1 /* 2 * Copyright (c) 1997 - 2000 Kungliga Tekniska H�gskolan 3 * (Royal Institute of Technology, Stockholm, Sweden). 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * 3. Neither the name of the Institute nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include "test_locl.h" 35 36 RCSID("$Id: common.c,v 1.11 2000/08/27 04:29:34 assar Exp $"); 37 38 static int help_flag; 39 static int version_flag; 40 static char *port_str; 41 static char *keytab_str; 42 krb5_keytab keytab; 43 char *service = SERVICE; 44 int fork_flag; 45 46 static struct getargs args[] = { 47 { "port", 'p', arg_string, &port_str, "port to listen to", "port" }, 48 { "service", 's', arg_string, &service, "service to use", "service" }, 49 { "keytab", 'k', arg_string, &keytab_str, "keytab to use", "keytab" }, 50 { "fork", 'f', arg_flag, &fork_flag, "do fork" }, 51 { "help", 'h', arg_flag, &help_flag }, 52 { "version", 0, arg_flag, &version_flag } 53 }; 54 55 static int num_args = sizeof(args) / sizeof(args[0]); 56 57 static void 58 server_usage(int code, struct getargs *args, int num_args) 59 { 60 arg_printusage(args, num_args, NULL, ""); 61 exit(code); 62 } 63 64 static void 65 client_usage(int code, struct getargs *args, int num_args) 66 { 67 arg_printusage(args, num_args, NULL, "host"); 68 exit(code); 69 } 70 71 72 static int 73 common_setup(krb5_context *context, int *argc, char **argv, 74 void (*usage)(int, struct getargs*, int)) 75 { 76 int port = 0; 77 *argc = krb5_program_setup(context, *argc, argv, args, num_args, usage); 78 79 if(help_flag) 80 (*usage)(0, args, num_args); 81 if(version_flag) { 82 print_version(NULL); 83 exit(0); 84 } 85 86 if(port_str){ 87 struct servent *s = roken_getservbyname(port_str, "tcp"); 88 if(s) 89 port = s->s_port; 90 else { 91 char *ptr; 92 93 port = strtol (port_str, &ptr, 10); 94 if (port == 0 && ptr == port_str) 95 errx (1, "Bad port `%s'", port_str); 96 port = htons(port); 97 } 98 } 99 100 if (port == 0) 101 port = krb5_getportbyname (*context, PORT, "tcp", 4711); 102 103 return port; 104 } 105 106 int 107 server_setup(krb5_context *context, int argc, char **argv) 108 { 109 int port = common_setup(context, &argc, argv, server_usage); 110 krb5_error_code ret; 111 112 if(argv[argc] != NULL) 113 server_usage(1, args, num_args); 114 if (keytab_str != NULL) 115 ret = krb5_kt_resolve (*context, keytab_str, &keytab); 116 else 117 ret = krb5_kt_default (*context, &keytab); 118 if (ret) 119 krb5_err (*context, 1, ret, "krb5_kt_resolve/default"); 120 return port; 121 } 122 123 int 124 client_setup(krb5_context *context, int *argc, char **argv) 125 { 126 int optind = *argc; 127 int port = common_setup(context, &optind, argv, client_usage); 128 if(*argc - optind != 1) 129 client_usage(1, args, num_args); 130 *argc = optind; 131 return port; 132 } 133 134 int 135 client_doit (const char *hostname, int port, const char *service, 136 int (*func)(int, const char *hostname, const char *service)) 137 { 138 struct addrinfo *ai, *a; 139 struct addrinfo hints; 140 int error; 141 char portstr[NI_MAXSERV]; 142 143 memset (&hints, 0, sizeof(hints)); 144 hints.ai_socktype = SOCK_STREAM; 145 hints.ai_protocol = IPPROTO_TCP; 146 147 snprintf (portstr, sizeof(portstr), "%u", ntohs(port)); 148 149 error = getaddrinfo (hostname, portstr, &hints, &ai); 150 if (error) { 151 errx (1, "%s: %s", hostname, gai_strerror(error)); 152 return -1; 153 } 154 155 for (a = ai; a != NULL; a = a->ai_next) { 156 int s; 157 158 s = socket (a->ai_family, a->ai_socktype, a->ai_protocol); 159 if (s < 0) 160 continue; 161 if (connect (s, a->ai_addr, a->ai_addrlen) < 0) { 162 warn ("connect(%s)", hostname); 163 close (s); 164 continue; 165 } 166 freeaddrinfo (ai); 167 return (*func) (s, hostname, service); 168 } 169 warnx ("failed to contact %s", hostname); 170 freeaddrinfo (ai); 171 return 1; 172 } 173