Support Connection.Location.uri sink

Author: asgerf

unified/ql/lib/ext/legacy-swift.model.yml

@@ -235,6 +235,7 @@ extensions:
       - ["", "Connection", true, "scalar(_:_:)", "", "", "Argument[0]", "database-store", "manual"]
       - ["", "Connection", true, "scalar(_:_:)", "", "", "Argument[1]", "database-store", "manual"]
       - ["", "Connection", true, "init(_:readonly:)", "", "", "Argument[0]", "path-injection", "manual"]
+      - ["", "Connection.Location", true, "uri(_:parameters:)", "", "", "Argument[0]", "path-injection", "manual"]
       - ["", "Database", true, "changePassphrase(_:)", "", "", "Argument[0]", "encryption-key", "manual"]
       - ["", "Database", true, "usePassphrase(_:)", "", "", "Argument[0]", "encryption-key", "manual"]
       - ["", "Database", true, "allStatements(arguments:sql:)", "", "", "Argument[arguments:]", "database-store", "manual"]

unified/ql/test/library-tests/mad/test.expected

@@ -15,6 +15,7 @@ isSink
 | test.swift:100:24:100:36 | encryptionKey | encryption-key |
 | test.swift:101:18:101:24 | fileURL | path-injection |
 | test.swift:107:23:107:34 | seedFilePath | path-injection |
+| test.swift:119:29:119:34 | string | path-injection |
 isSource
 | test.swift:4:5:4:27 | String(...) | remote |
 | test.swift:5:5:5:44 | String(...) | remote |

unified/ql/test/library-tests/mad/test.swift

@@ -108,3 +108,13 @@ func testQualifiedConstructors(
         shouldCompactOnLaunch: nil,
         syncConfiguration: nil)
 }
+
+class Connection {
+    enum Location {
+        static func uri(_ path: String, parameters: String) {}
+    }
+}
+
+func testConnectionLocation(string: String) {
+    Connection.Location.uri(string, parameters: "")  // $ isSink=path-injection
+}