diff options
Diffstat (limited to 'crypto/kerberosIV/lib/krb/get_krbrlm.c')
| -rw-r--r-- | crypto/kerberosIV/lib/krb/get_krbrlm.c | 182 |
1 files changed, 104 insertions, 78 deletions
diff --git a/crypto/kerberosIV/lib/krb/get_krbrlm.c b/crypto/kerberosIV/lib/krb/get_krbrlm.c index 8c5b0c9..9c675f6 100644 --- a/crypto/kerberosIV/lib/krb/get_krbrlm.c +++ b/crypto/kerberosIV/lib/krb/get_krbrlm.c @@ -1,27 +1,44 @@ -/* - Copyright (C) 1989 by the Massachusetts Institute of Technology - - Export of this software from the United States of America is assumed - to require a specific license from the United States Government. - It is the responsibility of any person or organization contemplating - export to obtain such a license before exporting. - -WITHIN THAT CONSTRAINT, permission to use, copy, modify, and -distribute this software and its documentation for any purpose and -without fee is hereby granted, provided that the above copyright -notice appear in all copies and that both that copyright notice and -this permission notice appear in supporting documentation, and that -the name of M.I.T. not be used in advertising or publicity pertaining -to distribution of the software without specific, written prior -permission. M.I.T. makes no representations about the suitability of -this software for any purpose. It is provided "as is" without express -or implied warranty. - - */ +/* + * Copyright (c) 1995, 1996, 1997, 1998 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Kungliga Tekniska + * Högskolan and its contributors. + * + * 4. 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 "krb_locl.h" -RCSID("$Id: get_krbrlm.c,v 1.16 1997/05/02 01:26:22 assar Exp $"); +RCSID("$Id: get_krbrlm.c,v 1.22.2.1 1999/09/02 08:51:04 joda Exp $"); /* * krb_get_lrealm takes a pointer to a string, and a number, n. It fills @@ -31,9 +48,6 @@ RCSID("$Id: get_krbrlm.c,v 1.16 1997/05/02 01:26:22 assar Exp $"); * config file does not exist, and if n=1, a successful return will occur * with r = KRB_REALM (also defined in "krb.h"). * - * NOTE: for archaic & compatibility reasons, this routine will only return - * valid results when n = 1. - * * For the format of the KRB_CONF file, see comments describing the routine * krb_get_krbhst(). */ @@ -41,76 +55,88 @@ RCSID("$Id: get_krbrlm.c,v 1.16 1997/05/02 01:26:22 assar Exp $"); static int krb_get_lrealm_f(char *r, int n, const char *fname) { + char buf[1024]; + char *p; + int nchar; FILE *f; int ret = KFAILURE; + + if (n < 0) + return KFAILURE; + if(n == 0) + n = 1; + f = fopen(fname, "r"); - if(f){ - char buf[REALM_SZ]; - if(fgets(buf, sizeof(buf), f)){ - char *p = buf + strspn(buf, " \t"); - p[strcspn(p, " \t\r\n")] = 0; - p[REALM_SZ - 1] = 0; - strcpy(r, p); - ret = KSUCCESS; - } - fclose(f); - } + if (f == 0) + return KFAILURE; + + for (; n > 0; n--) + if (fgets(buf, sizeof(buf), f) == 0) + goto done; + + /* We now have the n:th line, remove initial white space. */ + p = buf + strspn(buf, " \t"); + + /* Collect realmname. */ + nchar = strcspn(p, " \t\n"); + if (nchar == 0 || nchar > REALM_SZ) + goto done; /* No realmname */ + strncpy(r, p, nchar); + r[nchar] = 0; + + /* Does more junk follow? */ + p += nchar; + nchar = strspn(p, " \t\n"); + if (p[nchar] == 0) + ret = KSUCCESS; /* This was a realm name only line. */ + + done: + fclose(f); return ret; } +static const char *no_default_realm = "NO.DEFAULT.REALM"; + int krb_get_lrealm(char *r, int n) { - static const char *const files[] = KRB_CNF_FILES; - int i; - - const char *dir = getenv("KRBCONFDIR"); - - if (n > 1) - return(KFAILURE); /* Temporary restriction */ - - /* First try user specified file */ - if (dir != 0) { - char fname[MaxPathLen]; - if(k_concat(fname, sizeof(fname), dir, "/krb.conf", NULL) == 0) - if (krb_get_lrealm_f(r, n, fname) == KSUCCESS) + int i; + char file[MaxPathLen]; + + for (i = 0; krb_get_krbconf(i, file, sizeof(file)) == 0; i++) + if (krb_get_lrealm_f(r, n, file) == KSUCCESS) return KSUCCESS; - } - for (i = 0; files[i] != 0; i++) - if (krb_get_lrealm_f(r, n, files[i]) == KSUCCESS) - return KSUCCESS; + /* When nothing else works try default realm */ + if (n == 1) { + char *t = krb_get_default_realm(); + + if (strcmp(t, no_default_realm) == 0) + return KFAILURE; /* Can't figure out default realm */ - /* If nothing else works try LOCALDOMAIN, if it exists */ - if (n == 1) - { - char *t, hostname[MaxHostNameLen]; - k_gethostname(hostname, sizeof(hostname)); - t = krb_realmofhost(hostname); - if (t) { - strcpy (r, t); - return KSUCCESS; - } - t = strchr(hostname, '.'); - if (t == 0) - return KFAILURE; /* No domain part, you loose */ - - t++; /* Skip leading dot and upcase the rest */ - for (; *t; t++, r++) - *r = toupper(*t); - *r = 0; - return(KSUCCESS); + strcpy(r, t); + return KSUCCESS; } - else - return(KFAILURE); + else + return(KFAILURE); } -/* For SunOS5 compat. */ +/* Returns local realm if that can be figured out else NO.DEFAULT.REALM */ char * krb_get_default_realm(void) { - static char local_realm[REALM_SZ]; /* local kerberos realm */ - if (krb_get_lrealm(local_realm, 1) != KSUCCESS) - strcpy(local_realm, "NO.DEFAULT.REALM"); - return local_realm; + static char local_realm[REALM_SZ]; /* Local kerberos realm */ + + if (local_realm[0] == 0) { + char *t, hostname[MaxHostNameLen]; + + strcpy_truncate(local_realm, no_default_realm, + sizeof(local_realm)); /* Provide default */ + + gethostname(hostname, sizeof(hostname)); + t = krb_realmofhost(hostname); + if (t && strcmp(t, no_default_realm) != 0) + strcpy_truncate(local_realm, t, sizeof(local_realm)); + } + return local_realm; } |
