576 lines
16 KiB
C
576 lines
16 KiB
C
/*
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* Copyright (c) 1999 - 2003 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb5_locl.h"
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#include <getarg.h>
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#include <parse_bytes.h>
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#include <err.h>
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RCSID("$Id: verify_krb5_conf.c,v 1.17.2.1 2003/09/22 18:46:58 lha Exp $");
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/* verify krb5.conf */
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static int dumpconfig_flag = 0;
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static int version_flag = 0;
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static int help_flag = 0;
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static struct getargs args[] = {
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{"dumpconfig", 0, arg_flag, &dumpconfig_flag,
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"show the parsed config files", NULL },
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{"version", 0, arg_flag, &version_flag,
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"print version", NULL },
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{"help", 0, arg_flag, &help_flag,
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NULL, NULL }
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};
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static void
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usage (int ret)
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{
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arg_printusage (args,
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sizeof(args)/sizeof(*args),
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NULL,
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"[config-file]");
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exit (ret);
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}
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static int
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check_bytes(krb5_context context, const char *path, char *data)
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{
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if(parse_bytes(data, NULL) == -1) {
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krb5_warnx(context, "%s: failed to parse \"%s\" as size", path, data);
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return 1;
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}
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return 0;
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}
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static int
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check_time(krb5_context context, const char *path, char *data)
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{
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if(parse_time(data, NULL) == -1) {
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krb5_warnx(context, "%s: failed to parse \"%s\" as time", path, data);
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return 1;
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}
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return 0;
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}
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static int
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check_numeric(krb5_context context, const char *path, char *data)
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{
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long int v;
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char *end;
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v = strtol(data, &end, 0);
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if(*end != '\0') {
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krb5_warnx(context, "%s: failed to parse \"%s\" as a number",
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path, data);
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return 1;
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}
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return 0;
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}
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static int
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check_boolean(krb5_context context, const char *path, char *data)
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{
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long int v;
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char *end;
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if(strcasecmp(data, "yes") == 0 ||
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strcasecmp(data, "true") == 0 ||
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strcasecmp(data, "no") == 0 ||
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strcasecmp(data, "false") == 0)
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return 0;
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v = strtol(data, &end, 0);
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if(*end != '\0') {
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krb5_warnx(context, "%s: failed to parse \"%s\" as a boolean",
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path, data);
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return 1;
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}
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if(v != 0 && v != 1)
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krb5_warnx(context, "%s: numeric value \"%s\" is treated as \"true\"",
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path, data);
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return 0;
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}
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static int
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check_524(krb5_context context, const char *path, char *data)
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{
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if(strcasecmp(data, "yes") == 0 ||
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strcasecmp(data, "no") == 0 ||
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strcasecmp(data, "2b") == 0 ||
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strcasecmp(data, "local") == 0)
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return 0;
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krb5_warnx(context, "%s: didn't contain a valid option `%s'",
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path, data);
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return 1;
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}
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static int
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check_host(krb5_context context, const char *path, char *data)
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{
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int ret;
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char hostname[128];
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const char *p = data;
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struct addrinfo *ai;
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/* XXX data could be a list of hosts that this code can't handle */
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/* XXX copied from krbhst.c */
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if(strncmp(p, "http://", 7) == 0){
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p += 7;
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} else if(strncmp(p, "http/", 5) == 0) {
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p += 5;
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}else if(strncmp(p, "tcp/", 4) == 0){
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p += 4;
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} else if(strncmp(p, "udp/", 4) == 0) {
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p += 4;
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}
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if(strsep_copy(&p, ":", hostname, sizeof(hostname)) < 0) {
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return 1;
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}
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hostname[strcspn(hostname, "/")] = '\0';
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ret = getaddrinfo(hostname, "telnet" /* XXX */, NULL, &ai);
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if(ret != 0) {
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if(ret == EAI_NODATA)
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krb5_warnx(context, "%s: host not found (%s)", path, hostname);
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else
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krb5_warnx(context, "%s: %s (%s)", path, gai_strerror(ret), hostname);
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return 1;
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}
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return 0;
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}
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#if 0
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static int
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mit_entry(krb5_context context, const char *path, char *data)
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{
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krb5_warnx(context, "%s is only used by MIT Kerberos", path);
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return 0;
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}
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#endif
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struct s2i {
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char *s;
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int val;
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};
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#define L(X) { #X, LOG_ ## X }
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static struct s2i syslogvals[] = {
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/* severity */
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L(EMERG),
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L(ALERT),
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L(CRIT),
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L(ERR),
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L(WARNING),
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L(NOTICE),
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L(INFO),
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L(DEBUG),
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/* facility */
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L(AUTH),
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#ifdef LOG_AUTHPRIV
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L(AUTHPRIV),
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#endif
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#ifdef LOG_CRON
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L(CRON),
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#endif
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L(DAEMON),
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#ifdef LOG_FTP
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L(FTP),
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#endif
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L(KERN),
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L(LPR),
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L(MAIL),
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#ifdef LOG_NEWS
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L(NEWS),
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#endif
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L(SYSLOG),
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L(USER),
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#ifdef LOG_UUCP
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L(UUCP),
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#endif
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L(LOCAL0),
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L(LOCAL1),
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L(LOCAL2),
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L(LOCAL3),
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L(LOCAL4),
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L(LOCAL5),
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L(LOCAL6),
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L(LOCAL7),
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{ NULL, -1 }
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};
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static int
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find_value(const char *s, struct s2i *table)
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{
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while(table->s && strcasecmp(table->s, s))
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table++;
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return table->val;
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}
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static int
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check_log(krb5_context context, const char *path, char *data)
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{
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/* XXX sync with log.c */
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int min = 0, max = -1, n;
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char c;
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const char *p = data;
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n = sscanf(p, "%d%c%d/", &min, &c, &max);
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if(n == 2){
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if(c == '/') {
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if(min < 0){
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max = -min;
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min = 0;
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}else{
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max = min;
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}
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}
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}
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if(n){
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p = strchr(p, '/');
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if(p == NULL) {
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krb5_warnx(context, "%s: failed to parse \"%s\"", path, data);
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return 1;
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}
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p++;
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}
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if(strcmp(p, "STDERR") == 0 ||
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strcmp(p, "CONSOLE") == 0 ||
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(strncmp(p, "FILE", 4) == 0 && (p[4] == ':' || p[4] == '=')) ||
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(strncmp(p, "DEVICE", 6) == 0 && p[6] == '='))
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return 0;
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if(strncmp(p, "SYSLOG", 6) == 0){
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int ret = 0;
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char severity[128] = "";
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char facility[128] = "";
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p += 6;
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if(*p != '\0')
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p++;
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if(strsep_copy(&p, ":", severity, sizeof(severity)) != -1)
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strsep_copy(&p, ":", facility, sizeof(facility));
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if(*severity == '\0')
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strlcpy(severity, "ERR", sizeof(severity));
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if(*facility == '\0')
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strlcpy(facility, "AUTH", sizeof(facility));
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if(find_value(severity, syslogvals) == -1) {
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krb5_warnx(context, "%s: unknown syslog facility \"%s\"",
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path, facility);
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ret++;
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}
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if(find_value(severity, syslogvals) == -1) {
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krb5_warnx(context, "%s: unknown syslog severity \"%s\"",
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path, severity);
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ret++;
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}
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return ret;
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}else{
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krb5_warnx(context, "%s: unknown log type: \"%s\"", path, data);
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return 1;
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}
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}
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typedef int (*check_func_t)(krb5_context, const char*, char*);
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struct entry {
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const char *name;
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int type;
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void *check_data;
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};
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struct entry all_strings[] = {
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{ "", krb5_config_string, NULL },
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{ NULL }
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};
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struct entry v4_name_convert_entries[] = {
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{ "host", krb5_config_list, all_strings },
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{ "plain", krb5_config_list, all_strings },
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{ NULL }
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};
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struct entry libdefaults_entries[] = {
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{ "accept_null_addresses", krb5_config_string, check_boolean },
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{ "capath", krb5_config_list, all_strings },
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{ "clockskew", krb5_config_string, check_time },
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{ "date_format", krb5_config_string, NULL },
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{ "default_etypes", krb5_config_string, NULL },
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{ "default_etypes_des", krb5_config_string, NULL },
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{ "default_keytab_modify_name", krb5_config_string, NULL },
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{ "default_keytab_name", krb5_config_string, NULL },
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{ "default_realm", krb5_config_string, NULL },
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{ "dns_proxy", krb5_config_string, NULL },
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{ "dns_lookup_kdc", krb5_config_string, check_boolean },
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{ "dns_lookup_realm", krb5_config_string, check_boolean },
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{ "dns_lookup_realm_labels", krb5_config_string, NULL },
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{ "egd_socket", krb5_config_string, NULL },
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{ "encrypt", krb5_config_string, check_boolean },
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{ "extra_addresses", krb5_config_string, NULL },
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{ "fcache_version", krb5_config_string, check_numeric },
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{ "forward", krb5_config_string, check_boolean },
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{ "forwardable", krb5_config_string, check_boolean },
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{ "http_proxy", krb5_config_string, check_host /* XXX */ },
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{ "ignore_addresses", krb5_config_string, NULL },
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{ "kdc_timeout", krb5_config_string, check_time },
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{ "kdc_timesync", krb5_config_string, check_boolean },
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{ "log_utc", krb5_config_string, check_boolean },
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{ "maxretries", krb5_config_string, check_numeric },
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{ "scan_interfaces", krb5_config_string, check_boolean },
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{ "srv_lookup", krb5_config_string, check_boolean },
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{ "srv_try_txt", krb5_config_string, check_boolean },
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{ "ticket_lifetime", krb5_config_string, check_time },
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{ "time_format", krb5_config_string, NULL },
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{ "transited_realms_reject", krb5_config_string, NULL },
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{ "v4_instance_resolve", krb5_config_string, check_boolean },
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{ "v4_name_convert", krb5_config_list, v4_name_convert_entries },
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{ "verify_ap_req_nofail", krb5_config_string, check_boolean },
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{ NULL }
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};
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struct entry appdefaults_entries[] = {
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{ "afslog", krb5_config_string, check_boolean },
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{ "afs-use-524", krb5_config_string, check_524 },
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{ "forwardable", krb5_config_string, check_boolean },
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{ "proxiable", krb5_config_string, check_boolean },
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{ "ticket_lifetime", krb5_config_string, check_time },
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{ "renew_lifetime", krb5_config_string, check_time },
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{ "no-addresses", krb5_config_string, check_boolean },
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{ "krb4_get_tickets", krb5_config_string, check_boolean },
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#if 0
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{ "anonymous", krb5_config_string, check_boolean },
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#endif
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{ "", krb5_config_list, appdefaults_entries },
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{ NULL }
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};
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struct entry realms_entries[] = {
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{ "forwardable", krb5_config_string, check_boolean },
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{ "proxiable", krb5_config_string, check_boolean },
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{ "ticket_lifetime", krb5_config_string, check_time },
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{ "renew_lifetime", krb5_config_string, check_time },
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{ "warn_pwexpire", krb5_config_string, check_time },
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{ "kdc", krb5_config_string, check_host },
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{ "admin_server", krb5_config_string, check_host },
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{ "kpasswd_server", krb5_config_string, check_host },
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{ "krb524_server", krb5_config_string, check_host },
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{ "v4_name_convert", krb5_config_list, v4_name_convert_entries },
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{ "v4_instance_convert", krb5_config_list, all_strings },
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{ "v4_domains", krb5_config_string, NULL },
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{ "default_domain", krb5_config_string, NULL },
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#if 0
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/* MIT stuff */
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{ "admin_keytab", krb5_config_string, mit_entry },
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{ "acl_file", krb5_config_string, mit_entry },
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{ "dict_file", krb5_config_string, mit_entry },
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{ "kadmind_port", krb5_config_string, mit_entry },
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{ "kpasswd_port", krb5_config_string, mit_entry },
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{ "master_key_name", krb5_config_string, mit_entry },
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{ "master_key_type", krb5_config_string, mit_entry },
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{ "key_stash_file", krb5_config_string, mit_entry },
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{ "max_life", krb5_config_string, mit_entry },
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{ "max_renewable_life", krb5_config_string, mit_entry },
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{ "default_principal_expiration", krb5_config_string, mit_entry },
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{ "default_principal_flags", krb5_config_string, mit_entry },
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{ "supported_enctypes", krb5_config_string, mit_entry },
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{ "database_name", krb5_config_string, mit_entry },
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#endif
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{ NULL }
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};
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struct entry realms_foobar[] = {
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{ "", krb5_config_list, realms_entries },
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{ NULL }
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};
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struct entry kdc_database_entries[] = {
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{ "realm", krb5_config_string, NULL },
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{ "dbname", krb5_config_string, NULL },
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{ "mkey_file", krb5_config_string, NULL },
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{ NULL }
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};
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struct entry kdc_entries[] = {
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{ "database", krb5_config_list, kdc_database_entries },
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{ "key-file", krb5_config_string, NULL },
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{ "logging", krb5_config_string, check_log },
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{ "max-request", krb5_config_string, check_bytes },
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{ "require-preauth", krb5_config_string, check_boolean },
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{ "ports", krb5_config_string, NULL },
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{ "addresses", krb5_config_string, NULL },
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{ "enable-kerberos4", krb5_config_string, check_boolean },
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{ "enable-524", krb5_config_string, check_boolean },
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{ "enable-http", krb5_config_string, check_boolean },
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{ "check_ticket-addresses", krb5_config_string, check_boolean },
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{ "allow-null-addresses", krb5_config_string, check_boolean },
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{ "allow-anonymous", krb5_config_string, check_boolean },
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{ "v4_realm", krb5_config_string, NULL },
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{ "enable-kaserver", krb5_config_string, check_boolean },
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{ "encode_as_rep_as_tgs_rep", krb5_config_string, check_boolean },
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{ "kdc_warn_pwexpire", krb5_config_string, check_time },
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{ NULL }
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};
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struct entry kadmin_entries[] = {
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{ "password_lifetime", krb5_config_string, check_time },
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{ "default_keys", krb5_config_string, NULL },
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{ "use_v4_salt", krb5_config_string, NULL },
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{ NULL }
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};
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struct entry log_strings[] = {
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{ "", krb5_config_string, check_log },
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{ NULL }
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};
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#if 0
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struct entry kdcdefaults_entries[] = {
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{ "kdc_ports", krb5_config_string, mit_entry },
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{ "v4_mode", krb5_config_string, mit_entry },
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{ NULL }
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};
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#endif
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struct entry toplevel_sections[] = {
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{ "libdefaults" , krb5_config_list, libdefaults_entries },
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{ "realms", krb5_config_list, realms_foobar },
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{ "domain_realm", krb5_config_list, all_strings },
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{ "logging", krb5_config_list, log_strings },
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{ "kdc", krb5_config_list, kdc_entries },
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{ "kadmin", krb5_config_list, kadmin_entries },
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{ "appdefaults", krb5_config_list, appdefaults_entries },
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#if 0
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/* MIT stuff */
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{ "kdcdefaults", krb5_config_list, kdcdefaults_entries },
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|
#endif
|
|
{ NULL }
|
|
};
|
|
|
|
|
|
static int
|
|
check_section(krb5_context context, const char *path, krb5_config_section *cf,
|
|
struct entry *entries)
|
|
{
|
|
int error = 0;
|
|
krb5_config_section *p;
|
|
struct entry *e;
|
|
|
|
char *local;
|
|
|
|
for(p = cf; p != NULL; p = p->next) {
|
|
asprintf(&local, "%s/%s", path, p->name);
|
|
for(e = entries; e->name != NULL; e++) {
|
|
if(*e->name == '\0' || strcmp(e->name, p->name) == 0) {
|
|
if(e->type != p->type) {
|
|
krb5_warnx(context, "%s: unknown or wrong type", local);
|
|
error |= 1;
|
|
} else if(p->type == krb5_config_string && e->check_data != NULL) {
|
|
error |= (*(check_func_t)e->check_data)(context, local, p->u.string);
|
|
} else if(p->type == krb5_config_list && e->check_data != NULL) {
|
|
error |= check_section(context, local, p->u.list, e->check_data);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if(e->name == NULL) {
|
|
krb5_warnx(context, "%s: unknown entry", local);
|
|
error |= 1;
|
|
}
|
|
free(local);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
|
|
static void
|
|
dumpconfig(int level, krb5_config_section *top)
|
|
{
|
|
krb5_config_section *x;
|
|
for(x = top; x; x = x->next) {
|
|
switch(x->type) {
|
|
case krb5_config_list:
|
|
if(level == 0) {
|
|
printf("[%s]\n", x->name);
|
|
} else {
|
|
printf("%*s%s = {\n", 4 * level, " ", x->name);
|
|
}
|
|
dumpconfig(level + 1, x->u.list);
|
|
if(level > 0)
|
|
printf("%*s}\n", 4 * level, " ");
|
|
break;
|
|
case krb5_config_string:
|
|
printf("%*s%s = %s\n", 4 * level, " ", x->name, x->u.string);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
krb5_context context;
|
|
krb5_error_code ret;
|
|
krb5_config_section *tmp_cf;
|
|
int optind = 0;
|
|
|
|
setprogname (argv[0]);
|
|
|
|
ret = krb5_init_context(&context);
|
|
if (ret)
|
|
errx (1, "krb5_init_context failed");
|
|
|
|
if(getarg(args, sizeof(args) / sizeof(args[0]), argc, argv, &optind))
|
|
usage(1);
|
|
|
|
if (help_flag)
|
|
usage (0);
|
|
|
|
if(version_flag){
|
|
print_version(NULL);
|
|
exit(0);
|
|
}
|
|
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
tmp_cf = NULL;
|
|
if(argc == 0)
|
|
krb5_get_default_config_files(&argv);
|
|
|
|
while(*argv) {
|
|
ret = krb5_config_parse_file_multi(context, *argv, &tmp_cf);
|
|
if (ret != 0)
|
|
krb5_warn (context, ret, "krb5_config_parse_file");
|
|
argv++;
|
|
}
|
|
|
|
if(dumpconfig_flag)
|
|
dumpconfig(0, tmp_cf);
|
|
|
|
return check_section(context, "", tmp_cf, toplevel_sections);
|
|
}
|