413 lines
19 KiB
C++
413 lines
19 KiB
C++
extern "C"
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{
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#include <postgres.h>
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#include <string.h>
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#include <fmgr.h>
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#include <utils/builtins.h>
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}
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#include <iostream>
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#include <sstream>
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#include <string>
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#include <cctype>
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#include <regex>
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#include "specification.h"
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#include "validate.h"
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extern "C"
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{
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#ifdef PG_MODULE_MAGIC
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PG_MODULE_MAGIC;
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#endif
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extern Datum iban_validate(PG_FUNCTION_ARGS);
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}
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void Validate::addSpecification(std::unique_ptr<Specification> specPtr) {
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this->specifications[specPtr->countryCode] = std::move(specPtr);
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}
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/**
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* Calculates the MOD 97 10 of the passed IBAN as specified in ISO7064.
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*
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* @param string iban
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* @returns {bool}
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*/
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bool iso7064Mod97_10(std::string iBan) {
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std::rotate(iBan.begin(), iBan.begin() + 4, iBan.end());
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std::string numberstring;//will contain the letter substitutions
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for (const auto& c : iBan) {
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if (std::isdigit(c))
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numberstring += c;
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if (std::isupper(c))
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numberstring += std::to_string(static_cast<int>(c) - 55);
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}
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//implements a stepwise check for mod 97 in chunks of 9 at the first time
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// , then in chunks of seven prepended by the last mod 97 operation converted
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//to a string
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int segstart = 0;
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int step = 9;
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std::string prepended;
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long number = 0;
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while (segstart < numberstring.length() - step) {
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number = std::stol(prepended + numberstring.substr(segstart, step));
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int remainder = number % 97;
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prepended = std::to_string(remainder);
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if (remainder < 10)
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prepended = "0" + prepended;
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segstart = segstart + step;
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step = 7;
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}
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number = std::stol(prepended + numberstring.substr(segstart));
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return (number % 97 == 1);
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}
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/**
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* parse the bban structure used to configure each iban specification and returns a matching regular expression.
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* a structure is composed of blocks of 3 characters (one letter and 2 digits). each block represents
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* a logical group in the typical representation of the bban. for each group, the letter indicates which characters
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* are allowed in this group and the following 2-digits number tells the length of the group.
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*
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* @param {string} structure the structure to parse
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* @returns {regexp}
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*/
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std::regex parseStructure(std::string structure) {
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std::smatch match;
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std::string::const_iterator text_iter = structure.cbegin();
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std::ostringstream result;
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while (std::regex_search(text_iter, structure.cend(), match,
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std::regex("(.{3})"))) {
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std::string format;
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char pattern = match[0].str()[0];
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int repeats = std::stoi((match[0].str().substr(1)));
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/* Parse each structure block (1-char + 2-digits) */
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switch (pattern) {
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case 'A': format = "0-9A-ZA-Z"; break;
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case 'B': format = "0-9A-Z"; break;
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case 'C': format = "A-ZA-Z"; break;
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case 'F': format = "0-9"; break;
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case 'L': format = "A-Z"; break;
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case 'U': format = "A-Z"; break;
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case 'W': format = "0-9A-Z"; break;
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}
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result << "([" << format << "]{" << repeats << "})";
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text_iter = match[0].second;
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}
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std::string regex = "^" + result.str() + "$";
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return std::regex(regex.c_str());
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}
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void Validate::setSelectedSpecification(std::string countryCode) {
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this->selectedSpec = std::move(this->specifications[countryCode]);
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}
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bool Validate::isValid(std::string arg) {
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std::unique_ptr<Specification> spec;
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spec = (std::make_unique<Specification>("", 0, "", arg));
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if (!this->selectedSpec) {
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std::transform(spec->example.begin(), spec->example.end(),
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spec->example.begin(), toupper);
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spec->countryCode = spec->example.substr(0, 2);
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spec->length = spec->example.length();
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setSelectedSpecification(spec->countryCode);
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}
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if (!(this->selectedSpec == nullptr)) {
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std::string shortened = spec->example.substr(4, spec->example.length());
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return this->selectedSpec->length == spec->length
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&& this->selectedSpec->countryCode.compare(
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spec->countryCode) == 0
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&& std::regex_match(shortened, parseStructure(
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this->selectedSpec->structure))
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&& iso7064Mod97_10(spec->example);
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} else {
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return false;
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}
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}
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Validate::Validate() {
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addSpecification(std::move(std::make_unique<Specification>(
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"AD", 24, "F04F04A12",
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"AD1200012030200359100100")));
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addSpecification(std::move(std::make_unique<Specification>(
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"AE", 23, "F03F16",
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"AE070331234567890123456")));
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addSpecification(std::move(std::make_unique<Specification>(
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"AL", 28, "F08A16",
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"AL47212110090000000235698741")));
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addSpecification(std::move(std::make_unique<Specification>(
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"AT", 20, "F05F11",
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"AT611904300234573201")));
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addSpecification(std::move(std::make_unique<Specification>(
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"AZ", 28, "U04A20",
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"AZ21NABZ00000000137010001944")));
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addSpecification(std::move(std::make_unique<Specification>(
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"BA", 20, "F03F03F08F02",
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"BA391290079401028494")));
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addSpecification(std::move(std::make_unique<Specification>(
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"BE", 16, "F03F07F02",
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"BE68539007547034")));
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addSpecification(std::move(std::make_unique<Specification>(
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"BG", 22, "U04F04F02A08",
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"BG80BNBG96611020345678")));
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addSpecification(std::move(std::make_unique<Specification>(
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"BH", 22, "U04A14",
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"BH67BMAG00001299123456")));
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addSpecification(std::move(std::make_unique<Specification>(
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"BR", 29, "F08F05F10U01A01",
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"BR9700360305000010009795493P1")));
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addSpecification(std::move(std::make_unique<Specification>(
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"CH", 21, "F05A12",
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"CH9300762011623852957")));
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addSpecification(std::move(std::make_unique<Specification>(
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"CR", 21, "F03F14",
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"CR0515202001026284066")));
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addSpecification(std::move(std::make_unique<Specification>(
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"CY", 28, "F03F05A16",
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"CY17002001280000001200527600")));
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addSpecification(std::move(std::make_unique<Specification>(
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"CZ", 24, "F04F06F10",
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"CZ6508000000192000145399")));
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addSpecification(std::move(std::make_unique<Specification>(
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"DE", 22, "F08F10",
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"DE89370400440532013000")));
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addSpecification(std::move(std::make_unique<Specification>(
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"DK", 18, "F04F09F01",
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"DK5000400440116243")));
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addSpecification(std::move(std::make_unique<Specification>(
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"DO", 28, "U04F20",
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"DO28BAGR00000001212453611324")));
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addSpecification(std::move(std::make_unique<Specification>(
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"EE", 20, "F02F02F11F01",
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"EE382200221020145685")));
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addSpecification(std::move(std::make_unique<Specification>(
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"ES", 24, "F04F04F01F01F10",
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"ES9121000418450200051332")));
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addSpecification(std::move(std::make_unique<Specification>(
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"FI", 18, "F06F07F01",
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"FI2112345600000785")));
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addSpecification(std::move(std::make_unique<Specification>(
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"FO", 18, "F04F09F01",
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"FO6264600001631634")));
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addSpecification(std::move(std::make_unique<Specification>(
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"FR", 27, "F05F05A11F02",
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"FR1420041010050500013M02606")));
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addSpecification(std::move(std::make_unique<Specification>(
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"GB", 22, "U04F06F08",
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"GB29NWBK60161331926819")));
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addSpecification(std::move(std::make_unique<Specification>(
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"GE", 22, "U02F16",
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"GE29NB0000000101904917")));
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addSpecification(std::move(std::make_unique<Specification>(
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"GI", 23, "U04A15",
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"GI75NWBK000000007099453")));
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addSpecification(std::move(std::make_unique<Specification>(
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"GL", 18, "F04F09F01",
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"GL8964710001000206")));
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addSpecification(std::move(std::make_unique<Specification>(
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"GR", 27, "F03F04A16",
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"GR1601101250000000012300695")));
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addSpecification(std::move(std::make_unique<Specification>(
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"GT", 28, "A04A20",
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"GT82TRAJ01020000001210029690")));
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addSpecification(std::move(std::make_unique<Specification>(
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"HR", 21, "F07F10",
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"HR1210010051863000160")));
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addSpecification(std::move(std::make_unique<Specification>(
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"HU", 28, "F03F04F01F15F01",
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"HU42117730161111101800000000")));
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addSpecification(std::move(std::make_unique<Specification>(
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"IE", 22, "U04F06F08",
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"IE29AIBK93115212345678")));
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addSpecification(std::move(std::make_unique<Specification>(
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"IL", 23, "F03F03F13",
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"IL620108000000099999999")));
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addSpecification(std::move(std::make_unique<Specification>(
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"IS", 26, "F04F02F06F10",
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"IS140159260076545510730339")));
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addSpecification(std::move(std::make_unique<Specification>(
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"IT", 27, "U01F05F05A12",
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"IT60X0542811101000000123456")));
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addSpecification(std::move(std::make_unique<Specification>(
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"KW", 30, "U04A22",
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"KW81CBKU0000000000001234560101")));
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addSpecification(std::move(std::make_unique<Specification>(
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"KZ", 20, "F03A13",
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"KZ86125KZT5004100100")));
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addSpecification(std::move(std::make_unique<Specification>(
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"LB", 28, "F04A20",
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"LB62099900000001001901229114")));
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addSpecification(std::move(std::make_unique<Specification>(
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"LC", 32, "U04F24",
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"LC07HEMM000100010012001200013015")));
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addSpecification(std::move(std::make_unique<Specification>(
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"LI", 21, "F05A12",
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"LI21088100002324013AA")));
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addSpecification(std::move(std::make_unique<Specification>(
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"LT", 20, "F05F11",
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"LT121000011101001000")));
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addSpecification(std::move(std::make_unique<Specification>(
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"LU", 20, "F03A13",
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"LU280019400644750000")));
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addSpecification(std::move(std::make_unique<Specification>(
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"LV", 21, "U04A13",
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"LV80BANK0000435195001")));
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addSpecification(std::move(std::make_unique<Specification>(
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"MC", 27, "F05F05A11F02",
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"MC5811222000010123456789030")));
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addSpecification(std::move(std::make_unique<Specification>(
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"MD", 24, "U02A18",
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"MD24AG000225100013104168")));
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addSpecification(std::move(std::make_unique<Specification>(
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"ME", 22, "F03F13F02",
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"ME25505000012345678951")));
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addSpecification(std::move(std::make_unique<Specification>(
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"MK", 19, "F03A10F02",
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"MK07250120000058984")));
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addSpecification(std::move(std::make_unique<Specification>(
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"MR", 27, "F05F05F11F02",
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"MR1300020001010000123456753")));
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addSpecification(std::move(std::make_unique<Specification>(
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"MT", 31, "U04F05A18",
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"MT84MALT011000012345MTLCAST001S")));
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addSpecification(std::move(std::make_unique<Specification>(
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"MU", 30, "U04F02F02F12F03U03",
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"MU17BOMM0101101030300200000MUR")));
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addSpecification(std::move(std::make_unique<Specification>(
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"NL", 18, "U04F10",
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"NL91ABNA0417164300")));
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addSpecification(std::move(std::make_unique<Specification>(
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"NO", 15, "F04F06F01",
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"NO9386011117947")));
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addSpecification(std::move(std::make_unique<Specification>(
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"PK", 24, "U04A16",
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"PK36SCBL0000001123456702")));
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addSpecification(std::move(std::make_unique<Specification>(
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"PL", 28, "F08F16",
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"PL61109010140000071219812874")));
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addSpecification(std::move(std::make_unique<Specification>(
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"PS", 29, "U04A21",
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"PS92PALS000000000400123456702")));
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addSpecification(std::move(std::make_unique<Specification>(
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"PT", 25, "F04F04F11F02",
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"PT50000201231234567890154")));
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addSpecification(std::move(std::make_unique<Specification>(
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"RO", 24, "U04A16",
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"RO49AAAA1B31007593840000")));
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addSpecification(std::move(std::make_unique<Specification>(
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"RS", 22, "F03F13F02",
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"RS35260005601001611379")));
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addSpecification(std::move(std::make_unique<Specification>(
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"SA", 24, "F02A18",
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"SA0380000000608010167519")));
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addSpecification(std::move(std::make_unique<Specification>(
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"SE", 24, "F03F16F01",
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"SE4550000000058398257466")));
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addSpecification(std::move(std::make_unique<Specification>(
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"SI", 19, "F05F08F02",
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"SI56263300012039086")));
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addSpecification(std::move(std::make_unique<Specification>(
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"SK", 24, "F04F06F10",
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"SK3112000000198742637541")));
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addSpecification(std::move(std::make_unique<Specification>(
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"SM", 27, "U01F05F05A12",
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"SM86U0322509800000000270100")));
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addSpecification(std::move(std::make_unique<Specification>(
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"ST", 25, "F08F11F02",
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"ST68000100010051845310112")));
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addSpecification(std::move(std::make_unique<Specification>(
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"TL", 23, "F03F14F02",
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"TL380080012345678910157")));
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addSpecification(std::move(std::make_unique<Specification>(
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"TN", 24, "F02F03F13F02",
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"TN5910006035183598478831")));
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addSpecification(std::move(std::make_unique<Specification>(
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"TR", 26, "F05F01A16",
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"TR330006100519786457841326")));
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addSpecification(std::move(std::make_unique<Specification>(
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"VG", 24, "U04F16",
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"VG96VPVG0000012345678901")));
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addSpecification(std::move(std::make_unique<Specification>(
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"XK", 20, "F04F10F02",
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"XK051212012345678906")));
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addSpecification(std::move(std::make_unique<Specification>(
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"AO", 25, "F21",
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"AO69123456789012345678901")));
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addSpecification(std::move(std::make_unique<Specification>(
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"BF", 27, "F23",
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"BF2312345678901234567890123")));
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addSpecification(std::move(std::make_unique<Specification>(
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"BI", 16, "F12",
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"BI41123456789012")));
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addSpecification(std::move(std::make_unique<Specification>(
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"BJ", 28, "F24",
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"BJ39123456789012345678901234")));
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addSpecification(std::move(std::make_unique<Specification>(
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"CI", 28, "U01F23",
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"CI17A12345678901234567890123")));
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addSpecification(std::move(std::make_unique<Specification>(
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"CM", 27, "F23",
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"CM9012345678901234567890123")));
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addSpecification(std::move(std::make_unique<Specification>(
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"CV", 25, "F21",
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"CV30123456789012345678901")));
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addSpecification(std::move(std::make_unique<Specification>(
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"DZ", 24, "F20",
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"DZ8612345678901234567890")));
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addSpecification(std::move(std::make_unique<Specification>(
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"IR", 26, "F22",
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"IR861234568790123456789012")));
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addSpecification(std::move(std::make_unique<Specification>(
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"JO", 30, "A04F22",
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"JO15AAAA1234567890123456789012")));
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addSpecification(std::move(std::make_unique<Specification>(
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"MG", 27, "F23",
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"MG1812345678901234567890123")));
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addSpecification(std::move(std::make_unique<Specification>(
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"ML", 28, "U01F23",
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"ML15A12345678901234567890123")));
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addSpecification(std::move(std::make_unique<Specification>(
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"MZ", 25, "F21",
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"MZ25123456789012345678901")));
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addSpecification(std::move(std::make_unique<Specification>(
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"QA", 29, "U04A21",
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"QA30AAAA123456789012345678901")));
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addSpecification(std::move(std::make_unique<Specification>(
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"SN", 28, "U01F23",
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"SN52A12345678901234567890123")));
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addSpecification(std::move(std::make_unique<Specification>(
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"UA", 29, "F25",
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"UA511234567890123456789012345")));
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}
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namespace {
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bool account_validate(text *iban) {
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char *ciban;
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Validate val;
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ciban = text_to_cstring(iban);
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return val.isValid(std::string(ciban));
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}
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}
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extern "C"
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{
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PG_FUNCTION_INFO_V1(iban_validate);
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Datum
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iban_validate(PG_FUNCTION_ARGS) {
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text *iban = PG_GETARG_TEXT_P(0);
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bool r = account_validate(iban);
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PG_RETURN_BOOL(r);
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}
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}
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