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/*
* $FreeBSD$
* $Source: /home/ncvs/src/eBones/usr.bin/rkinit/rkinit.c,v $
* $Author: gibbs $
*
* This is an rkinit client
*/
#if !defined(lint) && !defined(SABER) && !defined(LOCORE) && defined(RCS_HDRS)
static char *rcsid = "$FreeBSD$";
#endif /* lint || SABER || LOCORE || RCS_HDRS */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <netdb.h>
#include <pwd.h>
#include <krb.h>
#include <des.h>
#include <com_err.h>
#include <rkinit.h>
#include <rkinit_err.h>
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#ifdef __STDC__
static void usage(void)
#else
static void usage()
#endif /* __STDC__ */
{
fprintf(stderr,"Usage: rkinit [host] options\n");
fprintf(stderr,
"Options: [-l username] [-k krb_realm] [-p principal] [-f tktfile]\n");
fprintf(stderr, " [-t lifetime] [-h host] [-notimeout]\n");
fprintf(stderr, "A host must be specified either with the -h option ");
fprintf(stderr, "or as the first argument.\n");
exit(1);
}
int
#ifdef __STDC__
main(int argc, char *argv[])
#else
main(argc, argv)
int argc;
char *argv[];
#endif /* __STDC__ */
{
char *whoami; /* Name of this program */
char principal[MAX_K_NAME_SZ]; /* Principal for which to get tickets */
char *host = NULL; /* Remote host */
char *username = 0; /* Username of owner of ticket */
char r_krealm[REALM_SZ]; /* Kerberos realm of remote host */
char aname[ANAME_SZ]; /* Aname of remote ticket file */
char inst[INST_SZ]; /* Instance of remote ticket file */
char realm[REALM_SZ]; /* Realm of remote ticket file */
char *tktfilename = NULL; /* Name of ticket file on remote host */
u_long lifetime = DEFAULT_TKT_LIFE; /* Lifetime of remote tickets */
int timeout = TRUE; /* Should we time out? */
rkinit_info info; /* Information needed by rkinit */
struct passwd *localid; /* To determine local id */
int status = 0; /* general error number */
int i;
bzero(r_krealm, sizeof(r_krealm));
bzero(principal, sizeof(principal));
bzero(aname, sizeof(aname));
bzero(inst, sizeof(inst));
bzero(realm, sizeof(realm));
/* Parse commandline arguements. */
if ((whoami = rindex(argv[0], '/')) == 0)
whoami = argv[0];
else
whoami++;
if (argc < 2) usage();
if (argv[1][0] != '-') {
host = argv[1];
i = 2;
}
else
i = 1;
for (/* i initialized above */; i < argc; i++) {
if (strcmp(argv[i], "-h") == NULL) {
if (++i >= argc)
usage();
else
host = argv[i];
}
else if (strcmp(argv[i], "-l") == NULL) {
if (++i >= argc)
usage();
else
username = argv[i];
}
else if (strcmp(argv[i], "-k") == NULL) {
if (++i >= argc)
usage();
else
strncpy(r_krealm, argv[i], sizeof(r_krealm) - 1);
}
else if (strcmp(argv[i], "-p") == NULL) {
if (++i >= argc)
usage();
else
strncpy(principal, argv[i], sizeof(principal) - 1);
}
else if (strcmp(argv[i], "-f") == NULL) {
if (++i >= argc)
usage();
else
tktfilename = argv[i];
}
else if (strcmp(argv[i], "-t") == NULL) {
if (++i >= argc)
usage();
else {
lifetime = atoi(argv[i])/5;
if (lifetime == 0)
lifetime = 1;
else if (lifetime > 255)
lifetime = 255;
}
}
else if (strcmp(argv[i], "-notimeout") == NULL)
timeout = FALSE;
else
usage();
}
if (host == NULL)
usage();
/* Initialize the realm of the remote host if necessary */
if (r_krealm[0] == 0) {
/*
* Try to figure out the realm of the remote host. If the
* remote host is unknown, don't worry about it; the library
* will handle the error better and print a good error message.
*/
struct hostent *hp;
if ((hp = gethostbyname(host)))
strcpy(r_krealm, krb_realmofhost(hp->h_name));
}
/* If no username was specified, use local id on client host */
if (username == 0) {
if ((localid = getpwuid(getuid())) == 0) {
fprintf(stderr, "You can not be found in the password file.\n");
exit(1);
}
username = localid->pw_name;
}
/* Find out who will go in the ticket file */
if (! principal[0]) {
if ((status = krb_get_tf_fullname(TKT_FILE, aname, inst, realm))
!= KSUCCESS) {
/*
* If user has no ticket file and principal was not specified,
* we will try to get tickets for username@remote_realm
*/
strcpy(aname, username);
strcpy(realm, r_krealm);
}
}
else {
if ((status = kname_parse(aname, inst, realm, principal))
!= KSUCCESS) {
fprintf(stderr, "%s\n", krb_err_txt[status]);
exit(1);
}
if (strlen(realm) == 0) {
if (krb_get_lrealm(realm, 1) != KSUCCESS)
strcpy(realm, KRB_REALM);
}
}
bzero((char *)&info, sizeof(info));
strcpy(info.aname, aname);
strcpy(info.inst, inst);
strcpy(info.realm, realm);
strcpy(info.sname, "krbtgt");
strcpy(info.sinst, realm);
strncpy(info.username, username, sizeof(info.username) - 1);
if (tktfilename)
strncpy(info.tktfilename, tktfilename, sizeof(info.tktfilename) - 1);
info.lifetime = lifetime;
if ((status = rkinit(host, r_krealm, &info, timeout))) {
com_err(whoami, status, "while obtaining remote tickets:");
fprintf(stderr, "%s\n", rkinit_errmsg(0));
exit(1);
}
exit(0);
}
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