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.

1 files changed, 201 insertions, 0 deletions

diff --git a/crypto/kerberosIV/appl/kauth/kauthd.c b/crypto/kerberosIV/appl/kauth/kauthd.c
new file mode 100644
index 0000000..b6a40cf
--- /dev/null
+++ b/crypto/kerberosIV/appl/kauth/kauthd.c
@@ -0,0 +1,201 @@
+/*
+ * 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 "kauth.h"
+
+RCSID("$Id: kauthd.c,v 1.22 1997/05/18 20:37:55 assar Exp $");
+
+krb_principal princ;
+static char locuser[SNAME_SZ + 1];
+static int  lifetime;
+static char tktfile[MaxPathLen + 1];
+
+struct remote_args {
+     int sock;
+     des_key_schedule *schedule;
+     des_cblock *session;
+     struct sockaddr_in *me, *her;
+};
+
+static int
+decrypt_remote_tkt (char *user, char *inst, char *realm, void *varg,
+		    key_proc_t key_proc, KTEXT *cipp)
+{
+     char buf[BUFSIZ];
+     void *ptr;
+     int len;
+     KTEXT cip  = *cipp;
+     struct remote_args *args = (struct remote_args *)varg;
+
+     write_encrypted (args->sock, cip->dat, cip->length,
+		      *args->schedule, args->session, args->me,
+		      args->her);
+     len = read_encrypted (args->sock, buf, sizeof(buf), &ptr, *args->schedule,
+			   args->session, args->her, args->me);
+     memcpy(cip->dat, ptr, cip->length);
+	  
+     return 0;
+}
+
+static int
+doit(int sock)
+{
+     int status;
+     KTEXT_ST ticket;
+     AUTH_DAT auth;
+     char instance[INST_SZ + 1];
+     des_key_schedule schedule;
+     struct sockaddr_in thisaddr, thataddr;
+     int addrlen;
+     int len;
+     char buf[BUFSIZ];
+     void *data;
+     struct passwd *passwd;
+     char version[KRB_SENDAUTH_VLEN + 1];
+     char remotehost[MaxHostNameLen];
+
+     addrlen = sizeof(thisaddr);
+     if (getsockname (sock, (struct sockaddr *)&thisaddr, &addrlen) < 0 ||
+	 addrlen != sizeof(thisaddr)) {
+	  return 1;
+     }
+     addrlen = sizeof(thataddr);
+     if (getpeername (sock, (struct sockaddr *)&thataddr, &addrlen) < 0 ||
+	 addrlen != sizeof(thataddr)) {
+	  return 1;
+     }
+
+     inaddr2str (thataddr.sin_addr, remotehost, sizeof(remotehost));
+
+     k_getsockinst (sock, instance, sizeof(instance));
+     status = krb_recvauth (KOPT_DO_MUTUAL, sock, &ticket, "rcmd", instance,
+			    &thataddr, &thisaddr, &auth, "", schedule,
+			    version);
+     if (status != KSUCCESS ||
+	 strncmp(version, KAUTH_VERSION, KRB_SENDAUTH_VLEN) != 0) {
+	  return 1;
+     }
+     len = read_encrypted (sock, buf, sizeof(buf), &data, schedule,
+			   &auth.session, &thataddr, &thisaddr);
+     if (len < 0) {
+	  write_encrypted (sock, "read_enc failed",
+			   sizeof("read_enc failed") - 1, schedule,
+			   &auth.session, &thisaddr, &thataddr);
+	  return 1;
+     }
+     if (unpack_args(data, &princ, &lifetime, locuser,
+		     tktfile)) {
+	  write_encrypted (sock, "unpack_args failed",
+			   sizeof("unpack_args failed") - 1, schedule,
+			   &auth.session, &thisaddr, &thataddr);
+	  return 1;
+     }
+
+     if( kuserok(&auth, locuser) != 0) {
+	 snprintf(buf, sizeof(buf), "%s cannot get tickets for %s",
+		  locuser, krb_unparse_name(&princ));
+	 syslog (LOG_ERR, buf);
+	 write_encrypted (sock, buf, strlen(buf), schedule,
+			  &auth.session, &thisaddr, &thataddr);
+	 return 1;
+     }
+     passwd = k_getpwnam (locuser);
+     if (passwd == NULL) {
+	  snprintf (buf, sizeof(buf), "No user '%s'", locuser);
+	  syslog (LOG_ERR, buf);
+	  write_encrypted (sock, buf, strlen(buf), schedule,
+			   &auth.session, &thisaddr, &thataddr);
+	  return 1;
+     }
+     if (setgid (passwd->pw_gid) ||
+	 initgroups(passwd->pw_name, passwd->pw_gid) ||
+	 setuid(passwd->pw_uid)) {
+	  snprintf (buf, sizeof(buf), "Could not change user");
+	  syslog (LOG_ERR, buf);
+	  write_encrypted (sock, buf, strlen(buf), schedule,
+			   &auth.session, &thisaddr, &thataddr);
+	  return 1;
+     }
+     write_encrypted (sock, "ok", sizeof("ok") - 1, schedule,
+		      &auth.session, &thisaddr, &thataddr);
+
+     if (*tktfile == 0)
+	 snprintf(tktfile, sizeof(tktfile), "%s%u", TKT_ROOT, (unsigned)getuid());
+     krb_set_tkt_string (tktfile);
+
+     {
+	  struct remote_args arg;
+
+	  arg.sock     = sock;
+	  arg.schedule = &schedule;
+	  arg.session  = &auth.session;
+	  arg.me       = &thisaddr;
+	  arg.her      = &thataddr;
+
+	  status = krb_get_in_tkt (princ.name, princ.instance, princ.realm,
+				   KRB_TICKET_GRANTING_TICKET,
+				   princ.realm,
+				   lifetime, NULL, decrypt_remote_tkt, &arg);
+     }
+     if (status == KSUCCESS) {
+	 syslog (LOG_INFO, "from %s(%s): %s -> %s",
+		 remotehost,
+		 inet_ntoa(thataddr.sin_addr),
+		 locuser,
+		 krb_unparse_name (&princ));
+	  write_encrypted (sock, "ok", sizeof("ok") - 1, schedule,
+			   &auth.session, &thisaddr, &thataddr);
+	  return 0;
+     } else {
+	  snprintf (buf, sizeof(buf), "TGT failed: %s", krb_get_err_text(status));
+	  syslog (LOG_NOTICE, buf);
+	  write_encrypted (sock, buf, strlen(buf), schedule,
+			   &auth.session, &thisaddr, &thataddr);
+	  return 1;
+     }
+}
+
+int
+main (int argc, char **argv)
+{
+    openlog ("kauthd", LOG_ODELAY, LOG_AUTH);
+
+    if(argc > 1 && strcmp(argv[1], "-i") == 0)
+	mini_inetd (k_getportbyname("kauth", "tcp", htons(KAUTH_PORT)));
+    return doit(STDIN_FILENO);
+}