diff options
Diffstat (limited to 'crypto/kerberosIV/appl/kip/common.c')
| -rw-r--r-- | crypto/kerberosIV/appl/kip/common.c | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/crypto/kerberosIV/appl/kip/common.c b/crypto/kerberosIV/appl/kip/common.c deleted file mode 100644 index b21d03dc866c..000000000000 --- a/crypto/kerberosIV/appl/kip/common.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * 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: common.c,v 1.12 1997/05/02 14:28:06 assar Exp $"); - -/* - * Copy packets from `tundev' to `netdev' or vice versa. - * Mode is used when reading from `tundev' - */ - -int -copy_packets (int tundev, int netdev, int mtu, des_cblock *iv, - des_key_schedule schedule) -{ - des_cblock iv1, iv2; - int num1 = 0, num2 = 0; - u_char *buf; - - buf = malloc (mtu + 2); - if (buf == NULL) { - warnx("malloc(%d) failed", mtu); - return 1; - } - - memcpy (&iv1, iv, sizeof(iv1)); - memcpy (&iv2, iv, sizeof(iv2)); - for (;;) { - fd_set fdset; - int ret, len; - - FD_ZERO(&fdset); - FD_SET(tundev, &fdset); - FD_SET(netdev, &fdset); - - ret = select (max(tundev, netdev)+1, &fdset, NULL, NULL, NULL); - if (ret < 0 && errno != EINTR) { - warn ("select"); - return 1; - } - if (FD_ISSET(tundev, &fdset)) { - ret = read (tundev, buf + 2, mtu); - if (ret == 0) - return 0; - if (ret < 0) { - if (errno == EINTR) - continue; - else { - warn("read"); - return ret; - } - } - buf[0] = ret >> 8; - buf[1] = ret & 0xFF; - ret += 2; - des_cfb64_encrypt (buf, buf, ret, schedule, - &iv1, &num1, DES_ENCRYPT); - ret = krb_net_write (netdev, buf, ret); - if (ret < 0) { - warn("write"); - return ret; - } - } - if (FD_ISSET(netdev, &fdset)) { - ret = read (netdev, buf, 2); - if (ret == 0) - return 0; - if (ret < 0) { - if (errno == EINTR) - continue; - else { - warn("read"); - return ret; - } - } - des_cfb64_encrypt (buf, buf, 2, schedule, - &iv2, &num2, DES_DECRYPT); - len = (buf[0] << 8 ) | buf[1]; - ret = krb_net_read (netdev, buf + 2, len); - if (ret == 0) - return 0; - if (ret < 0) { - if (errno == EINTR) - continue; - else { - warn("read"); - return ret; - } - } - des_cfb64_encrypt (buf + 2, buf + 2, len, schedule, - &iv2, &num2, DES_DECRYPT); - ret = krb_net_write (tundev, buf + 2, len); - if (ret < 0) { - warn("write"); - return ret; - } - } - } -} - -/* - * Signal handler that justs waits for the children when they die. - */ - -RETSIGTYPE -childhandler (int sig) -{ - pid_t pid; - int status; - - do { - pid = waitpid (-1, &status, WNOHANG|WUNTRACED); - } while(pid > 0); - signal (SIGCHLD, childhandler); - SIGRETURN(0); -} - -/* - * Find a free tunnel device and open it. - */ - -int -tunnel_open (void) -{ - int fd; - int i; - char name[64]; - - for (i = 0; i < 256; ++i) { - snprintf (name, sizeof(name), "%s%s%d", _PATH_DEV, TUNDEV, i); - fd = open (name, O_RDWR, 0); - if (fd >= 0) - break; - if (errno == ENOENT || errno == ENODEV) { - warn("open %s", name); - return fd; - } - } - if (fd < 0) - warn("open %s" ,name); - return fd; -} |