[feature] Federate interaction policies + Accepts; enforce policies (#3138)

* [feature] Federate interaction policies + Accepts; enforce policies

* use Acceptable type

* fix index

* remove appendIRIStrs

* add GetAccept federatingdb function

* lock on object IRI

1 files changed, 137 insertions, 0 deletions

diff --git a/internal/ap/extractpolicy_test.go b/internal/ap/extractpolicy_test.go
new file mode 100644
index 000000000..3d5e75c41
--- /dev/null
+++ b/internal/ap/extractpolicy_test.go
@@ -0,0 +1,137 @@
+// GoToSocial
+// Copyright (C) GoToSocial Authors admin@gotosocial.org
+// SPDX-License-Identifier: AGPL-3.0-or-later
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package ap_test
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"testing"
+
+	"github.com/stretchr/testify/suite"
+	"github.com/superseriousbusiness/gotosocial/internal/ap"
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+)
+
+type ExtractPolicyTestSuite struct {
+	APTestSuite
+}
+
+func (suite *ExtractPolicyTestSuite) TestExtractPolicy() {
+	rawNote := `{
+  "@context": [
+    "https://gotosocial.org/ns",
+    "https://www.w3.org/ns/activitystreams"
+  ],
+  "content": "hey @f0x and @dumpsterqueer",
+  "contentMap": {
+    "en": "hey @f0x and @dumpsterqueer",
+    "fr": "bonjour @f0x et @dumpsterqueer"
+  },
+  "interactionPolicy": {
+    "canLike": {
+      "always": [
+        "https://www.w3.org/ns/activitystreams#Public"
+      ],
+      "approvalRequired": []
+    },
+    "canReply": {
+      "always": [
+        "http://localhost:8080/users/the_mighty_zork",
+        "http://localhost:8080/users/the_mighty_zork/followers",
+        "https://gts.superseriousbusiness.org/users/dumpsterqueer",
+        "https://gts.superseriousbusiness.org/users/f0x"
+      ],
+      "approvalRequired": [
+        "https://www.w3.org/ns/activitystreams#Public"
+      ]
+    },
+    "canAnnounce": {
+      "always": [
+        "http://localhost:8080/users/the_mighty_zork"
+      ],
+      "approvalRequired": [
+        "https://www.w3.org/ns/activitystreams#Public"
+      ]
+    }
+  },
+  "tag": [
+    {
+      "href": "https://gts.superseriousbusiness.org/users/dumpsterqueer",
+      "name": "@dumpsterqueer@superseriousbusiness.org",
+      "type": "Mention"
+    },
+    {
+      "href": "https://gts.superseriousbusiness.org/users/f0x",
+      "name": "@f0x@superseriousbusiness.org",
+      "type": "Mention"
+    }
+  ],
+  "type": "Note"
+}`
+
+	statusable, err := ap.ResolveStatusable(
+		context.Background(),
+		io.NopCloser(
+			bytes.NewBufferString(rawNote),
+		),
+	)
+	if err != nil {
+		suite.FailNow(err.Error())
+	}
+
+	policy := ap.ExtractInteractionPolicy(
+		statusable,
+		// Zork didn't actually create
+		// this status but nevermind.
+		suite.testAccounts["local_account_1"],
+	)
+
+	expectedPolicy := &gtsmodel.InteractionPolicy{
+		CanLike: gtsmodel.PolicyRules{
+			Always: gtsmodel.PolicyValues{
+				gtsmodel.PolicyValuePublic,
+			},
+			WithApproval: gtsmodel.PolicyValues{},
+		},
+		CanReply: gtsmodel.PolicyRules{
+			Always: gtsmodel.PolicyValues{
+				gtsmodel.PolicyValueAuthor,
+				gtsmodel.PolicyValueFollowers,
+				"https://gts.superseriousbusiness.org/users/dumpsterqueer",
+				"https://gts.superseriousbusiness.org/users/f0x",
+			},
+			WithApproval: gtsmodel.PolicyValues{
+				gtsmodel.PolicyValuePublic,
+			},
+		},
+		CanAnnounce: gtsmodel.PolicyRules{
+			Always: gtsmodel.PolicyValues{
+				gtsmodel.PolicyValueAuthor,
+			},
+			WithApproval: gtsmodel.PolicyValues{
+				gtsmodel.PolicyValuePublic,
+			},
+		},
+	}
+	suite.EqualValues(expectedPolicy, policy)
+}
+
+func TestExtractPolicyTestSuite(t *testing.T) {
+	suite.Run(t, &ExtractPolicyTestSuite{})
+}