utils: add sss_authtok_[gs]et_2fa

Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/src/util/authtok-utils.h b/src/util/authtok-utils.h
new file mode 100644
index 000000000..07aef3c18
--- /dev/null
+++ b/src/util/authtok-utils.h
@@ -0,0 +1,70 @@
+/*
+   SSSD - auth utils helpers
+
+   Copyright (C) Sumit Bose <simo@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/>.
+*/
+
+#ifndef __AUTHTOK_UTILS_H__
+#define __AUTHTOK_UTILS_H__
+
+#include <talloc.h>
+
+#include "sss_client/sss_cli.h"
+
+/**
+ * @brief Fill memory buffer with 2FA blob
+ *
+ * @param[in]  fa1       First authentication factor, null terminated
+ * @param[in]  fa1_len   Length of the first authentication factor, if 0
+ *                       strlen() will be called internally
+ * @param[in]  fa2       Second authentication factor, null terminated
+ * @param[in]  fa2_len   Length of the second authentication factor, if 0
+ *                       strlen() will be called internally
+ * @param[in]  buf       memory buffer of size buf_len
+ * @param[in]  buf_len   size of memory buffer buf
+ *
+ * @param[out] _2fa_blob_len size of the 2FA blob
+ *
+ * @return     EOK       on success
+ *             EINVAL    if input data is not consistent
+ *             EAGAIN    if provided buffer is too small, _2fa_blob_len
+ *                       contains the size needed to store the 2FA blob
+ */
+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);
+
+/**
+ * @brief Extract 2FA data from memory buffer
+ *
+ * @param[in]  mem_ctx   Talloc memory context to allocate the 2FA data on
+ * @param[in]  blob      Memory buffer containing the 2FA data
+ * @param[in]  blob_len  Size of the memory buffer
+ * @param[out] _fa1      First authentication factor, null terminated
+ * @param[out] _fa1_len  Length of the first authentication factor
+ * @param[out] _fa2      Second authentication factor, null terminated
+ * @param[out] _fa2_len  Length of the second authentication factor
+ *
+ * @return     EOK       on success
+ *             EINVAL    if input data is not consistent
+ *             EINVAL    if no memory can be allocated
+ */
+errno_t sss_auth_unpack_2fa_blob(TALLOC_CTX *mem_ctx,
+                                 const uint8_t *blob, size_t blob_len,
+                                 char **fa1, size_t *_fa1_len,
+                                 char **fa2, size_t *_fa2_len);
+#endif /*  __AUTHTOK_UTILS_H__ */