318 lines
7.7 KiB
C
318 lines
7.7 KiB
C
/*
|
|
This file is part of TALER
|
|
Copyright (C) 2019-2021 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
|
|
Foundation; either version 3, or (at your option) any later version.
|
|
|
|
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 General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along with
|
|
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
|
|
*/
|
|
/**
|
|
* @file iban.c
|
|
* @brief Common utility function for dealing with IBAN numbers
|
|
* @author Florian Dold
|
|
*/
|
|
#include "platform.h"
|
|
#include "taler_util.h"
|
|
|
|
|
|
/* Country table taken from GNU gettext */
|
|
|
|
/**
|
|
* Entry in the country table.
|
|
*/
|
|
struct CountryTableEntry
|
|
{
|
|
/**
|
|
* 2-Character international country code.
|
|
*/
|
|
const char *code;
|
|
|
|
/**
|
|
* Long English name of the country.
|
|
*/
|
|
const char *english;
|
|
};
|
|
|
|
|
|
/* Keep the following table in sync with gettext.
|
|
WARNING: the entries should stay sorted according to the code */
|
|
/**
|
|
* List of country codes.
|
|
*/
|
|
static const struct CountryTableEntry country_table[] = {
|
|
{ "AE", "U.A.E." },
|
|
{ "AF", "Afghanistan" },
|
|
{ "AL", "Albania" },
|
|
{ "AM", "Armenia" },
|
|
{ "AN", "Netherlands Antilles" },
|
|
{ "AR", "Argentina" },
|
|
{ "AT", "Austria" },
|
|
{ "AU", "Australia" },
|
|
{ "AZ", "Azerbaijan" },
|
|
{ "BA", "Bosnia and Herzegovina" },
|
|
{ "BD", "Bangladesh" },
|
|
{ "BE", "Belgium" },
|
|
{ "BG", "Bulgaria" },
|
|
{ "BH", "Bahrain" },
|
|
{ "BN", "Brunei Darussalam" },
|
|
{ "BO", "Bolivia" },
|
|
{ "BR", "Brazil" },
|
|
{ "BT", "Bhutan" },
|
|
{ "BY", "Belarus" },
|
|
{ "BZ", "Belize" },
|
|
{ "CA", "Canada" },
|
|
{ "CG", "Congo" },
|
|
{ "CH", "Switzerland" },
|
|
{ "CI", "Cote d'Ivoire" },
|
|
{ "CL", "Chile" },
|
|
{ "CM", "Cameroon" },
|
|
{ "CN", "People's Republic of China" },
|
|
{ "CO", "Colombia" },
|
|
{ "CR", "Costa Rica" },
|
|
{ "CS", "Serbia and Montenegro" },
|
|
{ "CZ", "Czech Republic" },
|
|
{ "DE", "Germany" },
|
|
{ "DK", "Denmark" },
|
|
{ "DO", "Dominican Republic" },
|
|
{ "DZ", "Algeria" },
|
|
{ "EC", "Ecuador" },
|
|
{ "EE", "Estonia" },
|
|
{ "EG", "Egypt" },
|
|
{ "ER", "Eritrea" },
|
|
{ "ES", "Spain" },
|
|
{ "ET", "Ethiopia" },
|
|
{ "FI", "Finland" },
|
|
{ "FO", "Faroe Islands" },
|
|
{ "FR", "France" },
|
|
{ "GB", "United Kingdom" },
|
|
{ "GD", "Caribbean" },
|
|
{ "GE", "Georgia" },
|
|
{ "GL", "Greenland" },
|
|
{ "GR", "Greece" },
|
|
{ "GT", "Guatemala" },
|
|
{ "HK", "Hong Kong" },
|
|
{ "HK", "Hong Kong S.A.R." },
|
|
{ "HN", "Honduras" },
|
|
{ "HR", "Croatia" },
|
|
{ "HT", "Haiti" },
|
|
{ "HU", "Hungary" },
|
|
{ "ID", "Indonesia" },
|
|
{ "IE", "Ireland" },
|
|
{ "IL", "Israel" },
|
|
{ "IN", "India" },
|
|
{ "IQ", "Iraq" },
|
|
{ "IR", "Iran" },
|
|
{ "IS", "Iceland" },
|
|
{ "IT", "Italy" },
|
|
{ "JM", "Jamaica" },
|
|
{ "JO", "Jordan" },
|
|
{ "JP", "Japan" },
|
|
{ "KE", "Kenya" },
|
|
{ "KG", "Kyrgyzstan" },
|
|
{ "KH", "Cambodia" },
|
|
{ "KR", "South Korea" },
|
|
{ "KW", "Kuwait" },
|
|
{ "KZ", "Kazakhstan" },
|
|
{ "LA", "Laos" },
|
|
{ "LB", "Lebanon" },
|
|
{ "LI", "Liechtenstein" },
|
|
{ "LK", "Sri Lanka" },
|
|
{ "LT", "Lithuania" },
|
|
{ "LU", "Luxembourg" },
|
|
{ "LV", "Latvia" },
|
|
{ "LY", "Libya" },
|
|
{ "MA", "Morocco" },
|
|
{ "MC", "Principality of Monaco" },
|
|
{ "MD", "Moldava" },
|
|
{ "MD", "Moldova" },
|
|
{ "ME", "Montenegro" },
|
|
{ "MK", "Former Yugoslav Republic of Macedonia" },
|
|
{ "ML", "Mali" },
|
|
{ "MM", "Myanmar" },
|
|
{ "MN", "Mongolia" },
|
|
{ "MO", "Macau S.A.R." },
|
|
{ "MT", "Malta" },
|
|
{ "MV", "Maldives" },
|
|
{ "MX", "Mexico" },
|
|
{ "MY", "Malaysia" },
|
|
{ "NG", "Nigeria" },
|
|
{ "NI", "Nicaragua" },
|
|
{ "NL", "Netherlands" },
|
|
{ "NO", "Norway" },
|
|
{ "NP", "Nepal" },
|
|
{ "NZ", "New Zealand" },
|
|
{ "OM", "Oman" },
|
|
{ "PA", "Panama" },
|
|
{ "PE", "Peru" },
|
|
{ "PH", "Philippines" },
|
|
{ "PK", "Islamic Republic of Pakistan" },
|
|
{ "PL", "Poland" },
|
|
{ "PR", "Puerto Rico" },
|
|
{ "PT", "Portugal" },
|
|
{ "PY", "Paraguay" },
|
|
{ "QA", "Qatar" },
|
|
{ "RE", "Reunion" },
|
|
{ "RO", "Romania" },
|
|
{ "RS", "Serbia" },
|
|
{ "RU", "Russia" },
|
|
{ "RW", "Rwanda" },
|
|
{ "SA", "Saudi Arabia" },
|
|
{ "SE", "Sweden" },
|
|
{ "SG", "Singapore" },
|
|
{ "SI", "Slovenia" },
|
|
{ "SK", "Slovak" },
|
|
{ "SN", "Senegal" },
|
|
{ "SO", "Somalia" },
|
|
{ "SR", "Suriname" },
|
|
{ "SV", "El Salvador" },
|
|
{ "SY", "Syria" },
|
|
{ "TH", "Thailand" },
|
|
{ "TJ", "Tajikistan" },
|
|
{ "TM", "Turkmenistan" },
|
|
{ "TN", "Tunisia" },
|
|
{ "TR", "Turkey" },
|
|
{ "TT", "Trinidad and Tobago" },
|
|
{ "TW", "Taiwan" },
|
|
{ "TZ", "Tanzania" },
|
|
{ "UA", "Ukraine" },
|
|
{ "US", "United States" },
|
|
{ "UY", "Uruguay" },
|
|
{ "VA", "Vatican" },
|
|
{ "VE", "Venezuela" },
|
|
{ "VN", "Viet Nam" },
|
|
{ "YE", "Yemen" },
|
|
{ "ZA", "South Africa" },
|
|
{ "ZW", "Zimbabwe" }
|
|
};
|
|
|
|
|
|
/**
|
|
* Country code comparator function, for binary search with bsearch().
|
|
*
|
|
* @param ptr1 pointer to a `struct table_entry`
|
|
* @param ptr2 pointer to a `struct table_entry`
|
|
* @return result of memcmp()'ing the 2-digit country codes of the entries
|
|
*/
|
|
static int
|
|
cmp_country_code (const void *ptr1,
|
|
const void *ptr2)
|
|
{
|
|
const struct CountryTableEntry *cc1 = ptr1;
|
|
const struct CountryTableEntry *cc2 = ptr2;
|
|
|
|
return memcmp (cc1->code,
|
|
cc2->code,
|
|
2);
|
|
}
|
|
|
|
|
|
char *
|
|
TALER_iban_validate (const char *iban)
|
|
{
|
|
char cc[2];
|
|
char ibancpy[35];
|
|
struct CountryTableEntry cc_entry;
|
|
unsigned int len;
|
|
char *nbuf;
|
|
unsigned long long dividend;
|
|
unsigned long long remainder;
|
|
unsigned int i;
|
|
unsigned int j;
|
|
|
|
if (NULL == iban)
|
|
return GNUNET_strdup ("(null) is not a valid IBAN");
|
|
len = strlen (iban);
|
|
if (len < 4)
|
|
return GNUNET_strdup ("IBAN number too short to be valid");
|
|
if (len > 34)
|
|
return GNUNET_strdup ("IBAN number too long to be valid");
|
|
GNUNET_memcpy (cc, iban, 2);
|
|
GNUNET_memcpy (ibancpy, iban + 4, len - 4);
|
|
GNUNET_memcpy (ibancpy + len - 4, iban, 4);
|
|
ibancpy[len] = '\0';
|
|
cc_entry.code = cc;
|
|
cc_entry.english = NULL;
|
|
if (NULL ==
|
|
bsearch (&cc_entry,
|
|
country_table,
|
|
sizeof (country_table) / sizeof (struct CountryTableEntry),
|
|
sizeof (struct CountryTableEntry),
|
|
&cmp_country_code))
|
|
{
|
|
char *msg;
|
|
|
|
GNUNET_asprintf (&msg,
|
|
"Country code `%c%c' not supported\n",
|
|
cc[0],
|
|
cc[1]);
|
|
return msg;
|
|
}
|
|
nbuf = GNUNET_malloc ((len * 2) + 1);
|
|
for (i = 0, j = 0; i < len; i++)
|
|
{
|
|
if (isalpha ((unsigned char) ibancpy[i]))
|
|
{
|
|
if (2 != snprintf (&nbuf[j],
|
|
3,
|
|
"%2u",
|
|
(ibancpy[i] - 'A' + 10)))
|
|
{
|
|
GNUNET_break (0);
|
|
return GNUNET_strdup ("internal invariant violation");
|
|
}
|
|
j += 2;
|
|
continue;
|
|
}
|
|
nbuf[j] = ibancpy[i];
|
|
j++;
|
|
}
|
|
for (j = 0; '\0' != nbuf[j]; j++)
|
|
{
|
|
if (! isdigit ( (unsigned char) nbuf[j]))
|
|
{
|
|
char *msg;
|
|
|
|
GNUNET_asprintf (&msg,
|
|
"digit expected at `%s'",
|
|
&nbuf[j]);
|
|
GNUNET_free (nbuf);
|
|
return msg;
|
|
}
|
|
}
|
|
GNUNET_assert (sizeof(dividend) >= 8);
|
|
remainder = 0;
|
|
for (unsigned int i = 0; i<j; i += 16)
|
|
{
|
|
int nread;
|
|
|
|
if (1 !=
|
|
sscanf (&nbuf[i],
|
|
"%16llu %n",
|
|
÷nd,
|
|
&nread))
|
|
{
|
|
char *msg;
|
|
|
|
GNUNET_asprintf (&msg,
|
|
"wrong input for checksum calculation at `%s'",
|
|
&nbuf[i]);
|
|
GNUNET_free (nbuf);
|
|
return msg;
|
|
}
|
|
if (0 != remainder)
|
|
dividend += remainder * (pow (10, nread));
|
|
remainder = dividend % 97;
|
|
}
|
|
GNUNET_free (nbuf);
|
|
if (1 != remainder)
|
|
return GNUNET_strdup ("IBAN checksum is wrong");
|
|
return NULL;
|
|
}
|