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author | markm <markm@FreeBSD.org> | 2000-01-09 20:58:00 +0000 |
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committer | markm <markm@FreeBSD.org> | 2000-01-09 20:58:00 +0000 |
commit | 5f68254a360fdb4f3ebc30f6ad6507556425dd0a (patch) | |
tree | a96b9cd24173c10bba3fd7e2acf5d68e5bb0773e /crypto/heimdal/appl/kf/kfd.c | |
parent | d88c9767e1793993cc2242ccfb9a8ba002a061c6 (diff) | |
parent | 4ecbd6db44d79348bc815f31096e53104f50838b (diff) | |
download | FreeBSD-src-5f68254a360fdb4f3ebc30f6ad6507556425dd0a.zip FreeBSD-src-5f68254a360fdb4f3ebc30f6ad6507556425dd0a.tar.gz |
This commit was generated by cvs2svn to compensate for changes in r55682,
which included commits to RCS files with non-trunk default branches.
Diffstat (limited to 'crypto/heimdal/appl/kf/kfd.c')
-rw-r--r-- | crypto/heimdal/appl/kf/kfd.c | 326 |
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,®pag_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; +} |