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author | markm <markm@FreeBSD.org> | 1997-09-04 06:04:33 +0000 |
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committer | markm <markm@FreeBSD.org> | 1997-09-04 06:04:33 +0000 |
commit | a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8 (patch) | |
tree | 0b84977f19022a965f8c6145f067f951173f6290 /crypto/kerberosIV/slave/kpropd.c | |
download | FreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.zip FreeBSD-src-a8a89cfaf983bc64f4b42f7c35209a5a36dd0fe8.tar.gz |
Initial import of KTH eBones. This has been cleaned up to only include
the "core" Kerberos functionality. The rest of the userland will get their
own changes later.
Diffstat (limited to 'crypto/kerberosIV/slave/kpropd.c')
-rw-r--r-- | crypto/kerberosIV/slave/kpropd.c | 301 |
1 files changed, 301 insertions, 0 deletions
diff --git a/crypto/kerberosIV/slave/kpropd.c b/crypto/kerberosIV/slave/kpropd.c new file mode 100644 index 0000000..e2b5f0a --- /dev/null +++ b/crypto/kerberosIV/slave/kpropd.c @@ -0,0 +1,301 @@ +/* + * 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 "slav_locl.h" + +#include "kprop.h" + +RCSID("$Id: kpropd.c,v 2.21 1997/05/02 17:52:13 assar Exp $"); + +#ifndef SBINDIR +#define SBINDIR "/usr/athena/sbin" +#endif + +struct sockaddr_in master, slave; + +char *database = DBM_FILE; + +char *lockfile = DB_DIR "/slave_propagation"; + +char *logfile = K_LOGFIL; + +char *kdb_util = SBINDIR "/kdb_util"; + +char *kdb_util_command = "load"; + +char *srvtab = ""; + +char realm[REALM_SZ]; + +static +int +copy_data(int from, int to, des_cblock *session, des_key_schedule schedule) +{ + unsigned char tmp[4]; + char buf[KPROP_BUFSIZ + 26]; + u_int32_t length; + int n; + + int kerr; + MSG_DAT m; + + while(1){ + n = krb_net_read(from, tmp, 4); + if(n == 0) + break; + if(n < 0){ + klog(L_KRB_PERR, "krb_net_read: %s", strerror(errno)); + return -1; + } + if(n != 4){ + klog(L_KRB_PERR, "Premature end of data"); + return -1; + } + length = (tmp[0] << 24) | (tmp[1] << 16) | (tmp[2] << 8) | tmp[3]; + if(length > sizeof(buf)){ + klog(L_KRB_PERR, "Giant packet received: %d", length); + return -1; + } + if(krb_net_read(from, buf, length) != length){ + klog(L_KRB_PERR, "Premature end of data"); + return -1; + } + kerr = krb_rd_priv (buf, length, schedule, session, &master, &slave, &m); + if(kerr != KSUCCESS){ + klog(L_KRB_PERR, "Kerberos error: %s", krb_get_err_text(kerr)); + return -1; + } + write(to, m.app_data, m.app_length); + } + return 0; +} + + +static +int +kprop(int s) +{ + char buf[128]; + int n; + KTEXT_ST ticket; + AUTH_DAT ad; + char sinst[INST_SZ]; + char command[1024]; + des_key_schedule schedule; + int mode; + int kerr; + int lock; + + n = sizeof(master); + if(getpeername(s, (struct sockaddr*)&master, &n) < 0){ + klog(L_KRB_PERR, "getpeername: %s", strerror(errno)); + return 1; + } + + n = sizeof(slave); + if(getsockname(s, (struct sockaddr*)&slave, &n) < 0){ + klog(L_KRB_PERR, "getsockname: %s", strerror(errno)); + return 1; + } + + klog(L_KRB_PERR, "Connection from %s", inet_ntoa(master.sin_addr)); + + n = krb_net_read(s, buf, KPROP_PROT_VERSION_LEN + 2); + if(n < KPROP_PROT_VERSION_LEN + 2){ + klog(L_KRB_PERR, "Premature end of data"); + return 1; + } + if(memcmp(buf, KPROP_PROT_VERSION, KPROP_PROT_VERSION_LEN) != 0){ + klog(L_KRB_PERR, "Bad protocol version string received"); + return 1; + } + mode = (buf[n-2] << 8) | buf[n-1]; + if(mode != KPROP_TRANSFER_PRIVATE){ + klog(L_KRB_PERR, "Bad transfer mode received: %d", mode); + return 1; + } + k_getsockinst(s, sinst, sizeof(sinst)); + kerr = krb_recvauth(KOPT_DO_MUTUAL, s, &ticket, + KPROP_SERVICE_NAME, sinst, + &master, &slave, + &ad, srvtab, schedule, + buf); + if(kerr != KSUCCESS){ + klog(L_KRB_PERR, "Kerberos error: %s", krb_get_err_text(kerr)); + return 1; + } + des_set_key(&ad.session, schedule); + + lock = open(lockfile, O_WRONLY|O_CREAT, 0600); + if(lock < 0){ + klog(L_KRB_PERR, "Failed to open file: %s", strerror(errno)); + return 1; + } + if(k_flock(lock, K_LOCK_EX | K_LOCK_NB)){ + close(lock); + klog(L_KRB_PERR, "Failed to lock file: %s", strerror(errno)); + return 1; + } + + if(ftruncate(lock, 0) < 0){ + close(lock); + klog(L_KRB_PERR, "Failed to lock file: %s", strerror(errno)); + return 1; + } + + if(copy_data(s, lock, &ad.session, schedule)){ + close(lock); + return 1; + } + close(lock); + snprintf(command, sizeof(command), + "%s %s %s %s", kdb_util, kdb_util_command, + lockfile, database); + if(system(command) == 0){ + klog(L_KRB_PERR, "Propagation finished successfully"); + return 0; + } + klog(L_KRB_PERR, "*** Propagation failed ***"); + return 1; +} + +static int +doit(void) +{ + return kprop(0); +} + +static int +doit_interactive(void) +{ + struct sockaddr_in sa; + int salen; + int s, s2; + int ret; + + s = socket(AF_INET, SOCK_STREAM, 0); + if(s < 0){ + klog(L_KRB_PERR, "socket: %s", strerror(errno)); + return 1; + } + memset(&sa, 0, sizeof(sa)); + sa.sin_family = AF_INET; + sa.sin_port = k_getportbyname ("krb_prop", "tcp", htons(KPROP_PORT)); + ret = bind(s, (struct sockaddr*)&sa, sizeof(sa)); + if (ret < 0) { + klog(L_KRB_PERR, "bind: %s", strerror(errno)); + return 1; + } + ret = listen(s, SOMAXCONN); + if (ret < 0) { + klog(L_KRB_PERR, "listen: %s", strerror(errno)); + return 1; + } + for(;;) { + salen = sizeof(sa); + s2 = accept(s, (struct sockaddr*)&sa, &salen); + switch(fork()){ + case -1: + klog(L_KRB_PERR, "fork: %s", strerror(errno)); + return 1; + case 0: + close(s); + kprop(s2); + return 1; + default: { + int status; + close(s2); + wait(&status); + } + } + } +} + +static void +usage (void) +{ + fprintf (stderr, + "Usage: kpropd [-i] [-d database] [-l log] [-m] [-[p|P] program]" + " [-r realm] [-s srvtab]\n"); + exit (1); +} + +int +main(int argc, char **argv) +{ + int opt; + int interactive = 0; + + krb_get_lrealm(realm, 1); + + while((opt = getopt(argc, argv, ":d:l:mp:P:r:s:i")) >= 0){ + switch(opt){ + case 'd': + database = optarg; + break; + case 'l': + logfile = optarg; + break; + case 'm': + kdb_util_command = "merge"; + break; + case 'p': + case 'P': + kdb_util = optarg; + break; + case 'r': + strcpy(realm, optarg); + break; + case 's': + srvtab = optarg; + break; + case 'i': + interactive = 1; + break; + default: + klog(L_KRB_PERR, "Bad option: -%c", optopt); + usage (); + exit(1); + } + } + kset_logfile(logfile); + if (interactive) + return doit_interactive (); + else + return doit (); +} |