X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=blobdiff_plain;f=sources%2Fgethost.c;fp=sources%2Fgethost.c;h=3912dd4015cad2bc74b15332bf85d4f455c324cb;hp=0000000000000000000000000000000000000000;hb=e7c1eaebbc012ee182a8d82fc75968969549821d;hpb=07d6f8f2907315b4004b4f612110247ba1eabdbc

diff --git a/sources/gethost.c b/sources/gethost.c
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+/* gethost.c
+ * 
+ * Copyright (C) 2001 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
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/****************************************************************
+ *
+ * Program gethost.c: 
+ * Program to test gethostbyname and getaddrinfo
+ *
+ * Author: Simone Piccardi
+ * Aug. 2002
+ *
+ * Usage: gethost -h give all info's
+ *
+ * $Id: gethost.c,v 1.1 2002/08/27 16:05:04 piccardi Exp $
+ *
+ ****************************************************************/
+/* 
+ * Include needed headers
+ */
+#define _GNU_SOURCE
+#include <errno.h>       /* error definitions and routines */ 
+#include <stdlib.h>      /* C standard library */
+#include <unistd.h>      /* unix standard library */
+#include <stdio.h>	 /* standard I/O library */
+#include <string.h>      /* string functions */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netdb.h>
+
+/* Help printing routine */
+void usage(void);
+
+int main(int argc, char *argv[])
+{
+/* 
+ * Variables definition  
+ */
+    int i;
+    int use = 0;
+    struct hostent *host;
+    struct in_addr addr;
+    struct addrinfo hint;
+    struct addrinfo *address;
+    struct sockaddr_in *socket;
+    /*
+     * Input section: decode command line parameters 
+     * Use getopt function
+     */
+    opterr = 0;	 /* don't want writing to stderr */
+    while ( (i = getopt(argc, argv, "han")) != -1) {
+	switch (i) {
+	/* 
+	 * Handling options 
+	 */ 
+	case 'h':   /* help option */
+	    printf("Wrong -h option use\n");
+	    usage();
+	    return -1;
+	    break;
+	case 'a':   /* help option */
+	    use = 1;
+	    break;
+	case 'n':   /* help option */
+	    use = 0;
+	    break;
+	case '?':   /* unrecognized options */
+	    printf("Unrecognized options -%c\n",optopt);
+	    usage();
+	default:    /* should not reached */
+	    usage();
+	}
+    }
+    /* ***********************************************************
+     * 
+     *		 Options processing completed
+     *
+     *		      Main code beginning
+     * 
+     * ***********************************************************/
+    if ((argc-optind)!= 1)  {
+        printf("From %d arguments, removed %d options\n", argc, optind);
+        usage();
+    }
+    if (use == 0) {
+	host = gethostbyname(argv[optind]);
+	printf("gethostbyname %s\n", argv[optind]);
+	printf("Official host name %s\n", host->h_name);
+	printf("Address Type %d\n", host->h_addrtype);
+	printf("Address Lenght %d\n", host->h_length);
+	addr.s_addr = *( (unsigned long *)host->h_addr);
+	printf("Address  %s\n", inet_ntoa(addr));
+    } else {
+/* 	host = getipnodebyname(argv[optind], AF_INET, 0, &i); */
+/* 	if (!host) printf("Error\n"); */
+/* 	printf("getipnodebyname %s, error %d\n", argv[optind], i); */
+/* 	printf("Official host name %s\n", host->h_name); */
+/* 	printf("Address Type %d\n", host->h_addrtype); */
+/* 	printf("Address Lenght %d\n", host->h_length); */
+/* 	addr.s_addr = *( (unsigned long *)host->h_addr); */
+/* 	printf("Address  %s\n", inet_ntoa(addr)); */
+	hint.ai_flags = 0;
+	hint.ai_family = PF_INET;
+	hint.ai_socktype = 0;
+	hint.ai_protocol = 0;
+	hint.ai_addrlen = 0;
+	hint.ai_addr = NULL;
+	hint.ai_canonname = NULL;
+	hint.ai_next = NULL;
+	if (i = getaddrinfo(argv[optind], "telnet", &hint, &address)) {
+	    printf("getaddrinfo %s = %s \n", argv[optind], gai_strerror(i));
+	} else {
+	    printf("Address flag %d\n", address->ai_flags);
+	    printf("Address family %d\n", address->ai_family);
+	    printf("Address socket type %d\n", address->ai_socktype);
+	    printf("Address protocol %d\n", address->ai_protocol);
+	    printf("Address lenght %d\n", address->ai_addrlen);
+	    printf("Canonical name %s\n", address->ai_canonname);
+	    socket = (struct sockaddr_in *) address->ai_addr;
+	    printf("Address %s\n", inet_ntoa(socket->sin_addr));
+	    printf("Port %d\n", htons(socket->sin_port));
+	    printf("Family %d\n", socket->sin_family);
+	    
+	}
+    }
+    return 0;
+}
+/*
+ * routine to print usage info and exit
+ */
+void usage(void) {
+    printf("Program gehost: test host name functions  \n");
+    printf("Usage:\n");
+    printf("  gethost [-h] address \n");
+    printf("  -h	   print this help\n");
+    printf("  -a	   use getaddrinfo\n");
+    printf("  -n	   use gethostbyname\n");
+    
+    exit(1);
+}
+