[SSSD] [PATCH] AD: replace GID/UID, do not add another one

Jakub Hrozek jhrozek at redhat.com
Mon Jan 7 14:06:59 UTC 2013


On Mon, Jan 07, 2013 at 02:51:53PM +0100, Jakub Hrozek wrote:
> On Sun, Jan 06, 2013 at 02:35:42PM +0100, Jakub Hrozek wrote:
> > Please see the commit message. I was wondering whether to include a new
> > sysdb function, but then I couldn't think of any other place in the code
> > that needs to replace an attribute.
> 
> Self-nack, this doesn't work properly.

New patch is attached.
-------------- next part --------------
>From 179d0ed3b4b8905a8d48099d799160c9fb8af9f2 Mon Sep 17 00:00:00 2001
From: Jakub Hrozek <jhrozek at redhat.com>
Date: Sun, 6 Jan 2013 16:04:32 +0100
Subject: [PATCH] AD: replace GID/UID, do not add another one

The code would call sysdb_attrs_add_uint32 which added another UID or GID
to the ID=0 we already downloaded from LDAP (0 is the default value) when
ID-mapping an entry. This led to funky behaviour later on when we wanted
to process the ID.
---
 src/providers/ldap/sdap.c              | 31 +++++++++++++++++++++++++++++++
 src/providers/ldap/sdap.h              |  2 ++
 src/providers/ldap/sdap_async_groups.c |  8 +++-----
 src/providers/ldap/sdap_async_users.c  |  7 +++++--
 4 files changed, 41 insertions(+), 7 deletions(-)

diff --git a/src/providers/ldap/sdap.c b/src/providers/ldap/sdap.c
index f5b1f95f0eaa8e6b5ea9d77c1d7226c05d366104..4cdc06c5474d7d49e7f8e78f74ae9c4a62e7a5e1 100644
--- a/src/providers/ldap/sdap.c
+++ b/src/providers/ldap/sdap.c
@@ -1158,3 +1158,34 @@ int sdap_control_create(struct sdap_handle *sh, const char *oid, int iscritical,
 
     return ret;
 }
+
+int sdap_replace_id(struct sysdb_attrs *entry, const char *attr, id_t val)
+{
+    char *str;
+    errno_t ret;
+    struct ldb_message_element *el;
+
+    ret = sysdb_attrs_get_el_ext(entry, attr, false, &el);
+    if (ret == ENOENT) {
+        return sysdb_attrs_add_uint32(entry, attr, val);
+    } else if (ret) {
+        DEBUG(SSSDBG_OP_FAILURE, ("No such attribute %s\n", attr));
+        return ret;
+    }
+
+    if (el->num_values != 1) {
+        DEBUG(SSSDBG_OP_FAILURE,
+              ("Expected 1 value for %s, got %d\n", attr, el->num_values));
+        return EINVAL;
+    }
+
+    str = talloc_asprintf(entry, "%llu", (unsigned long long) val);
+    if (!str) {
+        return ENOMEM;
+    }
+
+    el->values[0].data = (uint8_t *) str;
+    el->values[0].length = strlen(str);
+
+    return EOK;
+}
diff --git a/src/providers/ldap/sdap.h b/src/providers/ldap/sdap.h
index d844ad6369dc19c82ea761afae746f9d4bd0ce82..d143657999f081dc067c43e0e7dedbb4a6ef3489 100644
--- a/src/providers/ldap/sdap.h
+++ b/src/providers/ldap/sdap.h
@@ -488,6 +488,8 @@ int build_attrs_from_map(TALLOC_CTX *memctx,
 int sdap_control_create(struct sdap_handle *sh, const char *oid, int iscritical,
                         struct berval *value, int dupval, LDAPControl **ctrlp);
 
+int sdap_replace_id(struct sysdb_attrs *entry, const char *attr, id_t val);
+
 errno_t sdap_set_config_options_with_rootdse(struct sysdb_attrs *rootdse,
                                              struct sdap_options *opts);
 int sdap_get_server_opts_from_rootdse(TALLOC_CTX *memctx,
diff --git a/src/providers/ldap/sdap_async_groups.c b/src/providers/ldap/sdap_async_groups.c
index 26f36fb93f4316f5b610ee2251479444493f1158..e1e84c339618c5fded3a28693b99b2a27058c05a 100644
--- a/src/providers/ldap/sdap_async_groups.c
+++ b/src/providers/ldap/sdap_async_groups.c
@@ -398,11 +398,9 @@ static int sdap_save_group(TALLOC_CTX *memctx,
         /* Store the GID in the ldap_attrs so it doesn't get
          * treated as a missing attribute from LDAP and removed.
          */
-        ret = sysdb_attrs_add_uint32(attrs, SYSDB_GIDNUM, gid);
-        if (ret != EOK) {
-            DEBUG(SSSDBG_MINOR_FAILURE,
-                  ("Could not store GID: [%s]\n",
-                   strerror(ret)));
+        ret = sdap_replace_id(attrs, SYSDB_GIDNUM, gid);
+        if (ret) {
+            DEBUG(SSSDBG_OP_FAILURE, ("Cannot set the id-mapped GID\n"));
             goto done;
         }
     } else {
diff --git a/src/providers/ldap/sdap_async_users.c b/src/providers/ldap/sdap_async_users.c
index f640b970a12ec2ecfa0af6c4ce9e49cffe8b9528..a0ccfb0d91de9ca71eda1ac62fe7a43f00a9baf5 100644
--- a/src/providers/ldap/sdap_async_users.c
+++ b/src/providers/ldap/sdap_async_users.c
@@ -160,8 +160,11 @@ int sdap_save_user(TALLOC_CTX *memctx,
         /* Store the UID in the ldap_attrs so it doesn't get
          * treated as a missing attribute from LDAP and removed.
          */
-        ret = sysdb_attrs_add_uint32(attrs, SYSDB_UIDNUM, uid);
-        if (ret != EOK) goto done;
+        ret = sdap_replace_id(attrs, SYSDB_UIDNUM, uid);
+        if (ret) {
+            DEBUG(SSSDBG_OP_FAILURE, ("Cannot set the id-mapped GID\n"));
+            goto done;
+        }
     } else {
         ret = sysdb_attrs_get_uint32_t(attrs,
                                        opts->user_map[SDAP_AT_USER_UID].sys_name,
-- 
1.8.0.2



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