/* TCP_echod.c
*
- * Copyright (C) 2001-2003 Simone Piccardi
+ * Copyright (C) 2001-2004 Simone Piccardi
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
*
* Usage: echod -h give all info
*
- * $Id: TCP_echod.c,v 1.11 2003/08/02 19:54:11 piccardi Exp $
+ * $Id$
*
****************************************************************/
/*
#include <signal.h> /* signal functions */
#include <errno.h> /* error code */
#include <string.h> /* error strings */
+#include <stdlib.h>
+
#include "Gapil.h"
#define BACKLOG 10
int waiting = 0;
int compat = 0;
pid_t pid;
- struct sockaddr_in serv_add, cli_add;
+ struct sockaddr_in cli_add;
socklen_t len;
char debug[MAXLINE], ipaddr[20];
/*
} else {
SignalRestart(SIGCHLD, HandSigCHLD); /* restarting handler */
}
- /* create socket */
- if ( (list_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
- perror("Socket creation error");
- exit(1);
- }
- /* initialize address */
- memset((void *)&serv_add, 0, sizeof(serv_add)); /* clear server address */
- serv_add.sin_family = AF_INET; /* address type is INET */
- serv_add.sin_port = htons(7); /* echo port is 7 */
- serv_add.sin_addr.s_addr = htonl(INADDR_ANY); /* connect from anywhere */
- /* bind socket */
- if (bind(list_fd, (struct sockaddr *)&serv_add, sizeof(serv_add)) < 0) {
- perror("bind error");
- exit(1);
- }
+ /* create and bind socket */
+ if ( (list_fd = sockbind(argv[optind], "echo", 6, SOCK_STREAM)) < 0) {
+ return 1;
+ }
/* release privileges and go daemon */
if (setgid(65534) !=0) { /* first give away group privileges */
perror("cannot give away group privileges");
/* handle echo to client */
while (1) {
/* accept connection */
+ len = sizeof(cli_add);
while (((conn_fd = accept(list_fd, (struct sockaddr *)&cli_add, &len))
< 0) && (errno == EINTR));
- if ( conn_fd < 0) {
+ if (conn_fd < 0) {
PrintErr("accept error");
exit(1);
}
if (pid == 0) { /* child */
close(list_fd); /* close listening socket */
ServEcho(conn_fd); /* handle echo */
+ if (debugging) {
+ snprintf(debug, MAXLINE, "Closed connection %s\n", ipaddr);
+ if (demonize) {
+ syslog(LOG_DEBUG, debug);
+ } else {
+ printf("%s", debug);
+ }
+ }
exit(0);
} else { /* parent */
close(conn_fd); /* close connected socket */
/* main loop, reading 0 char means client close connection */
while ( (nread = read(sockfd, buffer, MAXLINE)) != 0) {
if (nread < 0) {
- snprintf(debug, MAXLINE+20, "Errore in lettura: %s \n",
- strerror(errno));
- if (demonize) { /* daemon mode */
- syslog(LOG_DEBUG, debug);
- } else {
- printf("%s", debug);
- }
+ PrintErr("Errore in lettura");
+ return;
}
nwrite = FullWrite(sockfd, buffer, nread);
if (nwrite) {
- snprintf(debug, MAXLINE+20, "Errore in scrittura: %s \n",
- strerror(errno));
- if (demonize) { /* daemon mode */
- syslog(LOG_DEBUG, debug);
- } else {
- printf("%s", debug);
- }
+ PrintErr("Errore in scrittura");
+ return;
}
if (debugging) {
buffer[nread] = 0;