281 lines
6.2 KiB
C
281 lines
6.2 KiB
C
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/*
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* Copyright (c) 1995 - 2000 Kungliga Tekniska H<EFBFBD>gskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* Tiny program to help debug popper */
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#include "popper.h"
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RCSID("$Id: pop_debug.c,v 1.21 2001/02/20 01:44:47 assar Exp $");
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static void
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loop(int s)
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{
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char cmd[1024];
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char buf[1024];
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fd_set fds;
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while(1){
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FD_ZERO(&fds);
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FD_SET(0, &fds);
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FD_SET(s, &fds);
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if(select(s+1, &fds, 0, 0, 0) < 0)
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err(1, "select");
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if(FD_ISSET(0, &fds)){
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fgets(cmd, sizeof(cmd), stdin);
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cmd[strlen(cmd) - 1] = '\0';
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strlcat (cmd, "\r\n", sizeof(cmd));
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write(s, cmd, strlen(cmd));
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}
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if(FD_ISSET(s, &fds)){
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int n = read(s, buf, sizeof(buf));
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if(n == 0)
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exit(0);
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fwrite(buf, n, 1, stdout);
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}
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}
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}
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static int
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get_socket (const char *hostname, int port)
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{
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int ret;
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struct addrinfo *ai, *a;
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struct addrinfo hints;
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char portstr[NI_MAXSERV];
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memset (&hints, 0, sizeof(hints));
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hints.ai_socktype = SOCK_STREAM;
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snprintf (portstr, sizeof(portstr), "%d", ntohs(port));
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ret = getaddrinfo (hostname, portstr, &hints, &ai);
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if (ret)
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errx (1, "getaddrinfo %s: %s", hostname, gai_strerror (ret));
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for (a = ai; a != NULL; a = a->ai_next) {
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int s;
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s = socket (a->ai_family, a->ai_socktype, a->ai_protocol);
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if (s < 0)
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continue;
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if (connect (s, a->ai_addr, a->ai_addrlen) < 0) {
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close (s);
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continue;
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}
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freeaddrinfo (ai);
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return s;
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}
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err (1, "failed to connect to %s", hostname);
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}
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#ifdef KRB4
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static int
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doit_v4 (char *host, int port)
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{
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KTEXT_ST ticket;
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MSG_DAT msg_data;
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CREDENTIALS cred;
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des_key_schedule sched;
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int ret;
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int s = get_socket (host, port);
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ret = krb_sendauth(0,
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s,
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&ticket,
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"pop",
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host,
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krb_realmofhost(host),
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getpid(),
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&msg_data,
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&cred,
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sched,
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NULL,
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NULL,
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"KPOPV0.1");
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if(ret) {
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warnx("krb_sendauth: %s", krb_get_err_text(ret));
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return 1;
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}
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loop(s);
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return 0;
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}
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#endif
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#ifdef KRB5
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static int
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doit_v5 (char *host, int port)
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{
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krb5_error_code ret;
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krb5_context context;
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krb5_auth_context auth_context = NULL;
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krb5_principal server;
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int s = get_socket (host, port);
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ret = krb5_init_context (&context);
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if (ret)
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errx (1, "krb5_init_context failed: %d", ret);
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ret = krb5_sname_to_principal (context,
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host,
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"pop",
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KRB5_NT_SRV_HST,
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&server);
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if (ret) {
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warnx ("krb5_sname_to_principal: %s",
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krb5_get_err_text (context, ret));
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return 1;
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}
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ret = krb5_sendauth (context,
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&auth_context,
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&s,
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"KPOPV1.0",
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NULL,
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server,
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0,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL);
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if (ret) {
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warnx ("krb5_sendauth: %s",
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krb5_get_err_text (context, ret));
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return 1;
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}
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loop (s);
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return 0;
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}
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#endif
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#ifdef KRB4
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static int use_v4 = -1;
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#endif
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static int use_v5 = -1;
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static char *port_str;
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static int do_version;
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static int do_help;
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struct getargs args[] = {
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#ifdef KRB4
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{ "krb4", '4', arg_flag, &use_v4, "Use Kerberos V4",
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NULL },
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#endif
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{ "krb5", '5', arg_flag, &use_v5, "Use Kerberos V5",
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NULL },
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{ "port", 'p', arg_string, &port_str, "Use this port",
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"number-or-service" },
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{ "version", 0, arg_flag, &do_version, "Print version",
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NULL },
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{ "help", 0, arg_flag, &do_help, NULL,
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NULL }
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};
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static void
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usage (int ret)
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{
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arg_printusage (args,
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sizeof(args) / sizeof(args[0]),
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NULL,
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"hostname");
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exit (ret);
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}
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int
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main(int argc, char **argv)
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{
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int port = 0;
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int ret = 1;
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int optind = 0;
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setprogname(argv[0]);
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if (getarg (args, sizeof(args) / sizeof(args[0]), argc, argv,
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&optind))
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usage (1);
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argc -= optind;
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argv += optind;
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if (do_help)
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usage (0);
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if (do_version) {
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print_version (NULL);
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return 0;
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}
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if (argc < 1)
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usage (1);
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if (port_str) {
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struct servent *s = roken_getservbyname (port_str, "tcp");
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if (s)
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port = s->s_port;
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else {
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char *ptr;
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port = strtol (port_str, &ptr, 10);
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if (port == 0 && ptr == port_str)
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errx (1, "Bad port `%s'", port_str);
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port = htons(port);
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}
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}
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if (port == 0) {
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#ifdef KRB5
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port = krb5_getportbyname (NULL, "kpop", "tcp", 1109);
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#elif defined(KRB4)
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port = k_getportbyname ("kpop", "tcp", 1109);
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#else
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#error must define KRB4 or KRB5
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#endif
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}
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#if defined(KRB4) && defined(KRB5)
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if(use_v4 == -1 && use_v5 == 1)
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use_v4 = 0;
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if(use_v5 == -1 && use_v4 == 1)
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use_v5 = 0;
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#endif
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#ifdef KRB5
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if (ret && use_v5) {
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ret = doit_v5 (argv[0], port);
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}
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#endif
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#ifdef KRB4
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if (ret && use_v4) {
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ret = doit_v4 (argv[0], port);
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}
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#endif
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return ret;
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}
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