From: Mark Valence <mrv@openldap.org>
Date: Thu, 29 Jun 2000 22:02:15 +0000 (+0000)
Subject: Add support for Set ACLs and ACIs.  Still need to make this syntax awa
X-Git-Tag: LDBM_PRE_GIANT_RWLOCK~2505
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=3705a26f2d003cc3126ef9e2d9df9a7dca75aa3c;p=openldap

Add support for Set ACLs and ACIs.  Still need to make this syntax awa
re.
---

diff --git a/servers/slapd/Makefile.in b/servers/slapd/Makefile.in
index c3915e37a0..c27ebbd315 100644
--- a/servers/slapd/Makefile.in
+++ b/servers/slapd/Makefile.in
@@ -17,7 +17,7 @@ SRCS	= main.c daemon.c connection.c search.c filter.c add.c charray.c \
 		repl.c lock.c controls.c extended.c kerberos.c passwd.c \
 		schema.c schema_check.c schema_init.c schema_prep.c \
 		schemaparse.c ad.c at.c mr.c syntax.c oc.c \
-		monitor.c configinfo.c starttls.c index.c \
+		monitor.c configinfo.c starttls.c index.c sets.c\
 		root_dse.c sasl.c module.c suffixalias.c $(@PLAT@_SRCS)
 
 OBJS	= main.o daemon.o connection.o search.o filter.o add.o charray.o \
@@ -28,7 +28,7 @@ OBJS	= main.o daemon.o connection.o search.o filter.o add.o charray.o \
 		repl.o lock.o controls.o extended.o kerberos.o passwd.o \
 		schema.o schema_check.o schema_init.o schema_prep.o \
 		schemaparse.o ad.o at.o mr.o syntax.o oc.o \
-		monitor.o configinfo.o starttls.o index.o \
+		monitor.o configinfo.o starttls.o index.o sets.o\
 		root_dse.o sasl.o module.o suffixalias.o $(@PLAT@_OBJS)
 
 LDAP_INCDIR= ../../include
diff --git a/servers/slapd/acl.c b/servers/slapd/acl.c
index ea08d0bdda..3efffe79be 100644
--- a/servers/slapd/acl.c
+++ b/servers/slapd/acl.c
@@ -14,6 +14,7 @@
 #include <ac/string.h>
 
 #include "slap.h"
+#include "sets.h"
 
 static AccessControl * acl_get(
 	AccessControl *ac, int *count,
@@ -50,6 +51,9 @@ static void	string_expand(
 	char *newbuf, int bufsiz, char *pattern,
 	char *match, regmatch_t *matches);
 
+char **aci_set_gather (void *cookie, char *name, char *attr);
+static int aci_match_set ( struct berval *subj, Backend *be,
+    Entry *e, Connection *conn, Operation *op, int setref );
 
 /*
  * access_allowed - check whether op->o_ndn is allowed the requested access
@@ -620,6 +624,16 @@ acl_mask(
 			}
 		}
 
+		if ( b->a_set_pat != NULL ) {
+			struct berval bv;
+
+			bv.bv_val = b->a_set_pat;
+			bv.bv_len = strlen(b->a_set_pat);
+			if (aci_match_set( &bv, be, e, conn, op, 0 ) == 0) {
+				continue;
+			}
+		}
+
 #ifdef SLAPD_ACI_ENABLED
 		if ( b->a_aci_at != NULL ) {
 			Attribute	*at;
@@ -1149,6 +1163,125 @@ done:
 	return(rc);
 }
 
+char **
+aci_set_gather (void *cookie, char *name, char *attr)
+{
+	struct {
+    	Backend *be;
+    	Entry *e;
+    	Connection *conn;
+    	Operation *op;
+	} *cp = (void *)cookie;
+	struct berval **bvals = NULL;
+	char **vals = NULL;
+	char *ndn;
+	int i;
+
+	/* this routine needs to return the bervals instead of
+	 * plain strings, since syntax is not known.  It should
+	 * also return the syntax or some "comparison cookie".
+	 */
+
+	if ((ndn = ch_strdup(name)) != NULL) {
+		if (dn_normalize(ndn) != NULL) {
+			char *text;
+			AttributeDescription *desc = NULL;
+			if (slap_str2ad(attr, &desc, &text) == 0) {
+				backend_attribute(cp->be, NULL /*cp->conn*/,
+									NULL /*cp->op*/, cp->e,
+									ndn, desc, &bvals);
+				if (bvals != NULL) {
+					for (i = 0; bvals[i] != NULL; i++) { }
+					vals = ch_calloc(i + 1, sizeof(char *));
+					if (vals != NULL) {
+						while (--i >= 0) {
+							vals[i] = bvals[i]->bv_val;
+							bvals[i]->bv_val = NULL;
+						}
+					}
+					ber_bvecfree(bvals);
+				}
+				ad_free(desc, 1);
+			}
+		}
+		ch_free(ndn);
+	}
+	return(vals);
+}
+
+static int
+aci_match_set (
+	struct berval *subj,
+    Backend *be,
+    Entry *e,
+    Connection *conn,
+    Operation *op,
+    int setref
+)
+{
+	char *set = NULL;
+	int rc = 0;
+	struct {
+    	Backend *be;
+    	Entry *e;
+    	Connection *conn;
+    	Operation *op;
+	} cookie;
+
+	if (setref == 0) {
+		set = aci_bvstrdup(subj);
+	} else {
+		struct berval bv;
+		char *subjdn;
+		char *setat;
+		struct berval **bvals;
+		char *text;
+		AttributeDescription *desc = NULL;
+
+		/* format of string is "entry/setAttrName" */
+		if (aci_get_part(subj, 0, '/', &bv) < 0) {
+			return(0);
+		}
+
+		subjdn = aci_bvstrdup(&bv);
+		if ( subjdn == NULL ) {
+			return(0);
+		}
+
+		if ( aci_get_part(subj, 1, '/', &bv) < 0 ) {
+			setat = ch_strdup( SLAPD_ACI_SET_ATTR );
+		} else {
+			setat = aci_bvstrdup(&bv);
+		}
+		if ( setat != NULL ) {
+			if ( dn_normalize(subjdn) != NULL
+				&& slap_str2ad(setat, &desc, &text) == 0 )
+			{
+				backend_attribute(be, NULL, NULL, e,
+								subjdn, desc, &bvals);
+				ad_free(desc, 1);
+				if ( bvals != NULL ) {
+					if ( bvals[0] != NULL )
+						set = ch_strdup(bvals[0]->bv_val);
+					ber_bvecfree(bvals);
+				}
+			}
+			ch_free(setat);
+		}
+		ch_free(subjdn);
+	}
+
+	if (set != NULL) {
+		cookie.be = be;
+		cookie.e = e;
+		cookie.conn = conn;
+		cookie.op = op;
+		rc = (set_filter(aci_set_gather, &cookie, set, op->o_ndn, e->e_ndn, NULL) > 0);
+		ch_free(set);
+	}
+	return(rc);
+}
+
 static int
 aci_mask(
     Backend			*be,
@@ -1263,6 +1396,14 @@ aci_mask(
 		if (aci_group_member(&sdn, SLAPD_ROLE_CLASS, SLAPD_ROLE_ATTR, be, e, op, matches))
 			return(1);
 
+	} else if (aci_strbvcmp( "set", &bv ) == 0) {
+		if (aci_match_set(&sdn, be, e, conn, op, 0))
+			return(1);
+
+	} else if (aci_strbvcmp( "set-ref", &bv ) == 0) {
+		if (aci_match_set(&sdn, be, e, conn, op, 1))
+			return(1);
+
 	}
 
 	return(0);
diff --git a/servers/slapd/sets.c b/servers/slapd/sets.c
new file mode 100644
index 0000000000..622249377d
--- /dev/null
+++ b/servers/slapd/sets.c
@@ -0,0 +1,387 @@
+/* $OpenLDAP$ */
+/*
+ * Copyright 2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+
+#include "portable.h"
+#include <ac/string.h>
+
+#include "sets.h"
+
+static char **set_join (char **lset, int op, char **rset);
+static char **set_chase (SET_GATHER gatherer, void *cookie, char **set, char *attr, int attrlen, int closure);
+static int set_samedn (char *dn1, char *dn2);
+
+long
+set_size (char **set)
+{
+	int i;
+
+	i = 0;
+	if (set != NULL) {
+		while (set[i])
+			i++;
+	}
+	return(i);
+}
+
+void
+set_dispose (char **set)
+{
+	int i;
+
+	if (set != NULL) {
+		for (i = 0; set[i]; i++)
+			ch_free(set[i]);
+		ch_free(set);
+	}
+}
+
+static char **
+set_join (char **lset, int op, char **rset)
+{
+	char **set;
+	long i, j, last;
+
+	set = NULL;
+	if (op == '|') {
+		if (lset == NULL || *lset == NULL) {
+			if (rset == NULL) {
+				if (lset == NULL)
+					return(ch_calloc(1, sizeof(char *)));
+				return(lset);
+			}
+			set_dispose(lset);
+			return(rset);
+		}
+		if (rset == NULL || *rset == NULL) {
+			set_dispose(rset);
+			return(lset);
+		}
+
+		i = set_size(lset) + set_size(rset) + 1;
+		set = ch_calloc(i, sizeof(char *));
+		if (set != NULL) {
+			/* set_chase() depends on this routine to
+			 * keep the first elements of the result
+			 * set the same (and in the same order)
+			 * as the left-set.
+			 */
+			for (i = 0; lset[i]; i++)
+				set[i] = lset[i];
+			ch_free(lset);
+			for (i = 0; rset[i]; i++) {
+				for (j = 0; set[j]; j++) {
+					if (set_samedn(rset[i], set[j])) {
+						ch_free(rset[i]);
+						rset[i] = NULL;
+						break;		
+					}	
+				}
+				if (rset[i])
+					set[j] = rset[i];
+			}
+			ch_free(rset);
+		}
+		return(set);
+	}
+
+	if (op == '&') {
+		if (lset == NULL || *lset == NULL || rset == NULL || *rset == NULL) {
+			set = ch_calloc(1, sizeof(char *));
+		} else {
+			set = lset;
+			lset = NULL;
+			last = set_size(set) - 1;
+			for (i = 0; set[i]; i++) {
+				for (j = 0; rset[j]; j++) {
+					if (set_samedn(set[i], rset[j]))
+						break;
+				}
+				if (rset[j] == NULL) {
+					ch_free(set[i]);
+					set[i] = set[last];
+					set[last] = NULL;
+					last--;
+					i--;
+				}
+			}
+		}
+	}
+
+	set_dispose(lset);
+	set_dispose(rset);
+	return(set);
+}
+
+static char **
+set_chase (SET_GATHER gatherer, void *cookie, char **set, char *attr, int attrlen, int closure)
+{
+	char **vals, **nset;
+	char attrstr[32];
+	int i;
+
+	if (set == NULL)
+		return(ch_calloc(1, sizeof(char *)));
+
+	if (*set == NULL)
+		return(set);
+
+	if (attrlen > (sizeof(attrstr) - 1)) {
+		set_dispose(set);
+		return(NULL);
+	}
+	memcpy(attrstr, attr, attrlen);
+	attrstr[attrlen] = 0;
+
+	nset = ch_calloc(1, sizeof(char *));
+	if (nset == NULL) {
+		set_dispose(set);
+		return(NULL);
+	}
+	for (i = 0; set[i]; i++) {
+		vals = (gatherer)(cookie, set[i], attrstr);
+		if (vals != NULL)
+			nset = set_join(nset, '|', vals);
+	}
+	set_dispose(set);
+
+	if (closure) {
+		for (i = 0; nset[i]; i++) {
+			vals = (gatherer)(cookie, nset[i], attrstr);
+			if (vals != NULL) {
+				nset = set_join(nset, '|', vals);
+				if (nset == NULL)
+					break;
+			}
+		}
+	}
+	return(nset);
+}
+
+static int
+set_samedn (char *dn1, char *dn2)
+{
+	char c1, c2;
+
+	while (*dn1 == ' ') dn1++;
+	while (*dn2 == ' ') dn2++;
+	while (*dn1 || *dn2) {
+		if (*dn1 != '=' && *dn1 != ','
+			&& *dn2 != '=' && *dn2 != ',')
+		{
+			c1 = *dn1++;
+			c2 = *dn2++;
+			if (c1 >= 'a' && c1 <= 'z')
+				c1 -= 'a' - 'A';
+			if (c2 >= 'a' && c2 <= 'z')
+				c2 -= 'a' - 'A';
+			if (c1 != c2)
+				return(0);
+		} else {
+			while (*dn1 == ' ') dn1++;
+			while (*dn2 == ' ') dn2++;
+			if (*dn1++ != *dn2++)
+				return(0);
+			while (*dn1 == ' ') dn1++;
+			while (*dn2 == ' ') dn2++;
+		}
+	}
+	return(1);
+}
+
+int
+set_filter (SET_GATHER gatherer, void *cookie, char *filter, char *user, char *this, char ***results)
+{
+	#define IS_SET(x)	( (long)(x) >= 256 )
+	#define IS_OP(x)	( (long)(x) < 256 )
+	#define SF_ERROR(x)	{ rc = -1; goto _error; }
+	#define SF_TOP()	(char **)( (stp < 0) ? 0 : stack[stp] )
+	#define SF_POP()	(char **)( (stp < 0) ? 0 : stack[stp--] )
+	#define SF_PUSH(x)	{ if (stp >= 63) SF_ERROR(overflow); stack[++stp] = (char **)(long)(x); }
+	char c;
+	char **set, **lset;
+	int len, op, rc, stp;
+	char **stack[64];
+
+	if (results)
+		*results = NULL;
+
+	stp = -1;
+	while (c = *filter++) {
+		set = NULL;
+		switch (c) {
+		case ' ':
+		case '\t':
+		case '\x0A':
+		case '\x0D':
+			break;
+
+		case '(':
+			if (IS_SET(SF_TOP()))
+				SF_ERROR(syntax);
+			SF_PUSH(c);
+			break;
+
+		case ')':
+			set = SF_POP();
+			if (IS_OP(set))
+				SF_ERROR(syntax);
+			if (SF_TOP() == (void *)'(') {
+				SF_POP();
+				SF_PUSH(set);
+				set = NULL;
+			} else if (IS_OP(SF_TOP())) {
+				op = (long)SF_POP();
+				lset = SF_POP();
+				SF_POP();
+				set = set_join(lset, op, set);
+				if (set == NULL)
+					SF_ERROR(memory);
+				SF_PUSH(set);
+				set = NULL;
+			} else {
+				SF_ERROR(syntax);
+			}
+			break;
+
+		case '&':
+		case '|':
+			set = SF_POP();
+			if (IS_OP(set))
+				SF_ERROR(syntax);
+			if (SF_TOP() == 0 || SF_TOP() == (void *)'(') {
+				SF_PUSH(set);
+				set = NULL;
+			} else if (IS_OP(SF_TOP())) {
+				op = (long)SF_POP();
+				lset = SF_POP();
+				set = set_join(lset, op, set);
+				if (set == NULL)
+					SF_ERROR(memory);
+				SF_PUSH(set);
+				set = NULL;
+			} else {
+				SF_ERROR(syntax);
+			}
+			SF_PUSH(c);
+			break;
+
+		case '[':
+			if ((SF_TOP() == (void *)'/') || IS_SET(SF_TOP()))
+				SF_ERROR(syntax);
+			for (	len = 0;
+					(c = *filter++) && (c != ']');
+					len++)
+			{ }
+			if (c == 0)
+				SF_ERROR(syntax);
+			
+			set = ch_calloc(2, sizeof(char *));
+			if (set == NULL)
+				SF_ERROR(memory);
+			*set = ch_calloc(len + 1, sizeof(char));
+			if (*set == NULL)
+				SF_ERROR(memory);
+			memcpy(*set, &filter[-len - 1], len);
+			SF_PUSH(set);
+			set = NULL;
+			break;
+
+		case '-':
+			c = *filter++;
+			if (c != '>')
+				SF_ERROR(syntax);
+			/* fall through to next case */
+
+		case '/':
+			if (IS_OP(SF_TOP()))
+				SF_ERROR(syntax);
+			SF_PUSH('/');
+			break;
+
+		default:
+			if ((c != '_')
+				&& (c < 'A' || c > 'Z')
+				&& (c < 'a' || c > 'z'))
+			{
+				SF_ERROR(syntax);
+			}
+			filter--;
+			for (	len = 1;
+					(c = filter[len])
+						&& ((c >= '0' && c <= '9')
+							|| (c >= 'A' && c <= 'Z')
+							|| (c >= 'a' && c <= 'z'));
+					len++)
+			{ }
+			if (len == 4
+				&& memcmp("this", filter, len) == 0)
+			{
+				if ((SF_TOP() == (void *)'/') || IS_SET(SF_TOP()))
+					SF_ERROR(syntax);
+				set = ch_calloc(2, sizeof(char *));
+				if (set == NULL)
+					SF_ERROR(memory);
+				*set = ch_strdup(this);
+				if (*set == NULL)
+					SF_ERROR(memory);
+			} else if (len == 4
+				&& memcmp("user", filter, len) == 0) 
+			{
+				if ((SF_TOP() == (void *)'/') || IS_SET(SF_TOP()))
+					SF_ERROR(syntax);
+				set = ch_calloc(2, sizeof(char *));
+				if (set == NULL)
+					SF_ERROR(memory);
+				*set = ch_strdup(user);
+				if (*set == NULL)
+					SF_ERROR(memory);
+			} else if (SF_TOP() != (void *)'/') {
+				SF_ERROR(syntax);
+			} else {
+				SF_POP();
+				set = set_chase(gatherer, cookie, SF_POP(), filter, len, c == '*');
+				if (set == NULL)
+					SF_ERROR(memory);
+				if (c == '*')
+					len++;
+			}
+			filter += len;
+			SF_PUSH(set);
+			set = NULL;
+			break;
+		}
+	}
+
+	set = SF_POP();
+	if (IS_OP(set))
+		SF_ERROR(syntax);
+	if (SF_TOP() == 0) {
+
+	} else if (IS_OP(SF_TOP())) {
+		op = (long)SF_POP();
+		lset = SF_POP();
+		set = set_join(lset, op, set);
+		if (set == NULL)
+			SF_ERROR(memory);
+	} else {
+		SF_ERROR(syntax);
+	}
+
+	rc = set_size(set);
+	if (results) {
+		*results = set;
+		set = NULL;
+	}
+
+_error:
+	if (IS_SET(set))
+		set_dispose(set);
+	while (set = SF_POP()) {
+		if (IS_SET(set))
+			set_dispose(set);
+	}
+	return(rc);
+}
diff --git a/servers/slapd/sets.h b/servers/slapd/sets.h
new file mode 100644
index 0000000000..134707fe5e
--- /dev/null
+++ b/servers/slapd/sets.h
@@ -0,0 +1,18 @@
+/* $OpenLDAP$ */
+/*
+ * Copyright 2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+
+/* this routine needs to return the bervals instead of
+ * plain strings, since syntax is not known.  It should
+ * also return the syntax or some "comparison cookie"
+ * that is used by set_filter.
+ */
+typedef char **(*SET_GATHER) (void *cookie, char *name, char *attr);
+
+long set_size (char **set);
+void set_dispose (char **set);
+
+int set_filter (SET_GATHER gatherer, void *cookie, char *filter, char *user, char *this, char ***results);
+
diff --git a/servers/slapd/tools/Makefile.in b/servers/slapd/tools/Makefile.in
index 308bf9ed76..fad33e3883 100644
--- a/servers/slapd/tools/Makefile.in
+++ b/servers/slapd/tools/Makefile.in
@@ -47,7 +47,7 @@ SLAPD_OBJS = ../config.o ../ch_malloc.o ../backend.o ../charray.o \
 		../acl.o ../phonetic.o ../attr.o ../value.o ../entry.o \
 		../dn.o ../filter.o ../str2filter.o ../ava.o ../init.o \
 		../controls.o ../kerberos.o ../passwd.o ../index.o \
-		../extended.o ../starttls.o
+		../extended.o ../starttls.o ../sets.o
 
 SLAPOBJS = $(SLAPD_OBJS) slapcommon.o mimic.o