summaryrefslogtreecommitdiffstats
path: root/crypto/heimdal/appl/kf/kfd.c
diff options
context:
space:
mode:
Diffstat (limited to 'crypto/heimdal/appl/kf/kfd.c')
-rw-r--r--crypto/heimdal/appl/kf/kfd.c326
1 files changed, 326 insertions, 0 deletions
diff --git a/crypto/heimdal/appl/kf/kfd.c b/crypto/heimdal/appl/kf/kfd.c
new file mode 100644
index 0000000..9ad434f
--- /dev/null
+++ b/crypto/heimdal/appl/kf/kfd.c
@@ -0,0 +1,326 @@
+/*
+ * Copyright (c) 1997 - 1999 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. 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 "kf_locl.h"
+RCSID("$Id: kfd.c,v 1.7 1999/12/02 17:04:55 joda Exp $");
+
+krb5_context context;
+char krb5_tkfile[MAXPATHLEN];
+
+static int help_flag;
+static int version_flag;
+static char *port_str;
+char *service = SERVICE;
+int do_inetd = 0;
+static char *regpag_str=NULL;
+
+static struct getargs args[] = {
+ { "port", 'p', arg_string, &port_str, "port to listen to", "port" },
+ { "inetd",'i',arg_flag, &do_inetd,
+ "Not started from inetd", NULL },
+ { "regpag",'R',arg_string,&regpag_str,"path to regpag binary","regpag"},
+ { "help", 'h', arg_flag, &help_flag },
+ { "version", 0, arg_flag, &version_flag }
+};
+
+static int num_args = sizeof(args) / sizeof(args[0]);
+
+static void
+usage(int code, struct getargs *args, int num_args)
+{
+ arg_printusage(args, num_args, NULL, "");
+ exit(code);
+}
+
+static int
+server_setup(krb5_context *context, int argc, char **argv)
+{
+ int port = 0;
+ int local_argc;
+
+ local_argc = krb5_program_setup(context, argc, argv, args, num_args, usage);
+
+ if(help_flag)
+ (*usage)(0, args, num_args);
+ if(version_flag) {
+ print_version(NULL);
+ exit(0);
+ }
+
+ if(port_str){
+ struct servent *s = roken_getservbyname(port_str, "tcp");
+ if(s)
+ port = s->s_port;
+ else {
+ char *ptr;
+
+ port = strtol (port_str, &ptr, 10);
+ if (port == 0 && ptr == port_str)
+ errx (1, "Bad port `%s'", port_str);
+ port = htons(port);
+ }
+ }
+
+ if (port == 0)
+ port = krb5_getportbyname (*context, PORT, "tcp", PORT_NUM);
+
+ if(argv[local_argc] != NULL)
+ usage(1, args, num_args);
+
+ return port;
+}
+
+static void
+syslog_and_die (const char *m, ...)
+{
+ va_list args;
+
+ va_start(args, m);
+ vsyslog (LOG_ERR, m, args);
+ va_end(args);
+ exit (1);
+}
+
+static void
+syslog_and_cont (const char *m, ...)
+{
+ va_list args;
+
+ va_start(args, m);
+ vsyslog (LOG_ERR, m, args);
+ va_end(args);
+ return;
+}
+
+static int
+proto (int sock, const char *service)
+{
+ krb5_auth_context auth_context;
+ krb5_error_code status;
+ krb5_principal server;
+ krb5_ticket *ticket;
+ char *name;
+ char ret_string[10];
+ char hostname[MAXHOSTNAMELEN];
+ krb5_data packet;
+ krb5_data data;
+ krb5_data remotename;
+ krb5_data tk_file;
+
+ u_int32_t len, net_len;
+ krb5_ccache ccache;
+ char ccname[MAXPATHLEN];
+ struct passwd *pwd;
+ ssize_t n;
+
+ status = krb5_auth_con_init (context, &auth_context);
+ if (status)
+ syslog_and_die("krb5_auth_con_init: %s",
+ krb5_get_err_text(context, status));
+
+ status = krb5_auth_con_setaddrs_from_fd (context,
+ auth_context,
+ &sock);
+ if (status)
+ syslog_and_die("krb5_auth_con_setaddr: %s",
+ krb5_get_err_text(context, status));
+
+ if(gethostname (hostname, sizeof(hostname)) < 0)
+ syslog_and_die("gethostname: %s",strerror(errno));
+
+ status = krb5_sname_to_principal (context,
+ hostname,
+ service,
+ KRB5_NT_SRV_HST,
+ &server);
+ if (status)
+ syslog_and_die("krb5_sname_to_principal: %s",
+ krb5_get_err_text(context, status));
+
+ status = krb5_recvauth (context,
+ &auth_context,
+ &sock,
+ VERSION,
+ server,
+ 0,
+ NULL,
+ &ticket);
+ if (status)
+ syslog_and_die("krb5_recvauth: %s",
+ krb5_get_err_text(context, status));
+
+ status = krb5_unparse_name (context,
+ ticket->client,
+ &name);
+ if (status)
+ syslog_and_die("krb5_unparse_name: %s",
+ krb5_get_err_text(context, status));
+
+ status=krb5_read_message (context, &sock, &remotename);
+ if (status) {
+ syslog_and_die("krb5_read_message: %s",
+ krb5_get_err_text(context, status));
+ }
+ status=krb5_read_message (context, &sock, &tk_file);
+ if (status) {
+ syslog_and_die("krb5_read_message: %s",
+ krb5_get_err_text(context, status));
+ }
+
+ krb5_data_zero (&data);
+ krb5_data_zero (&packet);
+
+ n = krb5_net_read (context, &sock, &net_len, 4);
+ if (n < 0)
+ syslog_and_die("krb5_net_read: %s", strerror(errno));
+ if (n == 0)
+ syslog_and_die("EOF in krb5_net_read");
+
+ len = ntohl(net_len);
+ krb5_data_alloc (&packet, len);
+ n = krb5_net_read (context, &sock, packet.data, len);
+ if (n < 0)
+ syslog_and_die("krb5_net_read: %s", strerror(errno));
+ if (n == 0)
+ syslog_and_die("EOF in krb5_net_read");
+
+ status = krb5_rd_priv (context,
+ auth_context,
+ &packet,
+ &data,
+ NULL);
+ if (status) {
+ syslog_and_cont("krb5_rd_priv: %s",
+ krb5_get_err_text(context, status));
+ goto out;
+ }
+
+ pwd = getpwnam ((char *)(remotename.data));
+ if (pwd == NULL) {
+ status=1;
+ syslog_and_cont("getpwnam: %s failed",(char *)(remotename.data));
+ goto out;
+ }
+
+ if(!krb5_kuserok (context,
+ ticket->client,
+ (char *)(remotename.data))) {
+ status=1;
+ syslog_and_cont("krb5_kuserok: permission denied");
+ goto out;
+ }
+
+ if (setgid(pwd->pw_gid) < 0) {
+ syslog_and_cont ("setgid: %s", strerror(errno));
+ goto out;
+ }
+ if (setuid(pwd->pw_uid) < 0) {
+ syslog_and_cont ("setuid: %s", strerror(errno));
+ goto out;
+ }
+
+ if (tk_file.length != 1)
+ snprintf (ccname, sizeof(ccname), "%s", (char *)(tk_file.data));
+ else
+ snprintf (ccname, sizeof(ccname), "FILE:/tmp/krb5cc_%u",pwd->pw_uid);
+
+ status = krb5_cc_resolve (context, ccname, &ccache);
+ if (status) {
+ syslog_and_cont("krb5_cc_resolve: %s",
+ krb5_get_err_text(context, status));
+ goto out;
+ }
+ status = krb5_cc_initialize (context, ccache, ticket->client);
+ if (status) {
+ syslog_and_cont("krb5_cc_initialize: %s",
+ krb5_get_err_text(context, status));
+ goto out;
+ }
+ status = krb5_rd_cred (context, auth_context, ccache, &data);
+ krb5_cc_close (context, ccache);
+ if (status) {
+ syslog_and_cont("krb5_rd_cred: %s",
+ krb5_get_err_text(context, status));
+ goto out;
+
+ }
+ strlcpy(krb5_tkfile,ccname,sizeof(krb5_tkfile));
+ syslog_and_cont("%s forwarded ticket to %s,%s",
+ name,
+ (char *)(remotename.data),ccname);
+out:
+ if (status) {
+ strcpy(ret_string, "no");
+ syslog_and_cont("failed");
+ } else {
+ strcpy(ret_string, "ok");
+ }
+
+ krb5_data_free (&tk_file);
+ krb5_data_free (&remotename);
+ krb5_data_free (&packet);
+ krb5_data_free (&data);
+ free(name);
+
+ len = strlen(ret_string) + 1;
+ net_len = htonl(len);
+ if (krb5_net_write (context, &sock, &net_len, 4) != 4)
+ return 1;
+ if (krb5_net_write (context, &sock, ret_string, len) != len)
+ return 1;
+ return status;
+}
+
+static int
+doit (int port, const char *service)
+{
+ if (do_inetd)
+ mini_inetd(port);
+ return proto (STDIN_FILENO, service);
+}
+
+int
+main(int argc, char **argv)
+{
+ int port;
+ int ret;
+
+ set_progname (argv[0]);
+ roken_openlog (argv[0], LOG_ODELAY | LOG_PID,LOG_AUTH);
+ port = server_setup(&context, argc, argv);
+ ret = doit (port, service);
+ closelog();
+ if (ret == 0 && regpag_str != NULL)
+ ret = execl(regpag_str, "regpag", "-t", krb5_tkfile, "-r", NULL);
+ return ret;
+}
OpenPOWER on IntegriCloud