Use lower-case name for case-insensitive searches

The patch makes sure that a completely lower-cased version of a fully
qualified name is used for case insensitive searches. Currently there
are code paths where the domain name was used as configured and was not
lower-cased.

To make sure this patch does not break with old entries in the cache or
case sensitive domains a third template was added to the related filters
templates which is either filled with a completely lower-cased version or
with the old version. The other two template values are unchanged.

3 files changed, 32 insertions, 16 deletions

diff --git a/src/db/sysdb.h b/src/db/sysdb.h
index cec8bdd20..2230f2c4b 100644
--- a/src/db/sysdb.h
+++ b/src/db/sysdb.h
@@ -144,23 +144,23 @@
 #define SYSDB_NC "objectclass="SYSDB_NETGROUP_CLASS
 #define SYSDB_MPGC "|("SYSDB_UC")("SYSDB_GC")"
 
-#define SYSDB_PWNAM_FILTER "(&("SYSDB_UC")(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)))"
+#define SYSDB_PWNAM_FILTER "(&("SYSDB_UC")(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)))"
 #define SYSDB_PWUID_FILTER "(&("SYSDB_UC")("SYSDB_UIDNUM"=%lu))"
 #define SYSDB_PWSID_FILTER "(&("SYSDB_UC")("SYSDB_SID_STR"=%s))"
 #define SYSDB_PWENT_FILTER "("SYSDB_UC")"
 
-#define SYSDB_GRNAM_FILTER "(&("SYSDB_GC")(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)))"
+#define SYSDB_GRNAM_FILTER "(&("SYSDB_GC")(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)))"
 #define SYSDB_GRGID_FILTER "(&("SYSDB_GC")("SYSDB_GIDNUM"=%lu))"
 #define SYSDB_GRSID_FILTER "(&("SYSDB_GC")("SYSDB_SID_STR"=%s))"
 #define SYSDB_GRENT_FILTER "("SYSDB_GC")"
-#define SYSDB_GRNAM_MPG_FILTER "(&("SYSDB_MPGC")(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)))"
+#define SYSDB_GRNAM_MPG_FILTER "(&("SYSDB_MPGC")(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)))"
 #define SYSDB_GRGID_MPG_FILTER "(&("SYSDB_MPGC")("SYSDB_GIDNUM"=%lu))"
 #define SYSDB_GRENT_MPG_FILTER "("SYSDB_MPGC")"
 
 #define SYSDB_INITGR_FILTER "(&("SYSDB_GC")("SYSDB_GIDNUM"=*))"
 
-#define SYSDB_NETGR_FILTER "(&("SYSDB_NC")(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)))"
-#define SYSDB_NETGR_TRIPLES_FILTER "(|("SYSDB_NAME"=%s)("SYSDB_NAME_ALIAS"=%s)("SYSDB_MEMBEROF"=%s))"
+#define SYSDB_NETGR_FILTER "(&("SYSDB_NC")(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)))"
+#define SYSDB_NETGR_TRIPLES_FILTER "(|("SYSDB_NAME_ALIAS"=%s)("SYSDB_NAME"=%s)("SYSDB_NAME_ALIAS"=%s)("SYSDB_MEMBEROF"=%s))"
 
 #define SYSDB_SID_FILTER "(&(|("SYSDB_UC")("SYSDB_GC"))("SYSDB_SID_STR"=%s))"
 
diff --git a/src/db/sysdb_ops.c b/src/db/sysdb_ops.c
index adbe9a158..cb331e1e2 100644
--- a/src/db/sysdb_ops.c
+++ b/src/db/sysdb_ops.c
@@ -305,6 +305,7 @@ int sysdb_search_user_by_name(TALLOC_CTX *mem_ctx,
     struct ldb_dn *basedn;
     size_t msgs_count = 0;
     char *sanitized_name;
+    char *lc_sanitized_name;
     char *filter;
     int ret;
 
@@ -320,13 +321,14 @@ int sysdb_search_user_by_name(TALLOC_CTX *mem_ctx,
         goto done;
     }
 
-    ret = sss_filter_sanitize(tmp_ctx, name, &sanitized_name);
+    ret = sss_filter_sanitize_for_dom(tmp_ctx, name, domain, &sanitized_name,
+                                      &lc_sanitized_name);
     if (ret != EOK) {
         goto done;
     }
 
-    filter = talloc_asprintf(tmp_ctx, SYSDB_PWNAM_FILTER, sanitized_name,
-                             sanitized_name);
+    filter = talloc_asprintf(tmp_ctx, SYSDB_PWNAM_FILTER, lc_sanitized_name,
+                             sanitized_name, sanitized_name);
     if (!filter) {
         ret = ENOMEM;
         goto done;
diff --git a/src/db/sysdb_search.c b/src/db/sysdb_search.c
index 83681384f..d5b7a305f 100644
--- a/src/db/sysdb_search.c
+++ b/src/db/sysdb_search.c
@@ -37,6 +37,7 @@ int sysdb_getpwnam(TALLOC_CTX *mem_ctx,
     struct ldb_dn *base_dn;
     struct ldb_result *res;
     char *sanitized_name;
+    char *lc_sanitized_name;
     const char *src_name;
     int ret;
 
@@ -60,13 +61,15 @@ int sysdb_getpwnam(TALLOC_CTX *mem_ctx,
         goto done;
     }
 
-    ret = sss_filter_sanitize(tmp_ctx, src_name, &sanitized_name);
+    ret = sss_filter_sanitize_for_dom(tmp_ctx, src_name, domain,
+                                      &sanitized_name, &lc_sanitized_name);
     if (ret != EOK) {
         goto done;
     }
 
     ret = ldb_search(domain->sysdb->ldb, tmp_ctx, &res, base_dn,
                      LDB_SCOPE_SUBTREE, attrs, SYSDB_PWNAM_FILTER,
+                     lc_sanitized_name,
                      sanitized_name, sanitized_name);
     if (ret) {
         ret = sysdb_error_to_errno(ret);
@@ -210,6 +213,7 @@ int sysdb_getgrnam(TALLOC_CTX *mem_ctx,
     struct ldb_dn *base_dn;
     struct ldb_result *res;
     const char *src_name;
+    char *lc_sanitized_name;
     int ret;
 
     tmp_ctx = talloc_new(NULL);
@@ -239,14 +243,15 @@ int sysdb_getgrnam(TALLOC_CTX *mem_ctx,
         goto done;
     }
 
-    ret = sss_filter_sanitize(tmp_ctx, src_name, &sanitized_name);
+    ret = sss_filter_sanitize_for_dom(tmp_ctx, src_name, domain,
+                                      &sanitized_name, &lc_sanitized_name);
     if (ret != EOK) {
         goto done;
     }
 
     ret = ldb_search(domain->sysdb->ldb, tmp_ctx, &res, base_dn,
                      LDB_SCOPE_SUBTREE, attrs, fmt_filter,
-                     sanitized_name, sanitized_name);
+                     lc_sanitized_name, sanitized_name, sanitized_name);
     if (ret) {
         ret = sysdb_error_to_errno(ret);
         goto done;
@@ -473,6 +478,7 @@ int sysdb_get_user_attr(TALLOC_CTX *mem_ctx,
     struct ldb_dn *base_dn;
     struct ldb_result *res;
     char *sanitized_name;
+    char *lc_sanitized_name;
     int ret;
 
     tmp_ctx = talloc_new(NULL);
@@ -487,14 +493,15 @@ int sysdb_get_user_attr(TALLOC_CTX *mem_ctx,
         goto done;
     }
 
-    ret = sss_filter_sanitize(tmp_ctx, name, &sanitized_name);
+    ret = sss_filter_sanitize_for_dom(tmp_ctx, name, domain, &sanitized_name,
+                                      &lc_sanitized_name);
     if (ret != EOK) {
         goto done;
     }
 
     ret = ldb_search(domain->sysdb->ldb, tmp_ctx, &res, base_dn,
                      LDB_SCOPE_SUBTREE, attributes,
-                     SYSDB_PWNAM_FILTER, sanitized_name,
+                     SYSDB_PWNAM_FILTER, lc_sanitized_name, sanitized_name,
                      sanitized_name);
     if (ret) {
         ret = sysdb_error_to_errno(ret);
@@ -776,6 +783,7 @@ errno_t sysdb_getnetgr(TALLOC_CTX *mem_ctx,
     struct ldb_dn *base_dn;
     struct ldb_result *result;
     char *sanitized_netgroup;
+    char *lc_sanitized_netgroup;
     char *netgroup_dn;
     int lret;
     errno_t ret;
@@ -793,7 +801,9 @@ errno_t sysdb_getnetgr(TALLOC_CTX *mem_ctx,
         goto done;
     }
 
-    ret = sss_filter_sanitize(tmp_ctx, netgroup, &sanitized_netgroup);
+    ret = sss_filter_sanitize_for_dom(tmp_ctx, netgroup, domain,
+                                      &sanitized_netgroup,
+                                      &lc_sanitized_netgroup);
     if (ret != EOK) {
         goto done;
     }
@@ -807,7 +817,7 @@ errno_t sysdb_getnetgr(TALLOC_CTX *mem_ctx,
 
     lret = ldb_search(domain->sysdb->ldb, tmp_ctx, &result, base_dn,
                      LDB_SCOPE_SUBTREE, attrs,
-                     SYSDB_NETGR_TRIPLES_FILTER,
+                     SYSDB_NETGR_TRIPLES_FILTER, lc_sanitized_netgroup,
                      sanitized_netgroup, sanitized_netgroup,
                      netgroup_dn);
     ret = sysdb_error_to_errno(lret);
@@ -833,6 +843,7 @@ int sysdb_get_netgroup_attr(TALLOC_CTX *mem_ctx,
     struct ldb_dn *base_dn;
     struct ldb_result *result;
     char *sanitized_netgroup;
+    char *lc_sanitized_netgroup;
     int ret;
 
     tmp_ctx = talloc_new(NULL);
@@ -847,7 +858,9 @@ int sysdb_get_netgroup_attr(TALLOC_CTX *mem_ctx,
         goto done;
     }
 
-    ret = sss_filter_sanitize(tmp_ctx, netgrname, &sanitized_netgroup);
+    ret = sss_filter_sanitize_for_dom(tmp_ctx, netgrname, domain,
+                                      &sanitized_netgroup,
+                                      &lc_sanitized_netgroup);
     if (ret != EOK) {
         goto done;
     }
@@ -855,6 +868,7 @@ int sysdb_get_netgroup_attr(TALLOC_CTX *mem_ctx,
     ret = ldb_search(domain->sysdb->ldb, tmp_ctx, &result, base_dn,
                      LDB_SCOPE_SUBTREE, attributes,
                      SYSDB_NETGR_FILTER,
+                     lc_sanitized_netgroup,
                      sanitized_netgroup,
                      sanitized_netgroup);
     if (ret) {