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-rw-r--r--src/util/util.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/src/util/util.c b/src/util/util.c
index f45598b0c..08438cfab 100644
--- a/src/util/util.c
+++ b/src/util/util.c
@@ -28,6 +28,38 @@
/**
+ * Convert a buffer to an 8-character string
+ * representative of the contents. This is used
+ * for logging binary data when debugging.
+ *
+ * @param buf buffer to log
+ * @param buf_size number of bytes in @a buf
+ * @return text representation of buf, valid until next
+ * call to this function
+ */
+const char *
+TALER_b2s (const void *buf,
+ size_t buf_size)
+{
+ static char ret[9];
+ struct GNUNET_HashCode hc;
+ char *tmp;
+
+ GNUNET_CRYPTO_hash (buf,
+ buf_size,
+ &hc);
+ tmp = GNUNET_STRINGS_data_to_string_alloc (&hc,
+ sizeof (hc));
+ memcpy (ret,
+ tmp,
+ 8);
+ GNUNET_free (tmp);
+ ret[8] = '\0';
+ return ret;
+}
+
+
+/**
* Obtain denomination amount from configuration file.
*
* @param cfg configuration to use