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#include <unistd.h>
#include "ldap.h"
#include "byte.h"
#include "case.h"
#include <ctype.h>
static int matchcasestr(struct string* a,struct string* b) {
unsigned long l=a->l;
unsigned long r;
if (b->l<l) l=b->l;
if ((r=case_diffb(a->s,l,b->s))) return r;
if (a->l>l) return 1;
if (b->l>l) return -1;
return 0;
}
static int matchstr(struct string* a,struct string* b) {
unsigned long l=a->l;
unsigned long r;
if (b->l<l) l=b->l;
if ((r=byte_diff(a->s,l,b->s))) return r;
if (a->l>l) return 1;
if (b->l>l) return -1;
return 0;
}
static int matchstr_sre(struct Filter* f,struct string* s) {
int r;
if (f->attrflag&1)
r=matchcasestr(&f->ava.value,s);
else
r=matchstr(&f->ava.value,s);
if (f->type==EQUAL) return (r==0);
if (f->type==LESSEQUAL) return (r>0);
return (r<0);
}
static int ldap_match_present_sre(struct SearchResultEntry* sre,struct string* s) {
struct PartialAttributeList* p;
for (p=sre->attributes; p; p=p->next) {
int r;
if ((r=matchstr(&p->type,s))) return r;
}
return 0;
}
static int substrmatch(struct Substring* x,struct string* s,int ignorecase) {
int (*diff)(const void* a, size_t len, const void* b);
if (ignorecase)
diff=case_diffb;
else
diff=byte_diff;
while (x) {
unsigned long i;
if (x->s.l>s->l) return 0;
switch (x->substrtype) {
case prefix:
if (diff(x->s.s,x->s.l,s->s)) return 0;
found:
break;
case any:
if (s->l<x->s.l) return 0;
for (i=0; i<=s->l-x->s.l; ++i)
if (!diff(x->s.s,x->s.l,s->s+i))
goto found;
return 0;
case suffix:
if (diff(x->s.s,x->s.l,s->s+s->l-x->s.l)) return 0;
}
x=x->next;
}
return 1;
}
extern uint32_t dn_ofs;
int ldap_matchfilter_sre(struct SearchResultEntry* sre,struct Filter* f) {
struct PartialAttributeList* p;
struct Filter* y=f->x;
if (!f) return 1;
switch (f->type) {
case AND:
while (y) {
if (!ldap_matchfilter_sre(sre,y)) return 0;
y=y->next;
}
return 1;
case OR:
while (y) {
if (ldap_matchfilter_sre(sre,y)) return 1;
y=y->next;
}
return 0;
case NOT:
return !ldap_matchfilter_sre(sre,y);
case PRESENT:
return ldap_match_present_sre(sre,&f->ava.desc);
case EQUAL:
case LESSEQUAL:
case GREATEQUAL:
if (f->attrofs==dn_ofs)
return matchstr_sre(f,&sre->objectName);
for (p=sre->attributes; p; p=p->next) {
int r;
struct AttributeDescriptionList* a;
if (matchstr(&f->ava.desc,&p->type)) {
for (a=p->values; a; a=a->next)
if ((r=matchstr_sre(f,&a->a))) return r;
return 0;
}
}
return 0;
case SUBSTRING:
if (f->attrofs==dn_ofs)
return substrmatch(f->substrings,&sre->objectName,f->attrflag&1);
for (p=sre->attributes; p; p=p->next) {
if (matchstr(&f->ava.desc,&p->type)) {
struct AttributeDescriptionList* a;
int r;
for (a=p->values; a; a=a->next)
if ((r=substrmatch(f->substrings,&a->a,f->attrflag&1))) return r;
return 0;
}
}
return 0;
default:
write(2,"unsupported query type\n",23);
return 0;
}
return 1;
}
/* return 0 if they didn't match, otherwise return length in b */
static int match(const char* a,int len,const char* b,int blen) {
const char* A=a+len;
const char* B=b+blen;
while (len>0 && A>a && B>b) {
--A; --B; --len;
while (*A==' ' && A>a) { --A; --len; }
while (*B==' ' && B>b) --B;
if (tolower(*A) != tolower(*B))
return 0;
}
return b+blen-B;
}
int ldap_match_sre(struct SearchResultEntry* sre,struct SearchRequest* sr) {
unsigned long i;
if (sr->baseObject.l>sre->objectName.l)
/* baseObject is longer than dn */
return 0;
if (sr->baseObject.l && !match(sr->baseObject.s,sr->baseObject.l,sre->objectName.s,sre->objectName.l))
/* baseObject is not a suffix of dn */
return 0;
switch (sr->scope) {
case wholeSubtree: break;
case baseObject: if (sre->objectName.l==sr->baseObject.l) break; return 0;
default:
for (i=0; i<sre->objectName.l; ++i)
if (sre->objectName.s[i]==',')
break;
if (i+2>=sre->objectName.l-sr->baseObject.l) break;
return 0;
}
return ldap_matchfilter_sre(sre,sr->filter);
}
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