mirror/openldap
2
0
Fork 0
mirror of https://git.openldap.org/openldap/openldap.git synced 2024-12-15 03:01:09 +08:00
Code Issues Packages Projects Releases Wiki Activity
e5bd309fb2
openldap/servers/slapd/aclparse.c
Quanah Gibson-Mount efaf9a4a17 Happy New Year!
2021-01-11 19:25:53 +00:00

2816 lines
70 KiB
C
Raw Blame History

/* aclparse.c - routines to parse and check acl's */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1998-2021 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
/* Portions Copyright (c) 1995 Regents of the University of Michigan.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and that due credit is given
* to the University of Michigan at Ann Arbor. The name of the University
* may not be used to endorse or promote products derived from this
* software without specific prior written permission. This software
* is provided ``as is'' without express or implied warranty.
*/
#include "portable.h"
#include <stdio.h>
#include <ac/ctype.h>
#include <ac/regex.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/unistd.h>
#include "slap.h"
#include "lber_pvt.h"
#include "lutil.h"
static const char style_base[] = "base";
const char *style_strings[] = {
"regex",
"expand",
"exact",
"one",
"subtree",
"children",
"level",
"attrof",
"anonymous",
"users",
"self",
"ip",
"ipv6",
"path",
NULL
};
#define ACLBUF_CHUNKSIZE 8192
static struct berval aclbuf;
static void split(char *line, int splitchar, char **left, char **right);
static void access_append(Access **l, Access *a);
static void access_free( Access *a );
static int acl_usage(void);
static void acl_regex_normalized_dn(const char *src, struct berval *pat);
#ifdef LDAP_DEBUG
static void print_acl(Backend *be, AccessControl *a);
#endif
static int check_scope( BackendDB *be, AccessControl *a );
#ifdef SLAP_DYNACL
static int
slap_dynacl_config(
const char *fname,
int lineno,
Access *b,
const char *name,
const char *opts,
slap_style_t sty,
const char *right )
{
slap_dynacl_t *da, *tmp;
int rc = 0;
for ( da = b->a_dynacl; da; da = da->da_next ) {
if ( strcasecmp( da->da_name, name ) == 0 ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: dynacl \"%s\" already specified.\n",
fname, lineno, name );
return acl_usage();
}
}
da = slap_dynacl_get( name );
if ( da == NULL ) {
return -1;
}
tmp = ch_malloc( sizeof( slap_dynacl_t ) );
*tmp = *da;
if ( tmp->da_parse ) {
rc = ( *tmp->da_parse )( fname, lineno, opts, sty, right, &tmp->da_private );
if ( rc ) {
ch_free( tmp );
return rc;
}
}
tmp->da_next = b->a_dynacl;
b->a_dynacl = tmp;
return 0;
}
#endif /* SLAP_DYNACL */
static void
regtest(const char *fname, int lineno, char *pat) {
int e;
regex_t re;
char buf[ SLAP_TEXT_BUFLEN ];
unsigned size;
char *sp;
char *dp;
int flag;
sp = pat;
dp = buf;
size = 0;
buf[0] = '\0';
for (size = 0, flag = 0; (size < sizeof(buf)) && *sp; sp++) {
if (flag) {
if (*sp == '$'|| (*sp >= '0' && *sp <= '9')) {
*dp++ = *sp;
size++;
}
flag = 0;
} else {
if (*sp == '$') {
flag = 1;
} else {
*dp++ = *sp;
size++;
}
}
}
*dp = '\0';
if ( size >= (sizeof(buf) - 1) ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: regular expression \"%s\" too large\n",
fname, lineno, pat );
(void)acl_usage();
exit( EXIT_FAILURE );
}
if ((e = regcomp(&re, buf, REG_EXTENDED|REG_ICASE))) {
char error[ SLAP_TEXT_BUFLEN ];
regerror(e, &re, error, sizeof(error));
Debug(LDAP_DEBUG_ANY,
"%s: line %d: regular expression \"%s\" bad because of %s\n",
fname, lineno, pat, error );
acl_usage();
exit( EXIT_FAILURE );
}
regfree(&re);
}
/*
* Experimental
*
* Check if the pattern of an ACL, if any, matches the scope
* of the backend it is defined within.
*/
#define ACL_SCOPE_UNKNOWN (-2)
#define ACL_SCOPE_ERR (-1)
#define ACL_SCOPE_OK (0)
#define ACL_SCOPE_PARTIAL (1)
#define ACL_SCOPE_WARN (2)
static int
check_scope( BackendDB *be, AccessControl *a )
{
ber_len_t patlen;
struct berval dn;
dn = be->be_nsuffix[0];
if ( BER_BVISEMPTY( &dn ) ) {
return ACL_SCOPE_OK;
}
if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
a->acl_dn_style != ACL_STYLE_REGEX )
{
slap_style_t style = a->acl_dn_style;
if ( style == ACL_STYLE_REGEX ) {
char dnbuf[SLAP_LDAPDN_MAXLEN + 2];
char rebuf[SLAP_LDAPDN_MAXLEN + 1];
ber_len_t rebuflen;
regex_t re;
int rc;
/* add trailing '$' to database suffix to form
* a simple trial regex pattern "<suffix>$" */
AC_MEMCPY( dnbuf, be->be_nsuffix[0].bv_val,
be->be_nsuffix[0].bv_len );
dnbuf[be->be_nsuffix[0].bv_len] = '$';
dnbuf[be->be_nsuffix[0].bv_len + 1] = '\0';
if ( regcomp( &re, dnbuf, REG_EXTENDED|REG_ICASE ) ) {
return ACL_SCOPE_WARN;
}
/* remove trailing ')$', if any, from original
* regex pattern */
rebuflen = a->acl_dn_pat.bv_len;
AC_MEMCPY( rebuf, a->acl_dn_pat.bv_val, rebuflen + 1 );
if ( rebuf[rebuflen - 1] == '$' ) {
rebuf[--rebuflen] = '\0';
}
while ( rebuflen > be->be_nsuffix[0].bv_len && rebuf[rebuflen - 1] == ')' ) {
rebuf[--rebuflen] = '\0';
}
if ( rebuflen == be->be_nsuffix[0].bv_len ) {
rc = ACL_SCOPE_WARN;
goto regex_done;
}
/* not a clear indication of scoping error, though */
rc = regexec( &re, rebuf, 0, NULL, 0 )
? ACL_SCOPE_WARN : ACL_SCOPE_OK;
regex_done:;
regfree( &re );
return rc;
}
patlen = a->acl_dn_pat.bv_len;
/* If backend suffix is longer than pattern,
* it is a potential mismatch (in the sense
* that a superior naming context could
* match */
if ( dn.bv_len > patlen ) {
/* base is blatantly wrong */
if ( style == ACL_STYLE_BASE ) return ACL_SCOPE_ERR;
/* a style of one can be wrong if there is
* more than one level between the suffix
* and the pattern */
if ( style == ACL_STYLE_ONE ) {
ber_len_t rdnlen = 0;
int sep = 0;
if ( patlen > 0 ) {
if ( !DN_SEPARATOR( dn.bv_val[dn.bv_len - patlen - 1] )) {
return ACL_SCOPE_ERR;
}
sep = 1;
}
rdnlen = dn_rdnlen( NULL, &dn );
if ( rdnlen != dn.bv_len - patlen - sep )
return ACL_SCOPE_ERR;
}
/* if the trailing part doesn't match,
* then it's an error */
if ( strcmp( a->acl_dn_pat.bv_val,
&dn.bv_val[dn.bv_len - patlen] ) != 0 )
{
return ACL_SCOPE_ERR;
}
return ACL_SCOPE_PARTIAL;
}
switch ( style ) {
case ACL_STYLE_BASE:
case ACL_STYLE_ONE:
case ACL_STYLE_CHILDREN:
case ACL_STYLE_SUBTREE:
break;
default:
assert( 0 );
break;
}
if ( dn.bv_len < patlen &&
!DN_SEPARATOR( a->acl_dn_pat.bv_val[patlen - dn.bv_len - 1] ))
{
return ACL_SCOPE_ERR;
}
if ( strcmp( &a->acl_dn_pat.bv_val[patlen - dn.bv_len], dn.bv_val )
!= 0 )
{
return ACL_SCOPE_ERR;
}
return ACL_SCOPE_OK;
}
return ACL_SCOPE_UNKNOWN;
}
int
parse_acl(
Backend *be,
const char *fname,
int lineno,
int argc,
char **argv,
int pos )
{
int i;
char *left, *right, *style;
struct berval bv;
AccessControl *a = NULL;
Access *b = NULL;
int rc;
const char *text;
for ( i = 1; i < argc; i++ ) {
/* to clause - select which entries are protected */
if ( strcasecmp( argv[i], "to" ) == 0 ) {
if ( a != NULL ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"only one to clause allowed in access line\n",
fname, lineno );
goto fail;
}
a = (AccessControl *) ch_calloc( 1, sizeof(AccessControl) );
a->acl_attrval_style = ACL_STYLE_NONE;
for ( ++i; i < argc; i++ ) {
if ( strcasecmp( argv[i], "by" ) == 0 ) {
i--;
break;
}
if ( strcasecmp( argv[i], "*" ) == 0 ) {
if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
a->acl_dn_style != ACL_STYLE_REGEX )
{
Debug( LDAP_DEBUG_ANY,
"%s: line %d: dn pattern"
" already specified in to clause.\n",
fname, lineno );
goto fail;
}
ber_str2bv( "*", STRLENOF( "*" ), 1, &a->acl_dn_pat );
continue;
}
split( argv[i], '=', &left, &right );
split( left, '.', &left, &style );
if ( right == NULL ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing \"=\" in \"%s\" in to clause\n",
fname, lineno, left );
goto fail;
}
if ( strcasecmp( left, "dn" ) == 0 ) {
if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
a->acl_dn_style != ACL_STYLE_REGEX )
{
Debug( LDAP_DEBUG_ANY,
"%s: line %d: dn pattern"
" already specified in to clause.\n",
fname, lineno );
goto fail;
}
if ( style == NULL || *style == '\0' ||
strcasecmp( style, "baseObject" ) == 0 ||
strcasecmp( style, "base" ) == 0 ||
strcasecmp( style, "exact" ) == 0 )
{
a->acl_dn_style = ACL_STYLE_BASE;
ber_str2bv( right, 0, 1, &a->acl_dn_pat );
} else if ( strcasecmp( style, "oneLevel" ) == 0 ||
strcasecmp( style, "one" ) == 0 )
{
a->acl_dn_style = ACL_STYLE_ONE;
ber_str2bv( right, 0, 1, &a->acl_dn_pat );
} else if ( strcasecmp( style, "subtree" ) == 0 ||
strcasecmp( style, "sub" ) == 0 )
{
if( *right == '\0' ) {
ber_str2bv( "*", STRLENOF( "*" ), 1, &a->acl_dn_pat );
} else {
a->acl_dn_style = ACL_STYLE_SUBTREE;
ber_str2bv( right, 0, 1, &a->acl_dn_pat );
}
} else if ( strcasecmp( style, "children" ) == 0 ) {
a->acl_dn_style = ACL_STYLE_CHILDREN;
ber_str2bv( right, 0, 1, &a->acl_dn_pat );
} else if ( strcasecmp( style, "regex" ) == 0 ) {
a->acl_dn_style = ACL_STYLE_REGEX;
if ( *right == '\0' ) {
/* empty regex should match empty DN */
a->acl_dn_style = ACL_STYLE_BASE;
ber_str2bv( right, 0, 1, &a->acl_dn_pat );
} else if ( strcmp(right, "*") == 0
|| strcmp(right, ".*") == 0
|| strcmp(right, ".*$") == 0
|| strcmp(right, "^.*") == 0
|| strcmp(right, "^.*$") == 0
|| strcmp(right, ".*$$") == 0
|| strcmp(right, "^.*$$") == 0 )
{
ber_str2bv( "*", STRLENOF("*"), 1, &a->acl_dn_pat );
} else {
acl_regex_normalized_dn( right, &a->acl_dn_pat );
}
} else {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"unknown dn style \"%s\" in to clause\n",
fname, lineno, style );
goto fail;
}
continue;
}
if ( strcasecmp( left, "filter" ) == 0 ) {
if ( (a->acl_filter = str2filter( right )) == NULL ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: bad filter \"%s\" in to clause\n",
fname, lineno, right );
goto fail;
}
} else if ( strcasecmp( left, "attr" ) == 0 /* TOLERATED */
|| strcasecmp( left, "attrs" ) == 0 ) /* DOCUMENTED */
{
if ( strcasecmp( left, "attr" ) == 0 ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: \"attr\" "
"is deprecated (and undocumented); "
"use \"attrs\" instead.\n",
fname, lineno );
}
a->acl_attrs = str2anlist( a->acl_attrs,
right, "," );
if ( a->acl_attrs == NULL ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: unknown attr \"%s\" in to clause\n",
fname, lineno, right );
goto fail;
}
} else if ( strncasecmp( left, "val", 3 ) == 0 ) {
struct berval bv;
char *mr;
if ( !BER_BVISEMPTY( &a->acl_attrval ) ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: attr val already specified in to clause.\n",
fname, lineno );
goto fail;
}
if ( a->acl_attrs == NULL || !BER_BVISEMPTY( &a->acl_attrs[1].an_name ) )
{
Debug( LDAP_DEBUG_ANY,
"%s: line %d: attr val requires a single attribute.\n",
fname, lineno );
goto fail;
}
ber_str2bv( right, 0, 0, &bv );
a->acl_attrval_style = ACL_STYLE_BASE;
mr = strchr( left, '/' );
if ( mr != NULL ) {
mr[ 0 ] = '\0';
mr++;
a->acl_attrval_mr = mr_find( mr );
if ( a->acl_attrval_mr == NULL ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"invalid matching rule \"%s\".\n",
fname, lineno, mr );
goto fail;
}
if( !mr_usable_with_at( a->acl_attrval_mr, a->acl_attrs[ 0 ].an_desc->ad_type ) )
{
Debug(LDAP_DEBUG_ANY,
"%s: line %d: matching rule \"%s\" use " "with attr \"%s\" not appropriate.\n",
fname, lineno,
mr,
a->acl_attrs[0].an_name.bv_val );
goto fail;
}
}
if ( style != NULL ) {
if ( strcasecmp( style, "regex" ) == 0 ) {
int e = regcomp( &a->acl_attrval_re, bv.bv_val,
REG_EXTENDED | REG_ICASE );
if ( e ) {
char err[SLAP_TEXT_BUFLEN];
regerror( e, &a->acl_attrval_re, err, sizeof( err ) );
Debug(LDAP_DEBUG_ANY,
"%s: line %d: regular expression \"%s\" bad because of %s\n",
fname, lineno, right, err );
goto fail;
}
a->acl_attrval_style = ACL_STYLE_REGEX;
} else {
/* FIXME: if the attribute has DN syntax, we might
* allow one, subtree and children styles as well */
if ( !strcasecmp( style, "base" ) ||
!strcasecmp( style, "exact" ) ) {
a->acl_attrval_style = ACL_STYLE_BASE;
} else if ( a->acl_attrs[0].an_desc->ad_type->
sat_syntax == slap_schema.si_syn_distinguishedName )
{
if ( !strcasecmp( style, "baseObject" ) ||
!strcasecmp( style, "base" ) )
{
a->acl_attrval_style = ACL_STYLE_BASE;
} else if ( !strcasecmp( style, "onelevel" ) ||
!strcasecmp( style, "one" ) )
{
a->acl_attrval_style = ACL_STYLE_ONE;
} else if ( !strcasecmp( style, "subtree" ) ||
!strcasecmp( style, "sub" ) )
{
a->acl_attrval_style = ACL_STYLE_SUBTREE;
} else if ( !strcasecmp( style, "children" ) ) {
a->acl_attrval_style = ACL_STYLE_CHILDREN;
} else {
Debug(LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
"%s: line %d: unknown val.<style> \"%s\" for attributeType \"%s\" " "with DN syntax.\n",
fname,
lineno,
style,
a->acl_attrs[0].an_desc->ad_cname.bv_val );
goto fail;
}
rc = dnNormalize( 0, NULL, NULL, &bv, &a->acl_attrval, NULL );
if ( rc != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ANY,
"%s: line %d: unable to normalize DN \"%s\" " "for attributeType \"%s\" (%d).\n",
fname,
lineno,
bv.bv_val,
a->acl_attrs[0].an_desc->ad_cname.bv_val,
rc );
goto fail;
}
} else {
Debug(LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
"%s: line %d: unknown val.<style> \"%s\" for attributeType \"%s\".\n",
fname,
lineno,
style,
a->acl_attrs[0].an_desc->ad_cname.bv_val );
goto fail;
}
}
}
/* Check for appropriate matching rule */
if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
ber_dupbv( &a->acl_attrval, &bv );
} else if ( BER_BVISNULL( &a->acl_attrval ) ) {
int rc;
const char *text;
if ( a->acl_attrval_mr == NULL ) {
a->acl_attrval_mr = a->acl_attrs[ 0 ].an_desc->ad_type->sat_equality;
}
if ( a->acl_attrval_mr == NULL ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"attr \"%s\" does not have an EQUALITY matching rule.\n",
fname, lineno, a->acl_attrs[ 0 ].an_name.bv_val );
goto fail;
}
rc = asserted_value_validate_normalize(
a->acl_attrs[ 0 ].an_desc,
a->acl_attrval_mr,
SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
&bv,
&a->acl_attrval,
&text,
NULL );
if ( rc != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ANY,
"%s: line %d: %s: line %d: " " attr \"%s\" normalization failed (%d: %s).\n",
fname, lineno,
fname, lineno,
a->acl_attrs[0].an_name.bv_val,
rc, text );
goto fail;
}
}
} else {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: expecting <what> got \"%s\"\n",
fname, lineno, left );
goto fail;
}
}
if ( !BER_BVISNULL( &a->acl_dn_pat ) &&
ber_bvccmp( &a->acl_dn_pat, '*' ) )
{
free( a->acl_dn_pat.bv_val );
BER_BVZERO( &a->acl_dn_pat );
a->acl_dn_style = ACL_STYLE_REGEX;
}
if ( !BER_BVISEMPTY( &a->acl_dn_pat ) ||
a->acl_dn_style != ACL_STYLE_REGEX )
{
if ( a->acl_dn_style != ACL_STYLE_REGEX ) {
struct berval bv;
rc = dnNormalize( 0, NULL, NULL, &a->acl_dn_pat, &bv, NULL);
if ( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: bad DN \"%s\" in to DN clause\n",
fname, lineno, a->acl_dn_pat.bv_val );
goto fail;
}
free( a->acl_dn_pat.bv_val );
a->acl_dn_pat = bv;
} else {
int e = regcomp( &a->acl_dn_re, a->acl_dn_pat.bv_val,
REG_EXTENDED | REG_ICASE );
if ( e ) {
char err[ SLAP_TEXT_BUFLEN ];
regerror( e, &a->acl_dn_re, err, sizeof( err ) );
Debug(LDAP_DEBUG_ANY,
"%s: line %d: regular expression \"%s\" bad because of %s\n",
fname, lineno, right, err );
goto fail;
}
}
}
/* by clause - select who has what access to entries */
} else if ( strcasecmp( argv[i], "by" ) == 0 ) {
if ( a == NULL ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"to clause required before by clause in access line\n",
fname, lineno );
goto fail;
}
/*
* by clause consists of <who> and <access>
*/
if ( ++i == argc ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: premature EOL: expecting <who>\n",
fname, lineno );
goto fail;
}
b = (Access *) ch_calloc( 1, sizeof(Access) );
ACL_INVALIDATE( b->a_access_mask );
/* get <who> */
for ( ; i < argc; i++ ) {
slap_style_t sty = ACL_STYLE_REGEX;
char *style_modifier = NULL;
char *style_level = NULL;
int level = 0;
int expand = 0;
slap_dn_access *bdn = &b->a_dn;
int is_realdn = 0;
split( argv[i], '=', &left, &right );
split( left, '.', &left, &style );
if ( style ) {
split( style, ',', &style, &style_modifier );
if ( strncasecmp( style, "level", STRLENOF( "level" ) ) == 0 ) {
split( style, '{', &style, &style_level );
if ( style_level != NULL ) {
char *p = strchr( style_level, '}' );
if ( p == NULL ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: premature eol: "
"expecting closing '}' in \"level{n}\"\n",
fname, lineno );
goto fail;
} else if ( p == style_level ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: empty level "
"in \"level{n}\"\n",
fname, lineno );
goto fail;
}
p[0] = '\0';
}
}
}
if ( style == NULL || *style == '\0' ||
strcasecmp( style, "exact" ) == 0 ||
strcasecmp( style, "baseObject" ) == 0 ||
strcasecmp( style, "base" ) == 0 )
{
sty = ACL_STYLE_BASE;
} else if ( strcasecmp( style, "onelevel" ) == 0 ||
strcasecmp( style, "one" ) == 0 )
{
sty = ACL_STYLE_ONE;
} else if ( strcasecmp( style, "subtree" ) == 0 ||
strcasecmp( style, "sub" ) == 0 )
{
sty = ACL_STYLE_SUBTREE;
} else if ( strcasecmp( style, "children" ) == 0 ) {
sty = ACL_STYLE_CHILDREN;
} else if ( strcasecmp( style, "level" ) == 0 )
{
if ( lutil_atoi( &level, style_level ) != 0 ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: unable to parse level "
"in \"level{n}\"\n",
fname, lineno );
goto fail;
}
sty = ACL_STYLE_LEVEL;
} else if ( strcasecmp( style, "regex" ) == 0 ) {
sty = ACL_STYLE_REGEX;
} else if ( strcasecmp( style, "expand" ) == 0 ) {
sty = ACL_STYLE_EXPAND;
} else if ( strcasecmp( style, "ip" ) == 0 ) {
sty = ACL_STYLE_IP;
} else if ( strcasecmp( style, "ipv6" ) == 0 ) {
#ifndef LDAP_PF_INET6
Debug( LDAP_DEBUG_ANY,
"%s: line %d: IPv6 not supported\n",
fname, lineno );
#endif /* ! LDAP_PF_INET6 */
sty = ACL_STYLE_IPV6;
} else if ( strcasecmp( style, "path" ) == 0 ) {
sty = ACL_STYLE_PATH;
#ifndef LDAP_PF_LOCAL
Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
"%s: line %d: "
"\"path\" style modifier is useless without local.\n",
fname, lineno );
goto fail;
#endif /* LDAP_PF_LOCAL */
} else {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: unknown style \"%s\" in by clause\n",
fname, lineno, style );
goto fail;
}
if ( style_modifier &&
strcasecmp( style_modifier, "expand" ) == 0 )
{
switch ( sty ) {
case ACL_STYLE_REGEX:
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"\"regex\" style implies \"expand\" modifier.\n",
fname, lineno );
goto fail;
break;
case ACL_STYLE_EXPAND:
break;
default:
/* we'll see later if it's pertinent */
expand = 1;
break;
}
}
if ( strncasecmp( left, "real", STRLENOF( "real" ) ) == 0 ) {
is_realdn = 1;
bdn = &b->a_realdn;
left += STRLENOF( "real" );
}
if ( strcasecmp( left, "*" ) == 0 ) {
if ( is_realdn ) {
goto fail;
}
ber_str2bv( "*", STRLENOF( "*" ), 1, &bv );
sty = ACL_STYLE_REGEX;
} else if ( strcasecmp( left, "anonymous" ) == 0 ) {
ber_str2bv("anonymous", STRLENOF( "anonymous" ), 1, &bv);
sty = ACL_STYLE_ANONYMOUS;
} else if ( strcasecmp( left, "users" ) == 0 ) {
ber_str2bv("users", STRLENOF( "users" ), 1, &bv);
sty = ACL_STYLE_USERS;
} else if ( strcasecmp( left, "self" ) == 0 ) {
ber_str2bv("self", STRLENOF( "self" ), 1, &bv);
sty = ACL_STYLE_SELF;
} else if ( strcasecmp( left, "dn" ) == 0 ) {
if ( sty == ACL_STYLE_REGEX ) {
bdn->a_style = ACL_STYLE_REGEX;
if ( right == NULL ) {
/* no '=' */
ber_str2bv("users",
STRLENOF( "users" ),
1, &bv);
bdn->a_style = ACL_STYLE_USERS;
} else if (*right == '\0' ) {
/* dn="" */
ber_str2bv("anonymous",
STRLENOF( "anonymous" ),
1, &bv);
bdn->a_style = ACL_STYLE_ANONYMOUS;
} else if ( strcmp( right, "*" ) == 0 ) {
/* dn=* */
/* any or users? users for now */
ber_str2bv("users",
STRLENOF( "users" ),
1, &bv);
bdn->a_style = ACL_STYLE_USERS;
} else if ( strcmp( right, ".+" ) == 0
|| strcmp( right, "^.+" ) == 0
|| strcmp( right, ".+$" ) == 0
|| strcmp( right, "^.+$" ) == 0
|| strcmp( right, ".+$$" ) == 0
|| strcmp( right, "^.+$$" ) == 0 )
{
ber_str2bv("users",
STRLENOF( "users" ),
1, &bv);
bdn->a_style = ACL_STYLE_USERS;
} else if ( strcmp( right, ".*" ) == 0
|| strcmp( right, "^.*" ) == 0
|| strcmp( right, ".*$" ) == 0
|| strcmp( right, "^.*$" ) == 0
|| strcmp( right, ".*$$" ) == 0
|| strcmp( right, "^.*$$" ) == 0 )
{
ber_str2bv("*",
STRLENOF( "*" ),
1, &bv);
} else {
acl_regex_normalized_dn( right, &bv );
if ( !ber_bvccmp( &bv, '*' ) ) {
regtest( fname, lineno, bv.bv_val );
}
}
} else if ( right == NULL || *right == '\0' ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing \"=\" in (or value after) \"%s\" "
"in by clause\n",
fname, lineno, left );
goto fail;
} else {
ber_str2bv( right, 0, 1, &bv );
}
} else {
BER_BVZERO( &bv );
}
if ( !BER_BVISNULL( &bv ) ) {
if ( !BER_BVISEMPTY( &bdn->a_pat ) ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: dn pattern already specified.\n",
fname, lineno );
goto fail;
}
if ( sty != ACL_STYLE_REGEX &&
sty != ACL_STYLE_ANONYMOUS &&
sty != ACL_STYLE_USERS &&
sty != ACL_STYLE_SELF &&
expand == 0 )
{
rc = dnNormalize(0, NULL, NULL,
&bv, &bdn->a_pat, NULL);
if ( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: bad DN \"%s\" in by DN clause\n",
fname, lineno, bv.bv_val );
goto fail;
}
free( bv.bv_val );
if ( sty == ACL_STYLE_BASE
&& be != NULL
&& !BER_BVISNULL( &be->be_rootndn )
&& dn_match( &bdn->a_pat, &be->be_rootndn ) )
{
Debug( LDAP_DEBUG_ANY,
"%s: line %d: rootdn is always granted "
"unlimited privileges.\n",
fname, lineno );
}
} else {
bdn->a_pat = bv;
}
bdn->a_style = sty;
if ( expand ) {
char *exp;
int gotit = 0;
for ( exp = strchr( bdn->a_pat.bv_val, '$' );
exp && (ber_len_t)(exp - bdn->a_pat.bv_val)
< bdn->a_pat.bv_len;
exp = strchr( exp, '$' ) )
{
if ( ( isdigit( (unsigned char) exp[ 1 ] ) ||
exp[ 1 ] == '{' ) ) {
gotit = 1;
break;
}
}
if ( gotit == 1 ) {
bdn->a_expand = expand;
} else {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"\"expand\" used with no expansions in \"pattern\".\n",
fname, lineno );
goto fail;
}
}
if ( sty == ACL_STYLE_SELF ) {
bdn->a_self_level = level;
} else {
if ( level < 0 ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: bad negative level \"%d\" "
"in by DN clause\n",
fname, lineno, level );
goto fail;
} else if ( level == 1 ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: \"onelevel\" should be used "
"instead of \"level{1}\" in by DN clause\n",
fname, lineno );
} else if ( level == 0 && sty == ACL_STYLE_LEVEL ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: \"base\" should be used "
"instead of \"level{0}\" in by DN clause\n",
fname, lineno );
}
bdn->a_level = level;
}
continue;
}
if ( strcasecmp( left, "dnattr" ) == 0 ) {
if ( right == NULL || right[0] == '\0' ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing \"=\" in (or value after) \"%s\" "
"in by clause\n",
fname, lineno, left );
goto fail;
}
if( bdn->a_at != NULL ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: dnattr already specified.\n",
fname, lineno );
goto fail;
}
rc = slap_str2ad( right, &bdn->a_at, &text );
if( rc != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ANY,
"%s: line %d: dnattr \"%s\": %s\n",
fname, lineno, right,
text );
goto fail;
}
if( !is_at_syntax( bdn->a_at->ad_type,
SLAPD_DN_SYNTAX ) &&
!is_at_syntax( bdn->a_at->ad_type,
SLAPD_NAMEUID_SYNTAX ))
{
Debug(LDAP_DEBUG_ANY,
"%s: line %d: dnattr \"%s\": " "inappropriate syntax: %s\n\n",
fname, lineno, right,
bdn->a_at->ad_type->sat_syntax_oid );
goto fail;
}
if( bdn->a_at->ad_type->sat_equality == NULL ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: dnattr \"%s\": "
"inappropriate matching (no EQUALITY)\n",
fname, lineno, right );
goto fail;
}
continue;
}
if ( strncasecmp( left, "group", STRLENOF( "group" ) ) == 0 ) {
char *name = NULL;
char *value = NULL;
char *attr_name = SLAPD_GROUP_ATTR;
switch ( sty ) {
case ACL_STYLE_REGEX:
/* legacy, tolerated */
Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
"%s: line %d: "
"deprecated group style \"regex\"; "
"use \"expand\" instead.\n",
fname, lineno );
sty = ACL_STYLE_EXPAND;
break;
case ACL_STYLE_BASE:
/* legal, traditional */
case ACL_STYLE_EXPAND:
/* legal, substring expansion; supersedes regex */
break;
default:
/* unknown */
Debug( LDAP_DEBUG_ANY,
"%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( right == NULL || right[0] == '\0' ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: "
"missing \"=\" in (or value after) \"%s\" "
"in by clause.\n",
fname, lineno, left );
goto fail;
}
if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: group pattern already specified.\n",
fname, lineno );
goto fail;
}
/* format of string is
"group/objectClassValue/groupAttrName" */
if ( ( value = strchr(left, '/') ) != NULL ) {
*value++ = '\0';
if ( *value && ( name = strchr( value, '/' ) ) != NULL ) {
*name++ = '\0';
}
}
b->a_group_style = sty;
if ( sty == ACL_STYLE_EXPAND ) {
acl_regex_normalized_dn( right, &bv );
if ( !ber_bvccmp( &bv, '*' ) ) {
regtest( fname, lineno, bv.bv_val );
}
b->a_group_pat = bv;
} else {
ber_str2bv( right, 0, 0, &bv );
rc = dnNormalize( 0, NULL, NULL, &bv,
&b->a_group_pat, NULL );
if ( rc != LDAP_SUCCESS ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: bad DN \"%s\".\n",
fname, lineno, right );
goto fail;
}
}
if ( value && *value ) {
b->a_group_oc = oc_find( value );
*--value = '/';
if ( b->a_group_oc == NULL ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: group objectclass "
"\"%s\" unknown.\n",
fname, lineno, value );
goto fail;
}
} else {
b->a_group_oc = oc_find( SLAPD_GROUP_CLASS );
if( b->a_group_oc == NULL ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: group default objectclass "
"\"%s\" unknown.\n",
fname, lineno, SLAPD_GROUP_CLASS );
goto fail;
}
}
if ( is_object_subclass( slap_schema.si_oc_referral,
b->a_group_oc ) )
{
Debug( LDAP_DEBUG_ANY,
"%s: line %d: group objectclass \"%s\" "
"is subclass of referral.\n",
fname, lineno, value );
goto fail;
}
if ( is_object_subclass( slap_schema.si_oc_alias,
b->a_group_oc ) )
{
Debug( LDAP_DEBUG_ANY,
"%s: line %d: group objectclass \"%s\" "
"is subclass of alias.\n",
fname, lineno, value );
goto fail;
}
if ( name && *name ) {
attr_name = name;
*--name = '/';
}
rc = slap_str2ad( attr_name, &b->a_group_at, &text );
if ( rc != LDAP_SUCCESS ) {
Debug(LDAP_DEBUG_ANY,
"%s: line %d: group \"%s\": %s.\n",
fname, lineno, right,
text );
goto fail;
}
if ( !is_at_syntax( b->a_group_at->ad_type,
SLAPD_DN_SYNTAX ) /* e.g. "member" */
&& !is_at_syntax( b->a_group_at->ad_type,
SLAPD_NAMEUID_SYNTAX ) /* e.g. memberUID */
&& !is_at_subtype( b->a_group_at->ad_type,
slap_schema.si_ad_labeledURI->ad_type ) /* e.g. memberURL */ )
{
Debug(LDAP_DEBUG_ANY,
"%s: line %d: group \"%s\" attr \"%s\": inappropriate syntax: %s; " "must be " SLAPD_DN_SYNTAX " (DN), " SLAPD_NAMEUID_SYNTAX " (NameUID) " "or a subtype of labeledURI.\n",
fname, lineno, right,
attr_name,
at_syntax(b->a_group_at->ad_type) );
goto fail;
}
{
int rc;
ObjectClass *ocs[2];
ocs[0] = b->a_group_oc;
ocs[1] = NULL;
rc = oc_check_allowed( b->a_group_at->ad_type,
ocs, NULL );
if( rc != 0 ) {
Debug(LDAP_DEBUG_ANY,
"%s: line %d: group: \"%s\" not allowed by \"%s\".\n",
fname, lineno,
b->a_group_at->ad_cname.bv_val,
b->a_group_oc->soc_oid );
goto fail;
}
}
continue;
}
if ( strcasecmp( left, "peername" ) == 0 ) {
switch ( sty ) {
case ACL_STYLE_REGEX:
case ACL_STYLE_BASE:
/* legal, traditional */
case ACL_STYLE_EXPAND:
/* cheap replacement to regex for simple expansion */
case ACL_STYLE_IP:
case ACL_STYLE_IPV6:
case ACL_STYLE_PATH:
/* legal, peername specific */
break;
default:
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( right == NULL || right[0] == '\0' ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing \"=\" in (or value after) \"%s\" "
"in by clause.\n",
fname, lineno, left );
goto fail;
}
if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"peername pattern already specified.\n",
fname, lineno );
goto fail;
}
b->a_peername_style = sty;
if ( sty == ACL_STYLE_REGEX ) {
acl_regex_normalized_dn( right, &bv );
if ( !ber_bvccmp( &bv, '*' ) ) {
regtest( fname, lineno, bv.bv_val );
}
b->a_peername_pat = bv;
} else {
ber_str2bv( right, 0, 1, &b->a_peername_pat );
if ( sty == ACL_STYLE_IP ) {
char *addr = NULL,
*mask = NULL,
*port = NULL;
split( right, '{', &addr, &port );
split( addr, '%', &addr, &mask );
b->a_peername_addr = inet_addr( addr );
if ( b->a_peername_addr == (unsigned long)(-1) ) {
/* illegal address */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"illegal peername address \"%s\".\n",
fname, lineno, addr );
goto fail;
}
b->a_peername_mask = (unsigned long)(-1);
if ( mask != NULL ) {
b->a_peername_mask = inet_addr( mask );
if ( b->a_peername_mask ==
(unsigned long)(-1) )
{
/* illegal mask */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"illegal peername address mask "
"\"%s\".\n",
fname, lineno, mask );
goto fail;
}
}
b->a_peername_port = -1;
if ( port ) {
char *end = NULL;
b->a_peername_port = strtol( port, &end, 10 );
if ( end == port || end[0] != '}' ) {
/* illegal port */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"illegal peername port specification "
"\"{%s}\".\n",
fname, lineno, port );
goto fail;
}
}
#ifdef LDAP_PF_INET6
} else if ( sty == ACL_STYLE_IPV6 ) {
char *addr = NULL,
*mask = NULL,
*port = NULL;
split( right, '{', &addr, &port );
split( addr, '%', &addr, &mask );
if ( inet_pton( AF_INET6, addr, &b->a_peername_addr6 ) != 1 ) {
/* illegal address */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"illegal peername address \"%s\".\n",
fname, lineno, addr );
goto fail;
}
if ( mask == NULL ) {
mask = "FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF";
}
if ( inet_pton( AF_INET6, mask, &b->a_peername_mask6 ) != 1 ) {
/* illegal mask */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"illegal peername address mask "
"\"%s\".\n",
fname, lineno, mask );
goto fail;
}
b->a_peername_port = -1;
if ( port ) {
char *end = NULL;
b->a_peername_port = strtol( port, &end, 10 );
if ( end == port || end[0] != '}' ) {
/* illegal port */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"illegal peername port specification "
"\"{%s}\".\n",
fname, lineno, port );
goto fail;
}
}
#endif /* LDAP_PF_INET6 */
}
}
continue;
}
if ( strcasecmp( left, "sockname" ) == 0 ) {
switch ( sty ) {
case ACL_STYLE_REGEX:
case ACL_STYLE_BASE:
/* legal, traditional */
case ACL_STYLE_EXPAND:
/* cheap replacement to regex for simple expansion */
break;
default:
/* unknown */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause\n",
fname, lineno, style );
goto fail;
}
if ( right == NULL || right[0] == '\0' ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing \"=\" in (or value after) \"%s\" "
"in by clause\n",
fname, lineno, left );
goto fail;
}
if ( !BER_BVISNULL( &b->a_sockname_pat ) ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"sockname pattern already specified.\n",
fname, lineno );
goto fail;
}
b->a_sockname_style = sty;
if ( sty == ACL_STYLE_REGEX ) {
acl_regex_normalized_dn( right, &bv );
if ( !ber_bvccmp( &bv, '*' ) ) {
regtest( fname, lineno, bv.bv_val );
}
b->a_sockname_pat = bv;
} else {
ber_str2bv( right, 0, 1, &b->a_sockname_pat );
}
continue;
}
if ( strcasecmp( left, "domain" ) == 0 ) {
switch ( sty ) {
case ACL_STYLE_REGEX:
case ACL_STYLE_BASE:
case ACL_STYLE_SUBTREE:
/* legal, traditional */
break;
case ACL_STYLE_EXPAND:
/* tolerated: means exact,expand */
if ( expand ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: "
"\"expand\" modifier "
"with \"expand\" style.\n",
fname, lineno );
}
sty = ACL_STYLE_BASE;
expand = 1;
break;
default:
/* unknown */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( right == NULL || right[0] == '\0' ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing \"=\" in (or value after) \"%s\" "
"in by clause.\n",
fname, lineno, left );
goto fail;
}
if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: domain pattern already specified.\n",
fname, lineno );
goto fail;
}
b->a_domain_style = sty;
b->a_domain_expand = expand;
if ( sty == ACL_STYLE_REGEX ) {
acl_regex_normalized_dn( right, &bv );
if ( !ber_bvccmp( &bv, '*' ) ) {
regtest( fname, lineno, bv.bv_val );
}
b->a_domain_pat = bv;
} else {
ber_str2bv( right, 0, 1, &b->a_domain_pat );
}
continue;
}
if ( strcasecmp( left, "sockurl" ) == 0 ) {
switch ( sty ) {
case ACL_STYLE_REGEX:
case ACL_STYLE_BASE:
/* legal, traditional */
case ACL_STYLE_EXPAND:
/* cheap replacement to regex for simple expansion */
break;
default:
/* unknown */
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( right == NULL || right[0] == '\0' ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"missing \"=\" in (or value after) \"%s\" "
"in by clause.\n",
fname, lineno, left );
goto fail;
}
if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: sockurl pattern already specified.\n",
fname, lineno );
goto fail;
}
b->a_sockurl_style = sty;
if ( sty == ACL_STYLE_REGEX ) {
acl_regex_normalized_dn( right, &bv );
if ( !ber_bvccmp( &bv, '*' ) ) {
regtest( fname, lineno, bv.bv_val );
}
b->a_sockurl_pat = bv;
} else {
ber_str2bv( right, 0, 1, &b->a_sockurl_pat );
}
continue;
}
if ( strcasecmp( left, "set" ) == 0 ) {
switch ( sty ) {
/* deprecated */
case ACL_STYLE_REGEX:
Debug( LDAP_DEBUG_CONFIG | LDAP_DEBUG_ACL,
"%s: line %d: "
"deprecated set style "
"\"regex\" in <by> clause; "
"use \"expand\" instead.\n",
fname, lineno );
sty = ACL_STYLE_EXPAND;
/* FALLTHRU */
case ACL_STYLE_BASE:
case ACL_STYLE_EXPAND:
break;
default:
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: set attribute already specified.\n",
fname, lineno );
goto fail;
}
if ( right == NULL || *right == '\0' ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: no set is defined.\n",
fname, lineno );
goto fail;
}
b->a_set_style = sty;
ber_str2bv( right, 0, 1, &b->a_set_pat );
continue;
}
#ifdef SLAP_DYNACL
{
char *name = NULL,
*opts = NULL;
#if 1 /* tolerate legacy "aci" <who> */
if ( strcasecmp( left, "aci" ) == 0 ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"undocumented deprecated \"aci\" directive "
"is superseded by \"dynacl/aci\".\n",
fname, lineno );
name = "aci";
} else
#endif /* tolerate legacy "aci" <who> */
if ( strncasecmp( left, "dynacl/", STRLENOF( "dynacl/" ) ) == 0 ) {
name = &left[ STRLENOF( "dynacl/" ) ];
opts = strchr( name, '/' );
if ( opts ) {
opts[ 0 ] = '\0';
opts++;
}
}
if ( name ) {
if ( slap_dynacl_config( fname, lineno, b, name, opts, sty, right ) ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"unable to configure dynacl \"%s\".\n",
fname, lineno, name );
goto fail;
}
continue;
}
}
#endif /* SLAP_DYNACL */
if ( strcasecmp( left, "ssf" ) == 0 ) {
if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( b->a_authz.sai_ssf ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: ssf attribute already specified.\n",
fname, lineno );
goto fail;
}
if ( right == NULL || *right == '\0' ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: no ssf is defined.\n",
fname, lineno );
goto fail;
}
if ( lutil_atou( &b->a_authz.sai_ssf, right ) != 0 ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: unable to parse ssf value (%s).\n",
fname, lineno, right );
goto fail;
}
if ( !b->a_authz.sai_ssf ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: invalid ssf value (%s).\n",
fname, lineno, right );
goto fail;
}
continue;
}
if ( strcasecmp( left, "transport_ssf" ) == 0 ) {
if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( b->a_authz.sai_transport_ssf ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"transport_ssf attribute already specified.\n",
fname, lineno );
goto fail;
}
if ( right == NULL || *right == '\0' ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: no transport_ssf is defined.\n",
fname, lineno );
goto fail;
}
if ( lutil_atou( &b->a_authz.sai_transport_ssf, right ) != 0 ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"unable to parse transport_ssf value (%s).\n",
fname, lineno, right );
goto fail;
}
if ( !b->a_authz.sai_transport_ssf ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: invalid transport_ssf value (%s).\n",
fname, lineno, right );
goto fail;
}
continue;
}
if ( strcasecmp( left, "tls_ssf" ) == 0 ) {
if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( b->a_authz.sai_tls_ssf ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"tls_ssf attribute already specified.\n",
fname, lineno );
goto fail;
}
if ( right == NULL || *right == '\0' ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: no tls_ssf is defined\n",
fname, lineno );
goto fail;
}
if ( lutil_atou( &b->a_authz.sai_tls_ssf, right ) != 0 ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"unable to parse tls_ssf value (%s).\n",
fname, lineno, right );
goto fail;
}
if ( !b->a_authz.sai_tls_ssf ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: invalid tls_ssf value (%s).\n",
fname, lineno, right );
goto fail;
}
continue;
}
if ( strcasecmp( left, "sasl_ssf" ) == 0 ) {
if ( sty != ACL_STYLE_REGEX && sty != ACL_STYLE_BASE ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"inappropriate style \"%s\" in by clause.\n",
fname, lineno, style );
goto fail;
}
if ( b->a_authz.sai_sasl_ssf ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"sasl_ssf attribute already specified.\n",
fname, lineno );
goto fail;
}
if ( right == NULL || *right == '\0' ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: no sasl_ssf is defined.\n",
fname, lineno );
goto fail;
}
if ( lutil_atou( &b->a_authz.sai_sasl_ssf, right ) != 0 ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"unable to parse sasl_ssf value (%s).\n",
fname, lineno, right );
goto fail;
}
if ( !b->a_authz.sai_sasl_ssf ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: invalid sasl_ssf value (%s).\n",
fname, lineno, right );
goto fail;
}
continue;
}
if ( right != NULL ) {
/* unsplit */
right[-1] = '=';
}
break;
}
if ( i == argc || ( strcasecmp( left, "stop" ) == 0 ) ) {
/* out of arguments or plain stop */
ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
b->a_type = ACL_STOP;
access_append( &a->acl_access, b );
continue;
}
if ( strcasecmp( left, "continue" ) == 0 ) {
/* plain continue */
ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
b->a_type = ACL_CONTINUE;
access_append( &a->acl_access, b );
continue;
}
if ( strcasecmp( left, "break" ) == 0 ) {
/* plain continue */
ACL_PRIV_ASSIGN(b->a_access_mask, ACL_PRIV_ADDITIVE);
ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
b->a_type = ACL_BREAK;
access_append( &a->acl_access, b );
continue;
}
if ( strcasecmp( left, "by" ) == 0 ) {
/* we've gone too far */
--i;
ACL_PRIV_ASSIGN( b->a_access_mask, ACL_PRIV_ADDITIVE );
ACL_PRIV_SET( b->a_access_mask, ACL_PRIV_NONE);
b->a_type = ACL_STOP;
access_append( &a->acl_access, b );
continue;
}
/* get <access> */
{
char *lleft = left;
if ( strncasecmp( left, "self", STRLENOF( "self" ) ) == 0 ) {
b->a_dn_self = 1;
lleft = &left[ STRLENOF( "self" ) ];
} else if ( strncasecmp( left, "realself", STRLENOF( "realself" ) ) == 0 ) {
b->a_realdn_self = 1;
lleft = &left[ STRLENOF( "realself" ) ];
}
ACL_PRIV_ASSIGN( b->a_access_mask, str2accessmask( lleft ) );
}
if ( ACL_IS_INVALID( b->a_access_mask ) ) {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: expecting <access> got \"%s\".\n",
fname, lineno, left );
goto fail;
}
b->a_type = ACL_STOP;
if ( ++i == argc ) {
/* out of arguments or plain stop */
access_append( &a->acl_access, b );
continue;
}
if ( strcasecmp( argv[i], "continue" ) == 0 ) {
/* plain continue */
b->a_type = ACL_CONTINUE;
} else if ( strcasecmp( argv[i], "break" ) == 0 ) {
/* plain continue */
b->a_type = ACL_BREAK;
} else if ( strcasecmp( argv[i], "stop" ) != 0 ) {
/* gone to far */
i--;
}
access_append( &a->acl_access, b );
b = NULL;
} else {
Debug( LDAP_DEBUG_ANY,
"%s: line %d: expecting \"to\" "
"or \"by\" got \"%s\"\n",
fname, lineno, argv[i] );
goto fail;
}
}
/* if we have no real access clause, complain and do nothing */
if ( a == NULL ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"warning: no access clause(s) specified in access line.\n",
fname, lineno );
goto fail;
} else {
#ifdef LDAP_DEBUG
if ( slap_debug & LDAP_DEBUG_ACL ) {
print_acl( be, a );
}
#endif
if ( a->acl_access == NULL ) {
Debug( LDAP_DEBUG_ANY, "%s: line %d: "
"warning: no by clause(s) specified in access line.\n",
fname, lineno );
goto fail;
}
if ( be != NULL ) {
if ( be->be_nsuffix == NULL ) {
Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
"scope checking needs suffix before ACLs.\n",
fname, lineno );
/* go ahead, since checking is not authoritative */
} else if ( !BER_BVISNULL( &be->be_nsuffix[ 1 ] ) ) {
Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
"scope checking only applies to single-valued "
"suffix databases\n",
fname, lineno );
/* go ahead, since checking is not authoritative */
} else {
switch ( check_scope( be, a ) ) {
case ACL_SCOPE_UNKNOWN:
Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
"cannot assess the validity of the ACL scope within "
"backend naming context\n",
fname, lineno );
break;
case ACL_SCOPE_WARN:
Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
"ACL could be out of scope within backend naming context\n",
fname, lineno );
break;
case ACL_SCOPE_PARTIAL:
Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
"ACL appears to be partially out of scope within "
"backend naming context\n",
fname, lineno );
break;
case ACL_SCOPE_ERR:
Debug( LDAP_DEBUG_ACL, "%s: line %d: warning: "
"ACL appears to be out of scope within "
"backend naming context\n",
fname, lineno );
break;
default:
break;
}
}
acl_append( &be->be_acl, a, pos );
} else {
acl_append( &frontendDB->be_acl, a, pos );
}
}
return 0;
fail:
if ( b ) access_free( b );
if ( a ) acl_free( a );
return acl_usage();
}
char *
accessmask2str( slap_mask_t mask, char *buf, int debug )
{
int none = 1;
char *ptr = buf;
assert( buf != NULL );
if ( ACL_IS_INVALID( mask ) ) {
return "invalid";
}
buf[0] = '\0';
if ( ACL_IS_LEVEL( mask ) ) {
if ( ACL_LVL_IS_NONE(mask) ) {
ptr = lutil_strcopy( ptr, "none" );
} else if ( ACL_LVL_IS_DISCLOSE(mask) ) {
ptr = lutil_strcopy( ptr, "disclose" );
} else if ( ACL_LVL_IS_AUTH(mask) ) {
ptr = lutil_strcopy( ptr, "auth" );
} else if ( ACL_LVL_IS_COMPARE(mask) ) {
ptr = lutil_strcopy( ptr, "compare" );
} else if ( ACL_LVL_IS_SEARCH(mask) ) {
ptr = lutil_strcopy( ptr, "search" );
} else if ( ACL_LVL_IS_READ(mask) ) {
ptr = lutil_strcopy( ptr, "read" );
} else if ( ACL_LVL_IS_WRITE(mask) ) {
ptr = lutil_strcopy( ptr, "write" );
} else if ( ACL_LVL_IS_WADD(mask) ) {
ptr = lutil_strcopy( ptr, "add" );
} else if ( ACL_LVL_IS_WDEL(mask) ) {
ptr = lutil_strcopy( ptr, "delete" );
} else if ( ACL_LVL_IS_MANAGE(mask) ) {
ptr = lutil_strcopy( ptr, "manage" );
} else {
ptr = lutil_strcopy( ptr, "unknown" );
}
if ( !debug ) {
*ptr = '\0';
return buf;
}
*ptr++ = '(';
}
if( ACL_IS_ADDITIVE( mask ) ) {
*ptr++ = '+';
} else if( ACL_IS_SUBTRACTIVE( mask ) ) {
*ptr++ = '-';
} else {
*ptr++ = '=';
}
if ( ACL_PRIV_ISSET(mask, ACL_PRIV_MANAGE) ) {
none = 0;
*ptr++ = 'm';
}
if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WRITE) ) {
none = 0;
*ptr++ = 'w';
} else if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WADD) ) {
none = 0;
*ptr++ = 'a';
} else if ( ACL_PRIV_ISSET(mask, ACL_PRIV_WDEL) ) {
none = 0;
*ptr++ = 'z';
}
if ( ACL_PRIV_ISSET(mask, ACL_PRIV_READ) ) {
none = 0;
*ptr++ = 'r';
}
if ( ACL_PRIV_ISSET(mask, ACL_PRIV_SEARCH) ) {
none = 0;
*ptr++ = 's';
}
if ( ACL_PRIV_ISSET(mask, ACL_PRIV_COMPARE) ) {
none = 0;
*ptr++ = 'c';
}
if ( ACL_PRIV_ISSET(mask, ACL_PRIV_AUTH) ) {
none = 0;
*ptr++ = 'x';
}
if ( ACL_PRIV_ISSET(mask, ACL_PRIV_DISCLOSE) ) {
none = 0;
*ptr++ = 'd';
}
if ( none && ACL_PRIV_ISSET(mask, ACL_PRIV_NONE) ) {
none = 0;
*ptr++ = '0';
}
if ( none ) {
ptr = buf;
}
if ( ACL_IS_LEVEL( mask ) ) {
*ptr++ = ')';
}
*ptr = '\0';
return buf;
}
slap_mask_t
str2accessmask( const char *str )
{
slap_mask_t mask;
if( !ASCII_ALPHA(str[0]) ) {
int i;
if ( str[0] == '=' ) {
ACL_INIT(mask);
} else if( str[0] == '+' ) {
ACL_PRIV_ASSIGN(mask, ACL_PRIV_ADDITIVE);
} else if( str[0] == '-' ) {
ACL_PRIV_ASSIGN(mask, ACL_PRIV_SUBSTRACTIVE);
} else {
ACL_INVALIDATE(mask);
return mask;
}
for( i=1; str[i] != '\0'; i++ ) {
if( TOLOWER((unsigned char) str[i]) == 'm' ) {
ACL_PRIV_SET(mask, ACL_PRIV_MANAGE);
} else if( TOLOWER((unsigned char) str[i]) == 'w' ) {
ACL_PRIV_SET(mask, ACL_PRIV_WRITE);
} else if( TOLOWER((unsigned char) str[i]) == 'a' ) {
ACL_PRIV_SET(mask, ACL_PRIV_WADD);
} else if( TOLOWER((unsigned char) str[i]) == 'z' ) {
ACL_PRIV_SET(mask, ACL_PRIV_WDEL);
} else if( TOLOWER((unsigned char) str[i]) == 'r' ) {
ACL_PRIV_SET(mask, ACL_PRIV_READ);
} else if( TOLOWER((unsigned char) str[i]) == 's' ) {
ACL_PRIV_SET(mask, ACL_PRIV_SEARCH);
} else if( TOLOWER((unsigned char) str[i]) == 'c' ) {
ACL_PRIV_SET(mask, ACL_PRIV_COMPARE);
} else if( TOLOWER((unsigned char) str[i]) == 'x' ) {
ACL_PRIV_SET(mask, ACL_PRIV_AUTH);
} else if( TOLOWER((unsigned char) str[i]) == 'd' ) {
ACL_PRIV_SET(mask, ACL_PRIV_DISCLOSE);
} else if( str[i] == '0' ) {
ACL_PRIV_SET(mask, ACL_PRIV_NONE);
} else {
ACL_INVALIDATE(mask);
return mask;
}
}
return mask;
}
if ( strcasecmp( str, "none" ) == 0 ) {
ACL_LVL_ASSIGN_NONE(mask);
} else if ( strcasecmp( str, "disclose" ) == 0 ) {
ACL_LVL_ASSIGN_DISCLOSE(mask);
} else if ( strcasecmp( str, "auth" ) == 0 ) {
ACL_LVL_ASSIGN_AUTH(mask);
} else if ( strcasecmp( str, "compare" ) == 0 ) {
ACL_LVL_ASSIGN_COMPARE(mask);
} else if ( strcasecmp( str, "search" ) == 0 ) {
ACL_LVL_ASSIGN_SEARCH(mask);
} else if ( strcasecmp( str, "read" ) == 0 ) {
ACL_LVL_ASSIGN_READ(mask);
} else if ( strcasecmp( str, "add" ) == 0 ) {
ACL_LVL_ASSIGN_WADD(mask);
} else if ( strcasecmp( str, "delete" ) == 0 ) {
ACL_LVL_ASSIGN_WDEL(mask);
} else if ( strcasecmp( str, "write" ) == 0 ) {
ACL_LVL_ASSIGN_WRITE(mask);
} else if ( strcasecmp( str, "manage" ) == 0 ) {
ACL_LVL_ASSIGN_MANAGE(mask);
} else {
ACL_INVALIDATE( mask );
}
return mask;
}
static int
acl_usage( void )
{
char *access =
"<access clause> ::= access to <what> "
"[ by <who> [ <access> ] [ <control> ] ]+ \n";
char *what =
"<what> ::= * | dn[.<dnstyle>=<DN>] [filter=<filter>] [attrs=<attrspec>]\n"
"<attrspec> ::= <attrname> [val[/<matchingRule>][.<attrstyle>]=<value>] | <attrlist>\n"
"<attrlist> ::= <attr> [ , <attrlist> ]\n"
"<attr> ::= <attrname> | @<objectClass> | !<objectClass> | entry | children\n";
char *who =
"<who> ::= [ * | anonymous | users | self | dn[.<dnstyle>]=<DN> ]\n"
"\t[ realanonymous | realusers | realself | realdn[.<dnstyle>]=<DN> ]\n"
"\t[dnattr=<attrname>]\n"
"\t[realdnattr=<attrname>]\n"
"\t[group[/<objectclass>[/<attrname>]][.<style>]=<group>]\n"
"\t[peername[.<peernamestyle>]=<peer>] [sockname[.<style>]=<name>]\n"
"\t[domain[.<domainstyle>]=<domain>] [sockurl[.<style>]=<url>]\n"
#ifdef SLAP_DYNACL
"\t[dynacl/<name>[/<options>][.<dynstyle>][=<pattern>]]\n"
#endif /* SLAP_DYNACL */
"\t[ssf=<n>] [transport_ssf=<n>] [tls_ssf=<n>] [sasl_ssf=<n>]\n"
"<style> ::= exact | regex | base(Object)\n"
"<dnstyle> ::= base(Object) | one(level) | sub(tree) | children | "
"exact | regex\n"
"<attrstyle> ::= exact | regex | base(Object) | one(level) | "
"sub(tree) | children\n"
"<peernamestyle> ::= exact | regex | ip | ipv6 | path\n"
"<domainstyle> ::= exact | regex | base(Object) | sub(tree)\n"
"<access> ::= [[real]self]{<level>|<priv>}\n"
"<level> ::= none|disclose|auth|compare|search|read|{write|add|delete}|manage\n"
"<priv> ::= {=|+|-}{0|d|x|c|s|r|{w|a|z}|m}+\n"
"<control> ::= [ stop | continue | break ]\n"
#ifdef SLAP_DYNACL
#ifdef SLAPD_ACI_ENABLED
"dynacl:\n"
"\t<name>=ACI\t<pattern>=<attrname>\n"
#endif /* SLAPD_ACI_ENABLED */
#endif /* ! SLAP_DYNACL */
"";
Debug( LDAP_DEBUG_ANY, "%s%s%s\n", access, what, who );
return 1;
}
/*
* Set pattern to a "normalized" DN from src.
* At present it simply eats the (optional) space after
* a RDN separator (,)
* Eventually will evolve in a more complete normalization
*/
static void
acl_regex_normalized_dn(
const char *src,
struct berval *pattern )
{
char *str, *p;
ber_len_t len;
str = ch_strdup( src );
len = strlen( src );
for ( p = str; p && p[0]; p++ ) {
/* escape */
if ( p[0] == '\\' && p[1] ) {
/*
* if escaping a hex pair we should
* increment p twice; however, in that
* case the second hex number does
* no harm
*/
p++;
}
if ( p[0] == ',' && p[1] == ' ' ) {
char *q;
/*
* too much space should be an error if we are pedantic
*/
for ( q = &p[2]; q[0] == ' '; q++ ) {
/* DO NOTHING */ ;
}
AC_MEMCPY( p+1, q, len-(q-str)+1);
}
}
pattern->bv_val = str;
pattern->bv_len = p - str;
return;
}
static void
split(
char *line,
int splitchar,
char **left,
char **right )
{
*left = line;
if ( (*right = strchr( line, splitchar )) != NULL ) {
*((*right)++) = '\0';
}
}
static void
access_append( Access **l, Access *a )
{
for ( ; *l != NULL; l = &(*l)->a_next ) {
; /* Empty */
}
*l = a;
}
void
acl_append( AccessControl **l, AccessControl *a, int pos )
{
int i;
for (i=0 ; i != pos && *l != NULL; l = &(*l)->acl_next, i++ ) {
; /* Empty */
}
if ( *l && a )
a->acl_next = *l;
*l = a;
}
static void
access_free( Access *a )
{
if ( !BER_BVISNULL( &a->a_dn_pat ) ) {
free( a->a_dn_pat.bv_val );
}
if ( !BER_BVISNULL( &a->a_realdn_pat ) ) {
free( a->a_realdn_pat.bv_val );
}
if ( !BER_BVISNULL( &a->a_peername_pat ) ) {
free( a->a_peername_pat.bv_val );
}
if ( !BER_BVISNULL( &a->a_sockname_pat ) ) {
free( a->a_sockname_pat.bv_val );
}
if ( !BER_BVISNULL( &a->a_domain_pat ) ) {
free( a->a_domain_pat.bv_val );
}
if ( !BER_BVISNULL( &a->a_sockurl_pat ) ) {
free( a->a_sockurl_pat.bv_val );
}
if ( !BER_BVISNULL( &a->a_set_pat ) ) {
free( a->a_set_pat.bv_val );
}
if ( !BER_BVISNULL( &a->a_group_pat ) ) {
free( a->a_group_pat.bv_val );
}
#ifdef SLAP_DYNACL
if ( a->a_dynacl != NULL ) {
slap_dynacl_t *da;
for ( da = a->a_dynacl; da; ) {
slap_dynacl_t *tmp = da;
da = da->da_next;
if ( tmp->da_destroy ) {
tmp->da_destroy( tmp->da_private );
}
ch_free( tmp );
}
}
#endif /* SLAP_DYNACL */
free( a );
}
void
acl_free( AccessControl *a )
{
Access *n;
AttributeName *an;
if ( a->acl_filter ) {
filter_free( a->acl_filter );
}
if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
if ( a->acl_dn_style == ACL_STYLE_REGEX ) {
regfree( &a->acl_dn_re );
}
free ( a->acl_dn_pat.bv_val );
}
if ( a->acl_attrs ) {
for ( an = a->acl_attrs; !BER_BVISNULL( &an->an_name ); an++ ) {
free( an->an_name.bv_val );
}
free( a->acl_attrs );
if ( a->acl_attrval_style == ACL_STYLE_REGEX ) {
regfree( &a->acl_attrval_re );
}
if ( !BER_BVISNULL( &a->acl_attrval ) ) {
ber_memfree( a->acl_attrval.bv_val );
}
}
for ( ; a->acl_access; a->acl_access = n ) {
n = a->acl_access->a_next;
access_free( a->acl_access );
}
free( a );
}
void
acl_destroy( AccessControl *a )
{
AccessControl *n;
for ( ; a; a = n ) {
n = a->acl_next;
acl_free( a );
}
if ( !BER_BVISNULL( &aclbuf ) ) {
ch_free( aclbuf.bv_val );
BER_BVZERO( &aclbuf );
}
}
char *
access2str( slap_access_t access )
{
if ( access == ACL_NONE ) {
return "none";
} else if ( access == ACL_DISCLOSE ) {
return "disclose";
} else if ( access == ACL_AUTH ) {
return "auth";
} else if ( access == ACL_COMPARE ) {
return "compare";
} else if ( access == ACL_SEARCH ) {
return "search";
} else if ( access == ACL_READ ) {
return "read";
} else if ( access == ACL_WRITE ) {
return "write";
} else if ( access == ACL_WADD ) {
return "add";
} else if ( access == ACL_WDEL ) {
return "delete";
} else if ( access == ACL_MANAGE ) {
return "manage";
}
return "unknown";
}
slap_access_t
str2access( const char *str )
{
if ( strcasecmp( str, "none" ) == 0 ) {
return ACL_NONE;
} else if ( strcasecmp( str, "disclose" ) == 0 ) {
return ACL_DISCLOSE;
} else if ( strcasecmp( str, "auth" ) == 0 ) {
return ACL_AUTH;
} else if ( strcasecmp( str, "compare" ) == 0 ) {
return ACL_COMPARE;
} else if ( strcasecmp( str, "search" ) == 0 ) {
return ACL_SEARCH;
} else if ( strcasecmp( str, "read" ) == 0 ) {
return ACL_READ;
} else if ( strcasecmp( str, "write" ) == 0 ) {
return ACL_WRITE;
} else if ( strcasecmp( str, "add" ) == 0 ) {
return ACL_WADD;
} else if ( strcasecmp( str, "delete" ) == 0 ) {
return ACL_WDEL;
} else if ( strcasecmp( str, "manage" ) == 0 ) {
return ACL_MANAGE;
}
return( ACL_INVALID_ACCESS );
}
static char *
safe_strncopy( char *ptr, const char *src, size_t n, struct berval *buf )
{
while ( ptr + n >= buf->bv_val + buf->bv_len ) {
char *tmp = ch_realloc( buf->bv_val, 2*buf->bv_len );
if ( tmp == NULL ) {
return NULL;
}
ptr = tmp + (ptr - buf->bv_val);
buf->bv_val = tmp;
buf->bv_len *= 2;
}
return lutil_strncopy( ptr, src, n );
}
static char *
safe_strcopy( char *ptr, const char *s, struct berval *buf )
{
size_t n = strlen( s );
return safe_strncopy( ptr, s, n, buf );
}
static char *
safe_strbvcopy( char *ptr, const struct berval *bv, struct berval *buf )
{
return safe_strncopy( ptr, bv->bv_val, bv->bv_len, buf );
}
#define acl_safe_strcopy( ptr, s ) safe_strcopy( (ptr), (s), &aclbuf )
#define acl_safe_strncopy( ptr, s, n ) safe_strncopy( (ptr), (s), (n), &aclbuf )
#define acl_safe_strbvcopy( ptr, bv ) safe_strbvcopy( (ptr), (bv), &aclbuf )
static char *
dnaccess2text( slap_dn_access *bdn, char *ptr, int is_realdn )
{
*ptr++ = ' ';
if ( is_realdn ) {
ptr = acl_safe_strcopy( ptr, "real" );
}
if ( ber_bvccmp( &bdn->a_pat, '*' ) ||
bdn->a_style == ACL_STYLE_ANONYMOUS ||
bdn->a_style == ACL_STYLE_USERS ||
bdn->a_style == ACL_STYLE_SELF )
{
if ( is_realdn ) {
assert( ! ber_bvccmp( &bdn->a_pat, '*' ) );
}
ptr = acl_safe_strbvcopy( ptr, &bdn->a_pat );
if ( bdn->a_style == ACL_STYLE_SELF && bdn->a_self_level != 0 ) {
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), ".level{%d}", bdn->a_self_level );
if ( n > 0 ) {
ptr = acl_safe_strncopy( ptr, buf, n );
} /* else ? */
}
} else {
ptr = acl_safe_strcopy( ptr, "dn." );
if ( bdn->a_style == ACL_STYLE_BASE )
ptr = acl_safe_strcopy( ptr, style_base );
else
ptr = acl_safe_strcopy( ptr, style_strings[bdn->a_style] );
if ( bdn->a_style == ACL_STYLE_LEVEL ) {
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), "{%d}", bdn->a_level );
if ( n > 0 ) {
ptr = acl_safe_strncopy( ptr, buf, n );
} /* else ? */
}
if ( bdn->a_expand ) {
ptr = acl_safe_strcopy( ptr, ",expand" );
}
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &bdn->a_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
return ptr;
}
static char *
access2text( Access *b, char *ptr )
{
char maskbuf[ACCESSMASK_MAXLEN];
ptr = acl_safe_strcopy( ptr, "\tby" );
if ( !BER_BVISEMPTY( &b->a_dn_pat ) ) {
ptr = dnaccess2text( &b->a_dn, ptr, 0 );
}
if ( b->a_dn_at ) {
ptr = acl_safe_strcopy( ptr, " dnattr=" );
ptr = acl_safe_strbvcopy( ptr, &b->a_dn_at->ad_cname );
}
if ( !BER_BVISEMPTY( &b->a_realdn_pat ) ) {
ptr = dnaccess2text( &b->a_realdn, ptr, 1 );
}
if ( b->a_realdn_at ) {
ptr = acl_safe_strcopy( ptr, " realdnattr=" );
ptr = acl_safe_strbvcopy( ptr, &b->a_realdn_at->ad_cname );
}
if ( !BER_BVISEMPTY( &b->a_group_pat ) ) {
ptr = acl_safe_strcopy( ptr, " group/" );
ptr = acl_safe_strcopy( ptr, b->a_group_oc ?
b->a_group_oc->soc_cname.bv_val : SLAPD_GROUP_CLASS );
ptr = acl_safe_strcopy( ptr, "/" );
ptr = acl_safe_strcopy( ptr, b->a_group_at ?
b->a_group_at->ad_cname.bv_val : SLAPD_GROUP_ATTR );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_group_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_group_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
if ( !BER_BVISEMPTY( &b->a_peername_pat ) ) {
ptr = acl_safe_strcopy( ptr, " peername" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_peername_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_peername_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
if ( !BER_BVISEMPTY( &b->a_sockname_pat ) ) {
ptr = acl_safe_strcopy( ptr, " sockname" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_sockname_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_sockname_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
if ( !BER_BVISEMPTY( &b->a_domain_pat ) ) {
ptr = acl_safe_strcopy( ptr, " domain" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_domain_style] );
if ( b->a_domain_expand ) {
ptr = acl_safe_strcopy( ptr, ",expand" );
}
ptr = acl_safe_strcopy( ptr, "=" );
ptr = acl_safe_strbvcopy( ptr, &b->a_domain_pat );
}
if ( !BER_BVISEMPTY( &b->a_sockurl_pat ) ) {
ptr = acl_safe_strcopy( ptr, " sockurl" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_sockurl_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_sockurl_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
if ( !BER_BVISEMPTY( &b->a_set_pat ) ) {
ptr = acl_safe_strcopy( ptr, " set" );
ptr = acl_safe_strcopy( ptr, "." );
ptr = acl_safe_strcopy( ptr, style_strings[b->a_set_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &b->a_set_pat );
ptr = acl_safe_strcopy( ptr, "\"" );
}
#ifdef SLAP_DYNACL
if ( b->a_dynacl ) {
slap_dynacl_t *da;
for ( da = b->a_dynacl; da; da = da->da_next ) {
if ( da->da_unparse ) {
struct berval bv = BER_BVNULL;
(void)( *da->da_unparse )( da->da_private, &bv );
assert( !BER_BVISNULL( &bv ) );
ptr = acl_safe_strbvcopy( ptr, &bv );
ch_free( bv.bv_val );
}
}
}
#endif /* SLAP_DYNACL */
/* Security Strength Factors */
if ( b->a_authz.sai_ssf ) {
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), " ssf=%u",
b->a_authz.sai_ssf );
ptr = acl_safe_strncopy( ptr, buf, n );
}
if ( b->a_authz.sai_transport_ssf ) {
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), " transport_ssf=%u",
b->a_authz.sai_transport_ssf );
ptr = acl_safe_strncopy( ptr, buf, n );
}
if ( b->a_authz.sai_tls_ssf ) {
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), " tls_ssf=%u",
b->a_authz.sai_tls_ssf );
ptr = acl_safe_strncopy( ptr, buf, n );
}
if ( b->a_authz.sai_sasl_ssf ) {
char buf[SLAP_TEXT_BUFLEN];
int n = snprintf( buf, sizeof(buf), " sasl_ssf=%u",
b->a_authz.sai_sasl_ssf );
ptr = acl_safe_strncopy( ptr, buf, n );
}
ptr = acl_safe_strcopy( ptr, " " );
if ( b->a_dn_self ) {
ptr = acl_safe_strcopy( ptr, "self" );
} else if ( b->a_realdn_self ) {
ptr = acl_safe_strcopy( ptr, "realself" );
}
ptr = acl_safe_strcopy( ptr, accessmask2str( b->a_access_mask, maskbuf, 0 ));
if ( !maskbuf[0] ) ptr--;
if( b->a_type == ACL_BREAK ) {
ptr = acl_safe_strcopy( ptr, " break" );
} else if( b->a_type == ACL_CONTINUE ) {
ptr = acl_safe_strcopy( ptr, " continue" );
} else if( b->a_type != ACL_STOP ) {
ptr = acl_safe_strcopy( ptr, " unknown-control" );
} else {
if ( !maskbuf[0] ) ptr = acl_safe_strcopy( ptr, " stop" );
}
ptr = acl_safe_strcopy( ptr, "\n" );
return ptr;
}
void
acl_unparse( AccessControl *a, struct berval *bv )
{
Access *b;
char *ptr;
int to = 0;
if ( BER_BVISNULL( &aclbuf ) ) {
aclbuf.bv_val = ch_malloc( ACLBUF_CHUNKSIZE );
aclbuf.bv_len = ACLBUF_CHUNKSIZE;
}
bv->bv_len = 0;
ptr = aclbuf.bv_val;
ptr = acl_safe_strcopy( ptr, "to" );
if ( !BER_BVISNULL( &a->acl_dn_pat ) ) {
to++;
ptr = acl_safe_strcopy( ptr, " dn." );
if ( a->acl_dn_style == ACL_STYLE_BASE )
ptr = acl_safe_strcopy( ptr, style_base );
else
ptr = acl_safe_strcopy( ptr, style_strings[a->acl_dn_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &a->acl_dn_pat );
ptr = acl_safe_strcopy( ptr, "\"\n" );
}
if ( a->acl_filter != NULL ) {
struct berval fbv = BER_BVNULL;
to++;
filter2bv( a->acl_filter, &fbv );
ptr = acl_safe_strcopy( ptr, " filter=\"" );
ptr = acl_safe_strbvcopy( ptr, &fbv );
ptr = acl_safe_strcopy( ptr, "\"\n" );
ch_free( fbv.bv_val );
}
if ( a->acl_attrs != NULL ) {
int first = 1;
AttributeName *an;
to++;
ptr = acl_safe_strcopy( ptr, " attrs=" );
for ( an = a->acl_attrs; an && !BER_BVISNULL( &an->an_name ); an++ ) {
if ( ! first ) ptr = acl_safe_strcopy( ptr, ",");
if (an->an_oc) {
ptr = acl_safe_strcopy( ptr, ( an->an_flags & SLAP_AN_OCEXCLUDE ) ? "!" : "@" );
ptr = acl_safe_strbvcopy( ptr, &an->an_oc->soc_cname );
} else {
ptr = acl_safe_strbvcopy( ptr, &an->an_name );
}
first = 0;
}
ptr = acl_safe_strcopy( ptr, "\n" );
}
if ( !BER_BVISNULL( &a->acl_attrval ) ) {
to++;
ptr = acl_safe_strcopy( ptr, " val." );
if ( a->acl_attrval_style == ACL_STYLE_BASE &&
a->acl_attrs[0].an_desc->ad_type->sat_syntax ==
slap_schema.si_syn_distinguishedName )
ptr = acl_safe_strcopy( ptr, style_base );
else
ptr = acl_safe_strcopy( ptr, style_strings[a->acl_attrval_style] );
ptr = acl_safe_strcopy( ptr, "=\"" );
ptr = acl_safe_strbvcopy( ptr, &a->acl_attrval );
ptr = acl_safe_strcopy( ptr, "\"\n" );
}
if ( !to ) {
ptr = acl_safe_strcopy( ptr, " *\n" );
}
for ( b = a->acl_access; b != NULL; b = b->a_next ) {
ptr = access2text( b, ptr );
}
*ptr = '\0';
bv->bv_val = aclbuf.bv_val;
bv->bv_len = ptr - bv->bv_val;
}
#ifdef LDAP_DEBUG
static void
print_acl( Backend *be, AccessControl *a )
{
struct berval bv;
acl_unparse( a, &bv );
fprintf( stderr, "%s ACL: access %s\n",
be == NULL ? "Global" : "Backend", bv.bv_val );
}
#endif /* LDAP_DEBUG */
Reference in New Issue View Git Blame Copy Permalink