From 84abb428f640e4c48a7231ed78383b197ed715a9 Mon Sep 17 00:00:00 2001
From: Volker Lendecke <vl@samba.org>
Date: Sat, 12 Feb 2011 16:58:10 +0100
Subject: s3: Add an explicit counter to tldap_add_mod_[blobs|str]

---
 source3/include/tldap_util.h |  8 +++++---
 source3/lib/tldap_util.c     | 20 ++++++++++++--------
 source3/passdb/pdb_ads.c     | 18 ++++++++++--------
 3 files changed, 27 insertions(+), 19 deletions(-)

diff --git a/source3/include/tldap_util.h b/source3/include/tldap_util.h
index d0268fe1d6..6a99a5f78a 100644
--- a/source3/include/tldap_util.h
+++ b/source3/include/tldap_util.h
@@ -33,10 +33,12 @@ bool tldap_pull_binsid(struct tldap_message *msg, const char *attribute,
 		       struct dom_sid *sid);
 bool tldap_pull_guid(struct tldap_message *msg, const char *attribute,
 		     struct GUID *guid);
-bool tldap_add_mod_blobs(TALLOC_CTX *mem_ctx, struct tldap_mod **pmods,
+bool tldap_add_mod_blobs(TALLOC_CTX *mem_ctx,
+			 struct tldap_mod **pmods, int *pnum_mods,
 			 int mod_op, const char *attrib,
-			 DATA_BLOB *values, int num_values);
-bool tldap_add_mod_str(TALLOC_CTX *mem_ctx, struct tldap_mod **pmods,
+			 DATA_BLOB *newvals, int num_newvals);
+bool tldap_add_mod_str(TALLOC_CTX *mem_ctx,
+		       struct tldap_mod **pmods, int *pnum_mods,
 		       int mod_op, const char *attrib, const char *str);
 bool tldap_make_mod_blob(struct tldap_message *existing, TALLOC_CTX *mem_ctx,
 			 struct tldap_mod **pmods, int *pnum_mods,
diff --git a/source3/lib/tldap_util.c b/source3/lib/tldap_util.c
index 2646348aa1..e42188a2ab 100644
--- a/source3/lib/tldap_util.c
+++ b/source3/lib/tldap_util.c
@@ -132,7 +132,7 @@ static bool tldap_add_blob_vals(TALLOC_CTX *mem_ctx, struct tldap_mod *mod,
 }
 
 bool tldap_add_mod_blobs(TALLOC_CTX *mem_ctx,
-			 struct tldap_mod **pmods,
+			 struct tldap_mod **pmods, int *pnum_mods,
 			 int mod_op, const char *attrib,
 			 DATA_BLOB *newvals, int num_newvals)
 {
@@ -148,7 +148,7 @@ bool tldap_add_mod_blobs(TALLOC_CTX *mem_ctx,
 		return false;
 	}
 
-	num_mods = talloc_array_length(mods);
+	num_mods = *pnum_mods;
 
 	for (i=0; i<num_mods; i++) {
 		if ((mods[i].mod_op == mod_op)
@@ -174,7 +174,7 @@ bool tldap_add_mod_blobs(TALLOC_CTX *mem_ctx,
 		return false;
 	}
 
-	if (i == num_mods) {
+	if ((i == num_mods) && (talloc_array_length(mods) < num_mods + 1)) {
 		mods = talloc_realloc(talloc_tos(), mods, struct tldap_mod,
 				      num_mods+1);
 		if (mods == NULL) {
@@ -184,10 +184,12 @@ bool tldap_add_mod_blobs(TALLOC_CTX *mem_ctx,
 	}
 
 	*pmods = mods;
+	*pnum_mods += 1;
 	return true;
 }
 
-bool tldap_add_mod_str(TALLOC_CTX *mem_ctx, struct tldap_mod **pmods,
+bool tldap_add_mod_str(TALLOC_CTX *mem_ctx,
+		       struct tldap_mod **pmods, int *pnum_mods,
 		       int mod_op, const char *attrib, const char *str)
 {
 	DATA_BLOB utf8;
@@ -199,7 +201,8 @@ bool tldap_add_mod_str(TALLOC_CTX *mem_ctx, struct tldap_mod **pmods,
 		return false;
 	}
 
-	ret = tldap_add_mod_blobs(mem_ctx, pmods, mod_op, attrib, &utf8, 1);
+	ret = tldap_add_mod_blobs(mem_ctx, pmods, pnum_mods, mod_op, attrib,
+				  &utf8, 1);
 	TALLOC_FREE(utf8.data);
 	return ret;
 }
@@ -248,7 +251,8 @@ static bool tldap_make_mod_blob_int(struct tldap_message *existing,
 
 		DEBUG(10, ("smbldap_make_mod_blob: deleting attribute |%s|\n",
 			   attrib));
-		if (!tldap_add_mod_blobs(mem_ctx, pmods, TLDAP_MOD_DELETE,
+		if (!tldap_add_mod_blobs(mem_ctx, pmods, pnum_mods,
+					 TLDAP_MOD_DELETE,
 					 attrib, &oldval, 1)) {
 			return false;
 		}
@@ -261,12 +265,12 @@ static bool tldap_make_mod_blob_int(struct tldap_message *existing,
 	if (newval.data != NULL) {
 		DEBUG(10, ("smbldap_make_mod: adding attribute |%s| value len "
 			   "%d\n", attrib, (int)newval.length));
-	        if (!tldap_add_mod_blobs(mem_ctx, pmods, TLDAP_MOD_ADD,
+	        if (!tldap_add_mod_blobs(mem_ctx, pmods, pnum_mods,
+					 TLDAP_MOD_ADD,
 					 attrib, &newval, 1)) {
 			return false;
 		}
 	}
-	*pnum_mods = talloc_array_length(*pmods);
 	return true;
 }
 
diff --git a/source3/passdb/pdb_ads.c b/source3/passdb/pdb_ads.c
index 99170aacc3..8c5ea81145 100644
--- a/source3/passdb/pdb_ads.c
+++ b/source3/passdb/pdb_ads.c
@@ -330,11 +330,9 @@ static bool pdb_ads_init_ads_from_sam(struct pdb_ads_state *state,
 		}
 		blob = data_blob_const(pw_utf16, pw_utf16_len);
 
-		ret &= tldap_add_mod_blobs(mem_ctx, pmods, TLDAP_MOD_REPLACE,
+		ret &= tldap_add_mod_blobs(mem_ctx, pmods, pnum_mods,
+					   TLDAP_MOD_REPLACE,
 					   "unicodePwd", &blob, 1);
-		if (ret) {
-			*pnum_mods = talloc_array_length(*pmods);
-		}
 		TALLOC_FREE(pw_utf16);
 		TALLOC_FREE(pw_quote);
 	}
@@ -1084,6 +1082,7 @@ static NTSTATUS pdb_ads_mod_groupmem(struct pdb_methods *m,
 	struct dom_sid groupsid, membersid;
 	char *groupdn, *memberdn;
 	struct tldap_mod *mods;
+	int num_mods;
 	int rc;
 	NTSTATUS status;
 
@@ -1107,14 +1106,15 @@ static NTSTATUS pdb_ads_mod_groupmem(struct pdb_methods *m,
 	}
 
 	mods = NULL;
+	num_mods = 0;
 
-	if (!tldap_add_mod_str(talloc_tos(), &mods, mod_op,
+	if (!tldap_add_mod_str(talloc_tos(), &mods, &num_mods, mod_op,
 			       "member", memberdn)) {
 		TALLOC_FREE(frame);
 		return NT_STATUS_NO_MEMORY;
 	}
 
-	rc = tldap_modify(ld, groupdn, mods, 1, NULL, 0, NULL, 0);
+	rc = tldap_modify(ld, groupdn, mods, num_mods, NULL, 0, NULL, 0);
 	TALLOC_FREE(frame);
 	if (rc != TLDAP_SUCCESS) {
 		DEBUG(10, ("ldap_modify failed: %s\n",
@@ -1414,6 +1414,7 @@ static NTSTATUS pdb_ads_mod_aliasmem(struct pdb_methods *m,
 	struct tldap_context *ld;
 	TALLOC_CTX *frame = talloc_stackframe();
 	struct tldap_mod *mods;
+	int num_mods;
 	int rc;
 	char *aliasdn, *memberdn;
 	NTSTATUS status;
@@ -1439,14 +1440,15 @@ static NTSTATUS pdb_ads_mod_aliasmem(struct pdb_methods *m,
 	}
 
 	mods = NULL;
+	num_mods = 0;
 
-	if (!tldap_add_mod_str(talloc_tos(), &mods, mod_op,
+	if (!tldap_add_mod_str(talloc_tos(), &mods, &num_mods, mod_op,
 			       "member", memberdn)) {
 		TALLOC_FREE(frame);
 		return NT_STATUS_NO_MEMORY;
 	}
 
-	rc = tldap_modify(ld, aliasdn, mods, 1, NULL, 0, NULL, 0);
+	rc = tldap_modify(ld, aliasdn, mods, num_mods, NULL, 0, NULL, 0);
 	TALLOC_FREE(frame);
 	if (rc != TLDAP_SUCCESS) {
 		DEBUG(10, ("ldap_modify failed: %s\n",
-- 
cgit