642 lines
15 KiB
C
642 lines
15 KiB
C
/*
|
|
* Copyright (c) 1997 - 2002 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. 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 "kadmin_locl.h"
|
|
#include <parse_units.h>
|
|
|
|
RCSID("$Id: util.c,v 1.39 2003/04/14 11:55:27 lha Exp $");
|
|
|
|
/*
|
|
* util.c - functions for parsing, unparsing, and editing different
|
|
* types of data used in kadmin.
|
|
*/
|
|
|
|
static int
|
|
get_response(const char *prompt, const char *def, char *buf, size_t len);
|
|
|
|
/*
|
|
* attributes
|
|
*/
|
|
|
|
struct units kdb_attrs[] = {
|
|
{ "new-princ", KRB5_KDB_NEW_PRINC },
|
|
{ "support-desmd5", KRB5_KDB_SUPPORT_DESMD5 },
|
|
{ "pwchange-service", KRB5_KDB_PWCHANGE_SERVICE },
|
|
{ "disallow-svr", KRB5_KDB_DISALLOW_SVR },
|
|
{ "requires-pw-change", KRB5_KDB_REQUIRES_PWCHANGE },
|
|
{ "requires-hw-auth", KRB5_KDB_REQUIRES_HW_AUTH },
|
|
{ "requires-pre-auth", KRB5_KDB_REQUIRES_PRE_AUTH },
|
|
{ "disallow-all-tix", KRB5_KDB_DISALLOW_ALL_TIX },
|
|
{ "disallow-dup-skey", KRB5_KDB_DISALLOW_DUP_SKEY },
|
|
{ "disallow-proxiable", KRB5_KDB_DISALLOW_PROXIABLE },
|
|
{ "disallow-renewable", KRB5_KDB_DISALLOW_RENEWABLE },
|
|
{ "disallow-tgt-based", KRB5_KDB_DISALLOW_TGT_BASED },
|
|
{ "disallow-forwardable", KRB5_KDB_DISALLOW_FORWARDABLE },
|
|
{ "disallow-postdated", KRB5_KDB_DISALLOW_POSTDATED },
|
|
{ NULL }
|
|
};
|
|
|
|
/*
|
|
* convert the attributes in `attributes' into a printable string
|
|
* in `str, len'
|
|
*/
|
|
|
|
void
|
|
attributes2str(krb5_flags attributes, char *str, size_t len)
|
|
{
|
|
unparse_flags (attributes, kdb_attrs, str, len);
|
|
}
|
|
|
|
/*
|
|
* convert the string in `str' into attributes in `flags'
|
|
* return 0 if parsed ok, else -1.
|
|
*/
|
|
|
|
int
|
|
str2attributes(const char *str, krb5_flags *flags)
|
|
{
|
|
int res;
|
|
|
|
res = parse_flags (str, kdb_attrs, *flags);
|
|
if (res < 0)
|
|
return res;
|
|
else {
|
|
*flags = res;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* try to parse the string `resp' into attributes in `attr', also
|
|
* setting the `bit' in `mask' if attributes are given and valid.
|
|
*/
|
|
|
|
int
|
|
parse_attributes (const char *resp, krb5_flags *attr, int *mask, int bit)
|
|
{
|
|
krb5_flags tmp = *attr;
|
|
|
|
if (str2attributes(resp, &tmp) == 0) {
|
|
*attr = tmp;
|
|
if (mask)
|
|
*mask |= bit;
|
|
return 0;
|
|
} else if(*resp == '?') {
|
|
print_flags_table (kdb_attrs, stderr);
|
|
} else {
|
|
fprintf (stderr, "Unable to parse '%s'\n", resp);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* allow the user to edit the attributes in `attr', prompting with `prompt'
|
|
*/
|
|
|
|
int
|
|
edit_attributes (const char *prompt, krb5_flags *attr, int *mask, int bit)
|
|
{
|
|
char buf[1024], resp[1024];
|
|
|
|
if (mask && (*mask & bit))
|
|
return 0;
|
|
|
|
attributes2str(*attr, buf, sizeof(buf));
|
|
for (;;) {
|
|
if(get_response("Attributes", buf, resp, sizeof(resp)) != 0)
|
|
return 1;
|
|
if (resp[0] == '\0')
|
|
break;
|
|
if (parse_attributes (resp, attr, mask, bit) == 0)
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* time_t
|
|
* the special value 0 means ``never''
|
|
*/
|
|
|
|
/*
|
|
* Convert the time `t' to a string representation in `str' (of max
|
|
* size `len'). If include_time also include time, otherwise just
|
|
* date.
|
|
*/
|
|
|
|
void
|
|
time_t2str(time_t t, char *str, size_t len, int include_time)
|
|
{
|
|
if(t) {
|
|
if(include_time)
|
|
strftime(str, len, "%Y-%m-%d %H:%M:%S UTC", gmtime(&t));
|
|
else
|
|
strftime(str, len, "%Y-%m-%d", gmtime(&t));
|
|
} else
|
|
snprintf(str, len, "never");
|
|
}
|
|
|
|
/*
|
|
* Convert the time representation in `str' to a time in `time'.
|
|
* Return 0 if succesful, else -1.
|
|
*/
|
|
|
|
int
|
|
str2time_t (const char *str, time_t *t)
|
|
{
|
|
const char *p;
|
|
struct tm tm, tm2;
|
|
|
|
memset (&tm, 0, sizeof (tm));
|
|
|
|
if(strcasecmp(str, "never") == 0) {
|
|
*t = 0;
|
|
return 0;
|
|
}
|
|
|
|
if(strcasecmp(str, "now") == 0) {
|
|
*t = time(NULL);
|
|
return 0;
|
|
}
|
|
|
|
p = strptime (str, "%Y-%m-%d", &tm);
|
|
|
|
if (p == NULL)
|
|
return -1;
|
|
|
|
/* Do it on the end of the day */
|
|
tm2.tm_hour = 23;
|
|
tm2.tm_min = 59;
|
|
tm2.tm_sec = 59;
|
|
|
|
if(strptime (p, "%H:%M:%S", &tm2) != NULL) {
|
|
tm.tm_hour = tm2.tm_hour;
|
|
tm.tm_min = tm2.tm_min;
|
|
tm.tm_sec = tm2.tm_sec;
|
|
}
|
|
|
|
*t = tm2time (tm, 0);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* try to parse the time in `resp' storing it in `value'
|
|
*/
|
|
|
|
int
|
|
parse_timet (const char *resp, krb5_timestamp *value, int *mask, int bit)
|
|
{
|
|
time_t tmp;
|
|
|
|
if (str2time_t(resp, &tmp) == 0) {
|
|
*value = tmp;
|
|
if(mask)
|
|
*mask |= bit;
|
|
return 0;
|
|
} else if(*resp == '?') {
|
|
printf ("Print date on format YYYY-mm-dd [hh:mm:ss]\n");
|
|
} else {
|
|
fprintf (stderr, "Unable to parse time '%s'\n", resp);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* allow the user to edit the time in `value'
|
|
*/
|
|
|
|
int
|
|
edit_timet (const char *prompt, krb5_timestamp *value, int *mask, int bit)
|
|
{
|
|
char buf[1024], resp[1024];
|
|
|
|
if (mask && (*mask & bit))
|
|
return 0;
|
|
|
|
time_t2str (*value, buf, sizeof (buf), 0);
|
|
|
|
for (;;) {
|
|
if(get_response(prompt, buf, resp, sizeof(resp)) != 0)
|
|
return 1;
|
|
if (parse_timet (resp, value, mask, bit) == 0)
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* deltat
|
|
* the special value 0 means ``unlimited''
|
|
*/
|
|
|
|
/*
|
|
* convert the delta_t value in `t' into a printable form in `str, len'
|
|
*/
|
|
|
|
void
|
|
deltat2str(unsigned t, char *str, size_t len)
|
|
{
|
|
if(t == 0 || t == INT_MAX)
|
|
snprintf(str, len, "unlimited");
|
|
else
|
|
unparse_time(t, str, len);
|
|
}
|
|
|
|
/*
|
|
* parse the delta value in `str', storing result in `*delta'
|
|
* return 0 if ok, else -1
|
|
*/
|
|
|
|
int
|
|
str2deltat(const char *str, krb5_deltat *delta)
|
|
{
|
|
int res;
|
|
|
|
if(strcasecmp(str, "unlimited") == 0) {
|
|
*delta = 0;
|
|
return 0;
|
|
}
|
|
res = parse_time(str, "day");
|
|
if (res < 0)
|
|
return res;
|
|
else {
|
|
*delta = res;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* try to parse the string in `resp' into a deltad in `value'
|
|
* `mask' will get the bit `bit' set if a value was given.
|
|
*/
|
|
|
|
int
|
|
parse_deltat (const char *resp, krb5_deltat *value, int *mask, int bit)
|
|
{
|
|
krb5_deltat tmp;
|
|
|
|
if (str2deltat(resp, &tmp) == 0) {
|
|
*value = tmp;
|
|
if (mask)
|
|
*mask |= bit;
|
|
return 0;
|
|
} else if(*resp == '?') {
|
|
print_time_table (stderr);
|
|
} else {
|
|
fprintf (stderr, "Unable to parse time '%s'\n", resp);
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* allow the user to edit the deltat in `value'
|
|
*/
|
|
|
|
int
|
|
edit_deltat (const char *prompt, krb5_deltat *value, int *mask, int bit)
|
|
{
|
|
char buf[1024], resp[1024];
|
|
|
|
if (mask && (*mask & bit))
|
|
return 0;
|
|
|
|
deltat2str(*value, buf, sizeof(buf));
|
|
for (;;) {
|
|
if(get_response(prompt, buf, resp, sizeof(resp)) != 0)
|
|
return 1;
|
|
if (parse_deltat (resp, value, mask, bit) == 0)
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* allow the user to edit `ent'
|
|
*/
|
|
|
|
void
|
|
set_defaults(kadm5_principal_ent_t ent, int *mask,
|
|
kadm5_principal_ent_t default_ent, int default_mask)
|
|
{
|
|
if (default_ent
|
|
&& (default_mask & KADM5_MAX_LIFE)
|
|
&& !(*mask & KADM5_MAX_LIFE))
|
|
ent->max_life = default_ent->max_life;
|
|
|
|
if (default_ent
|
|
&& (default_mask & KADM5_MAX_RLIFE)
|
|
&& !(*mask & KADM5_MAX_RLIFE))
|
|
ent->max_renewable_life = default_ent->max_renewable_life;
|
|
|
|
if (default_ent
|
|
&& (default_mask & KADM5_PRINC_EXPIRE_TIME)
|
|
&& !(*mask & KADM5_PRINC_EXPIRE_TIME))
|
|
ent->princ_expire_time = default_ent->princ_expire_time;
|
|
|
|
if (default_ent
|
|
&& (default_mask & KADM5_PW_EXPIRATION)
|
|
&& !(*mask & KADM5_PW_EXPIRATION))
|
|
ent->pw_expiration = default_ent->pw_expiration;
|
|
|
|
if (default_ent
|
|
&& (default_mask & KADM5_ATTRIBUTES)
|
|
&& !(*mask & KADM5_ATTRIBUTES))
|
|
ent->attributes = default_ent->attributes & ~KRB5_KDB_DISALLOW_ALL_TIX;
|
|
}
|
|
|
|
int
|
|
edit_entry(kadm5_principal_ent_t ent, int *mask,
|
|
kadm5_principal_ent_t default_ent, int default_mask)
|
|
{
|
|
|
|
set_defaults(ent, mask, default_ent, default_mask);
|
|
|
|
if(edit_deltat ("Max ticket life", &ent->max_life, mask,
|
|
KADM5_MAX_LIFE) != 0)
|
|
return 1;
|
|
|
|
if(edit_deltat ("Max renewable life", &ent->max_renewable_life, mask,
|
|
KADM5_MAX_RLIFE) != 0)
|
|
return 1;
|
|
|
|
if(edit_timet ("Principal expiration time", &ent->princ_expire_time, mask,
|
|
KADM5_PRINC_EXPIRE_TIME) != 0)
|
|
return 1;
|
|
|
|
if(edit_timet ("Password expiration time", &ent->pw_expiration, mask,
|
|
KADM5_PW_EXPIRATION) != 0)
|
|
return 1;
|
|
|
|
if(edit_attributes ("Attributes", &ent->attributes, mask,
|
|
KADM5_ATTRIBUTES) != 0)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Parse the arguments, set the fields in `ent' and the `mask' for the
|
|
* entries having been set.
|
|
* Return 1 on failure and 0 on success.
|
|
*/
|
|
|
|
int
|
|
set_entry(krb5_context context,
|
|
kadm5_principal_ent_t ent,
|
|
int *mask,
|
|
const char *max_ticket_life,
|
|
const char *max_renewable_life,
|
|
const char *expiration,
|
|
const char *pw_expiration,
|
|
const char *attributes)
|
|
{
|
|
if (max_ticket_life != NULL) {
|
|
if (parse_deltat (max_ticket_life, &ent->max_life,
|
|
mask, KADM5_MAX_LIFE)) {
|
|
krb5_warnx (context, "unable to parse `%s'", max_ticket_life);
|
|
return 1;
|
|
}
|
|
}
|
|
if (max_renewable_life != NULL) {
|
|
if (parse_deltat (max_renewable_life, &ent->max_renewable_life,
|
|
mask, KADM5_MAX_RLIFE)) {
|
|
krb5_warnx (context, "unable to parse `%s'", max_renewable_life);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
if (expiration) {
|
|
if (parse_timet (expiration, &ent->princ_expire_time,
|
|
mask, KADM5_PRINC_EXPIRE_TIME)) {
|
|
krb5_warnx (context, "unable to parse `%s'", expiration);
|
|
return 1;
|
|
}
|
|
}
|
|
if (pw_expiration) {
|
|
if (parse_timet (pw_expiration, &ent->pw_expiration,
|
|
mask, KADM5_PW_EXPIRATION)) {
|
|
krb5_warnx (context, "unable to parse `%s'", pw_expiration);
|
|
return 1;
|
|
}
|
|
}
|
|
if (attributes != NULL) {
|
|
if (parse_attributes (attributes, &ent->attributes,
|
|
mask, KADM5_ATTRIBUTES)) {
|
|
krb5_warnx (context, "unable to parse `%s'", attributes);
|
|
return 1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Does `string' contain any globing characters?
|
|
*/
|
|
|
|
static int
|
|
is_expression(const char *string)
|
|
{
|
|
const char *p;
|
|
int quote = 0;
|
|
|
|
for(p = string; *p; p++) {
|
|
if(quote) {
|
|
quote = 0;
|
|
continue;
|
|
}
|
|
if(*p == '\\')
|
|
quote++;
|
|
else if(strchr("[]*?", *p) != NULL)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* loop over all principals matching exp */
|
|
int
|
|
foreach_principal(const char *exp,
|
|
int (*func)(krb5_principal, void*),
|
|
const char *funcname,
|
|
void *data)
|
|
{
|
|
char **princs;
|
|
int num_princs;
|
|
int i;
|
|
krb5_error_code ret;
|
|
krb5_principal princ_ent;
|
|
int is_expr;
|
|
|
|
/* if this isn't an expression, there is no point in wading
|
|
through the whole database looking for matches */
|
|
is_expr = is_expression(exp);
|
|
if(is_expr)
|
|
ret = kadm5_get_principals(kadm_handle, exp, &princs, &num_princs);
|
|
if(!is_expr || ret == KADM5_AUTH_LIST) {
|
|
/* we might be able to perform the requested opreration even
|
|
if we're not allowed to list principals */
|
|
num_princs = 1;
|
|
princs = malloc(sizeof(*princs));
|
|
if(princs == NULL)
|
|
return ENOMEM;
|
|
princs[0] = strdup(exp);
|
|
if(princs[0] == NULL){
|
|
free(princs);
|
|
return ENOMEM;
|
|
}
|
|
} else if(ret) {
|
|
krb5_warn(context, ret, "kadm5_get_principals");
|
|
return ret;
|
|
}
|
|
for(i = 0; i < num_princs; i++) {
|
|
ret = krb5_parse_name(context, princs[i], &princ_ent);
|
|
if(ret){
|
|
krb5_warn(context, ret, "krb5_parse_name(%s)", princs[i]);
|
|
continue;
|
|
}
|
|
ret = (*func)(princ_ent, data);
|
|
if(ret)
|
|
krb5_warn(context, ret, "%s %s", funcname, princs[i]);
|
|
krb5_free_principal(context, princ_ent);
|
|
}
|
|
kadm5_free_name_list(kadm_handle, princs, &num_princs);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* prompt with `prompt' and default value `def', and store the reply
|
|
* in `buf, len'
|
|
*/
|
|
|
|
#include <setjmp.h>
|
|
|
|
static jmp_buf jmpbuf;
|
|
|
|
static void
|
|
interrupt(int sig)
|
|
{
|
|
longjmp(jmpbuf, 1);
|
|
}
|
|
|
|
static int
|
|
get_response(const char *prompt, const char *def, char *buf, size_t len)
|
|
{
|
|
char *p;
|
|
void (*osig)(int);
|
|
|
|
osig = signal(SIGINT, interrupt);
|
|
if(setjmp(jmpbuf)) {
|
|
signal(SIGINT, osig);
|
|
printf("\n");
|
|
return 1;
|
|
}
|
|
|
|
printf("%s [%s]:", prompt, def);
|
|
if(fgets(buf, len, stdin) == NULL) {
|
|
int save_errno = errno;
|
|
if(ferror(stdin))
|
|
krb5_err(context, 1, save_errno, "<stdin>");
|
|
signal(SIGINT, osig);
|
|
return 1;
|
|
}
|
|
p = strchr(buf, '\n');
|
|
if(p)
|
|
*p = '\0';
|
|
if(strcmp(buf, "") == 0)
|
|
strlcpy(buf, def, len);
|
|
signal(SIGINT, osig);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* return [0, 16) or -1
|
|
*/
|
|
|
|
static int
|
|
hex2n (char c)
|
|
{
|
|
static char hexdigits[] = "0123456789abcdef";
|
|
const char *p;
|
|
|
|
p = strchr (hexdigits, tolower((unsigned char)c));
|
|
if (p == NULL)
|
|
return -1;
|
|
else
|
|
return p - hexdigits;
|
|
}
|
|
|
|
/*
|
|
* convert a key in a readable format into a keyblock.
|
|
* return 0 iff succesful, otherwise `err' should point to an error message
|
|
*/
|
|
|
|
int
|
|
parse_des_key (const char *key_string, krb5_key_data *key_data,
|
|
const char **err)
|
|
{
|
|
const char *p = key_string;
|
|
unsigned char bits[8];
|
|
int i;
|
|
|
|
if (strlen (key_string) != 16) {
|
|
*err = "bad length, should be 16 for DES key";
|
|
return 1;
|
|
}
|
|
for (i = 0; i < 8; ++i) {
|
|
int d1, d2;
|
|
|
|
d1 = hex2n(p[2 * i]);
|
|
d2 = hex2n(p[2 * i + 1]);
|
|
if (d1 < 0 || d2 < 0) {
|
|
*err = "non-hex character";
|
|
return 1;
|
|
}
|
|
bits[i] = (d1 << 4) | d2;
|
|
}
|
|
for (i = 0; i < 3; ++i) {
|
|
key_data[i].key_data_ver = 2;
|
|
key_data[i].key_data_kvno = 0;
|
|
/* key */
|
|
key_data[i].key_data_type[0] = ETYPE_DES_CBC_CRC;
|
|
key_data[i].key_data_length[0] = 8;
|
|
key_data[i].key_data_contents[0] = malloc(8);
|
|
memcpy (key_data[i].key_data_contents[0], bits, 8);
|
|
/* salt */
|
|
key_data[i].key_data_type[1] = KRB5_PW_SALT;
|
|
key_data[i].key_data_length[1] = 0;
|
|
key_data[i].key_data_contents[1] = NULL;
|
|
}
|
|
key_data[0].key_data_type[0] = ETYPE_DES_CBC_MD5;
|
|
key_data[1].key_data_type[0] = ETYPE_DES_CBC_MD4;
|
|
return 0;
|
|
}
|