315 lines
7.8 KiB
C
315 lines
7.8 KiB
C
/*
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* Copyright 1987, 1988 by the Massachusetts Institute of Technology.
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*
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* For copying and distribution information, please see the file
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* <mit-copyright.h>.
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*
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* Lists your current Kerberos tickets.
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* Written by Bill Sommerfeld, MIT Project Athena.
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*/
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#include "kuser_locl.h"
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#if defined(HAVE_SYS_IOCTL_H) && SunOS != 4
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_SYS_IOCCOM_H
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#include <sys/ioccom.h>
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#endif
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#include <kafs.h>
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RCSID("$Id: klist.c,v 1.28 1997/05/26 17:33:50 bg Exp $");
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static int option_verbose = 0;
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static char *
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short_date(int32_t dp)
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{
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char *cp;
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time_t t = (time_t)dp;
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if (t == (time_t)(-1L)) return "*** Never *** ";
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cp = ctime(&t) + 4;
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cp[15] = '\0';
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return (cp);
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}
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static void
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display_tktfile(char *file, int tgt_test, int long_form)
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{
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krb_principal pr;
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char buf1[20], buf2[20];
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int k_errno;
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CREDENTIALS c;
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int header = 1;
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if ((file == NULL) && ((file = getenv("KRBTKFILE")) == NULL))
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file = TKT_FILE;
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if (long_form)
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printf("Ticket file: %s\n", file);
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/*
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* Since krb_get_tf_realm will return a ticket_file error,
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* we will call tf_init and tf_close first to filter out
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* things like no ticket file. Otherwise, the error that
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* the user would see would be
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* klist: can't find realm of ticket file: No ticket file (tf_util)
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* instead of
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* klist: No ticket file (tf_util)
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*/
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/* Open ticket file */
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if ((k_errno = tf_init(file, R_TKT_FIL))) {
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if (!tgt_test)
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warnx("%s", krb_get_err_text(k_errno));
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exit(1);
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}
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/* Close ticket file */
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tf_close();
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/*
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* We must find the realm of the ticket file here before calling
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* tf_init because since the realm of the ticket file is not
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* really stored in the principal section of the file, the
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* routine we use must itself call tf_init and tf_close.
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*/
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if ((k_errno = krb_get_tf_realm(file, pr.realm)) != KSUCCESS) {
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if (!tgt_test)
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warnx("can't find realm of ticket file: %s",
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krb_get_err_text(k_errno));
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exit(1);
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}
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/* Open ticket file */
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if ((k_errno = tf_init(file, R_TKT_FIL))) {
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if (!tgt_test)
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warnx("%s", krb_get_err_text(k_errno));
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exit(1);
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}
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/* Get principal name and instance */
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if ((k_errno = tf_get_pname(pr.name)) ||
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(k_errno = tf_get_pinst(pr.instance))) {
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if (!tgt_test)
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warnx("%s", krb_get_err_text(k_errno));
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exit(1);
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}
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/*
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* You may think that this is the obvious place to get the
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* realm of the ticket file, but it can't be done here as the
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* routine to do this must open the ticket file. This is why
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* it was done before tf_init.
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*/
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if (!tgt_test && long_form)
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printf("Principal:\t%s\n\n", krb_unparse_name(&pr));
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while ((k_errno = tf_get_cred(&c)) == KSUCCESS) {
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if (!tgt_test && long_form && header) {
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printf("%-15s %-15s %s%s\n",
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" Issued", " Expires", " Principal",
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option_verbose ? " (kvno)" : "");
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header = 0;
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}
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if (tgt_test) {
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c.issue_date = krb_life_to_time(c.issue_date, c.lifetime);
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if (!strcmp(c.service, KRB_TICKET_GRANTING_TICKET) &&
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!strcmp(c.instance, pr.realm)) {
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if (time(0) < c.issue_date)
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exit(0); /* tgt hasn't expired */
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else
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exit(1); /* has expired */
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}
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continue; /* not a tgt */
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}
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if (long_form) {
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strcpy(buf1, short_date(c.issue_date));
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c.issue_date = krb_life_to_time(c.issue_date, c.lifetime);
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if (time(0) < (unsigned long) c.issue_date)
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strcpy(buf2, short_date(c.issue_date));
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else
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strcpy(buf2, ">>> Expired <<<");
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printf("%s %s ", buf1, buf2);
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}
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printf("%s", krb_unparse_name_long(c.service, c.instance, c.realm));
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if(long_form && option_verbose)
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printf(" (%d)", c.kvno);
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printf("\n");
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}
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if (tgt_test)
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exit(1); /* no tgt found */
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if (header && long_form && k_errno == EOF) {
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printf("No tickets in file.\n");
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}
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}
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/* adapted from getst() in librkb */
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/*
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* ok_getst() takes a file descriptor, a string and a count. It reads
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* from the file until either it has read "count" characters, or until
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* it reads a null byte. When finished, what has been read exists in
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* the given string "s". If "count" characters were actually read, the
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* last is changed to a null, so the returned string is always null-
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* terminated. ok_getst() returns the number of characters read, including
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* the null terminator.
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*
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* If there is a read error, it returns -1 (like the read(2) system call)
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*/
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static int
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ok_getst(int fd, char *s, int n)
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{
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int count = n;
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int err;
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while ((err = read(fd, s, 1)) > 0 && --count)
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if (*s++ == '\0')
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return (n - count);
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if (err < 0)
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return(-1);
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*s = '\0';
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return (n - count);
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}
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static void
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display_tokens()
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{
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u_int32_t i;
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unsigned char t[128];
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struct ViceIoctl parms;
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struct ClearToken ct;
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int size_secret_tok, size_public_tok;
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parms.in = (void *)&i;
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parms.in_size = sizeof(i);
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parms.out = (void *)t;
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parms.out_size = sizeof(t);
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for (i = 0; k_pioctl(NULL, VIOCGETTOK, &parms, 0) == 0; i++) {
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char *cell;
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memcpy(&size_secret_tok, t, 4);
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memcpy(&size_public_tok, t + 4 + size_secret_tok, 4);
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memcpy(&ct, t + 4 + size_secret_tok + 4, size_public_tok);
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cell = t + 4 + size_secret_tok + 4 + size_public_tok + 4;
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printf("%-15s ", short_date(ct.BeginTimestamp));
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printf("%-15s ", short_date(ct.EndTimestamp));
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if ((ct.EndTimestamp - ct.BeginTimestamp) & 1)
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printf("User's (AFS ID %d) tokens for %s", ct.ViceId, cell);
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else
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printf("Tokens for %s", cell);
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if (option_verbose)
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printf(" (%d)", ct.AuthHandle);
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putchar('\n');
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}
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}
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static void
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display_srvtab(char *file)
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{
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int stab;
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char serv[SNAME_SZ];
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char inst[INST_SZ];
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char rlm[REALM_SZ];
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unsigned char key[8];
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unsigned char vno;
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int count;
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printf("Server key file: %s\n", file);
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if ((stab = open(file, O_RDONLY, 0400)) < 0) {
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perror(file);
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exit(1);
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}
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printf("%-15s %-15s %-10s %s\n","Service","Instance","Realm",
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"Key Version");
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printf("------------------------------------------------------\n");
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/* argh. getst doesn't return error codes, it silently fails */
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while (((count = ok_getst(stab, serv, SNAME_SZ)) > 0)
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&& ((count = ok_getst(stab, inst, INST_SZ)) > 0)
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&& ((count = ok_getst(stab, rlm, REALM_SZ)) > 0)) {
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if (((count = read(stab, &vno,1)) != 1) ||
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((count = read(stab, key,8)) != 8)) {
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if (count < 0)
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err(1, "reading from key file");
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else
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errx(1, "key file truncated");
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}
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printf("%-15s %-15s %-15s %d\n",serv,inst,rlm,vno);
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}
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if (count < 0)
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warn(file);
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close(stab);
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}
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static void
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usage(void)
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{
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fprintf(stderr,
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"Usage: %s [ -v | -s | -t ] [ -f filename ] [-tokens] [-srvtab ]\n",
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__progname);
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exit(1);
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}
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/* ARGSUSED */
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int
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main(int argc, char **argv)
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{
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int long_form = 1;
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int tgt_test = 0;
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int do_srvtab = 0;
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int do_tokens = 0;
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char *tkt_file = NULL;
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set_progname(argv[0]);
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while (*(++argv)) {
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if (!strcmp(*argv, "-v")) {
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option_verbose = 1;
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continue;
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}
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if (!strcmp(*argv, "-s")) {
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long_form = 0;
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continue;
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}
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if (!strcmp(*argv, "-t")) {
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tgt_test = 1;
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long_form = 0;
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continue;
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}
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if (strcmp(*argv, "-tokens") == 0
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|| strcmp(*argv, "-T") == 0) {
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do_tokens = k_hasafs();
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continue;
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}
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if (!strcmp(*argv, "-l")) { /* now default */
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continue;
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}
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if (!strncmp(*argv, "-f", 2)) {
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if (*(++argv)) {
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tkt_file = *argv;
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continue;
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} else
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usage();
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}
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if (!strcmp(*argv, "-srvtab")) {
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if (tkt_file == NULL) /* if no other file spec'ed,
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set file to default srvtab */
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tkt_file = KEYFILE;
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do_srvtab = 1;
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continue;
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}
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usage();
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}
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if (do_srvtab)
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display_srvtab(tkt_file);
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else
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display_tktfile(tkt_file, tgt_test, long_form);
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if (long_form && do_tokens)
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display_tokens();
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exit(0);
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}
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