From 59716ffdc48ad71a0f047f7e68f04b64d449d408 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Fri, 27 Jan 2023 16:09:25 +0100
Subject: add logic to store attributes

---
 src/include/taler_attributes.h      | 74 +++++++++++++++++++++++++++++++++++++
 src/include/taler_crypto_lib.h      | 16 +++++++-
 src/include/taler_kyclogic_plugin.h |  2 +
 3 files changed, 91 insertions(+), 1 deletion(-)
 create mode 100644 src/include/taler_attributes.h

(limited to 'src/include')

diff --git a/src/include/taler_attributes.h b/src/include/taler_attributes.h
new file mode 100644
index 000000000..6c2a2b033
--- /dev/null
+++ b/src/include/taler_attributes.h
@@ -0,0 +1,74 @@
+/*
+     This file is part of GNU Taler
+     Copyright (C) 2023 Taler Systems SA
+
+     GNU Taler is free software: you can redistribute it and/or modify it
+     under the terms of the GNU Lesser General Public License as published
+     by the Free Software Foundation, either version 3 of the License,
+     or (at your option) any later version.
+
+     GNU Taler 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
+     Lesser General Public License for more details.
+
+     You should have received a copy of the GNU Lesser General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: LGPL3.0-or-later
+
+     Note: the LGPL does not apply to all components of GNU Taler,
+     but it does apply to this file.
+ */
+/**
+  * @file src/include/taler_attributes.h
+  * @brief GNU Taler database event types, TO BE generated via https://gana.gnunet.org/
+  */
+#ifndef GNU_TALER_ATTRIBUTES_H
+#define GNU_TALER_ATTRIBUTES_H
+
+#ifdef __cplusplus
+extern "C" {
+#if 0 /* keep Emacsens' auto-indent happy */
+}
+#endif
+#endif
+
+/**
+ * Full name, when known/possible using "Lastname, Firstname(s)" format,
+ * but "Firstname(s) Lastname" or "Firstname M. Lastname" should also be
+ * tolerated (as is "Name", especially if the person only has one name).
+ * If the person has no name, an empty string must be given.
+ * NULL for not collected.
+ */
+#define TALER_ATTRIBUTE_FULL_NAME "full_name"
+
+/**
+ * Birthdate of the person, as far as known. YYYY-MM-DD, a value
+ * of 0 (for DD, MM or even YYYY) is to be used for 'unknown'
+ * according to official records.
+ * Thus, 1950-00-00 stands for a birthdate in 1950 with unknown
+ * day and month.  If official documents record January 1st or
+ * some other date instead, that day may also be specified.
+ * NULL for not collected.
+ */
+#define TALER_ATTRIBUTE_BIRTHDATE "birthdate"
+
+/**
+ * Citizenship(s) of the person using 2-letter country codes ("US", "DE",
+ * "FR", "IT", etc.) separated by commas if multiple citizenships are
+ * confirmed ("EN,US,DE"). Note that in the latter case it is not guaranteed
+ * that all nationalities were necessarily recorded.  Empty string for
+ * stateless persons.  NULL for not collected.
+ */
+#define TALER_ATTRIBUTE_NATIONALITIES "nationalities"
+
+
+#if 0 /* keep Emacsens' auto-indent happy */
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h
index 6658ee0a1..dfd40e1d4 100644
--- a/src/include/taler_crypto_lib.h
+++ b/src/include/taler_crypto_lib.h
@@ -1,6 +1,6 @@
 /*
   This file is part of TALER
-  Copyright (C) 2014-2022 Taler Systems SA
+  Copyright (C) 2014-2023 Taler Systems SA
 
   TALER 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
@@ -1835,6 +1835,20 @@ TALER_CRYPTO_kyc_attributes_decrypt (
   size_t enc_attr_size);
 
 
+/**
+ * Takes a set of KYC attributes and extracts key
+ * data that we use to detect similar / duplicate
+ * entries in the database.
+ *
+ * @param attr set of KYC attributes
+ * @param[out] kyc_prox set to the proximity hash
+ */
+void
+TALER_CRYPTO_attributes_to_kyc_prox (
+  const json_t *attr,
+  struct GNUNET_ShortHashCode *kyc_prox);
+
+
 /**
  * Check if a coin is valid; that is, whether the denomination key exists,
  * is not expired, and the signature is correct.
diff --git a/src/include/taler_kyclogic_plugin.h b/src/include/taler_kyclogic_plugin.h
index 1782af917..a7e222179 100644
--- a/src/include/taler_kyclogic_plugin.h
+++ b/src/include/taler_kyclogic_plugin.h
@@ -189,6 +189,7 @@ typedef void
  * @param provider_legitimization_id set to legitimization process ID at the provider, or NULL if not supported or unknown
  * @param status KYC status
  * @param expiration until when is the KYC check valid
+ * @param attributes user attributes returned by the provider
  * @param http_status HTTP status code of @a response
  * @param[in] response to return to the HTTP client
  */
@@ -202,6 +203,7 @@ typedef void
   const char *provider_legitimization_id,
   enum TALER_KYCLOGIC_KycStatus status,
   struct GNUNET_TIME_Absolute expiration,
+  const json_t *attributes,
   unsigned int http_status,
   struct MHD_Response *response);
 
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