Merge branch 'v4-0-test' of ssh://git.samba.org/data/git/samba into pac-verify

(This used to be commit b706708210a05d6f10474a3cd2bbc550704d4356)

5 files changed, 66 insertions, 29 deletions

diff --git a/source4/lib/ldb/common/attrib_handlers.c b/source4/lib/ldb/common/attrib_handlers.c
index 8ed2763d4d..fb57e2dadc 100644
--- a/source4/lib/ldb/common/attrib_handlers.c
+++ b/source4/lib/ldb/common/attrib_handlers.c
@@ -55,11 +55,12 @@ int ldb_handler_fold(struct ldb_context *ldb, void *mem_ctx,
 {
 	char *s, *t;
 	int l;
+
 	if (!in || !out || !(in->data)) {
 		return -1;
 	}
 
-	out->data = (uint8_t *)ldb_casefold(ldb, mem_ctx, (const char *)(in->data));
+	out->data = (uint8_t *)ldb_casefold(ldb, mem_ctx, (const char *)(in->data), in->length);
 	if (out->data == NULL) {
 		ldb_debug(ldb, LDB_DEBUG_ERROR, "ldb_handler_fold: unable to casefold string [%s]", in->data);
 		return -1;
@@ -153,13 +154,14 @@ int ldb_comparison_fold(struct ldb_context *ldb, void *mem_ctx,
 			       const struct ldb_val *v1, const struct ldb_val *v2)
 {
 	const char *s1=(const char *)v1->data, *s2=(const char *)v2->data;
+	size_t n1 = v1->length, n2 = v2->length;
 	const char *u1, *u2;
 	char *b1, *b2;
 	int ret;
-	while (*s1 == ' ') s1++;
-	while (*s2 == ' ') s2++;
+	while (*s1 == ' ' && n1) { s1++; n1--; };
+	while (*s2 == ' ' && n2) { s2++; n2--; };
 	/* TODO: make utf8 safe, possibly with helper function from application */
-	while (*s1 && *s2) {
+	while (*s1 && *s2 && n1 && n2) {
 		/* the first 127 (0x7F) chars are ascii and utf8 guarantes they
 		 * never appear in multibyte sequences */
 		if (((unsigned char)s1[0]) & 0x80) goto utf8str;
@@ -167,10 +169,11 @@ int ldb_comparison_fold(struct ldb_context *ldb, void *mem_ctx,
 		if (toupper((unsigned char)*s1) != toupper((unsigned char)*s2))
 			break;
 		if (*s1 == ' ') {
-			while (s1[0] == s1[1]) s1++;
-			while (s2[0] == s2[1]) s2++;
+			while (s1[0] == s1[1] && n1) { s1++; n1--; }
+			while (s2[0] == s2[1] && n2) { s2++; n2--; }
 		}
 		s1++; s2++;
+		n1--; n2--;
 	}
 	if (! (*s1 && *s2)) {
 		/* check for trailing spaces only if one of the pointers
@@ -178,15 +181,18 @@ int ldb_comparison_fold(struct ldb_context *ldb, void *mem_ctx,
 		 * can mistakenly match.
 		 * ex. "domain users" <-> "domainUpdates"
 		 */
-		while (*s1 == ' ') s1++;
-		while (*s2 == ' ') s2++;
+		while (*s1 == ' ') { s1++; n1--; }
+		while (*s2 == ' ') { s2++; n2--; }
+	}
+	if (n1 != n2) {
+		return n1 - n2;
 	}
 	return (int)(toupper(*s1)) - (int)(toupper(*s2));
 
 utf8str:
 	/* no need to recheck from the start, just from the first utf8 char found */
-	b1 = ldb_casefold(ldb, mem_ctx, s1);
-	b2 = ldb_casefold(ldb, mem_ctx, s2);
+	b1 = ldb_casefold(ldb, mem_ctx, s1, n1);
+	b2 = ldb_casefold(ldb, mem_ctx, s2, n2);
 
 	if (b1 && b2) {
 		/* Both strings converted correctly */
@@ -221,6 +227,7 @@ utf8str:
 	return ret;
 }
 
+
 /*
   canonicalise a attribute in DN format
 */
diff --git a/source4/lib/ldb/common/ldb_attributes.c b/source4/lib/ldb/common/ldb_attributes.c
index effd93ae26..747f241781 100644
--- a/source4/lib/ldb/common/ldb_attributes.c
+++ b/source4/lib/ldb/common/ldb_attributes.c
@@ -51,6 +51,10 @@ int ldb_schema_attribute_add_with_syntax(struct ldb_context *ldb,
 	int i, n;
 	struct ldb_schema_attribute *a;
 
+	if (!syntax) {
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
+
 	n = ldb->schema.num_attributes + 1;
 
 	a = talloc_realloc(ldb, ldb->schema.attributes,
@@ -62,11 +66,24 @@ int ldb_schema_attribute_add_with_syntax(struct ldb_context *ldb,
 	ldb->schema.attributes = a;
 
 	for (i = 0; i < ldb->schema.num_attributes; i++) {
-		if (ldb_attr_cmp(attribute, a[i].name) < 0) {
+		int cmp = ldb_attr_cmp(attribute, a[i].name);
+		if (cmp == 0) {
+			/* silently ignore attempts to overwrite fixed attributes */
+			if (a[i].flags & LDB_ATTR_FLAG_FIXED) {
+				return 0;
+			}
+			if (a[i].flags & LDB_ATTR_FLAG_ALLOCATED) {
+				talloc_free(discard_const_p(char, a[i].name));
+			}
+			/* To cancel out increment below */
+			ldb->schema.num_attributes--;
+			break;
+		} else if (cmp < 0) {
 			memmove(a+i+1, a+i, sizeof(*a) * (ldb->schema.num_attributes-i));
 			break;
 		}
 	}
+	ldb->schema.num_attributes++;
 
 	a[i].name	= attribute;
 	a[i].flags	= flags;
@@ -80,7 +97,6 @@ int ldb_schema_attribute_add_with_syntax(struct ldb_context *ldb,
 		}
 	}
 
-	ldb->schema.num_attributes++;
 	return 0;
 }
 
@@ -145,7 +161,12 @@ void ldb_schema_attribute_remove(struct ldb_context *ldb, const char *name)
 	int i;
 
 	a = ldb_schema_attribute_by_name(ldb, name);
-	if (a == NULL) {
+	if (a == NULL || a->name == NULL) {
+		return;
+	}
+
+	/* FIXED attributes are never removed */
+	if (a->flags & LDB_ATTR_FLAG_FIXED) {
 		return;
 	}
 
diff --git a/source4/lib/ldb/common/ldb_dn.c b/source4/lib/ldb/common/ldb_dn.c
index 08911344b7..c0d36cfbf3 100644
--- a/source4/lib/ldb/common/ldb_dn.c
+++ b/source4/lib/ldb/common/ldb_dn.c
@@ -71,7 +71,7 @@ struct ldb_dn {
 };
 
 /* strdn may be NULL */
-struct ldb_dn *ldb_dn_new(void *mem_ctx, struct ldb_context *ldb, const char *strdn)
+struct ldb_dn *ldb_dn_from_ldb_val(void *mem_ctx, struct ldb_context *ldb, const struct ldb_val *strdn)
 {
 	struct ldb_dn *dn;
 
@@ -82,27 +82,27 @@ struct ldb_dn *ldb_dn_new(void *mem_ctx, struct ldb_context *ldb, const char *st
 
 	dn->ldb = ldb;
 
-	if (strdn) {
-		if (strdn[0] == '@') {
+	if (strdn->data && strdn->length) {
+		if (strdn->data[0] == '@') {
 			dn->special = true;
 		}
-		if (strncasecmp(strdn, "<GUID=", 6) == 0) {
+		if (strdn->length >= 6 && strncasecmp((const char *)strdn->data, "<GUID=", 6) == 0) {
 			/* this is special DN returned when the
 			 * exploded_dn control is used */
 			dn->special = true;
 			/* FIXME: add a GUID string to ldb_dn structure */
-		} else if (strncasecmp(strdn, "<SID=", 8) == 0) {
+		} else if (strdn->length >= 8 && strncasecmp((const char *)strdn->data, "<SID=", 8) == 0) {
 			/* this is special DN returned when the
 			 * exploded_dn control is used */
 			dn->special = true;
 			/* FIXME: add a SID string to ldb_dn structure */
-		} else if (strncasecmp(strdn, "<WKGUID=", 8) == 0) {
+		} else if (strdn->length >= 8 && strncasecmp((const char *)strdn->data, "<WKGUID=", 8) == 0) {
 			/* this is special DN returned when the
 			 * exploded_dn control is used */
 			dn->special = true;
 			/* FIXME: add a WKGUID string to ldb_dn structure */
 		}
-		dn->linearized = talloc_strdup(dn, strdn);
+		dn->linearized = talloc_strndup(dn, (const char *)strdn->data, strdn->length);
 	} else {
 		dn->linearized = talloc_strdup(dn, "");
 	}
@@ -115,6 +115,15 @@ failed:
 	return NULL;
 }
 
+/* strdn may be NULL */
+struct ldb_dn *ldb_dn_new(void *mem_ctx, struct ldb_context *ldb, const char *strdn)
+{
+	struct ldb_val blob;
+	blob.data = strdn;
+	blob.length = strdn ? strlen(strdn) : 0;
+	return ldb_dn_from_ldb_val(mem_ctx, ldb, &blob);
+}
+
 struct ldb_dn *ldb_dn_new_fmt(void *mem_ctx, struct ldb_context *ldb, const char *new_fmt, ...)
 {
 	struct ldb_dn *dn;
diff --git a/source4/lib/ldb/common/ldb_msg.c b/source4/lib/ldb/common/ldb_msg.c
index c1ea9db56b..2f5fe1d18c 100644
--- a/source4/lib/ldb/common/ldb_msg.c
+++ b/source4/lib/ldb/common/ldb_msg.c
@@ -389,10 +389,10 @@ int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
 	if (!v || !v->data) {
 		return default_value;
 	}
-	if (strcasecmp((const char *)v->data, "FALSE") == 0) {
+	if (v->length == 5 && strncasecmp((const char *)v->data, "FALSE", 5) == 0) {
 		return 0;
 	}
-	if (strcasecmp((const char *)v->data, "TRUE") == 0) {
+	if (v->length == 4 && strncasecmp((const char *)v->data, "TRUE", 4) == 0) {
 		return 1;
 	}
 	return default_value;
@@ -421,7 +421,7 @@ struct ldb_dn *ldb_msg_find_attr_as_dn(struct ldb_context *ldb,
 	if (!v || !v->data) {
 		return NULL;
 	}
-	res_dn = ldb_dn_new(mem_ctx, ldb, (const char *)v->data);
+	res_dn = ldb_dn_from_ldb_val(mem_ctx, ldb, v);
 	if ( ! ldb_dn_validate(res_dn)) {
 		talloc_free(res_dn);
 		return NULL;
diff --git a/source4/lib/ldb/common/ldb_utf8.c b/source4/lib/ldb/common/ldb_utf8.c
index b7b4a60122..69ee2b6964 100644
--- a/source4/lib/ldb/common/ldb_utf8.c
+++ b/source4/lib/ldb/common/ldb_utf8.c
@@ -40,8 +40,8 @@
   function to handle utf8 caseless comparisons
  */
 void ldb_set_utf8_fns(struct ldb_context *ldb,
-			void *context,
-			char *(*casefold)(void *, void *, const char *))
+		      void *context,
+		      char *(*casefold)(void *, void *, const char *, size_t))
 {
 	if (context)
 		ldb->utf8_fns.context = context;
@@ -53,10 +53,10 @@ void ldb_set_utf8_fns(struct ldb_context *ldb,
   a simple case folding function
   NOTE: does not handle UTF8
 */
-char *ldb_casefold_default(void *context, void *mem_ctx, const char *s)
+char *ldb_casefold_default(void *context, void *mem_ctx, const char *s, size_t n)
 {
 	int i;
-	char *ret = talloc_strdup(mem_ctx, s);
+	char *ret = talloc_strndup(mem_ctx, s, n);
 	if (!s) {
 		errno = ENOMEM;
 		return NULL;
@@ -72,9 +72,9 @@ void ldb_set_utf8_default(struct ldb_context *ldb)
 	ldb_set_utf8_fns(ldb, NULL, ldb_casefold_default);
 }
 
-char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s)
+char *ldb_casefold(struct ldb_context *ldb, void *mem_ctx, const char *s, size_t n)
 {
-	return ldb->utf8_fns.casefold(ldb->utf8_fns.context, mem_ctx, s);
+	return ldb->utf8_fns.casefold(ldb->utf8_fns.context, mem_ctx, s, n);
 }
 
 /*