diff options
Diffstat (limited to 'eBones/klist/klist.c')
| -rw-r--r-- | eBones/klist/klist.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/eBones/klist/klist.c b/eBones/klist/klist.c new file mode 100644 index 0000000..4a95bc0 --- /dev/null +++ b/eBones/klist/klist.c @@ -0,0 +1,275 @@ +/* + * Copyright 1987, 1988 by the Massachusetts Institute of Technology. + * For copying and distribution information, please see the file + * <Copyright.MIT>. + * + * Lists your current Kerberos tickets. + * Written by Bill Sommerfeld, MIT Project Athena. + * + * from: klist.c,v 4.15 89/08/30 11:19:16 jtkohl Exp $ + * $Id: klist.c,v 1.2 1994/07/19 19:24:38 g89r4222 Exp $ + */ + +#ifndef lint +static char rcsid[] = +"$Id: klist.c,v 1.2 1994/07/19 19:24:38 g89r4222 Exp $"; +#endif lint + +#include <stdio.h> +#include <strings.h> +#include <sys/file.h> +#include <krb.h> +#include <prot.h> + +char *tkt_string(); +char *short_date(); +char *whoami; /* What was I invoked as?? */ +char *getenv(); + +extern char *krb_err_txt[]; + +/* ARGSUSED */ +main(argc, argv) + int argc; + char **argv; +{ + int long_form = 1; + int tgt_test = 0; + int do_srvtab = 0; + char *tkt_file = NULL; + char *cp; + + whoami = (cp = rindex(*argv, '/')) ? cp + 1 : *argv; + + while (*(++argv)) { + if (!strcmp(*argv, "-s")) { + long_form = 0; + continue; + } + if (!strcmp(*argv, "-t")) { + tgt_test = 1; + long_form = 0; + continue; + } + if (!strcmp(*argv, "-l")) { /* now default */ + continue; + } + if (!strcmp(*argv, "-file")) { + if (*(++argv)) { + tkt_file = *argv; + continue; + } else + usage(); + } + if (!strcmp(*argv, "-srvtab")) { + if (tkt_file == NULL) /* if no other file spec'ed, + set file to default srvtab */ + tkt_file = KEYFILE; + do_srvtab = 1; + continue; + } + usage(); + } + + if (do_srvtab) + display_srvtab(tkt_file); + else + display_tktfile(tkt_file, tgt_test, long_form); + exit(0); +} + + +display_tktfile(file, tgt_test, long_form) +char *file; +int tgt_test, long_form; +{ + char pname[ANAME_SZ]; + char pinst[INST_SZ]; + char prealm[REALM_SZ]; + char buf1[20], buf2[20]; + int k_errno; + CREDENTIALS c; + int header = 1; + + if ((file == NULL) && ((file = getenv("KRBTKFILE")) == NULL)) + file = TKT_FILE; + + if (long_form) + printf("Ticket file: %s\n", file); + + /* + * Since krb_get_tf_realm will return a ticket_file error, + * we will call tf_init and tf_close first to filter out + * things like no ticket file. Otherwise, the error that + * the user would see would be + * klist: can't find realm of ticket file: No ticket file (tf_util) + * instead of + * klist: No ticket file (tf_util) + */ + + /* Open ticket file */ + if (k_errno = tf_init(file, R_TKT_FIL)) { + if (!tgt_test) + fprintf(stderr, "%s: %s\n", whoami, krb_err_txt[k_errno]); + exit(1); + } + /* Close ticket file */ + (void) tf_close(); + + /* + * We must find the realm of the ticket file here before calling + * tf_init because since the realm of the ticket file is not + * really stored in the principal section of the file, the + * routine we use must itself call tf_init and tf_close. + */ + if ((k_errno = krb_get_tf_realm(file, prealm)) != KSUCCESS) { + if (!tgt_test) + fprintf(stderr, "%s: can't find realm of ticket file: %s\n", + whoami, krb_err_txt[k_errno]); + exit(1); + } + + /* Open ticket file */ + if (k_errno = tf_init(file, R_TKT_FIL)) { + if (!tgt_test) + fprintf(stderr, "%s: %s\n", whoami, krb_err_txt[k_errno]); + exit(1); + } + /* Get principal name and instance */ + if ((k_errno = tf_get_pname(pname)) || + (k_errno = tf_get_pinst(pinst))) { + if (!tgt_test) + fprintf(stderr, "%s: %s\n", whoami, krb_err_txt[k_errno]); + exit(1); + } + + /* + * You may think that this is the obvious place to get the + * realm of the ticket file, but it can't be done here as the + * routine to do this must open the ticket file. This is why + * it was done before tf_init. + */ + + if (!tgt_test && long_form) + printf("Principal:\t%s%s%s%s%s\n\n", pname, + (pinst[0] ? "." : ""), pinst, + (prealm[0] ? "@" : ""), prealm); + while ((k_errno = tf_get_cred(&c)) == KSUCCESS) { + if (!tgt_test && long_form && header) { + printf("%-15s %-15s %s\n", + " Issued", " Expires", " Principal"); + header = 0; + } + if (tgt_test) { + c.issue_date += ((unsigned char) c.lifetime) * 5 * 60; + if (!strcmp(c.service, TICKET_GRANTING_TICKET) && + !strcmp(c.instance, prealm)) { + if (time(0) < c.issue_date) + exit(0); /* tgt hasn't expired */ + else + exit(1); /* has expired */ + } + continue; /* not a tgt */ + } + if (long_form) { + (void) strcpy(buf1, short_date(&c.issue_date)); + c.issue_date += ((unsigned char) c.lifetime) * 5 * 60; + (void) strcpy(buf2, short_date(&c.issue_date)); + printf("%s %s ", buf1, buf2); + } + printf("%s%s%s%s%s\n", + c.service, (c.instance[0] ? "." : ""), c.instance, + (c.realm[0] ? "@" : ""), c.realm); + } + if (tgt_test) + exit(1); /* no tgt found */ + if (header && long_form && k_errno == EOF) { + printf("No tickets in file.\n"); + } +} + +char * +short_date(dp) + long *dp; +{ + register char *cp; + extern char *ctime(); + cp = ctime(dp) + 4; + cp[15] = '\0'; + return (cp); +} + +usage() +{ + fprintf(stderr, + "Usage: %s [ -s | -t ] [ -file filename ] [ -srvtab ]\n", whoami); + exit(1); +} + +display_srvtab(file) +char *file; +{ + int stab; + char serv[SNAME_SZ]; + char inst[INST_SZ]; + char rlm[REALM_SZ]; + unsigned char key[8]; + unsigned char vno; + int count; + + printf("Server key file: %s\n", file); + + if ((stab = open(file, O_RDONLY, 0400)) < 0) { + perror(file); + exit(1); + } + printf("%-15s %-15s %-10s %s\n","Service","Instance","Realm", + "Key Version"); + printf("------------------------------------------------------\n"); + + /* argh. getst doesn't return error codes, it silently fails */ + while (((count = ok_getst(stab, serv, SNAME_SZ)) > 0) + && ((count = ok_getst(stab, inst, INST_SZ)) > 0) + && ((count = ok_getst(stab, rlm, REALM_SZ)) > 0)) { + if (((count = read(stab,(char *) &vno,1)) != 1) || + ((count = read(stab,(char *) key,8)) != 8)) { + if (count < 0) + perror("reading from key file"); + else + fprintf(stderr, "key file truncated\n"); + exit(1); + } + printf("%-15s %-15s %-15s %d\n",serv,inst,rlm,vno); + } + if (count < 0) + perror(file); + (void) close(stab); +} + +/* adapted from getst() in librkb */ +/* + * ok_getst() takes a file descriptor, a string and a count. It reads + * from the file until either it has read "count" characters, or until + * it reads a null byte. When finished, what has been read exists in + * the given string "s". If "count" characters were actually read, the + * last is changed to a null, so the returned string is always null- + * terminated. ok_getst() returns the number of characters read, including + * the null terminator. + * + * If there is a read error, it returns -1 (like the read(2) system call) + */ + +ok_getst(fd, s, n) + int fd; + register char *s; +{ + register count = n; + int err; + while ((err = read(fd, s, 1)) > 0 && --count) + if (*s++ == '\0') + return (n - count); + if (err < 0) + return(-1); + *s = '\0'; + return (n - count); +} |
