Add models

Author: sylwia-budzynska

python/ql/lib/semmle/python/frameworks/Streamlit.qll

@@ -0,0 +1,37 @@
+/**
+ * Provides classes modeling security-relevant aspects of the `streamlit` PyPI package.
+ * See https://pypi.org/project/streamlit/.
+ */
+
+ import python
+ import semmle.python.dataflow.new.RemoteFlowSources
+ import semmle.python.dataflow.new.TaintTracking
+ import semmle.python.ApiGraphs
+ import semmle.python.Concepts
+
+
+ /**
+ * Provides models for the `gradio` PyPI package.
+ * See https://pypi.org/project/gradio/.
+ */
+module Streamlit {
+	/**
+	 * The calls to the interactive streamlit widgets, which take untrusted input.
+	 */
+	private class StreamlitInput extends RemoteFlowSource::Range {
+		StreamlitInput() { this = API::moduleImport("streamlit").getMember(["text_input", "text_area", "chat_input"]).getACall() }
+		override string getSourceType() { result = "Streamlit user input" }
+	}
+
+	/**
+	 * The `query` call that can execute raw queries on a connection to a SQL/Sonwflake/Snowpark database.
+	 * https://docs.streamlit.io/develop/api-reference/connections/st.connection
+	 */
+	private class QueryMethodCall extends DataFlow::CallCfgNode, SqlExecution::Range {
+		QueryMethodCall() {
+		  this = API::moduleImport("streamlit").getMember("connection").getReturn().getMember("query").getACall()
+		}
+		override DataFlow::Node getSql() { result in [this.getArg(0), this.getArgByName("sql")] }
+	}
+
+}