[taler-anastasis] branch master updated (ef84fa4 -> c4f3b09)

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grothoff pushed a change to branch master
in repository anastasis.

    from ef84fa4  remove redundant birthdate q
     new 90b8a9d  add italian
     new eb52585  add it rules:
     new c4f3b09  add it rules

The 3 revisions listed above as "new" are entirely new to this
repository and will be described in separate emails.  The revisions
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Summary of changes:
 contrib/Makefile.am                      |   1 +
 contrib/redux.countries.json             |  11 ++
 contrib/{redux.cz.json => redux.it.json} |  16 +--
 src/reducer/Makefile.am                  |   1 +
 src/reducer/validation_IT_CF.c           | 198 +++++++++++++++++++++++++++++++
 5 files changed, 219 insertions(+), 8 deletions(-)
 copy contrib/{redux.cz.json => redux.it.json} (67%)
 create mode 100644 src/reducer/validation_IT_CF.c

diff --git a/contrib/Makefile.am b/contrib/Makefile.am
index a78b9e8..4304bcf 100644
--- a/contrib/Makefile.am
+++ b/contrib/Makefile.am
@@ -21,6 +21,7 @@ pkgdata_DATA = \
   redux.de.json \
   redux.dk.json \
   redux.in.json \
+  redux.it.json \
   redux.jp.json \
   redux.sk.json \
   redux.us.json \
diff --git a/contrib/redux.countries.json b/contrib/redux.countries.json
index 88fded4..7902578 100644
--- a/contrib/redux.countries.json
+++ b/contrib/redux.countries.json
@@ -84,6 +84,17 @@
                "currency": "INR",
                "call_code" : "+91"
        },
+       {
+               "code" : "it",
+               "name" : "Italy",
+               "continent" : "Europe",
+               "name_i18n" : {
+                       "de_DE": "Italien",
+                       "en_UK": "Italy"
+               },
+               "currency": "EUR",
+               "call_code" : "+39"
+       },
        {
                "code" : "jp",
                "name" : "Japan",
diff --git a/contrib/redux.cz.json b/contrib/redux.it.json
similarity index 67%
copy from contrib/redux.cz.json
copy to contrib/redux.it.json
index d5967a1..e4d0945 100644
--- a/contrib/redux.cz.json
+++ b/contrib/redux.it.json
@@ -28,16 +28,16 @@
        },
        {
            "type": "string",
-           "name": "birth_number",
-           "label": "Birth Number",
+           "name": "fiscal_code",
+           "label": "Codice fiscale",
            "label_i18n":{
-               "en": "Birth Number",
-               "cz": "rodné číslo"
+               "it": "Codice fiscale",
+               "en": "Fiscal code"
            },
-           "widget": "anastasis_gtk_ia_birthnumber_cz",
-            "uuid": "03e3a05b-1192-44f1-ac36-7425512eee1a",
-           "validation-regex": 
"^[0-9]{2}(((0|2|5|7)[0-9])|10|11|31|32|51|52|81|82)/[0-9]{3}[0-9]?$",
-           "validation-logic": "CZ_BN_check"
+           "widget": "anastasis_gtk_ia_cf_it",
+            "uuid": "88f53c51-52ad-4d63-a163-ec042589f925",
+           "validation-regex": 
"^[[:upper:]]{6}[0-9]{2}[A-EHLMPRT](([0-24-6][0-9])|(30|31|70|71))[A-MZ][0-9]{3}[A-Z]$",
+           "validation-logic": "IT_CF_check"
        }
     ]
 }
diff --git a/src/reducer/Makefile.am b/src/reducer/Makefile.am
index d9d058f..5cbe6f7 100644
--- a/src/reducer/Makefile.am
+++ b/src/reducer/Makefile.am
@@ -23,6 +23,7 @@ libanastasisredux_la_SOURCES = \
   validation_DE_SVN.c \
   validation_DE_TIN.c \
   validation_IN_AADHAR.c \
+  validation_IT_CF.c \
   validation_XX_SQUARE.c \
   validation_XY_PRIME.c
 libanastasisredux_la_LIBADD = \
diff --git a/src/reducer/validation_IT_CF.c b/src/reducer/validation_IT_CF.c
new file mode 100644
index 0000000..ecdad90
--- /dev/null
+++ b/src/reducer/validation_IT_CF.c
@@ -0,0 +1,198 @@
+/*
+  This file is part of Anastasis
+  Copyright (C) 2021 Taler Systems SA
+
+  Anastasis 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, or (at your option) any later version.
+
+  Anastasis 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
+  Anastasis; see the file COPYING.GPL.  If not, see 
<http://www.gnu.org/licenses/>
+*/
+/**
+ * @file redux/validation_IT_CF.c
+ * @brief validation of Italian Code Fiscales
+ * @author Christian Grothoff
+ */
+#include <string.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <math.h>
+
+struct MapEntry
+{
+  char in;
+  unsigned int out;
+};
+
+
+static const struct MapEntry odd[] = {
+  { '0',  1},
+  { '9',  21},
+  { 'I',  19 },
+  { 'R',  8},
+  { '1',  0},
+  { 'A',  1},
+  { 'J',  21},
+  { 'S',  12},
+  {'2',   5},
+  {'B',   0},
+  {'K',   2},
+  {'T',   14},
+  {'3',   7},
+  {'C',   5},
+  {'L',   4},
+  {'U',   16},
+  {'4',   9},
+  {'D',   7},
+  {'M',   18},
+  {'V',   10},
+  {'5',   13},
+  {'E',   9},
+  {'N',   20},
+  {'W',   22},
+  {'6',   15},
+  {'F',   13},
+  {'O',   11},
+  {'X',   25},
+  {'7',   17},
+  {'G',   15},
+  {'P',   3},
+  {'Y',   24},
+  {'8',   19},
+  {'H',   17},
+  {'Q',   6},
+  {'Z',   23},
+  {'\0', 0}
+};
+
+
+static const struct MapEntry even[] = {
+  { '0',  0},
+  { '1',   1},
+  { '2',  2  },
+  { '3',  3},
+  { '4',  4},
+  { '5',  5},
+  { '6',  6 },
+  { '7',  7 },
+  {'8',   8},
+  {'9',   9},
+  {'A',   0},
+  {'B',   1},
+  {'C',   2},
+  {'D',   3},
+  {'E',   4},
+  {'F',   5},
+  {'G',   6},
+  {'H',   7},
+  {'I',   8},
+  {'J',   9},
+  {'K',   10},
+  {'L',   11},
+  {'M',   12},
+  {'N',   13},
+  {'O',   14},
+  {'P',   15},
+  {'Q',   16},
+  {'R',   17},
+  {'S',   18},
+  {'T',   19},
+  {'U',   20},
+  {'V',   21},
+  {'W',   22},
+  {'X',   23},
+  {'Y',   24},
+  {'Z',   25},
+  {'\0', 0}
+};
+
+
+static const struct MapEntry rem[] = {
+  {'A',   0},
+  {'B',   1},
+  {'C',   2},
+  {'D',   3},
+  {'E',   4},
+  {'F',   5},
+  {'G',   6},
+  {'H',   7},
+  {'I',   8},
+  {'J',   9},
+  {'K',   10},
+  {'L',   11},
+  {'M',   12},
+  {'N',   13},
+  {'O',   14},
+  {'P',   15},
+  {'Q',   16},
+  {'R',   17},
+  {'S',   18},
+  {'T',   19},
+  {'U',   20},
+  {'V',   21},
+  {'W',   22},
+  {'X',   23},
+  {'Y',   24},
+  {'Z',   25},
+  {'\0', 0}
+};
+
+
+/**
+ * Lookup @a in in @a map. Set @a fail to true if @a in is not found.
+ *
+ * @param map character map to search
+ * @param in character to search for
+ * @param[out] fail set to true on error
+ * @return map value, 0 on error
+ */
+static unsigned int
+lookup (const struct MapEntry *map,
+        char in,
+        bool *fail)
+{
+  for (unsigned int i = 0; '\0' != map[i].in; i++)
+    if (in == map[i].in)
+      return map[i].out;
+  *fail = true;
+  return 0;
+}
+
+
+/**
+ * Function to validate an italian code fiscale number.
+ * See https://en.wikipedia.org/wiki/Italian_fiscal_code
+ *
+ * @param cf_number square number to validate (input)
+ * @return true if @a cf_number is a valid, else false
+ */
+bool
+IT_CF_check (const char *cf_number)
+{
+  unsigned int sum = 0;
+  bool fail = false;
+
+  if (strlen (cf_number) != 16)
+    return false;
+  for (unsigned int i = 0; i<15; i += 2)
+    sum += lookup (odd,
+                   cf_number[i],
+                   &fail);
+  for (unsigned int i = 1; i<15; i += 2)
+    sum += lookup (even,
+                   cf_number[i],
+                   &fail);
+  sum %= 26;
+  if (sum != lookup (rem,
+                     cf_number[15],
+                     &fail))
+    return false;
+  if (fail)
+    return false;
+  return true;
+}

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