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-rw-r--r--third_party/heimdal/appl/kf/kfd.c311
1 files changed, 311 insertions, 0 deletions
diff --git a/third_party/heimdal/appl/kf/kfd.c b/third_party/heimdal/appl/kf/kfd.c
new file mode 100644
index 0000000..9099bab
--- /dev/null
+++ b/third_party/heimdal/appl/kf/kfd.c
@@ -0,0 +1,311 @@
+/*
+ * Copyright (c) 1997 - 2002 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("$Id$");
+
+krb5_context context;
+char krb5_tkfile[MAXPATHLEN];
+
+static int help_flag;
+static int version_flag;
+static char *port_str;
+char *service = KF_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, NULL, NULL },
+ { "version", 0, arg_flag, &version_flag, NULL, NULL }
+};
+
+static int num_args = sizeof(args) / sizeof(args[0]);
+
+static void
+usage(int code, struct getargs *inargs, int num_inargs)
+{
+ arg_printusage(inargs, num_inargs, NULL, "");
+ exit(code);
+}
+
+static int
+server_setup(krb5_context *ctx, int argc, char **argv)
+{
+ int port = 0;
+ int local_argc;
+
+ local_argc = krb5_program_setup(ctx, 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 (*ctx, KF_PORT_NAME, "tcp", KF_PORT_NUM);
+
+ if(argv[local_argc] != NULL)
+ usage(1, args, num_args);
+
+ return port;
+}
+
+static int protocol_version;
+
+static krb5_boolean
+kfd_match_version(const void *arg, const char *version)
+{
+ if(strcmp(version, KF_VERSION_1) == 0) {
+ protocol_version = 1;
+ return TRUE;
+ } else if (strlen(version) == 4 &&
+ version[0] == '0' &&
+ version[1] == '.' &&
+ (version[2] == '4' || version[2] == '3') &&
+ islower((unsigned char)version[3])) {
+ protocol_version = 0;
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static int
+proto (int sock, const char *svc)
+{
+ 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 data;
+ krb5_data remotename;
+ krb5_data tk_file;
+ krb5_ccache ccache;
+ char ccname[MAXPATHLEN];
+ struct passwd *pwd;
+
+ status = krb5_auth_con_init (context, &auth_context);
+ if (status)
+ krb5_err(context, 1, status, "krb5_auth_con_init");
+
+ status = krb5_auth_con_setaddrs_from_fd (context,
+ auth_context,
+ &sock);
+ if (status)
+ krb5_err(context, 1, status, "krb5_auth_con_setaddr");
+
+ if(gethostname (hostname, sizeof(hostname)) < 0)
+ krb5_err(context, 1, errno, "gethostname");
+
+ status = krb5_sname_to_principal (context,
+ hostname,
+ svc,
+ KRB5_NT_SRV_HST,
+ &server);
+ if (status)
+ krb5_err(context, 1, status, "krb5_sname_to_principal");
+
+ status = krb5_recvauth_match_version (context,
+ &auth_context,
+ &sock,
+ kfd_match_version,
+ NULL,
+ server,
+ 0,
+ NULL,
+ &ticket);
+ if (status)
+ krb5_err(context, 1, status, "krb5_recvauth");
+
+ status = krb5_unparse_name (context,
+ ticket->client,
+ &name);
+ if (status)
+ krb5_err(context, 1, status, "krb5_unparse_name");
+
+ if(protocol_version == 0) {
+ data.data = "old clnt"; /* XXX old clients only had room for
+ 10 bytes of message, and also
+ didn't show it to the user */
+ data.length = strlen(data.data) + 1;
+ krb5_write_message(context, &sock, &data);
+ sleep(2); /* XXX give client time to finish */
+ krb5_errx(context, 1, "old client; exiting");
+ }
+
+ status=krb5_read_priv_message (context, auth_context,
+ &sock, &remotename);
+ if (status)
+ krb5_err(context, 1, status, "krb5_read_message");
+ status=krb5_read_priv_message (context, auth_context,
+ &sock, &tk_file);
+ if (status)
+ krb5_err(context, 1, status, "krb5_read_message");
+
+ krb5_data_zero (&data);
+
+ if(((char*)remotename.data)[remotename.length-1] != '\0')
+ krb5_errx(context, 1, "unterminated received");
+ if(((char*)tk_file.data)[tk_file.length-1] != '\0')
+ krb5_errx(context, 1, "unterminated received");
+
+ status = krb5_read_priv_message(context, auth_context, &sock, &data);
+
+ if (status) {
+ krb5_err(context, 1, errno, "krb5_read_priv_message");
+ goto out;
+ }
+
+ pwd = getpwnam ((char *)(remotename.data));
+ if (pwd == NULL) {
+ status=1;
+ krb5_warnx(context, "getpwnam: %s failed",(char *)(remotename.data));
+ goto out;
+ }
+
+ if(!krb5_kuserok (context,
+ ticket->client,
+ (char *)(remotename.data))) {
+ status=1;
+ krb5_warnx(context, "krb5_kuserok: permission denied");
+ goto out;
+ }
+
+ if (setgid(pwd->pw_gid) < 0) {
+ krb5_warn(context, errno, "setgid");
+ goto out;
+ }
+ if (setuid(pwd->pw_uid) < 0) {
+ krb5_warn(context, errno, "setuid");
+ goto out;
+ }
+
+ if (tk_file.length != 1)
+ snprintf (ccname, sizeof(ccname), "%s", (char *)(tk_file.data));
+ else
+ snprintf (ccname, sizeof(ccname), "FILE:/tmp/krb5cc_%lu",
+ (unsigned long)pwd->pw_uid);
+
+ status = krb5_cc_resolve (context, ccname, &ccache);
+ if (status) {
+ krb5_warn(context, status, "krb5_cc_resolve");
+ goto out;
+ }
+ status = krb5_cc_initialize (context, ccache, ticket->client);
+ if (status) {
+ krb5_warn(context, status, "krb5_cc_initialize");
+ goto out;
+ }
+ status = krb5_rd_cred2 (context, auth_context, ccache, &data);
+ krb5_cc_close (context, ccache);
+ if (status) {
+ krb5_warn(context, status, "krb5_rd_cred");
+ goto out;
+
+ }
+ strlcpy(krb5_tkfile,ccname,sizeof(krb5_tkfile));
+ krb5_warnx(context, "%s forwarded ticket to %s,%s",
+ name,
+ (char *)(remotename.data),ccname);
+ out:
+ if (status) {
+ strlcpy(ret_string, "no", sizeof(ret_string));
+ krb5_warnx(context, "failed");
+ } else {
+ strlcpy(ret_string, "ok", sizeof(ret_string));
+ }
+
+ krb5_data_free (&tk_file);
+ krb5_data_free (&remotename);
+ krb5_data_free (&data);
+ free(name);
+
+ data.data = ret_string;
+ data.length = strlen(ret_string) + 1;
+ status = krb5_write_priv_message(context, auth_context, &sock, &data);
+ krb5_auth_con_free(context, auth_context);
+
+ return status;
+}
+
+static int
+doit (int port, const char *svc)
+{
+ if (do_inetd)
+ mini_inetd(port, NULL);
+ return proto (STDIN_FILENO, svc);
+}
+
+int
+main(int argc, char **argv)
+{
+ int port;
+ int ret;
+ krb5_log_facility *fac;
+
+ setprogname (argv[0]);
+ roken_openlog (argv[0], LOG_ODELAY | LOG_PID,LOG_AUTH);
+ port = server_setup(&context, argc, argv);
+ ret = krb5_openlog(context, "kfd", &fac);
+ if(ret) krb5_err(context, 1, ret, "krb5_openlog");
+ ret = krb5_set_warn_dest(context, fac);
+ if(ret) krb5_err(context, 1, ret, "krb5_set_warn_dest");
+
+ ret = doit (port, service);
+ closelog();
+ if (ret == 0 && regpag_str != NULL)
+ ret = execl(regpag_str, "regpag", "-t", krb5_tkfile, "-r", NULL);
+ return ret;
+}
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