[SCM] Samba Shared Repository - branch master updated
Matthias Dieter Wallnöfer
mdw at samba.org
Thu Dec 2 04:36:01 MST 2010
The branch, master has been updated
via 6f42da7 s4:dsdb/samdb/cracknames.c - fix various KRB5 memory leaks
via 573389c s4:password_hash LDB module - allow empty ("") passwords
from f62972b s4/scripting/ktpass: make shell code portable and eliminate another bash requirement
http://gitweb.samba.org/?p=samba.git;a=shortlog;h=master
- Log -----------------------------------------------------------------
commit 6f42da795e5cce29c122aea1a6818c1ae1d99ae6
Author: Matthias Dieter Wallnöfer <mdw at samba.org>
Date: Thu Dec 2 11:49:56 2010 +0100
s4:dsdb/samdb/cracknames.c - fix various KRB5 memory leaks
Autobuild-User: Matthias Dieter Wallnöfer <mdw at samba.org>
Autobuild-Date: Thu Dec 2 12:35:03 CET 2010 on sn-devel-104
commit 573389c8cc8d74ad8560bc3531be5e2207d1bdaa
Author: Matthias Dieter Wallnöfer <mdw at samba.org>
Date: Thu Dec 2 09:55:56 2010 +0100
s4:password_hash LDB module - allow empty ("") passwords
This seems to have been broken some time ago - till someone on the
mailing list noticed it.
I've also added a testsuite (and some additional SamDB python helpers) which
should prove this.
-----------------------------------------------------------------------
Summary of changes:
source4/dsdb/samdb/cracknames.c | 20 ++++++---
source4/dsdb/samdb/ldb_modules/password_hash.c | 53 ++++++++++++++----------
source4/dsdb/tests/python/passwords.py | 19 ++++++++
source4/scripting/python/samba/samdb.py | 30 +++++++++++++
4 files changed, 93 insertions(+), 29 deletions(-)
Changeset truncated at 500 lines:
diff --git a/source4/dsdb/samdb/cracknames.c b/source4/dsdb/samdb/cracknames.c
index 6df140f..0b7b6ed 100644
--- a/source4/dsdb/samdb/cracknames.c
+++ b/source4/dsdb/samdb/cracknames.c
@@ -206,6 +206,7 @@ static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_c
/* This is checked for in callers, but be safe */
if (principal->name.name_string.len < 2) {
info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
+ krb5_free_principal(smb_krb5_context->krb5_context, principal);
return WERR_OK;
}
service = principal->name.name_string.val[0];
@@ -217,13 +218,14 @@ static WERROR DsCrackNameSPNAlias(struct ldb_context *sam_ctx, TALLOC_CTX *mem_c
service, &new_service);
if (namestatus == DRSUAPI_DS_NAME_STATUS_NOT_FOUND) {
+ wret = WERR_OK;
info1->status = DRSUAPI_DS_NAME_STATUS_DOMAIN_ONLY;
info1->dns_domain_name = talloc_strdup(mem_ctx, dns_name);
if (!info1->dns_domain_name) {
- krb5_free_principal(smb_krb5_context->krb5_context, principal);
- return WERR_NOMEM;
+ wret = WERR_NOMEM;
}
- return WERR_OK;
+ krb5_free_principal(smb_krb5_context->krb5_context, principal);
+ return wret;
} else if (namestatus != DRSUAPI_DS_NAME_STATUS_OK) {
info1->status = namestatus;
krb5_free_principal(smb_krb5_context->krb5_context, principal);
@@ -293,7 +295,8 @@ static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
return WERR_OK;
}
- realm = krb5_principal_get_realm(smb_krb5_context->krb5_context, principal);
+ realm = krb5_principal_get_realm(smb_krb5_context->krb5_context,
+ principal);
ldb_ret = ldb_search(sam_ctx, mem_ctx, &domain_res,
samdb_partitions_dn(sam_ctx, mem_ctx),
@@ -306,6 +309,7 @@ static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
if (ldb_ret != LDB_SUCCESS) {
DEBUG(2, ("DsCrackNameUPN domain ref search failed: %s", ldb_errstring(sam_ctx)));
info1->status = DRSUAPI_DS_NAME_STATUS_RESOLVE_ERROR;
+ krb5_free_principal(smb_krb5_context->krb5_context, principal);
return WERR_OK;
}
@@ -313,10 +317,12 @@ static WERROR DsCrackNameUPN(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
case 1:
break;
case 0:
+ krb5_free_principal(smb_krb5_context->krb5_context, principal);
return dns_domain_from_principal(mem_ctx, smb_krb5_context,
name, info1);
default:
info1->status = DRSUAPI_DS_NAME_STATUS_NOT_UNIQUE;
+ krb5_free_principal(smb_krb5_context->krb5_context, principal);
return WERR_OK;
}
@@ -616,12 +622,12 @@ WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
krb5_free_principal(smb_krb5_context->krb5_context, principal);
return WERR_OK;
+ } else if (ret == 0) {
+ krb5_free_principal(smb_krb5_context->krb5_context, principal);
}
ret = krb5_parse_name_flags(smb_krb5_context->krb5_context, name,
KRB5_PRINCIPAL_PARSE_NO_REALM, &principal);
if (ret) {
- krb5_free_principal(smb_krb5_context->krb5_context, principal);
-
return dns_domain_from_principal(mem_ctx, smb_krb5_context,
name, info1);
}
@@ -642,6 +648,7 @@ WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
computer_name = talloc_strndup(mem_ctx, principal->name.name_string.val[1],
strcspn(principal->name.name_string.val[1], "."));
if (computer_name == NULL) {
+ krb5_free_principal(smb_krb5_context->krb5_context, principal);
return WERR_NOMEM;
}
@@ -662,7 +669,6 @@ WERROR DsCrackNameOneName(struct ldb_context *sam_ctx, TALLOC_CTX *mem_ctx,
info1->status = DRSUAPI_DS_NAME_STATUS_NOT_FOUND;
return WERR_OK;
}
-
}
if (format_flags & DRSUAPI_DS_NAME_FLAG_SYNTACTICAL_ONLY) {
diff --git a/source4/dsdb/samdb/ldb_modules/password_hash.c b/source4/dsdb/samdb/ldb_modules/password_hash.c
index 35d2729..4e2e96f 100644
--- a/source4/dsdb/samdb/ldb_modules/password_hash.c
+++ b/source4/dsdb/samdb/ldb_modules/password_hash.c
@@ -1298,18 +1298,22 @@ static int setup_given_passwords(struct setup_password_fields_io *io,
(void *)&cleartext_utf16_blob->data,
&cleartext_utf16_blob->length,
false)) {
- talloc_free(cleartext_utf16_blob);
- ldb_asprintf_errstring(ldb,
- "setup_password_fields: "
- "failed to generate UTF16 password from cleartext UTF8 password for user %s", io->u.sAMAccountName);
- return LDB_ERR_CONSTRAINT_VIOLATION;
- } else {
- g->cleartext_utf16 = cleartext_utf16_blob;
+ if (g->cleartext_utf8->length != 0) {
+ talloc_free(cleartext_utf16_blob);
+ ldb_asprintf_errstring(ldb,
+ "setup_password_fields: "
+ "failed to generate UTF16 password from cleartext UTF8 one for user '%s'!",
+ io->u.sAMAccountName);
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ } else {
+ /* passwords with length "0" are valid! */
+ cleartext_utf16_blob->data = NULL;
+ cleartext_utf16_blob->length = 0;
+ }
}
+ g->cleartext_utf16 = cleartext_utf16_blob;
} else if (g->cleartext_utf16) {
- char *cleartext_utf8_str;
struct ldb_val *cleartext_utf8_blob;
- size_t converted_pw_len;
cleartext_utf8_blob = talloc(io->ac, struct ldb_val);
if (!cleartext_utf8_blob) {
@@ -1319,20 +1323,25 @@ static int setup_given_passwords(struct setup_password_fields_io *io,
CH_UTF16MUNGED, CH_UTF8,
g->cleartext_utf16->data,
g->cleartext_utf16->length,
- (void *)&cleartext_utf8_str,
- &converted_pw_len, false)) {
- /* We must bail out here, the input wasn't even a
- * multiple of 2 bytes */
- talloc_free(cleartext_utf8_blob);
- ldb_asprintf_errstring(ldb,
- "setup_password_fields: "
- "UTF16 password for user %s had odd length (length must be a multiple of 2)", io->u.sAMAccountName);
- return LDB_ERR_CONSTRAINT_VIOLATION;
- } else {
- *cleartext_utf8_blob = data_blob_const(cleartext_utf8_str,
- converted_pw_len);
- g->cleartext_utf8 = cleartext_utf8_blob;
+ (void *)&cleartext_utf8_blob->data,
+ &cleartext_utf8_blob->length,
+ false)) {
+ if (g->cleartext_utf16->length != 0) {
+ /* We must bail out here, the input wasn't even
+ * a multiple of 2 bytes */
+ talloc_free(cleartext_utf8_blob);
+ ldb_asprintf_errstring(ldb,
+ "setup_password_fields: "
+ "failed to generate UTF8 password from cleartext UTF 16 one for user '%s' - the latter had odd length (length must be a multiple of 2)!",
+ io->u.sAMAccountName);
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ } else {
+ /* passwords with length "0" are valid! */
+ cleartext_utf8_blob->data = NULL;
+ cleartext_utf8_blob->length = 0;
+ }
}
+ g->cleartext_utf8 = cleartext_utf8_blob;
}
if (g->cleartext_utf16) {
diff --git a/source4/dsdb/tests/python/passwords.py b/source4/dsdb/tests/python/passwords.py
index 198b314..e43298e 100755
--- a/source4/dsdb/tests/python/passwords.py
+++ b/source4/dsdb/tests/python/passwords.py
@@ -887,6 +887,25 @@ userPassword: thatsAcomplPASS4
# Reset the test "dSHeuristics" (reactivate "userPassword" pwd changes)
ldb.set_dsheuristics("000000001")
+ def test_zero_length(self):
+ # Get the old "minPwdLength"
+ minPwdLength = ldb.get_minPwdLength()
+ # Set it temporarely to "0"
+ ldb.set_minPwdLength("0")
+
+ # Get the old "pwdProperties"
+ pwdProperties = ldb.get_pwdProperties()
+ # Set them temporarely to "0" (to deactivate eventually the complexity)
+ ldb.set_pwdProperties("0")
+
+ ldb.setpassword("(sAMAccountName=testuser)", "")
+
+ # Reset the "pwdProperties" as they were before
+ ldb.set_pwdProperties(pwdProperties)
+
+ # Reset the "minPwdLength" as it was before
+ ldb.set_minPwdLength(minPwdLength)
+
def tearDown(self):
super(PasswordTests, self).tearDown()
delete_force(self.ldb, "cn=testuser,cn=users," + self.base_dn)
diff --git a/source4/scripting/python/samba/samdb.py b/source4/scripting/python/samba/samdb.py
index a7f474d..99f141e 100644
--- a/source4/scripting/python/samba/samdb.py
+++ b/source4/scripting/python/samba/samdb.py
@@ -637,6 +637,36 @@ accountExpires: %u
else:
return res[0]["minPwdAge"][0]
+ def set_minPwdLength(self, value):
+ m = ldb.Message()
+ m.dn = ldb.Dn(self, self.domain_dn())
+ m["minPwdLength"] = ldb.MessageElement(value, ldb.FLAG_MOD_REPLACE, "minPwdLength")
+ self.modify(m)
+
+ def get_minPwdLength(self):
+ res = self.search(self.domain_dn(), scope=ldb.SCOPE_BASE, attrs=["minPwdLength"])
+ if len(res) == 0:
+ return None
+ elif not "minPwdLength" in res[0]:
+ return None
+ else:
+ return res[0]["minPwdLength"][0]
+
+ def set_pwdProperties(self, value):
+ m = ldb.Message()
+ m.dn = ldb.Dn(self, self.domain_dn())
+ m["pwdProperties"] = ldb.MessageElement(value, ldb.FLAG_MOD_REPLACE, "pwdProperties")
+ self.modify(m)
+
+ def get_pwdProperties(self):
+ res = self.search(self.domain_dn(), scope=ldb.SCOPE_BASE, attrs=["pwdProperties"])
+ if len(res) == 0:
+ return None
+ elif not "pwdProperties" in res[0]:
+ return None
+ else:
+ return res[0]["pwdProperties"][0]
+
def set_dsheuristics(self, dsheuristics):
m = ldb.Message()
m.dn = ldb.Dn(self, "CN=Directory Service,CN=Windows NT,CN=Services,%s"
--
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