Fix loading from not standalone zip.

src/http.c

@@ -381,11 +381,19 @@ static void _http_add_body_bytes(tf_http_connection_t* connection, const void* d
 			};
 			connection->request = request;
 
-			tf_http_request_ref(request);
-			tf_trace_begin(connection->http->trace, connection->trace_name ? connection->trace_name : "http");
-			connection->callback(request);
-			tf_trace_end(connection->http->trace);
-			tf_http_request_unref(request);
+			if (!connection->http->is_shutting_down)
+			{
+				tf_http_request_ref(request);
+				tf_trace_begin(connection->http->trace, connection->trace_name ? connection->trace_name : "http");
+				connection->callback(request);
+				tf_trace_end(connection->http->trace);
+				tf_http_request_unref(request);
+			}
+			else
+			{
+				const char* k_payload = tf_http_status_text(503);
+				tf_http_respond(request, 503, NULL, 0, k_payload, strlen(k_payload));
+			}
 		}
 	}
 }
@@ -784,6 +792,8 @@ const char* tf_http_status_text(int status)
 		return "File not found";
 	case 500:
 		return "Internal server error";
+	case 503:
+		return "Service Unavailable";
 	default:
 		return "Unknown";
 	}

src/main.c

@@ -11,6 +11,7 @@
 
 #include "backtrace.h"
 #include "sqlite3.h"
+#include "unzip.h"
 
 #include <getopt.h>
 #include <stdlib.h>
@@ -412,11 +413,18 @@ static int _tf_command_run(const char* file, int argc, char* argv[])
 		.http_port = 12345,
 		.https_port = 12346,
 		.ssb_port = 8008,
-		.zip = file,
 		.db_path = k_db_path_default,
 	};
 	bool show_usage = false;
 
+	/* Check if the executable has data attached. */
+	unzFile zip = unzOpen(file);
+	if (zip)
+	{
+		args.zip = file;
+		unzClose(zip);
+	}
+
 	while (!show_usage)
 	{
 		static const struct option k_options[] = {