diff options
Diffstat (limited to 'crypto/kerberosIV/appl/kip/kip.c')
| -rw-r--r-- | crypto/kerberosIV/appl/kip/kip.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/crypto/kerberosIV/appl/kip/kip.c b/crypto/kerberosIV/appl/kip/kip.c new file mode 100644 index 0000000..e324a28 --- /dev/null +++ b/crypto/kerberosIV/appl/kip/kip.c @@ -0,0 +1,179 @@ +/* + * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan + * (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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. 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. + */ + +#include "kip.h" + +RCSID("$Id: kip.c,v 1.15 1997/05/11 10:54:51 assar Exp $"); + +static void +usage() +{ + fprintf (stderr, "Usage: %s host\n", + __progname); + exit (1); +} + +/* + * Establish authenticated connection + */ + +static int +connect_host (char *host, des_cblock *key, des_key_schedule schedule) +{ + CREDENTIALS cred; + KTEXT_ST text; + MSG_DAT msg; + int status; + struct sockaddr_in thisaddr, thataddr; + int addrlen; + struct hostent *hostent; + int s; + u_char b; + char **p; + + hostent = gethostbyname (host); + if (hostent == NULL) { + warnx ("gethostbyname '%s': %s", host, +#ifdef HAVE_H_ERRNO + hstrerror(h_errno) +#else + "unknown error" +#endif + ); + return -1; + } + + memset (&thataddr, 0, sizeof(thataddr)); + thataddr.sin_family = AF_INET; + thataddr.sin_port = k_getportbyname ("kip", "tcp", htons(KIPPORT)); + + for(p = hostent->h_addr_list; *p; ++p) { + int one = 1; + + memcpy (&thataddr.sin_addr, *p, sizeof(thataddr.sin_addr)); + + s = socket (AF_INET, SOCK_STREAM, 0); + if (s < 0) { + warn ("socket"); + return -1; + } + +#if defined(TCP_NODELAY) && defined(HAVE_SETSOCKOPT) + setsockopt (s, IPPROTO_TCP, TCP_NODELAY, (void *)&one, sizeof(one)); +#endif + + if (connect (s, (struct sockaddr *)&thataddr, sizeof(thataddr)) < 0) { + warn ("connect(%s)", host); + close (s); + continue; + } else { + break; + } + } + if (*p == NULL) + return -1; + + addrlen = sizeof(thisaddr); + if (getsockname (s, (struct sockaddr *)&thisaddr, &addrlen) < 0 || + addrlen != sizeof(thisaddr)) { + warn ("getsockname(%s)", host); + return -1; + } + status = krb_sendauth (KOPT_DO_MUTUAL, s, &text, "rcmd", + host, krb_realmofhost (host), + getpid(), &msg, &cred, schedule, + &thisaddr, &thataddr, KIP_VERSION); + if (status != KSUCCESS) { + warnx("%s: %s", host, + krb_get_err_text(status)); + return -1; + } + if (read (s, &b, sizeof(b)) != sizeof(b)) { + warn ("read"); + return -1; + } + if (b) { + char buf[BUFSIZ]; + + read (s, buf, sizeof(buf)); + buf[BUFSIZ - 1] = '\0'; + + warnx ("%s: %s", host, buf); + return -1; + } + + memcpy(key, &cred.session, sizeof(des_cblock)); + return s; +} + +/* + * Connect to the given host. + */ + +static int +doit (char *host) +{ + des_key_schedule schedule; + des_cblock iv; + int other, this; + struct ifreq ifreq; + int sock; + + other = connect_host (host, &iv, schedule); + if (other < 0) + return 1; + this = tunnel_open (); + if (this < 0) + return 1; + return copy_packets (this, other, TUNMTU, &iv, schedule); +} + +/* + * kip - forward IP packets over a kerberos-encrypted channel. + * + */ + +int +main(int argc, char **argv) +{ + set_progname (argv[0]); + + if (argc != 2) + usage (); + return doit (argv[1]); +} |
