Several changes (#18)

Show help if no argument is provided

In case someone calls `xmppc` assume that he doesn't know how to use it.
Which means he might even not be aware of `-h`.
So let's print the help in case no argument is provided instead of
connecting, then discoverin that no mode is selected and disconnecting
again.

Fix segfault when not roster subcommand is provided

_roster_parse_command() segfaults since it assumes there is an argv[0].
Let's test the number of arguments.

Since we are already connected xmpp_connect_client() will wait for a
disconnect. So I introduce a teardown function that is called in both
the error case and the succesful case.

Now _roster_send_query() doesn't disconnect anymore.

Set to development by default

Only set to release when a new release is tagged.
Like this not every developer needs to change the code.
And it's git aka development anyways.

Don't mix german and english

Co-authored-by: Michael Vetter <jubalh@iodoru.org>
Reviewed-on: https://codeberg.org/Anoxinon_e.V./xmppc/pulls/18

configure.ac

@@ -19,8 +19,8 @@ AS_CASE([$host_os],
     [cygwin], [PLATFORM="cygwin"],
     [PLATFORM="nix"])
 
-#PACKAGE_STATUS="development"
+PACKAGE_STATUS="development"
-PACKAGE_STATUS="release"
+#PACKAGE_STATUS="release"
 
 AM_CFLAGS="-Wall -Wno-deprecated-declarations -pedantic -std=c11"
 AS_IF([test "x$PACKAGE_STATUS" = xdevelopment],

src/main.c

@@ -358,6 +358,13 @@ int main(int argc, char *argv[]) {
       {"mode", required_argument, 0, 'm'},
       {"file", required_argument, 0, 'f'},
       {0, 0, 0, 0}};
+
+  // No arguments provided
+  if (argc == 1) {
+        _show_help();
+        return EXIT_SUCCESS;
+  }
+
   while (c > -1) {
     int option_index = 0;
 
@@ -484,7 +491,7 @@ int main(int argc, char *argv[]) {
         }
 
   if( handler == NULL ) {
-    logError(&xmppc, "Unbekannter mode\n");
+    logError(&xmppc, "Unknown mode\n");
     return -1;
   } 
 

src/mode/roster.c

@@ -59,13 +59,22 @@ static void _roster_send_query(xmppc_t *xmppc,command_t *command);
 static int _handle_reply(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza,
                   void *const userdata);
 
+static void _teardown(xmppc_t *xmppc);
+
 void roster_execute_command(xmppc_t *xmppc, int argc, char *argv[]) {
   command_t *command = malloc(sizeof(command_t)); 
   command->type = UNKOWN;
+
+  if (argc == 0) {
+    logError(xmppc, "No subcommand provided\n");
+  } else {
     _roster_parse_command(command, argc, argv);
     _roster_send_query(xmppc, command);
   }
 
+  _teardown(xmppc);
+}
+
 static void _roster_parse_command(command_t *command, int argc, char *argv[]) {
   if (strcmp(COMMAND_LIST, argv[0]) == 0) {
     command->type = LIST;
@@ -115,7 +124,11 @@ int _handle_reply(xmpp_conn_t *const conn, xmpp_stanza_t *const stanza,
       }
     }
   }
-  xmpp_disconnect(conn);
-  xmpp_stop(xmpp_conn_get_context(conn));
   return 0;
 }
+
+static void _teardown(xmppc_t *xmppc) {
+  xmpp_conn_t *conn = xmppc->conn;
+  xmpp_disconnect(conn);
+  xmpp_stop(xmpp_conn_get_context(conn));
+}