/* acl.c - routines to parse and check acl's */
+#include "portable.h"
+
#include <stdio.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#ifdef sunos5
-#include "regexpr.h"
-#else
-#include "regex.h"
-#endif
-#include "slap.h"
-extern Attribute *attr_find();
-extern char *re_comp();
-extern struct acl *global_acl;
-extern int global_default_access;
-extern char *access2str();
-extern char *dn_normalize_case();
+#include <ac/regex.h>
+#include <ac/socket.h>
+#include <ac/string.h>
-int acl_access_allowed();
-int access_allowed();
-struct acl *acl_get_applicable();
+#include "slap.h"
-static int regex_matches();
+static int regex_matches(char *pat, char *str, char *buf, regmatch_t *matches);
+static void string_expand(char *newbuf, int bufsiz, char *pattern,
+ char *match, regmatch_t *matches);
-extern pthread_mutex_t regex_mutex;
/*
- * access_allowed - check whether dn is allowed the requested access
+ * access_allowed - check whether op->o_ndn is allowed the requested access
* to entry e, attribute attr, value val. if val is null, access to
* the whole attribute is assumed (all values). this routine finds
* the applicable acl and calls acl_access_allowed() to make the
Entry *e,
char *attr,
struct berval *val,
- char *dn,
int access
)
{
- int rc;
- struct acl *a;
+ int rc;
+ struct acl *a;
+ char *edn;
+
+ regmatch_t matches[MAXREMATCHES];
+ int i;
+ int n;
if ( be == NULL ) {
return( 0 );
}
- a = acl_get_applicable( be, op, e, attr );
- rc = acl_access_allowed( a, be, conn, e, val, op, access );
+ edn = e->e_ndn;
+
+ Debug( LDAP_DEBUG_ACL, "\n=> access_allowed: entry (%s) attr (%s)\n",
+ e->e_dn, attr, 0 );
+
+ /* the lastmod attributes are ignored by ACL checking */
+ if ( strcasecmp( attr, "modifiersname" ) == 0 ||
+ strcasecmp( attr, "modifytimestamp" ) == 0 ||
+ strcasecmp( attr, "creatorsname" ) == 0 ||
+ strcasecmp( attr, "createtimestamp" ) == 0 )
+ {
+ Debug( LDAP_DEBUG_ACL, "LASTMOD attribute: %s access allowed\n",
+ attr, 0, 0 );
+ return(1);
+ }
+
+ memset(matches, 0, sizeof(matches));
+
+ a = acl_get_applicable( be, op, e, attr, MAXREMATCHES, matches );
+
+ if (a) {
+ for (i = 0; i < MAXREMATCHES && matches[i].rm_so > 0; i++) {
+ Debug( LDAP_DEBUG_ARGS, "=> match[%d]: %d %d ", i,
+ (int)matches[i].rm_so, (int)matches[i].rm_eo );
+
+ if( matches[i].rm_so <= matches[0].rm_eo ) {
+ for ( n = matches[i].rm_so; n < matches[i].rm_eo; n++) {
+ Debug( LDAP_DEBUG_ARGS, "%c", edn[n], 0, 0 );
+ }
+ }
+ Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
+ }
+ }
+
+ rc = acl_access_allowed( a, be, conn, e, val, op, access, edn, matches );
+
+ Debug( LDAP_DEBUG_ACL, "\n=> access_allowed: exit (%s) attr (%s)\n",
+ e->e_dn, attr, 0);
return( rc );
}
Backend *be,
Operation *op,
Entry *e,
- char *attr
+ char *attr,
+ int nmatch,
+ regmatch_t *matches
)
{
- int i;
+ int i, j;
struct acl *a;
- char *edn;
+ char *edn;
- Debug( LDAP_DEBUG_ACL, "=> acl_get: entry (%s) attr (%s)\n", e->e_dn,
- attr, 0 );
+ Debug( LDAP_DEBUG_ACL, "\n=> acl_get: entry (%s) attr (%s)\n",
+ e->e_dn, attr, 0 );
- if ( be_isroot( be, op->o_dn ) ) {
+ if ( be_isroot( be, op->o_ndn ) ) {
Debug( LDAP_DEBUG_ACL,
"<= acl_get: no acl applicable to database root\n", 0, 0,
0 );
return( NULL );
}
+ edn = e->e_ndn;
+
+ Debug( LDAP_DEBUG_ARGS, "=> acl_get: edn %s\n", edn, 0, 0 );
+
/* check for a backend-specific acl that matches the entry */
for ( i = 1, a = be->be_acl; a != NULL; a = a->acl_next, i++ ) {
- if ( a->acl_dnpat != NULL ) {
- edn = dn_normalize_case( strdup( e->e_dn ) );
- if ( ! regex_matches( a->acl_dnpat, edn ) ) {
- free( edn );
+ if (a->acl_dnpat != NULL) {
+ Debug( LDAP_DEBUG_TRACE, "=> dnpat: [%d] %s nsub: %d\n",
+ i, a->acl_dnpat, (int) a->acl_dnre.re_nsub);
+
+ if (regexec(&a->acl_dnre, edn, nmatch, matches, 0))
continue;
- }
- free( edn );
+ else
+ Debug( LDAP_DEBUG_TRACE, "=> acl_get:[%d] backend ACL match\n",
+ i, 0, 0);
}
+
if ( a->acl_filter != NULL ) {
- if ( test_filter( NULL, NULL, NULL, e, a->acl_filter )
- != 0 ) {
+ if ( test_filter( NULL, NULL, NULL, e, a->acl_filter ) != 0 ) {
continue;
}
}
+
+ Debug( LDAP_DEBUG_ARGS, "=> acl_get: [%d] check attr %s\n", i, attr, 0);
+
if ( attr == NULL || a->acl_attrs == NULL ||
- charray_inlist( a->acl_attrs, attr ) ) {
- Debug( LDAP_DEBUG_ACL, "<= acl_get: backend acl #%d\n",
- i, e->e_dn, attr );
+ charray_inlist( a->acl_attrs, attr ) )
+ {
+ Debug( LDAP_DEBUG_ACL, "<= acl_get: [%d] backend acl %s attr: %s\n",
+ i, e->e_dn, attr );
return( a );
}
+ matches[0].rm_so = matches[0].rm_eo = -1;
}
/* check for a global acl that matches the entry */
for ( i = 1, a = global_acl; a != NULL; a = a->acl_next, i++ ) {
- if ( a->acl_dnpat != NULL ) {
- edn = dn_normalize_case( strdup( e->e_dn ) );
- if ( ! regex_matches( a->acl_dnpat, edn ) ) {
- free( edn );
+ if (a->acl_dnpat != NULL) {
+ Debug( LDAP_DEBUG_TRACE, "=> dnpat: [%d] %s nsub: %d\n",
+ i, a->acl_dnpat, (int) a->acl_dnre.re_nsub);
+
+ if (regexec(&a->acl_dnre, edn, nmatch, matches, 0)) {
continue;
+ } else {
+ Debug( LDAP_DEBUG_TRACE, "=> acl_get: [%d] global ACL match\n",
+ i, 0, 0);
}
- free( edn );
}
+
if ( a->acl_filter != NULL ) {
- if ( test_filter( NULL, NULL, NULL, e, a->acl_filter )
- != 0 ) {
+ if ( test_filter( NULL, NULL, NULL, e, a->acl_filter ) != 0 ) {
continue;
}
}
- if ( attr == NULL || a->acl_attrs == NULL || charray_inlist(
- a->acl_attrs, attr ) ) {
- Debug( LDAP_DEBUG_ACL, "<= acl_get: global acl #%d\n",
- i, e->e_dn, attr );
+
+ Debug( LDAP_DEBUG_ARGS, "=> acl_get: [%d] check attr\n", i, 0, 0);
+
+ if ( attr == NULL || a->acl_attrs == NULL ||
+ charray_inlist( a->acl_attrs, attr ) )
+ {
+ Debug( LDAP_DEBUG_ACL, "<= acl_get: [%d] global acl %s attr: %s\n",
+ i, e->e_dn, attr );
return( a );
}
+
+ matches[0].rm_so = matches[0].rm_eo = -1;
}
- Debug( LDAP_DEBUG_ACL, "<= acl_get: no match\n", 0, 0, 0 );
+ Debug( LDAP_DEBUG_ACL, "<= acl_get: no match\n", 0, 0, 0 );
return( NULL );
}
Entry *e,
struct berval *val,
Operation *op,
- int access
+ int access,
+ char *edn,
+ regmatch_t *matches
)
{
int i;
- char *edn, *odn;
+ char *odn;
struct access *b;
Attribute *at;
struct berval bv;
int default_access;
- Debug( LDAP_DEBUG_ACL, "=> acl: %s access to value \"%s\" by \"%s\"\n",
- access2str( access ), val ? val->bv_val : "any", op->o_dn ?
- op->o_dn : "" );
+ Debug( LDAP_DEBUG_ACL,
+ "\n=> acl_access_allowed: %s access to entry \"%s\"\n",
+ access2str( access ), e->e_dn, 0 );
+
+ Debug( LDAP_DEBUG_ACL,
+ "\n=> acl_access_allowed: %s access to value \"%s\" by \"%s\"\n",
+ access2str( access ),
+ val ? val->bv_val : "any",
+ op->o_ndn ? op->o_ndn : "" );
- if ( be_isroot( be, op->o_dn ) ) {
- Debug( LDAP_DEBUG_ACL, "<= acl: granted to database root\n",
+ if ( be_isroot( be, op->o_ndn ) ) {
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_access_allowed: granted to database root\n",
0, 0, 0 );
return( 1 );
}
- default_access = be->be_dfltaccess ? be->be_dfltaccess :
- global_default_access;
+ default_access = be->be_dfltaccess ? be->be_dfltaccess : global_default_access;
+
if ( a == NULL ) {
Debug( LDAP_DEBUG_ACL,
- "<= acl: %s by default (no matching to)\n",
+ "<= acl_access_allowed: %s by default (no matching to)\n",
default_access >= access ? "granted" : "denied", 0, 0 );
return( default_access >= access );
}
- odn = NULL;
- if ( op->o_dn != NULL ) {
- odn = dn_normalize_case( strdup( op->o_dn ) );
+ odn = op->o_ndn;
+
+ if ( odn != NULL ) {
bv.bv_val = odn;
bv.bv_len = strlen( odn );
}
+
for ( i = 1, b = a->acl_access; b != NULL; b = b->a_next, i++ ) {
if ( b->a_dnpat != NULL ) {
+ Debug( LDAP_DEBUG_TRACE, "<= check a_dnpat: %s\n",
+ b->a_dnpat, 0, 0);
/*
* if access applies to the entry itself, and the
* user is bound as somebody in the same namespace as
* the entry, OR the given dn matches the dn pattern
*/
- if ( strcasecmp( b->a_dnpat, "self" ) == 0 && op->o_dn
- != NULL && *(op->o_dn) && e->e_dn != NULL ) {
- edn = dn_normalize_case( strdup( e->e_dn ) );
- if ( strcasecmp( edn, op->o_dn ) == 0 ) {
- free( edn );
- if ( odn ) free( odn );
+ if ( strcasecmp( b->a_dnpat, "self" ) == 0 &&
+ op->o_ndn != NULL && *(op->o_ndn) && e->e_dn != NULL )
+ {
+ if ( strcmp( edn, op->o_ndn ) == 0 ) {
Debug( LDAP_DEBUG_ACL,
- "<= acl: matched by clause #%d access %s\n",
+ "<= acl_access_allowed: matched by clause #%d access %s\n",
i, (b->a_access & ~ACL_SELF) >=
access ? "granted" : "denied", 0 );
- return( (b->a_access & ~ACL_SELF)
- >= access );
+ return( (b->a_access & ~ACL_SELF) >= access );
}
- free( edn );
} else {
- if ( regex_matches( b->a_dnpat, odn ) ) {
- if ( odn ) free( odn );
+ if ( regex_matches( b->a_dnpat, odn, edn, matches ) ) {
Debug( LDAP_DEBUG_ACL,
- "<= acl: matched by clause #%d access %s\n",
+ "<= acl_access_allowed: matched by clause #%d access %s\n",
i, (b->a_access & ~ACL_SELF) >= access ?
"granted" : "denied", 0 );
- return( (b->a_access & ~ACL_SELF)
- >= access );
+ return( (b->a_access & ~ACL_SELF) >= access );
}
}
}
if ( b->a_addrpat != NULL ) {
- if ( regex_matches( b->a_addrpat, conn->c_addr ) ) {
- if ( odn ) free( odn );
+ if ( regex_matches( b->a_addrpat, conn->c_addr, edn, matches ) ) {
Debug( LDAP_DEBUG_ACL,
- "<= acl: matched by clause #%d access %s\n",
+ "<= acl_access_allowed: matched by clause #%d access %s\n",
i, (b->a_access & ~ACL_SELF) >= access ?
"granted" : "denied", 0 );
}
}
if ( b->a_domainpat != NULL ) {
- if ( regex_matches( b->a_domainpat, conn->c_domain ) ) {
- if ( odn ) free( odn );
+ Debug( LDAP_DEBUG_ARGS, "<= check a_domainpath: %s\n",
+ b->a_domainpat, 0, 0 );
+ if ( regex_matches( b->a_domainpat, conn->c_domain, edn, matches ) )
+ {
Debug( LDAP_DEBUG_ACL,
- "<= acl: matched by clause #%d access %s\n",
+ "<= acl_access_allowed: matched by clause #%d access %s\n",
i, (b->a_access & ~ACL_SELF) >= access ?
"granted" : "denied", 0 );
return( (b->a_access & ~ACL_SELF) >= access );
}
}
- if ( b->a_dnattr != NULL && op->o_dn != NULL ) {
+ if ( b->a_dnattr != NULL && op->o_ndn != NULL ) {
+ Debug( LDAP_DEBUG_ARGS, "<= check a_dnattr: %s\n",
+ b->a_dnattr, 0, 0);
/* see if asker is listed in dnattr */
- if ( (at = attr_find( e->e_attrs, b->a_dnattr ))
- != NULL && value_find( at->a_vals, &bv,
- at->a_syntax, 3 ) == 0 )
+ if ( (at = attr_find( e->e_attrs, b->a_dnattr )) != NULL &&
+ value_find( at->a_vals, &bv, at->a_syntax, 3 ) == 0 )
{
- if ( (b->a_access & ACL_SELF) && (val == NULL
- || value_cmp( &bv, val, at->a_syntax,
- 2 )) ) {
+ if ( (b->a_access & ACL_SELF) &&
+ (val == NULL || value_cmp( &bv, val, at->a_syntax, 2 )) )
+ {
continue;
}
- if ( odn ) free( odn );
Debug( LDAP_DEBUG_ACL,
- "<= acl: matched by clause #%d access %s\n",
+ "<= acl_acces_allowed: matched by clause #%d access %s\n",
i, (b->a_access & ~ACL_SELF) >= access ?
"granted" : "denied", 0 );
/* asker not listed in dnattr - check for self access */
if ( ! (b->a_access & ACL_SELF) || val == NULL ||
- value_cmp( &bv, val, at->a_syntax, 2 ) != 0 ) {
+ value_cmp( &bv, val, at->a_syntax, 2 ) != 0 )
+ {
continue;
}
- if ( odn ) free( odn );
Debug( LDAP_DEBUG_ACL,
- "<= acl: matched by clause #%d (self) access %s\n",
+ "<= acl_access_allowed: matched by clause #%d (self) access %s\n",
i, (b->a_access & ~ACL_SELF) >= access ? "granted"
: "denied", 0 );
return( (b->a_access & ~ACL_SELF) >= access );
}
+#ifdef SLAPD_ACLGROUPS
+ if ( b->a_group != NULL && op->o_ndn != NULL ) {
+ char buf[1024];
+
+ /* b->a_group is an unexpanded entry name, expanded it should be an
+ * entry with objectclass group* and we test to see if odn is one of
+ * the values in the attribute group
+ */
+ /* see if asker is listed in dnattr */
+ string_expand(buf, sizeof(buf), b->a_group, edn, matches);
+ (void) dn_normalize_case(buf);
+
+ if (backend_group(be, e, buf, odn,
+ b->a_objectclassvalue, b->a_groupattrname) == 0)
+ {
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_access_allowed: matched by clause #%d (group) access granted\n",
+ i, 0, 0 );
+ return( (b->a_access & ~ACL_SELF) >= access );
+ }
+ }
+#endif /* SLAPD_ACLGROUPS */
}
- if ( odn ) free( odn );
- Debug( LDAP_DEBUG_ACL, "<= acl: %s by default (no matching by)\n",
+ Debug( LDAP_DEBUG_ACL,
+ "<= acl_access_allowed: %s by default (no matching by)\n",
default_access >= access ? "granted" : "denied", 0, 0 );
return( default_access >= access );
}
/*
- * acl_check_mods - check access control on the given entry to see if
+ * acl_check_modlist - check access control on the given entry to see if
* it allows the given modifications by the user associated with op.
* returns LDAP_SUCCESS mods allowed ok
* anything else mods not allowed - return is an error
*/
int
-acl_check_mods(
+acl_check_modlist(
Backend *be,
Connection *conn,
Operation *op,
Entry *e,
- LDAPMod *mods
+ LDAPModList *mlist
)
{
int i;
struct acl *a;
-
- for ( ; mods != NULL; mods = mods->mod_next ) {
- if ( strcasecmp( mods->mod_type, "modifiersname" ) == 0 ||
- strcasecmp( mods->mod_type, "modifytimestamp" ) == 0 ) {
+ char *edn = e->e_ndn;
+
+ for ( ; mlist != NULL; mlist = mlist->ml_next ) {
+ regmatch_t matches[MAXREMATCHES];
+
+ /* the lastmod attributes are ignored by ACL checking */
+ if ( strcasecmp( mlist->ml_type, "modifiersname" ) == 0 ||
+ strcasecmp( mlist->ml_type, "modifytimestamp" ) == 0 ||
+ strcasecmp( mlist->ml_type, "creatorsname" ) == 0 ||
+ strcasecmp( mlist->ml_type, "createtimestamp" ) == 0 )
+ {
+ Debug( LDAP_DEBUG_ACL, "LASTMOD attribute: %s access allowed\n",
+ mlist->ml_type, 0, 0 );
continue;
}
- a = acl_get_applicable( be, op, e, mods->mod_type );
+ a = acl_get_applicable( be, op, e, mlist->ml_type,
+ MAXREMATCHES, matches );
- switch ( mods->mod_op & ~LDAP_MOD_BVALUES ) {
+ switch ( mlist->ml_op & ~LDAP_MOD_BVALUES ) {
case LDAP_MOD_REPLACE:
case LDAP_MOD_ADD:
- if ( mods->mod_bvalues == NULL ) {
+ if ( mlist->ml_bvalues == NULL ) {
break;
}
- for ( i = 0; mods->mod_bvalues[i] != NULL; i++ ) {
- if ( ! acl_access_allowed( a, be, conn, e,
- mods->mod_bvalues[i], op, ACL_WRITE ) ) {
+ for ( i = 0; mlist->ml_bvalues[i] != NULL; i++ ) {
+ if ( ! acl_access_allowed( a, be, conn, e, mlist->ml_bvalues[i],
+ op, ACL_WRITE, edn, matches) )
+ {
return( LDAP_INSUFFICIENT_ACCESS );
}
}
break;
case LDAP_MOD_DELETE:
- if ( mods->mod_bvalues == NULL ) {
+ if ( mlist->ml_bvalues == NULL ) {
if ( ! acl_access_allowed( a, be, conn, e,
- NULL, op, ACL_WRITE ) ) {
+ NULL, op, ACL_WRITE, edn, matches) )
+ {
return( LDAP_INSUFFICIENT_ACCESS );
}
break;
}
- for ( i = 0; mods->mod_bvalues[i] != NULL; i++ ) {
- if ( ! acl_access_allowed( a, be, conn, e,
- mods->mod_bvalues[i], op, ACL_WRITE ) ) {
+ for ( i = 0; mlist->ml_bvalues[i] != NULL; i++ ) {
+ if ( ! acl_access_allowed( a, be, conn, e, mlist->ml_bvalues[i],
+ op, ACL_WRITE, edn, matches) )
+ {
return( LDAP_INSUFFICIENT_ACCESS );
}
}
return( LDAP_SUCCESS );
}
-#ifdef sunos5
-
-static int
-regex_matches( char *pat, char *str )
+static void
+string_expand(
+ char *newbuf,
+ int bufsiz,
+ char *pat,
+ char *match,
+ regmatch_t *matches)
{
- char *e;
- int rc;
-
- if ( (e = compile( pat, NULL, NULL )) == NULL ) {
- Debug( LDAP_DEBUG_ANY,
- "compile( \"%s\", \"%s\") failed\n", pat, str, 0 );
- return( 0 );
+ int size;
+ char *sp;
+ char *dp;
+ int flag;
+
+ size = 0;
+ newbuf[0] = '\0';
+
+ flag = 0;
+ for ( dp = newbuf, sp = pat; size < bufsiz && *sp ; sp++) {
+ /* did we previously see a $ */
+ if (flag) {
+ if (*sp == '$') {
+ *dp++ = '$';
+ size++;
+ } else if (*sp >= '0' && *sp <= '9' ) {
+ int n;
+ int i;
+ char *ep;
+ int l;
+
+ n = *sp - '0';
+ *dp = '\0';
+ i = matches[n].rm_so;
+ l = matches[n].rm_eo;
+ for ( ; size < 512 && i < l; size++, i++ ) {
+ *dp++ = match[i];
+ size++;
+ }
+ *dp = '\0';
+ }
+ flag = 0;
+ } else {
+ if (*sp == '$') {
+ flag = 1;
+ } else {
+ *dp++ = *sp;
+ size++;
+ }
+ }
}
- rc = step( str ? str : "", e );
- free( e );
+ *dp = '\0';
- return( rc );
+ Debug( LDAP_DEBUG_TRACE, "=> string_expand: pattern: %s\n", pat, 0, 0 );
+ Debug( LDAP_DEBUG_TRACE, "=> string_expand: expanded: %s\n", newbuf, 0, 0 );
}
-#else /* sunos5 */
-
static int
-regex_matches( char *pat, char *str )
+regex_matches(
+ char *pat, /* pattern to expand and match against */
+ char *str, /* string to match against pattern */
+ char *buf, /* buffer with $N expansion variables */
+ regmatch_t *matches /* offsets in buffer for $N expansion variables */
+)
{
- char *e;
+ regex_t re;
+ char newbuf[512];
int rc;
- pthread_mutex_lock( ®ex_mutex );
- if ( (e = re_comp( pat )) != NULL ) {
- Debug( LDAP_DEBUG_ANY,
- "re_comp( \"%s\", \"%s\") failed because (%s)\n", pat, str,
- e );
- pthread_mutex_unlock( ®ex_mutex );
+ string_expand(newbuf, sizeof(newbuf), pat, buf, matches);
+ if (( rc = regcomp(&re, newbuf, REG_EXTENDED|REG_ICASE))) {
+ char error[512];
+ regerror(rc, &re, error, sizeof(error));
+
+ Debug( LDAP_DEBUG_TRACE,
+ "compile( \"%s\", \"%s\") failed %s\n",
+ pat, str, error );
return( 0 );
}
- rc = re_exec( str ? str : "" );
- pthread_mutex_unlock( ®ex_mutex );
- return( rc == 1 );
+ rc = regexec(&re, str, 0, NULL, 0);
+ regfree( &re );
+
+ Debug( LDAP_DEBUG_TRACE,
+ "=> regex_matches: string: %s\n", str, 0, 0 );
+ Debug( LDAP_DEBUG_TRACE,
+ "=> regex_matches: rc: %d %s\n",
+ rc, !rc ? "matches" : "no matches", 0 );
+ return( !rc );
}
-#endif /* sunos5 */
projects / openldap / blobdiff