--- /dev/null
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+/* ad.c - routines for dealing with attribute descriptions */
+
+#include "portable.h"
+
+#include <stdio.h>
+
+#include <ac/ctype.h>
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/time.h>
+
+#include "ldap_pvt.h"
+#include "slap.h"
+
+static int ad_keystring(
+ struct berval *bv )
+{
+ ber_len_t i;
+
+ if( !AD_CHAR( bv->bv_val[0] ) ) {
+ return 1;
+ }
+
+ for( i=1; i<bv->bv_len; i++ ) {
+ if( !AD_CHAR( bv->bv_val[i] ) ) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+void ad_destroy( AttributeDescription *ad )
+{
+ AttributeDescription *n;
+
+ for (; ad != NULL; ad = n) {
+ n = ad->ad_next;
+ ldap_memfree( ad );
+ }
+}
+
+/* Is there an AttributeDescription for this type that uses this language? */
+AttributeDescription * ad_find_lang(
+ AttributeType *type,
+ struct berval *lang )
+{
+ AttributeDescription *ad;
+
+ ldap_pvt_thread_mutex_lock( &type->sat_ad_mutex );
+ for (ad = type->sat_ad; ad; ad=ad->ad_next)
+ {
+ if (ad->ad_lang.bv_len == lang->bv_len &&
+ !strcasecmp(ad->ad_lang.bv_val, lang->bv_val))
+ break;
+ }
+ ldap_pvt_thread_mutex_unlock( &type->sat_ad_mutex );
+ return ad;
+}
+
+int slap_str2ad(
+ const char *str,
+ AttributeDescription **ad,
+ const char **text )
+{
+ struct berval bv;
+ bv.bv_val = (char *) str;
+ bv.bv_len = strlen( str );
+
+ return slap_bv2ad( &bv, ad, text );
+}
+
+static char *strchrlen(
+ const char *p,
+ const char ch,
+ int *len )
+{
+ int i;
+
+ for( i=0; p[i]; i++ ) {
+ if( p[i] == ch ) {
+ *len = i;
+ return (char *) &p[i];
+ }
+ }
+
+ *len = i;
+ return NULL;
+}
+
+int slap_bv2ad(
+ struct berval *bv,
+ AttributeDescription **ad,
+ const char **text )
+{
+ int rtn = LDAP_UNDEFINED_TYPE;
+ AttributeDescription desc, *d2;
+ char *name, *options;
+ char *opt, *next;
+ int nlang;
+ int langlen;
+
+ /* hardcoded limits for speed */
+#define MAX_LANG_OPTIONS 128
+ struct berval langs[MAX_LANG_OPTIONS+1];
+#define MAX_LANG_LEN 1024
+ char langbuf[MAX_LANG_LEN];
+
+ assert( ad != NULL );
+ assert( *ad == NULL ); /* temporary */
+
+ if( bv == NULL || bv->bv_len == 0 ) {
+ *text = "empty attribute description";
+ return rtn;
+ }
+
+ /* make sure description is IA5 */
+ if( ad_keystring( bv ) ) {
+ *text = "attribute description contains inappropriate characters";
+ return rtn;
+ }
+
+ /* find valid base attribute type; parse in place */
+ memset( &desc, 0, sizeof( desc ));
+ desc.ad_cname = *bv;
+ name = bv->bv_val;
+ options = strchr(name, ';');
+ if( options != NULL ) {
+ desc.ad_cname.bv_len = options - name;
+ }
+ desc.ad_type = at_bvfind( &desc.ad_cname );
+ if( desc.ad_type == NULL ) {
+ *text = "attribute type undefined";
+ return rtn;
+ }
+
+ if( is_at_operational( desc.ad_type ) && options != NULL ) {
+ *text = "operational attribute with options undefined";
+ return rtn;
+ }
+
+ /*
+ * parse options in place
+ */
+ nlang = 0;
+ memset( langs, 0, sizeof( langs ));
+ langlen = 0;
+
+ for( opt=options; opt != NULL; opt=next ) {
+ int optlen;
+ opt++;
+ next = strchrlen( opt, ';', &optlen );
+
+ if( optlen == 0 ) {
+ *text = "zero length option is invalid";
+ return rtn;
+
+ } else if ( optlen == sizeof("binary")-1 &&
+ strncasecmp( opt, "binary", sizeof("binary")-1 ) == 0 )
+ {
+ /* binary option */
+ if( slap_ad_is_binary( &desc ) ) {
+ *text = "option \"binary\" specified multiple times";
+ return rtn;
+ }
+
+ if( !slap_syntax_is_binary( desc.ad_type->sat_syntax )) {
+ /* not stored in binary, disallow option */
+ *text = "option \"binary\" not supported with type";
+ return rtn;
+ }
+
+ desc.ad_flags |= SLAP_DESC_BINARY;
+ continue;
+
+ } else if ( optlen >= sizeof("lang-")-1 &&
+ strncasecmp( opt, "lang-", sizeof("lang-")-1 ) == 0 )
+ {
+ int i;
+
+ if( opt[optlen-1] == '-' ) {
+ desc.ad_flags |= SLAP_DESC_LANG_RANGE;
+ }
+
+ if( nlang >= MAX_LANG_OPTIONS ) {
+ *text = "too many language options";
+ return rtn;
+ }
+
+ /*
+ * tags should be presented in sorted order,
+ * so run the array in reverse.
+ */
+ for( i=nlang-1; i>=0; i-- ) {
+ int rc;
+
+ rc = strncasecmp( opt, langs[i].bv_val,
+ (unsigned) optlen < langs[i].bv_len
+ ? optlen : langs[i].bv_len );
+
+ if( rc == 0 && (unsigned)optlen == langs[i].bv_len ) {
+ /* duplicate (ignore) */
+ goto done;
+
+ } else if ( rc > 0 ||
+ ( rc == 0 && (unsigned)optlen > langs[i].bv_len ))
+ {
+ AC_MEMCPY( &langs[i+1], &langs[i],
+ (nlang-i)*sizeof(struct berval) );
+ langs[i].bv_val = opt;
+ langs[i].bv_len = optlen;
+ goto done;
+ }
+ }
+
+ if( nlang ) {
+ AC_MEMCPY( &langs[1], &langs[0],
+ nlang*sizeof(struct berval) );
+ }
+ langs[0].bv_val = opt;
+ langs[0].bv_len = optlen;
+
+done:;
+ langlen += optlen + 1;
+ nlang++;
+
+ } else {
+ *text = "unrecognized option";
+ return rtn;
+ }
+ }
+
+ if( nlang > 0 ) {
+ int i;
+
+ if( langlen > MAX_LANG_LEN ) {
+ *text = "language options too long";
+ return rtn;
+ }
+
+ desc.ad_lang.bv_val = langbuf;
+ langlen = 0;
+
+ for( i=0; i<nlang; i++ ) {
+ AC_MEMCPY( &desc.ad_lang.bv_val[langlen],
+ langs[i].bv_val, langs[i].bv_len );
+
+ langlen += langs[i].bv_len;
+ desc.ad_lang.bv_val[langlen++] = ';';
+ }
+
+ desc.ad_lang.bv_val[--langlen] = '\0';
+ desc.ad_lang.bv_len = langlen;
+ }
+
+ /* see if a matching description is already cached */
+ for (d2 = desc.ad_type->sat_ad; d2; d2=d2->ad_next) {
+ if( d2->ad_flags != desc.ad_flags ) {
+ continue;
+ }
+ if( d2->ad_lang.bv_len != desc.ad_lang.bv_len ) {
+ continue;
+ }
+ if( d2->ad_lang.bv_len == 0 ) {
+ break;
+ }
+ if( strncasecmp( d2->ad_lang.bv_val, desc.ad_lang.bv_val,
+ desc.ad_lang.bv_len ) == 0 )
+ {
+ break;
+ }
+ }
+
+ /* Not found, add new one */
+ while (d2 == NULL) {
+ size_t dlen = 0;
+ ldap_pvt_thread_mutex_lock( &desc.ad_type->sat_ad_mutex );
+ /* check again now that we've locked */
+ for (d2 = desc.ad_type->sat_ad; d2; d2=d2->ad_next) {
+ if (d2->ad_flags != desc.ad_flags)
+ continue;
+ if (d2->ad_lang.bv_len != desc.ad_lang.bv_len)
+ continue;
+ if (d2->ad_lang.bv_len == 0)
+ break;
+ if (strncasecmp(d2->ad_lang.bv_val, desc.ad_lang.bv_val,
+ desc.ad_lang.bv_len) == 0)
+ break;
+ }
+ if (d2) {
+ ldap_pvt_thread_mutex_unlock( &desc.ad_type->sat_ad_mutex );
+ break;
+ }
+
+ /* Allocate a single contiguous block. If there are no
+ * options, we just need space for the AttrDesc structure.
+ * Otherwise, we need to tack on the full name length +
+ * options length.
+ */
+ if (desc.ad_lang.bv_len || desc.ad_flags != SLAP_DESC_NONE) {
+ dlen = desc.ad_type->sat_cname.bv_len;
+ if (desc.ad_lang.bv_len) {
+ dlen += 1+desc.ad_lang.bv_len;
+ }
+ if( slap_ad_is_binary( &desc ) ) {
+ dlen += sizeof(";binary")-1;
+ }
+ }
+
+ d2 = ch_malloc(sizeof(AttributeDescription) + dlen + 1);
+ d2->ad_type = desc.ad_type;
+ d2->ad_flags = desc.ad_flags;
+ d2->ad_cname.bv_len = desc.ad_type->sat_cname.bv_len;
+ d2->ad_lang.bv_len = desc.ad_lang.bv_len;
+
+ if (dlen == 0) {
+ d2->ad_cname.bv_val = d2->ad_type->sat_cname.bv_val;
+ d2->ad_lang.bv_val = NULL;
+ } else {
+ d2->ad_cname.bv_val = (char *)(d2+1);
+ strcpy(d2->ad_cname.bv_val, d2->ad_type->sat_cname.bv_val);
+ if( slap_ad_is_binary( &desc ) ) {
+ strcpy(d2->ad_cname.bv_val+d2->ad_cname.bv_len,
+ ";binary");
+ d2->ad_cname.bv_len += sizeof(";binary")-1;
+ }
+ if( d2->ad_lang.bv_len ) {
+ d2->ad_cname.bv_val[d2->ad_cname.bv_len++]=';';
+ d2->ad_lang.bv_val = d2->ad_cname.bv_val+
+ d2->ad_cname.bv_len;
+ strncpy(d2->ad_lang.bv_val,desc.ad_lang.bv_val,
+ d2->ad_lang.bv_len);
+ d2->ad_lang.bv_val[d2->ad_lang.bv_len] = '\0';
+ ldap_pvt_str2lower(d2->ad_lang.bv_val);
+ d2->ad_cname.bv_len += d2->ad_lang.bv_len;
+ }
+ }
+ /* Add new desc to list. We always want the bare Desc with
+ * no options to stay at the head of the list, assuming
+ * that one will be used most frequently.
+ */
+ if (desc.ad_type->sat_ad == NULL || dlen == 0) {
+ d2->ad_next = desc.ad_type->sat_ad;
+ desc.ad_type->sat_ad = d2;
+ } else {
+ d2->ad_next = desc.ad_type->sat_ad->ad_next;
+ desc.ad_type->sat_ad->ad_next = d2;
+ }
+ ldap_pvt_thread_mutex_unlock( &desc.ad_type->sat_ad_mutex );
+ }
+
+ if( *ad == NULL ) {
+ *ad = d2;
+ } else {
+ **ad = *d2;
+ }
+
+ return LDAP_SUCCESS;
+}
+
+static int is_ad_sublang(
+ const char *sublang,
+ const char *suplang )
+{
+ const char *supp, *supdelimp;
+ const char *subp, *subdelimp;
+ int suplen, sublen;
+
+ if( suplang == NULL ) return 1;
+ if( sublang == NULL ) return 0;
+
+ for( supp=suplang ; supp; supp=supdelimp ) {
+ supdelimp = strchrlen( supp, ';', &suplen );
+ if( supdelimp ) supdelimp++;
+
+ for( subp=sublang ; subp; subp=subdelimp ) {
+ subdelimp = strchrlen( subp, ';', &sublen );
+ if( subdelimp ) subdelimp++;
+
+ if ((( suplen < sublen && supp[suplen-1] == '-' ) ||
+ suplen == sublen ) && strncmp( supp, subp, suplen ) == 0 )
+ {
+ goto match;
+ }
+ }
+
+ return 0;
+match:;
+ }
+ return 1;
+}
+
+int is_ad_subtype(
+ AttributeDescription *sub,
+ AttributeDescription *super
+)
+{
+ int lr;
+
+ if( !is_at_subtype( sub->ad_type, super->ad_type ) ) {
+ return 0;
+ }
+
+ /* ensure sub does support all flags of super */
+ lr = sub->ad_lang.bv_len ? SLAP_DESC_LANG_RANGE : 0;
+ if(( super->ad_flags & ( sub->ad_flags | lr )) != super->ad_flags ) {
+ return 0;
+ }
+
+ /* check for language tags */
+ if ( !is_ad_sublang( sub->ad_lang.bv_val, super->ad_lang.bv_val )) {
+ return 0;
+ }
+
+ return 1;
+}
+
+int ad_inlist(
+ AttributeDescription *desc,
+ AttributeName *attrs )
+{
+ if (! attrs ) return 0;
+
+ for( ; attrs->an_name.bv_val; attrs++ ) {
+ ObjectClass *oc;
+ int rc;
+
+ if ( attrs->an_desc ) {
+ if ( is_ad_subtype( desc, attrs->an_desc ))
+ return 1;
+ continue;
+ }
+
+ /*
+ * EXTENSION: see if requested description is an object class
+ * if so, return attributes which the class requires/allows
+ */
+ oc = attrs->an_oc;
+ if( oc == NULL ) {
+ oc = oc_bvfind( &attrs->an_name );
+ attrs->an_oc = oc;
+ }
+ if( oc != NULL ) {
+ if ( oc == slap_schema.si_oc_extensibleObject ) {
+ /* extensibleObject allows the return of anything */
+ return 1;
+ }
+
+ if( oc->soc_required ) {
+ /* allow return of required attributes */
+ int i;
+ for ( i = 0; oc->soc_required[i] != NULL; i++ ) {
+ rc = is_at_subtype( desc->ad_type,
+ oc->soc_required[i] );
+ if( rc ) return 1;
+ }
+ }
+
+ if( oc->soc_allowed ) {
+ /* allow return of allowed attributes */
+ int i;
+ for ( i = 0; oc->soc_allowed[i] != NULL; i++ ) {
+ rc = is_at_subtype( desc->ad_type,
+ oc->soc_allowed[i] );
+ if( rc ) return 1;
+ }
+ }
+
+ } else {
+ /* short-circuit this search next time around */
+ if (!slap_schema.si_at_undefined->sat_ad) {
+ const char *text;
+ slap_bv2undef_ad(&attrs->an_name,
+ &attrs->an_desc, &text);
+ } else {
+ attrs->an_desc =
+ slap_schema.si_at_undefined->sat_ad;
+ }
+ }
+ }
+
+ return 0;
+}
+
+
+int slap_str2undef_ad(
+ const char *str,
+ AttributeDescription **ad,
+ const char **text )
+{
+ struct berval bv;
+ bv.bv_val = (char *) str;
+ bv.bv_len = strlen( str );
+
+ return slap_bv2undef_ad( &bv, ad, text );
+}
+
+int slap_bv2undef_ad(
+ struct berval *bv,
+ AttributeDescription **ad,
+ const char **text )
+{
+ AttributeDescription *desc;
+
+ assert( ad != NULL );
+
+ if( bv == NULL || bv->bv_len == 0 ) {
+ *text = "empty attribute description";
+ return LDAP_UNDEFINED_TYPE;
+ }
+
+ /* make sure description is IA5 */
+ if( ad_keystring( bv ) ) {
+ *text = "attribute description contains inappropriate characters";
+ return LDAP_UNDEFINED_TYPE;
+ }
+
+ for( desc = slap_schema.si_at_undefined->sat_ad; desc;
+ desc=desc->ad_next )
+ {
+ if( desc->ad_cname.bv_len == bv->bv_len &&
+ !strcasecmp( desc->ad_cname.bv_val, bv->bv_val ))
+ {
+ break;
+ }
+ }
+
+ if( !desc ) {
+ desc = ch_malloc(sizeof(AttributeDescription) + 1 +
+ bv->bv_len);
+
+ desc->ad_flags = SLAP_DESC_NONE;
+ desc->ad_lang.bv_val = NULL;
+ desc->ad_lang.bv_len = 0;
+
+ desc->ad_cname.bv_len = bv->bv_len;
+ desc->ad_cname.bv_val = (char *)(desc+1);
+ strcpy(desc->ad_cname.bv_val, bv->bv_val);
+
+ /* canonical to upper case */
+ ldap_pvt_str2upper( desc->ad_cname.bv_val );
+
+ desc->ad_type = slap_schema.si_at_undefined;
+ desc->ad_next = desc->ad_type->sat_ad;
+ desc->ad_type->sat_ad = desc;
+ }
+
+ if( !*ad ) {
+ *ad = desc;
+ } else {
+ **ad = *desc;
+ }
+
+ return LDAP_SUCCESS;
+}
+
+int
+an_find(
+ AttributeName *a,
+ struct berval *s
+)
+{
+ if( a == NULL ) return 0;
+
+ for ( ; a->an_name.bv_val; a++ ) {
+ if ( a->an_name.bv_len != s->bv_len) continue;
+ if ( strcasecmp( s->bv_val, a->an_name.bv_val ) == 0 ) {
+ return( 1 );
+ }
+ }
+
+ return( 0 );
+}
+
+/* Convert a delimited string into a list of AttributeNames; Add on
+ * to an existing list if it was given.
+ */
+AttributeName *
+str2anlist( AttributeName *an, char *in, const char *brkstr )
+{
+ char *str;
+ char *s;
+ char *lasts;
+ int i, j;
+ const char *text;
+ AttributeName *anew;
+
+ /* find last element in list */
+ for (i = 0; an && an[i].an_name.bv_val; i++);
+
+ /* protect the input string from strtok */
+ str = ch_strdup( in );
+
+ /* Count words in string */
+ j=1;
+ for ( s = str; *s; s++ ) {
+ if ( strchr( brkstr, *s ) != NULL ) {
+ j++;
+ }
+ }
+
+ an = ch_realloc( an, ( i + j + 1 ) * sizeof( AttributeName ) );
+ anew = an + i;
+ for ( s = ldap_pvt_strtok( str, brkstr, &lasts );
+ s != NULL;
+ s = ldap_pvt_strtok( NULL, brkstr, &lasts ) )
+ {
+ anew->an_desc = NULL;
+ anew->an_oc = NULL;
+ ber_str2bv(s, 0, 1, &anew->an_name);
+ slap_bv2ad(&anew->an_name, &anew->an_desc, &text);
+ if ( !anew->an_desc ) {
+ anew->an_oc = oc_bvfind( &anew->an_name );
+ if ( !anew->an_oc ) {
+ free( an );
+ /* overwrites input string on error! */
+ strcpy( in, s );
+ return NULL;
+ }
+ }
+ anew++;
+ }
+ anew->an_name.bv_val = NULL;
+
+ free( str );
+ return( an );
+}
+
projects / openldap / commitdiff