1 files changed, 74 insertions, 0 deletions
diff --git a/src/util/authtok-utils.c b/src/util/authtok-utils.c
new file mode 100644
index 000000000..65fba9022
--- /dev/null
+++ b/src/util/authtok-utils.c
@@ -0,0 +1,74 @@
+/*
+   SSSD - auth utils helpers
+
+   Copyright (C) Sumit Bose <sbose@redhat.com> 2015
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* This file is use by SSSD clients and the main daemons. Please do not add
+ * code which is specific to only one of them. */
+
+#include <errno.h>
+
+#include "sss_client/sss_cli.h"
+
+errno_t sss_auth_pack_2fa_blob(const char *fa1, size_t fa1_len,
+                               const char *fa2, size_t fa2_len,
+                               uint8_t *buf, size_t buf_len,
+                               size_t *_2fa_blob_len)
+{
+    size_t c;
+    uint32_t tmp_uint32_t;
+
+    if (fa1 == NULL || *fa1 == '\0' || fa1_len > UINT32_MAX
+            || fa2 == NULL || *fa2 == '\0' || fa2_len > UINT32_MAX
+            || (buf == NULL && buf_len != 0)) {
+        return EINVAL;
+    }
+
+    if (fa1_len == 0) {
+        fa1_len = strlen(fa1);
+    } else {
+        if (fa1[fa1_len] != '\0') {
+            return EINVAL;
+        }
+    }
+
+    if (fa2_len == 0) {
+        fa2_len = strlen(fa2);
+    } else {
+        if (fa2[fa2_len] != '\0') {
+            return EINVAL;
+        }
+    }
+
+    *_2fa_blob_len = fa1_len + fa2_len + 2 + 2 * sizeof(uint32_t);
+    if (buf == NULL || buf_len < *_2fa_blob_len) {
+        return EAGAIN;
+    }
+
+    c = 0;
+    tmp_uint32_t = (uint32_t) fa1_len + 1;
+    SAFEALIGN_COPY_UINT32(buf, &tmp_uint32_t, &c);
+    tmp_uint32_t = (uint32_t) fa2_len + 1;
+    SAFEALIGN_COPY_UINT32(buf + c, &tmp_uint32_t, &c);
+
+    memcpy(buf + c, fa1, fa1_len + 1);
+    c += fa1_len + 1;
+
+    memcpy(buf + c, fa2, fa2_len + 1);
+
+    return 0;
+}