mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
68b1bbb89d
Use typedefs for all backend functions, to minimize work in future API updates. (back-*/external.h will never need updating in the future.)
386 lines
8.6 KiB
C
386 lines
8.6 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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*/
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/* ad.c - routines for dealing with attribute descriptions */
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#include "portable.h"
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#include <stdio.h>
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#include <ac/ctype.h>
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#include <ac/errno.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include <ac/time.h>
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#include "ldap_pvt.h"
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#include "slap.h"
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static int ad_keystring(
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struct berval *bv )
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{
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ber_len_t i;
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if( !AD_CHAR( bv->bv_val[0] ) ) {
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return 1;
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}
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for( i=1; i<bv->bv_len; i++ ) {
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if( !AD_CHAR( bv->bv_val[i] ) ) {
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return 1;
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}
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}
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return 0;
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}
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void ad_destroy( void *in )
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{
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AttributeDescription *ad = in, *n;
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for (;ad;ad = n) {
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n = ad->ad_next;
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ldap_memfree(ad);
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}
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}
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/* Is there an AttributeDescription for this type that uses this language? */
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AttributeDescription * ad_find_lang(
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AttributeType *type,
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struct berval *lang )
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{
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AttributeDescription *ad;
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ldap_pvt_thread_mutex_lock( &type->sat_ad_mutex );
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for (ad = type->sat_ad; ad; ad=ad->ad_next)
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{
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if (ad->ad_lang.bv_len == lang->bv_len &&
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!strcasecmp(ad->ad_lang.bv_val, lang->bv_val))
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break;
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}
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ldap_pvt_thread_mutex_unlock( &type->sat_ad_mutex );
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return ad;
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}
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int slap_str2ad(
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const char *str,
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AttributeDescription **ad,
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const char **text )
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{
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struct berval bv;
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bv.bv_val = (char *) str;
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bv.bv_len = strlen( str );
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return slap_bv2ad( &bv, ad, text );
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}
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int slap_bv2ad(
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struct berval *bv,
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AttributeDescription **ad,
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const char **text )
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{
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int rtn = LDAP_UNDEFINED_TYPE;
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int i;
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AttributeDescription desc, *d2;
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char *name, *options;
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assert( ad != NULL );
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assert( *ad == NULL ); /* temporary */
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if( bv == NULL || bv->bv_len == 0 ) {
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*text = "empty attribute description";
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return rtn;
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}
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/* make sure description is IA5 */
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if( ad_keystring( bv ) ) {
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*text = "attribute description contains inappropriate characters";
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return rtn;
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}
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/* find valid base attribute type; parse in place */
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desc.ad_cname = *bv;
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name = bv->bv_val;
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options = strchr(name, ';');
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if (options != NULL)
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desc.ad_cname.bv_len = options - name;
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desc.ad_type = at_bvfind( &desc.ad_cname );
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if( desc.ad_type == NULL ) {
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*text = "attribute type undefined";
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return rtn;
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}
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desc.ad_flags = SLAP_DESC_NONE;
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desc.ad_lang.bv_len = 0;
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desc.ad_lang.bv_val = NULL;
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/* parse options in place */
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for( ; options != NULL; ) {
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name = options+1;
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options = strchr( name, ';' );
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if ( options != NULL )
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i = options - name;
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else
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i = bv->bv_len - (name - bv->bv_val);
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if( i == sizeof("binary")-1 && strncasecmp( name, "binary", i) == 0 ) {
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if( slap_ad_is_binary( &desc ) ) {
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*text = "option \"binary\" specified multiple times";
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goto done;
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}
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if( !slap_syntax_is_binary( desc.ad_type->sat_syntax )) {
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/* not stored in binary, disallow option */
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*text = "option \"binary\" with type not supported";
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goto done;
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}
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desc.ad_flags |= SLAP_DESC_BINARY;
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} else if ( i >= sizeof("lang-") && strncasecmp( name, "lang-",
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sizeof("lang-")-1 ) == 0)
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{
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if( desc.ad_lang.bv_len != 0 ) {
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*text = "multiple language tag options specified";
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goto done;
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}
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desc.ad_lang.bv_val = name;
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desc.ad_lang.bv_len = i;
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} else {
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*text = "unrecognized option";
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goto done;
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}
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}
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ldap_pvt_thread_mutex_lock( &desc.ad_type->sat_ad_mutex );
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/* see if a matching description is already cached */
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for (d2 = desc.ad_type->sat_ad; d2; d2=d2->ad_next) {
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if (d2->ad_flags != desc.ad_flags)
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continue;
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if (d2->ad_lang.bv_len != desc.ad_lang.bv_len)
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continue;
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if (d2->ad_lang.bv_len == 0)
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break;
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if (strncasecmp(d2->ad_lang.bv_val, desc.ad_lang.bv_val,
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desc.ad_lang.bv_len) == 0)
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break;
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}
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/* Not found, add new one */
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while (d2 == NULL) {
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int dlen = 0;
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/* Allocate a single contiguous block. If there are no
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* options, we just need space for the AttrDesc structure.
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* Otherwise, we need to tack on the full name length +
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* options length.
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*/
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i = sizeof(AttributeDescription);
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if (desc.ad_lang.bv_len || desc.ad_flags != SLAP_DESC_NONE) {
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if (desc.ad_lang.bv_len)
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dlen = desc.ad_lang.bv_len+1;
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dlen += desc.ad_type->sat_cname.bv_len+1;
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if( slap_ad_is_binary( &desc ) ) {
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dlen += sizeof("binary");
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}
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}
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d2 = ch_malloc(i + dlen);
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d2->ad_type = desc.ad_type;
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d2->ad_flags = desc.ad_flags;
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d2->ad_cname.bv_len = desc.ad_cname.bv_len;
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d2->ad_lang.bv_len = desc.ad_lang.bv_len;
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if (dlen == 0) {
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d2->ad_cname.bv_val = d2->ad_type->sat_cname.bv_val;
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d2->ad_lang.bv_val = NULL;
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} else {
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d2->ad_cname.bv_val = (char *)(d2+1);
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strcpy(d2->ad_cname.bv_val, d2->ad_type->sat_cname.bv_val);
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if( slap_ad_is_binary( &desc ) ) {
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strcpy(d2->ad_cname.bv_val+d2->ad_cname.bv_len,
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";binary");
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d2->ad_cname.bv_len += sizeof("binary");
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}
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if( d2->ad_lang.bv_len ) {
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d2->ad_cname.bv_val[d2->ad_cname.bv_len++]=';';
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d2->ad_lang.bv_val = d2->ad_cname.bv_val+
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d2->ad_cname.bv_len;
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strncpy(d2->ad_lang.bv_val,desc.ad_lang.bv_val,
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d2->ad_lang.bv_len);
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d2->ad_lang.bv_val[d2->ad_lang.bv_len] = '\0';
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ldap_pvt_str2lower(d2->ad_lang.bv_val);
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d2->ad_cname.bv_len += d2->ad_lang.bv_len;
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}
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}
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/* Add new desc to list. We always want the bare Desc with
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* no options to stay at the head of the list, assuming
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* that one will be used most frequently.
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*/
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if (desc.ad_type->sat_ad == NULL || dlen == 0) {
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d2->ad_next = desc.ad_type->sat_ad;
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desc.ad_type->sat_ad = d2;
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} else {
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d2->ad_next = desc.ad_type->sat_ad->ad_next;
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desc.ad_type->sat_ad->ad_next = d2;
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}
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}
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ldap_pvt_thread_mutex_unlock( &desc.ad_type->sat_ad_mutex );
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if( *ad == NULL ) {
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*ad = d2;
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} else {
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**ad = *d2;
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}
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rtn = LDAP_SUCCESS;
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done:
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return rtn;
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}
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int is_ad_subtype(
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AttributeDescription *sub,
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AttributeDescription *super
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)
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{
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if( !is_at_subtype( sub->ad_type, super->ad_type ) ) {
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return 0;
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}
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if( super->ad_flags && ( super->ad_flags != sub->ad_flags )) {
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return 0;
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}
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if( super->ad_lang.bv_len && (sub->ad_lang.bv_len !=
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super->ad_lang.bv_len || strcmp( super->ad_lang.bv_val,
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sub->ad_lang.bv_val)))
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{
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return 0;
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}
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return 1;
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}
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int ad_inlist(
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AttributeDescription *desc,
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struct berval **attrs )
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{
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int i;
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for( i=0; attrs[i] != NULL; i++ ) {
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ObjectClass *oc;
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AttributeDescription *ad = NULL;
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const char *text;
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int rc;
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rc = slap_bv2ad( attrs[i], &ad, &text );
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if( rc == LDAP_SUCCESS ) {
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rc = is_ad_subtype( desc, ad );
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if( rc ) return 1;
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continue;
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}
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/*
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* EXTENSION: see if requested description is an object class
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* if so, return attributes which the class requires/allows
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*/
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oc = oc_bvfind( attrs[i] );
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if( oc != NULL ) {
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if ( oc == slap_schema.si_oc_extensibleObject ) {
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/* extensibleObject allows the return of anything */
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return 1;
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}
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if( oc->soc_required ) {
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/* allow return of required attributes */
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int i;
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for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
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rc = is_at_subtype( desc->ad_type,
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oc->soc_allowed[i] );
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if( rc ) return 1;
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}
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}
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if( oc->soc_allowed ) {
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/* allow return of allowed attributes */
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int i;
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for ( i = 0; oc->soc_allowed[i] != NULL; i++ ) {
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rc = is_at_subtype( desc->ad_type,
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oc->soc_allowed[i] );
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if( rc ) return 1;
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}
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}
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}
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}
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return 0;
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}
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int slap_str2undef_ad(
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const char *str,
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AttributeDescription **ad,
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const char **text )
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{
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struct berval bv;
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bv.bv_val = (char *) str;
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bv.bv_len = strlen( str );
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return slap_bv2undef_ad( &bv, ad, text );
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}
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int slap_bv2undef_ad(
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struct berval *bv,
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AttributeDescription **ad,
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const char **text )
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{
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AttributeDescription *desc;
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assert( ad != NULL );
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if( bv == NULL || bv->bv_len == 0 ) {
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*text = "empty attribute description";
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return LDAP_UNDEFINED_TYPE;
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}
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/* make sure description is IA5 */
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if( ad_keystring( bv ) ) {
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*text = "attribute description contains inappropriate characters";
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return LDAP_UNDEFINED_TYPE;
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}
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for (desc = slap_schema.si_at_undefined->sat_ad; desc;
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desc=desc->ad_next)
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if (desc->ad_cname.bv_len == bv->bv_len &&
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!strcasecmp(desc->ad_cname.bv_val, bv->bv_val))
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break;
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if (!desc) {
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desc = ch_malloc(sizeof(AttributeDescription) +
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bv->bv_len + 1);
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desc->ad_flags = SLAP_DESC_NONE;
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desc->ad_lang.bv_val = NULL;
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desc->ad_lang.bv_len = 0;
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desc->ad_cname.bv_len = bv->bv_len;
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desc->ad_cname.bv_val = (char *)(desc+1);
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strcpy(desc->ad_cname.bv_val, bv->bv_val);
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/* canonical to upper case */
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ldap_pvt_str2upper( desc->ad_cname.bv_val );
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desc->ad_type = slap_schema.si_at_undefined;
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desc->ad_next = desc->ad_type->sat_ad;
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desc->ad_type->sat_ad = desc;
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}
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if (!*ad)
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*ad = desc;
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else
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**ad = *desc;
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return LDAP_SUCCESS;
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}
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