forked from pool/sssd
0d7e32d3cc
Factory only - Resolve user retrieval problems when encountering binary data in LDAP attributes (bnc#806078), OBS-URL: https://build.opensuse.org/request/show/157216 OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/sssd?expand=0&rev=43
103 lines
4.1 KiB
Diff
103 lines
4.1 KiB
Diff
From 3229c2107e4645240cfc4aa5d262e5330c356a49 Mon Sep 17 00:00:00 2001
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From: Jan Engelhardt <jengelh@inai.de>
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Date: Thu, 21 Feb 2013 13:12:25 +0100
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Subject: [PATCH] sysdb: try dealing with binary-content attributes
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I have here a LDAP user entry which has this attribute
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loginAllowedTimeMap::
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AAAAAAAAAP///38AAP///38AAP///38AAP///38AAP///38AAAAAAAAA
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In the function sysdb_attrs_add_string(), called from
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sdap_attrs_add_ldap_attr(), strlen() is called on this blob, which is
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the wrong thing to do. The result of strlen is then used to populate
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the .v_length member of a struct ldb_val - and this will set it to
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zero in this case. (There is also the problem that there may not be
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a '\0' at all in the blob.)
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Subsequently, .v_length being 0 makes ldb_modify(), called from
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sysdb_set_entry_attr(), return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX. End
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result is that users do not get stored in the sysdb, and programs like
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`id` or `getent ...` show incomplete information.
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The bug was encountered with sssd-1.8.5. sssd-1.5.11 seemed to behave
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fine, but that may not mean that is the absolute lower boundary of
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introduction of the problem.
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---
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src/db/sysdb.c | 10 ++++++++++
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src/db/sysdb.h | 2 ++
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src/providers/ldap/sdap.c | 7 +++----
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src/providers/ldap/sdap_async.c | 4 ++--
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4 files changed, 17 insertions(+), 6 deletions(-)
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diff --git a/src/db/sysdb.c b/src/db/sysdb.c
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index e7524f4..7c34791 100644
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--- a/src/db/sysdb.c
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+++ b/src/db/sysdb.c
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@@ -512,6 +512,16 @@ int sysdb_attrs_add_string(struct sysdb_attrs *attrs,
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return sysdb_attrs_add_val(attrs, name, &v);
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}
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+int sysdb_attrs_add_mem(struct sysdb_attrs *attrs, const char *name,
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+ const void *mem, size_t size)
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+{
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+ struct ldb_val v;
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+
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+ v.data = discard_const(mem);
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+ v.length = size;
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+ return sysdb_attrs_add_val(attrs, name, &v);
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+}
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+
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int sysdb_attrs_add_bool(struct sysdb_attrs *attrs,
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const char *name, bool value)
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{
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diff --git a/src/db/sysdb.h b/src/db/sysdb.h
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index fff97a8..23cbbb0 100644
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--- a/src/db/sysdb.h
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+++ b/src/db/sysdb.h
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@@ -250,6 +250,8 @@ int sysdb_attrs_add_val(struct sysdb_attrs *attrs,
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const char *name, const struct ldb_val *val);
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int sysdb_attrs_add_string(struct sysdb_attrs *attrs,
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const char *name, const char *str);
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+int sysdb_attrs_add_mem(struct sysdb_attrs *, const char *,
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+ const void *, size_t);
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int sysdb_attrs_add_bool(struct sysdb_attrs *attrs,
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const char *name, bool value);
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int sysdb_attrs_add_long(struct sysdb_attrs *attrs,
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diff --git a/src/providers/ldap/sdap.c b/src/providers/ldap/sdap.c
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index 371121b..988f27d 100644
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--- a/src/providers/ldap/sdap.c
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+++ b/src/providers/ldap/sdap.c
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@@ -474,10 +474,9 @@ errno_t sdap_parse_deref(TALLOC_CTX *mem_ctx,
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for (i=0; dval->vals[i].bv_val; i++) {
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DEBUG(9, ("Dereferenced attribute value: %s\n",
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dval->vals[i].bv_val));
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- v.data = (uint8_t *) dval->vals[i].bv_val;
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- v.length = dval->vals[i].bv_len;
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-
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- ret = sysdb_attrs_add_val(res[mi]->attrs, name, &v);
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+ ret = sysdb_attrs_add_mem(res[mi]->attrs, name,
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+ dval->vals[i].bv_val,
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+ dval->vals[i].bv_len);
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if (ret) goto done;
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}
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}
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diff --git a/src/providers/ldap/sdap_async.c b/src/providers/ldap/sdap_async.c
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index 84497b7..b7d9839 100644
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--- a/src/providers/ldap/sdap_async.c
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+++ b/src/providers/ldap/sdap_async.c
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@@ -2226,8 +2226,8 @@ sdap_attrs_add_ldap_attr(struct sysdb_attrs *ldap_attrs,
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DEBUG(SSSDBG_TRACE_INTERNAL, ("Adding %s [%s] to attributes "
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"of [%s].\n", desc, el->values[i].data, objname));
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- ret = sysdb_attrs_add_string(attrs, attr_name,
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- (const char *) el->values[i].data);
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+ ret = sysdb_attrs_add_mem(attrs, attr_name, el->values[i].data,
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+ el->values[i].length);
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if (ret) {
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return ret;
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}
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--
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1.7.10.4
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