From 0d1eced630f4ed05ad95fdbb4354fd428c9cdbf6 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sat, 19 Mar 2016 15:23:11 +0100
Subject: first refactoring of JSON logic to address #4150 and #4237

---
 src/util/wireformats.c | 441 -------------------------------------------------
 1 file changed, 441 deletions(-)
 delete mode 100644 src/util/wireformats.c

(limited to 'src/util/wireformats.c')

diff --git a/src/util/wireformats.c b/src/util/wireformats.c
deleted file mode 100644
index a69e8a093..000000000
--- a/src/util/wireformats.c
+++ /dev/null
@@ -1,441 +0,0 @@
-/*
-  This file is part of TALER
-  Copyright (C) 2014, 2015 GNUnet e.V.
-
-  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, If not, see <http://www.gnu.org/licenses/>
-*/
-/**
- * @file util/wireformats.c
- * @brief helper functions for JSON processing using libjansson
- * @author Sree Harsha Totakura <sreeharsha@totakura.in>
- * @author Christian Grothoff
- */
-#include "platform.h"
-#include <gnunet/gnunet_util_lib.h>
-#include "taler_util.h"
-
-/**
- * Shorthand for exit jumps.
- */
-#define EXITIF(cond)                                              \
-  do {                                                            \
-    if (cond) { GNUNET_break (0); goto EXITIF_exit; }             \
-  } while (0)
-
-/**
- * Shorthand for JSON parsing related exit jumps.
- */
-#define UNPACK_EXITIF(cond)                                             \
-  do {                                                                  \
-    if (cond) { TALER_json_warn (error); goto EXITIF_exit; }            \
-  } while (0)
-
-
-/* Taken from GNU gettext */
-
-/**
- * Entry in the country table.
- */
-struct table_entry
-{
-  /**
-   * 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 table_entry 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 strncmp()'ing the 2-digit country codes of the entries
- */
-static int
-cmp_country_code (const void *ptr1,
-                  const void *ptr2)
-{
-  const struct table_entry *cc1 = ptr1;
-  const struct table_entry *cc2 = ptr2;
-
-  return strncmp (cc1->code, cc2->code, 2);
-}
-
-
-/**
- * Validates given IBAN according to the European Banking Standards.  See:
- * http://www.europeanpaymentscouncil.eu/documents/ECBS%20IBAN%20standard%20EBS204_V3.2.pdf
- *
- * @param iban the IBAN number to validate
- * @return #GNUNET_YES if correctly formatted; #GNUNET_NO if not
- */
-static int
-validate_iban (const char *iban)
-{
-  char cc[2];
-  char ibancpy[35];
-  struct table_entry cc_entry;
-  unsigned int len;
-  char *nbuf;
-  unsigned int i;
-  unsigned int j;
-  unsigned long long dividend;
-  unsigned long long remainder;
-  int nread;
-  int ret;
-
-  len = strlen (iban);
-  if (len > 34)
-    return GNUNET_NO;
-  strncpy (cc, iban, 2);
-  strncpy (ibancpy, iban + 4, len - 4);
-  strncpy (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 table_entry),
-               sizeof (struct table_entry),
-               &cmp_country_code))
-    return GNUNET_NO;
-  nbuf = GNUNET_malloc ((len * 2) + 1);
-  for (i=0, j=0; i < len; i++)
-  {
-    if (isalpha ((int) ibancpy[i]))
-    {
-      EXITIF(2 != snprintf(&nbuf[j],
-                           3,
-                           "%2u",
-                           (ibancpy[i] - 'A' + 10)));
-      j += 2;
-      continue;
-    }
-    nbuf[j] = ibancpy[i];
-    j++;
-  }
-  for (j=0;'\0' != nbuf[j];j++)
-    GNUNET_assert (isdigit(nbuf[j]));
-  GNUNET_assert (sizeof(dividend) >= 8);
-  remainder = 0;
-  for (i=0; i<j; i+=16)
-  {
-    EXITIF (1 !=
-            (ret = sscanf (&nbuf[i],
-                           "%16llu %n",
-                           &dividend,
-                           &nread)));
-    if (0 != remainder)
-      dividend += remainder * (pow (10, nread));
-    remainder = dividend % 97;
-  }
-  if (1 == remainder)
-  {
-    GNUNET_free (nbuf);
-    return GNUNET_YES;
-  }
- EXITIF_exit:
-  GNUNET_free (nbuf);
-  return GNUNET_NO;
-}
-
-
-/**
- * Validate SEPA account details.
- *
- * @param wire JSON with the SEPA details
- * @return  #GNUNET_YES if correctly formatted; #GNUNET_NO if not
- */
-static int
-validate_sepa (const json_t *wire)
-{
-  json_error_t error;
-  const char *type;
-  const char *iban;
-  const char *name;
-  const char *bic;
-  uint64_t r;
-  const char *address;
-
-  UNPACK_EXITIF (0 != json_unpack_ex
-                 ((json_t *) wire,
-                  &error, JSON_STRICT,
-                  "{"
-                  "s:s," /* TYPE: sepa */
-                  "s:s," /* IBAN: iban */
-                  "s:s," /* name: beneficiary name */
-                  "s:s," /* BIC: beneficiary bank's BIC */
-                  "s:i," /* r: random 64-bit integer nounce */
-                  "s:s"  /* address: address of the beneficiary */
-                  "}",
-                  "type", &type,
-                  "IBAN", &iban,
-                  "name", &name,
-                  "bic", &bic,
-                  "r", &r,
-                  "address", &address));
-  if (1 != validate_iban (iban))
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-		"IBAN `%s' invalid\n",
-		iban);
-    return GNUNET_NO;
-  }
-  return GNUNET_YES;
- EXITIF_exit:
-  return GNUNET_NO;
-}
-
-
-/**
- * Validate TEST account details.  The "test" format is used
- * for testing, so this validator does nothing.
- *
- * @param wire JSON with the TEST details
- * @return  #GNUNET_YES if correctly formatted; #GNUNET_NO if not
- */
-static int
-validate_test (const json_t *wire)
-{
-  return GNUNET_YES;
-}
-
-
-/**
- * Handler for a wire format.
- */
-struct FormatHandler
-{
-  /**
-   * Type handled by this format handler.
-   */
-  const char *type;
-
-  /**
-   * Function to call to evaluate the format.
-   *
-   * @param wire the JSON to evaluate
-   * @return #GNUNET_YES if correctly formatted; #GNUNET_NO if not
-   */
-  int (*handler)(const json_t *wire);
-};
-
-
-/**
- * Check if the given wire format JSON object is correctly formatted
- *
- * @param allowed NULL-terminated array of allowed wire format types
- * @param wire the JSON wire format object
- * @return #GNUNET_YES if correctly formatted; #GNUNET_NO if not
- */
-int
-TALER_json_validate_wireformat (const char **allowed,
-				const json_t *wire)
-{
-  static const struct FormatHandler format_handlers[] = {
-    { "SEPA", &validate_sepa },
-    { "TEST", &validate_test },
-    { NULL, NULL}
-  };
-  unsigned int i;
-  const char *stype;
-  json_error_t error;
-
-  UNPACK_EXITIF (0 != json_unpack_ex
-                 ((json_t *) wire,
-                  &error, 0,
-                  "{s:s}",
-                  "type", &stype));
-  for (i=0;NULL != allowed[i];i++)
-    if (0 == strcasecmp (allowed[i],
-                         stype))
-      break;
-  if (NULL == allowed[i])
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-                "Wireformat `%s' does not match exchange's allowed formats\n",
-                stype);
-    return GNUNET_NO;
-  }
-
-  for (i=0;NULL != format_handlers[i].type;i++)
-    if (0 == strcasecmp (format_handlers[i].type,
-                         stype))
-      return format_handlers[i].handler (wire);
-  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
-              "Wireformat `%s' not supported\n",
-              stype);
-  return GNUNET_NO;
- EXITIF_exit:
-  return GNUNET_NO;
-}
-
-/* end of wireformats.c */
-- 
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