Move domain_to_basedn outside IPA subtree

The utility function will be reused to guess search base from the base
DN of AD trusted domains.

2 files changed, 37 insertions, 0 deletions

diff --git a/src/util/util.c b/src/util/util.c
index ba85e0da2..63cffe85e 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -688,3 +688,38 @@ void safezero(void *data, size_t size)
         *p++ = 0;
     }
 }
+
+int domain_to_basedn(TALLOC_CTX *memctx, const char *domain, char **basedn)
+{
+    const char *s;
+    char *dn;
+    char *p;
+    int l;
+
+    if (!domain || !basedn) {
+        return EINVAL;
+    }
+
+    s = domain;
+    dn = talloc_strdup(memctx, "dc=");
+
+    while ((p = strchr(s, '.'))) {
+        l = p - s;
+        dn = talloc_asprintf_append_buffer(dn, "%.*s,dc=", l, s);
+        if (!dn) {
+            return ENOMEM;
+        }
+        s = p + 1;
+    }
+    dn = talloc_strdup_append_buffer(dn, s);
+    if (!dn) {
+        return ENOMEM;
+    }
+
+    for (p=dn; *p; ++p) {
+        *p = tolower(*p);
+    }
+
+    *basedn = dn;
+    return EOK;
+}
diff --git a/src/util/util.h b/src/util/util.h
index 87a4061e6..e55c0b4d3 100644
--- a/src/util/util.h
+++ b/src/util/util.h
@@ -516,6 +516,8 @@ bool string_in_list(const char *string, char **list, bool case_sensitive);
  */
 void safezero(void *data, size_t size);
 
+int domain_to_basedn(TALLOC_CTX *memctx, const char *domain, char **basedn);
+
 /* from nscd.c */
 enum nscd_db {
     NSCD_DB_PASSWD,