From: Urban Wallasch <urban.wallasch@freenet.de>
Date: Wed, 31 Jul 2019 19:56:57 +0000 (+0200)
Subject: * Added use message to telehttpd.
X-Git-Tag: v0.1.0~46
X-Git-Url: https://git.packet-gain.de/?a=commitdiff_plain;h=84edc0379a7e92da268eefcaa46cf219367e652a;p=ets2_tele.git

* Added use message to telehttpd.
---

diff --git a/telehttpd.c b/telehttpd.c
index ff684b3..ede748d 100644
--- a/telehttpd.c
+++ b/telehttpd.c
@@ -203,6 +203,22 @@ static int serve_http(void) {
     return 0;
 }
 
+static void usage( const char *me )
+{
+    const char *p;
+    if ( NULL != ( p = strrchr( me, '/' ) ) )
+        me = ++p;
+    fprintf( stderr, "Usage: %s [options]\n", me );
+    fprintf( stderr,
+        " Options:\n"
+        "  -b str   bind interface; default: * (all)\n"
+        "  -h str   host name; default: localhost\n"
+        "  -i file  file to serve as index file; default: index.html\n"
+        "  -o str   origin; default: http://localhost\n"
+        "  -p N     TCP listen port; default: 8837\n"
+    );
+}
+
 static int config( int argc, char *argv[] ) {
     int opt;
     const char *ostr = "+b:h:i:o:p:";
@@ -226,11 +242,13 @@ static int config( int argc, char *argv[] ) {
             break;
         case ':':
             EPRINT( "Missing argument for option '%c'\n", optopt );
+            usage( argv[0] );
             return -1;
             break;
         case '?':
         default:
             EPRINT( "Unrecognized option '%c'\n", optopt );
+            usage( argv[0] );
             return -1;
             break;
         }