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-rw-r--r--src/wire/Makefile.am10
-rw-r--r--src/wire/plugin_wire_sepa.c537
2 files changed, 547 insertions, 0 deletions
diff --git a/src/wire/Makefile.am b/src/wire/Makefile.am
index 64f50d97f..a8bc4af69 100644
--- a/src/wire/Makefile.am
+++ b/src/wire/Makefile.am
@@ -9,6 +9,7 @@ endif
plugindir = $(libdir)/taler
plugin_LTLIBRARIES = \
+ libtaler_plugin_wire_sepa.la \
libtaler_plugin_wire_test.la
noinst_LTLIBRARIES = \
@@ -26,6 +27,15 @@ libtaler_plugin_wire_test_la_LDFLAGS = \
-lgnunetutil $(XLIB)
+libtaler_plugin_wire_sepa_la_SOURCES = \
+ plugin_wire_sepa.c
+libtaler_plugin_wire_sepa_la_LIBADD = \
+ $(LTLIBINTL)
+libtaler_plugin_wire_sepa_la_LDFLAGS = \
+ $(TALER_PLUGIN_LDFLAGS) \
+ $(top_builddir)/src/util/libtalerutil.la \
+ -lgnunetutil $(XLIB)
+
libtaler_plugin_wire_template_la_SOURCES = \
plugin_wire_template.c
diff --git a/src/wire/plugin_wire_sepa.c b/src/wire/plugin_wire_sepa.c
new file mode 100644
index 000000000..1867c0483
--- /dev/null
+++ b/src/wire/plugin_wire_sepa.c
@@ -0,0 +1,537 @@
+/*
+ This file is part of TALER
+ Copyright (C) 2016 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 plugin_wire_sepa.c
+ * @brief wire plugin for transfers using SEPA/EBICS
+ * @author Florian Dold
+ * @author Christian Grothoff
+ * @author Sree Harsha Totakura
+ */
+#include "platform.h"
+#include "taler_wire_plugin.h"
+
+
+/**
+ * Type of the "cls" argument given to each of the functions in
+ * our API.
+ */
+struct SepaClosure
+{
+
+ /**
+ * Which currency do we support?
+ */
+ char *currency;
+
+};
+
+
+/**
+ * Round amount DOWN to the amount that can be transferred via the wire
+ * method. For example, Taler may support 0.000001 EUR as a unit of
+ * payment, but SEPA only supports 0.01 EUR. This function would
+ * round 0.125 EUR to 0.12 EUR in this case.
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state
+ * @param[in,out] amount amount to round down
+ * @return #GNUNET_OK on success, #GNUNET_NO if rounding was unnecessary,
+ * #GNUNET_SYSERR if the amount or currency was invalid
+ */
+static int
+sepa_amount_round (void *cls,
+ struct TALER_Amount *amount)
+{
+ struct SepaClosure *sc = cls;
+ uint32_t delta;
+
+ if (0 != strcasecmp (amount->currency,
+ sc->currency))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ delta = amount->fraction % (TALER_AMOUNT_FRAC_BASE / 100);
+ if (0 == delta)
+ return GNUNET_NO;
+ amount->fraction -= delta;
+ return GNUNET_SYSERR;
+}
+
+
+/* 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]))
+ {
+ if (2 != snprintf(&nbuf[j],
+ 3,
+ "%2u",
+ (ibancpy[i] - 'A' + 10)))
+ {
+ GNUNET_free (nbuf);
+ return GNUNET_NO;
+ }
+ 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)
+ {
+ if (1 !=
+ (ret = sscanf (&nbuf[i],
+ "%16llu %n",
+ &dividend,
+ &nread)))
+ {
+ GNUNET_free (nbuf);
+ return GNUNET_NO;
+ }
+ if (0 != remainder)
+ dividend += remainder * (pow (10, nread));
+ remainder = dividend % 97;
+ }
+ GNUNET_free (nbuf);
+ if (1 == remainder)
+ return GNUNET_YES;
+ return GNUNET_NO;
+}
+
+
+/**
+ * Check if the given wire format JSON object is correctly formatted
+ *
+ * @param wire the JSON wire format object
+ * @return #GNUNET_YES if correctly formatted; #GNUNET_NO if not
+ */
+static int
+sepa_wire_validate (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;
+
+ if (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))
+ {
+ TALER_json_warn (error);
+ return GNUNET_SYSERR;
+ }
+ if (1 != validate_iban (iban))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "IBAN `%s' invalid\n",
+ iban);
+ return GNUNET_NO;
+ }
+ return GNUNET_YES;
+}
+
+
+/**
+ * Prepare for exeuction of a wire transfer.
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state
+ * @param wire valid wire account information
+ * @param amount amount to transfer, already rounded
+ * @param wtid wire transfer identifier to use
+ * @param psc function to call with the prepared data to persist
+ * @param psc_cls closure for @a psc
+ * @return NULL on failure
+ */
+static struct TALER_WIRE_PrepareHandle *
+sepa_prepare_wire_transfer (void *cls,
+ const json_t *wire,
+ const struct TALER_Amount *amount,
+ const struct TALER_WireTransferIdentifierRawP *wtid,
+ TALER_WIRE_PrepareTransactionCallback psc,
+ void *psc_cls)
+{
+ GNUNET_break (0); // FIXME: not implemented
+ return NULL;
+}
+
+
+/**
+ * Abort preparation of a wire transfer. For example,
+ * because we are shutting down.
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state
+ * @param pth preparation to cancel
+ */
+static void
+sepa_prepare_wire_transfer_cancel (void *cls,
+ struct TALER_WIRE_PrepareHandle *pth)
+{
+ GNUNET_break (0); // FIXME: not implemented
+}
+
+
+/**
+ * Execute a wire transfer.
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state
+ * @param buf buffer with the prepared execution details
+ * @param buf_size number of bytes in @a buf
+ * @param cc function to call upon success
+ * @param cc_cls closure for @a cc
+ * @return NULL on error
+ */
+static struct TALER_WIRE_ExecuteHandle *
+sepa_execute_wire_transfer (void *cls,
+ const char *buf,
+ size_t buf_size,
+ TALER_WIRE_ConfirmationCallback cc,
+ void *cc_cls)
+{
+ GNUNET_break (0); // FIXME: not implemented
+ return NULL;
+}
+
+
+/**
+ * Abort execution of a wire transfer. For example, because we are
+ * shutting down. Note that if an execution is aborted, it may or
+ * may not still succeed. The caller MUST run @e
+ * execute_wire_transfer again for the same request as soon as
+ * possilbe, to ensure that the request either ultimately succeeds
+ * or ultimately fails. Until this has been done, the transaction is
+ * in limbo (i.e. may or may not have been committed).
+ *
+ * @param cls the @e cls of this struct with the plugin-specific state
+ * @param eh execution to cancel
+ */
+static void
+sepa_execute_wire_transfer_cancel (void *cls,
+ struct TALER_WIRE_ExecuteHandle *eh)
+{
+ GNUNET_break (0); // FIXME: not implemented
+}
+
+
+/**
+ * Initialize sepa-wire subsystem.
+ *
+ * @param cls a configuration instance
+ * @return NULL on error, otherwise a `struct TALER_WIRE_Plugin`
+ */
+void *
+libtaler_plugin_wire_sepa_init (void *cls)
+{
+ struct GNUNET_CONFIGURATION_Handle *cfg = cls;
+ struct SepaClosure *sc;
+ struct TALER_WIRE_Plugin *plugin;
+
+ sc = GNUNET_new (struct SepaClosure);
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_string (cfg,
+ "mint",
+ "CURRENCY",
+ &sc->currency))
+ {
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ "mint",
+ "CURRENCY");
+ GNUNET_free (sc);
+ return NULL;
+ }
+
+ plugin = GNUNET_new (struct TALER_WIRE_Plugin);
+ plugin->cls = sc;
+ plugin->amount_round = &sepa_amount_round;
+ plugin->wire_validate = &sepa_wire_validate;
+ plugin->prepare_wire_transfer = &sepa_prepare_wire_transfer;
+ plugin->prepare_wire_transfer_cancel = &sepa_prepare_wire_transfer_cancel;
+ plugin->execute_wire_transfer = &sepa_execute_wire_transfer;
+ plugin->execute_wire_transfer_cancel = &sepa_execute_wire_transfer_cancel;
+ return plugin;
+}
+
+
+/**
+ * Shutdown Sepa wire subsystem.
+ *
+ * @param cls a `struct TALER_WIRE_Plugin`
+ * @return NULL (always)
+ */
+void *
+libtaler_plugin_wire_sepa_done (void *cls)
+{
+ struct TALER_WIRE_Plugin *plugin = cls;
+ struct SepaClosure *sc = plugin->cls;
+
+ GNUNET_free (sc->currency);
+ GNUNET_free (sc);
+ GNUNET_free (plugin);
+ return NULL;
+}
+
+/* end of plugin_wire_sepa.c */
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-06 19:29:28 +0000