate_properties(Properties, ObjectType) -> ok | {error, Reason}. + +% NotFound handling +{ok, #{ + <<"accountId">> => AccountId, + <<"state">> => State, + <<"list">> => FoundObjects, + <<"notFound">> => MissingIds % ← Missing +}}. +``` + +### 4. RFC 8620 Section 5.3 - /set Method + +**Missing Features:** +```erlang +% IfInState validation +validate_if_in_state(Args, CurrentState) -> ok | {error, stateMismatch}. + +% Proper conflict detection +detect_conflicts(OldState, NewState) -> [ConflictId]. + +% Destroy dependencies +check_destroy_dependencies(Id) -> ok | {error, Reason}. +``` + +### 5. RFC 8620 Section 5.5 - /query Method + +**Missing Features:** +```erlang +% Pagination support +handle_pagination(#{ + <<"position">> => Position, + <<"limit">> => Limit, + <<"anchor">> => Anchor +}) -> {Start, End}. + +% Sorting support +apply_sort(Results, Sort) -> SortedResults. +``` + +--- + +## Priority Fixes for Full Compliance + +### Phase 1: Critical (Required for basic compliance) + +1. **Authentication Implementation** + ```erlang + % Add proper auth to jchat_http.erl + authenticate_request(Req) -> + case cowboy_req:header(<<"authorization">>, Req) of + undefined -> {error, unauthorized}; + <<"Bearer ", Token/binary>> -> validate_jwt(Token); + _ -> {error, malformed_auth} + end. + ``` + +2. **State Management Fix** + ```erlang + % Per-account state tracking in jchat_db.erl + get_account_state(AccountId, ObjectType) -> State. + update_account_state(AccountId, ObjectType) -> NewState. + ``` + +3. **Binary Data Implementation** + - Implement upload/download endpoints + - Add blob storage to Mnesia + - Support attachments in messages + +### Phase 2: Standard Methods (For method compliance) + +1. **Enhance /get methods** + ```erlang + % Add notFound handling + handle_object_get(Args, AccountId) -> + {Found, NotFound} = find_objects(Ids), + #{<<"list">> => Found, <<"notFound">> => NotFound}. + ``` + +2. **Fix /set methods** + ```erlang + % Add ifInState validation + validate_if_in_state(Args, CurrentState) -> + case maps:get(<<"ifInState">>, Args, CurrentState) of + CurrentState -> ok; + _ -> {error, stateMismatch} + end. + ``` + +3. **Implement /query pagination** + ```erlang + % Add pagination to queries + apply_pagination(Results, Position, Limit, Anchor) -> + {PaginatedResults, QueryState}. + ``` + +### Phase 3: Advanced Features (For full compliance) + +1. **Server-Sent Events** +2. **Push Notifications** +3. **Advanced Query Features** +4. **Concurrency Control** + +--- + +## Testing JMAP Compliance + +### Manual Testing Commands + +```bash +# Test session endpoint +curl -X GET http://localhost:8080/jmap/session + +# Test basic request +curl -X POST http://localhost:8080/jmap/api \ + -H "Content-Type: application/json" \ + -d '{ + "using": ["urn:ietf:params:jmap:core", "urn:ietf:params:jmap:chat"], + "methodCalls": [["Core/echo", {"test": "data"}, "c1"]] + }' + +# Test conversation query +curl -X POST http://localhost:8080/jmap/api \ + -H "Content-Type: application/json" \ + -d '{ + "using": ["urn:ietf:params:jmap:chat"], + "methodCalls": [["Conversation/query", {"accountId": "default"}, "c1"]] + }' +``` + +### Automated Compliance Testing + +```erlang +%% Add to jchat_SUITE.erl +test_jmap_session_compliance() -> + {ok, {{_, 200, _}, Headers, Body}} = + httpc:request(get, {"http://localhost:8080/jmap/session", []}, [], []), + + %% Validate Content-Type + ?assertMatch({"content-type", "application/json" ++ _}, + lists:keyfind("content-type", 1, Headers)), + + %% Validate required session properties + Session = jsx:decode(list_to_binary(Body), [return_maps]), + ?assertMatch(#{<<"capabilities">> := _}, Session), + ?assertMatch(#{<<"accounts">> := _}, Session), + ?assertMatch(#{<<"primaryAccounts">> := _}, Session), + ?assertMatch(#{<<"apiUrl">> := _}, Session). + +test_jmap_request_response_compliance() -> + Request = #{ + <<"using">> => [<<"urn:ietf:params:jmap:core">>], + <<"methodCalls">> => [[<<"Core/echo">>, #{<<"test">> => <<"data">>}, <<"c1">>]] + }, + + {ok, Response} = make_jmap_request(Request), + + %% Validate response structure + ?assertMatch(#{<<"methodResponses">> := _}, Response), + ?assertMatch(#{<<"sessionState">> := _}, Response). +``` + +--- + +## Recommendations + +### Immediate Actions (Week 1) +1. ✅ Document current compliance status (this document) +2. 🔧 Fix authentication mechanism +3. 🔧 Implement proper state management +4. 🔧 Add binary data support + +### Short Term (Weeks 2-4) +1. 🔧 Enhance all standard methods (/get, /set, /query, /changes) +2. 🔧 Add comprehensive input validation +3. 🔧 Implement proper error handling +4. 🔧 Add pagination support + +### Long Term (Weeks 5-8) +1. 🔧 Server-Sent Events implementation +2. 🔧 Push notification support +3. 🔧 Advanced query features +4. 🔧 Full concurrency control + +### Compliance Testing +1. 🧪 Create comprehensive test suite +2. 🧪 Automated compliance checking +3. 🧪 Performance benchmarking +4. 🧪 Interoperability testing + +--- + +## Conclusion + +Our JCHAT implementation demonstrates **solid understanding of JMAP principles** and has a **good foundation** for a compliant server. The session handling, basic request/response structure, and method patterns are all correct. + +**Key Strengths:** +- Proper JMAP request/response structure +- Correct error handling patterns +- Good capability system +- Clean method organization + +**Critical Gaps:** +- No authentication/authorization +- Incomplete state management +- Missing binary data support +- Limited method feature completeness + +With focused development effort on the priority fixes, we can achieve **full JMAP compliance within 4-6 weeks** while maintaining our clean architectural foundation. |