openenvutils/telnetserver/src/mini_inetd.c
changeset 0 2e3d3ce01487
child 1 0fdb7f6b0309
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/openenvutils/telnetserver/src/mini_inetd.c	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,191 @@
+// mini_inetd.c
+//
+// © Portions Copyright (c) Symbian Software Ltd 2007. All rights reserved.
+//
+/*
+ * Copyright (c) 1995 - 2001 Kungliga Tekniska Hgskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+__RCSID("$Heimdal: mini_inetd.c,v 1.30 2002/02/18 19:08:55 joda Exp $"
+        "$NetBSD: mini_inetd.c,v 1.2 2002/09/20 21:48:58 mycroft Exp $");
+#endif
+
+#include <err.h>
+#include <netdb.h>
+#include <sys/select.h>
+#include <sys/socket.h>
+#include <sys/param.h>
+
+#ifdef __SYMBIAN32__
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#endif
+
+#ifndef __SYMBIAN32__
+#include "roken.h"
+#endif
+
+/*
+ * accept a connection on `s' and pretend it's served by inetd.
+ */
+
+static void
+accept_it (int s)
+{
+    int s2;
+	socklen_t length;
+	struct sockaddr sAddr;  	
+    s2 = accept(s, &sAddr, &length);    
+    
+    close(s);
+#ifdef __SYMBIAN32__    
+   	if( s2 > 0 )    
+		{  
+#endif//__SYMBIAN32__
+	    dup2(s2, STDIN_FILENO);
+	    dup2(s2, STDOUT_FILENO);
+	    dup2(s2, STDERR_FILENO); 
+		
+	    close(s2);
+#ifdef __SYMBIAN32__    	    
+		}
+#endif//__SYMBIAN32__		
+}
+
+/*
+ * Listen on a specified port, emulating inetd.
+ */
+
+void
+mini_inetd_addrinfo (struct addrinfo *ai)
+{
+    struct addrinfo *a;
+    int n, nalloc, i, ret;
+    int *fds;
+    int on=1;
+#ifdef HAVE_POLL
+    struct pollfd *set;
+#else
+    fd_set orig_read_set, read_set;
+    int max_fd = -1;
+#endif
+  	
+    for (nalloc = 0, a = ai; a != NULL; a = a->ai_next)
+	++nalloc;
+	
+    fds = (int*)malloc (nalloc * sizeof(*fds));
+  
+#ifdef HAVE_POLL
+    set = malloc (nalloc * sizeof(*set));
+#else
+    FD_ZERO(&orig_read_set);
+#endif
+	for (i = 0, a = ai; a != NULL; a = a->ai_next) {
+	fds[i] = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
+	if (fds[i] < 0) {
+		continue;
+	}
+
+	(void) setsockopt(fds[i], SOL_SOCKET, SO_REUSEADDR,
+				(char *)&on, sizeof(on));
+
+	if (bind (fds[i], a->ai_addr, a->ai_addrlen) < 0) {
+		close(fds[i]);
+	    continue;
+	}
+	if (listen (fds[i], SOMAXCONN) < 0) {
+		close(fds[i]);
+	    continue;
+	}
+#ifdef HAVE_POLL
+	set[i].fd = fds[i];
+	set[i].events = POLLIN;
+#else
+	FD_SET(fds[i], &orig_read_set);
+	max_fd = MAX(max_fd, fds[i]);
+#endif
+	++i;
+    }
+    n = i;
+
+    do {   
+#ifdef HAVE_POLL
+	ret = poll (set, nalloc, INFTIM);
+#else
+	read_set = orig_read_set;
+
+	ret = select (max_fd + 1, &read_set, NULL, NULL, NULL);
+#endif
+    } while (ret <= 0);
+
+    for (i = 0; i < n; ++i)
+#ifdef HAVE_POLL
+	if (set[i].revents & POLLIN)
+#else
+	if (FD_ISSET (fds[i], &read_set))
+#endif
+	{	
+	    accept_it (fds[0]);
+	    free (fds);
+#ifdef HAVE_POLL
+	    free (set);
+#endif
+	    return;
+	}
+    abort ();
+}
+
+void
+mini_inetd (int port)
+{
+	int err;
+    struct addrinfo *ai, hints;
+    char portstr[NI_MAXSERV];
+
+    memset (&hints, 0, sizeof(hints));
+    hints.ai_flags    = AI_PASSIVE;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_family   = PF_INET;
+
+    snprintf (portstr, sizeof(portstr), "%d", ntohs(port));
+    err=getaddrinfo (NULL, portstr, &hints, &ai);
+    
+    mini_inetd_addrinfo(ai);
+    
+    freeaddrinfo(ai);	
+}