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-rw-r--r--src/bank-lib/Makefile.am1
-rw-r--r--src/bank-lib/bank_api_parse.c4
-rw-r--r--src/bank-lib/bank_api_payto.c509
3 files changed, 512 insertions, 2 deletions
diff --git a/src/bank-lib/Makefile.am b/src/bank-lib/Makefile.am
index 35af7826..a428f5ff 100644
--- a/src/bank-lib/Makefile.am
+++ b/src/bank-lib/Makefile.am
@@ -41,6 +41,7 @@ libtalerbank_la_SOURCES = \
bank_api_credit.c \
bank_api_debit.c \
bank_api_transfer.c \
+ bank_api_payto.c \
bank_api_parse.c
libtalerbank_la_LIBADD = \
$(top_builddir)/src/json/libtalerjson.la \
diff --git a/src/bank-lib/bank_api_parse.c b/src/bank-lib/bank_api_parse.c
index 86288802..1d6b2efb 100644
--- a/src/bank-lib/bank_api_parse.c
+++ b/src/bank-lib/bank_api_parse.c
@@ -50,7 +50,7 @@ TALER_BANK_account_parse_cfg (const struct GNUNET_CONFIGURATION_Handle *cfg,
return GNUNET_SYSERR;
}
if (TALER_EC_NONE !=
- TALER_WIRE_payto_to_account (account_url,
+ TALER_BANK_payto_to_account (account_url,
acc))
{
GNUNET_log_config_invalid (GNUNET_ERROR_TYPE_ERROR,
@@ -67,7 +67,7 @@ TALER_BANK_account_parse_cfg (const struct GNUNET_CONFIGURATION_Handle *cfg,
"URL",
"Malformed payto:// URL for x-taler-bank method");
GNUNET_free (account_url);
- TALER_WIRE_account_free (acc);
+ TALER_BANK_account_free (acc);
return GNUNET_SYSERR;
}
GNUNET_free (account_url);
diff --git a/src/bank-lib/bank_api_payto.c b/src/bank-lib/bank_api_payto.c
new file mode 100644
index 00000000..5f87eb79
--- /dev/null
+++ b/src/bank-lib/bank_api_payto.c
@@ -0,0 +1,509 @@
+/*
+ This file is part of TALER
+ (C) 2015--2020 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 bank-lib/bank_api_payto.c
+ * @brief Functions for parsing payto:// URIs
+ * @author Christian Grothoff <christian@grothoff.org>
+ */
+#include "platform.h"
+#include "taler_util.h"
+#include "taler_bank_service.h"
+
+/**
+ * Maximum legal 'value' for an account number, based on IEEE double (for JavaScript compatibility).
+ */
+#define MAX_ACCOUNT_NO (1LLU << 52)
+
+
+/**
+ * Release memory allocated in @a acc.
+ *
+ * @param acc account to free, the pointer itself is NOT free'd.
+ */
+void
+TALER_BANK_account_free (struct TALER_Account *acc)
+{
+ switch (acc->type)
+ {
+ case TALER_PAC_NONE:
+ return;
+ case TALER_PAC_X_TALER_BANK:
+ GNUNET_free (acc->details.x_taler_bank.hostname);
+ acc->details.x_taler_bank.hostname = NULL;
+ GNUNET_free (acc->details.x_taler_bank.account_base_url);
+ acc->details.x_taler_bank.account_base_url = NULL;
+ break;
+ case TALER_PAC_IBAN:
+ GNUNET_free (acc->details.iban.number);
+ acc->details.iban.number = NULL;
+ break;
+ }
+ acc->type = TALER_PAC_NONE;
+}
+
+
+/* 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 strncmp()'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 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 CountryTableEntry cc_entry;
+ unsigned int len;
+ char *nbuf;
+ unsigned long long dividend;
+ unsigned long long remainder;
+ int nread;
+ int ret;
+ unsigned int i;
+ unsigned int j;
+
+ len = strlen (iban);
+ if (len > 34)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "IBAN number too long to be valid\n");
+ 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 CountryTableEntry),
+ sizeof (struct CountryTableEntry),
+ &cmp_country_code))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Country code `%c%c' not supported\n",
+ cc[0],
+ cc[1]);
+ return GNUNET_NO;
+ }
+ 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_free (nbuf);
+ return GNUNET_NO;
+ }
+ j += 2;
+ continue;
+ }
+ nbuf[j] = ibancpy[i];
+ j++;
+ }
+ for (j = 0; '\0' != nbuf[j]; j++)
+ GNUNET_assert (isdigit ( (unsigned char) nbuf[j]));
+ GNUNET_assert (sizeof(dividend) >= 8);
+ remainder = 0;
+ for (unsigned int i = 0; i<j; i += 16)
+ {
+ if (1 !=
+ (ret = sscanf (&nbuf[i],
+ "%16llu %n",
+ &dividend,
+ &nread)))
+ {
+ GNUNET_free (nbuf);
+ GNUNET_break_op (0);
+ return GNUNET_NO;
+ }
+ if (0 != remainder)
+ dividend += remainder * (pow (10, nread));
+ remainder = dividend % 97;
+ }
+ GNUNET_free (nbuf);
+ if (1 == remainder)
+ return GNUNET_YES;
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "IBAN checksum wrong\n");
+ return GNUNET_NO;
+}
+
+
+/**
+ * Parse payto://iban/ account URL (only account information,
+ * wire subject and amount are ignored).
+ *
+ * @param account_url URL to parse
+ * @param account[out] set to information, can be NULL
+ * @return #TALER_EC_NONE if @a account_url is well-formed
+ */
+static enum TALER_ErrorCode
+parse_payto_iban (const char *account_url,
+ struct TALER_Account *account)
+{
+ const char *iban;
+ const char *q;
+ char *result;
+
+#define PREFIX "payto://iban/"
+ if (0 != strncasecmp (account_url,
+ PREFIX,
+ strlen (PREFIX)))
+ return TALER_EC_PAYTO_WRONG_METHOD;
+ iban = &account_url[strlen (PREFIX)];
+#undef PREFIX
+ q = strchr (iban,
+ '?');
+ if (NULL != q)
+ {
+ result = GNUNET_strndup (iban,
+ q - iban);
+ }
+ else
+ {
+ result = GNUNET_strdup (iban);
+ }
+ if (GNUNET_OK !=
+ validate_iban (result))
+ {
+ GNUNET_free (result);
+ return TALER_EC_PAYTO_MALFORMED;
+ }
+ if (NULL != account)
+ {
+ account->type = TALER_PAC_IBAN;
+ account->details.iban.number = result;
+ }
+ else
+ {
+ GNUNET_free (result);
+ }
+ return TALER_EC_NONE;
+}
+
+
+/**
+ * Parse payto://x-taler-bank/ account URL (only account information,
+ * wire subject and amount are ignored).
+ *
+ * @param account_url URL to parse
+ * @param account[out] set to information, can be NULL
+ * @return #TALER_EC_NONE if @a account_url is well-formed
+ */
+static enum TALER_ErrorCode
+parse_payto_x_taler_bank (const char *account_url,
+ struct TALER_Account *r_account)
+{
+ const char *hostname;
+ const char *account;
+ const char *q;
+ unsigned int port;
+ char *p;
+
+#define PREFIX "payto://x-taler-bank/"
+ if (0 != strncasecmp (account_url,
+ PREFIX,
+ strlen (PREFIX)))
+ return TALER_EC_PAYTO_WRONG_METHOD;
+ hostname = &account_url[strlen (PREFIX)];
+ if (NULL == (account = strchr (hostname,
+ (unsigned char) '/')))
+ return TALER_EC_PAYTO_MALFORMED;
+ account++;
+ if (NULL == r_account)
+ return TALER_EC_NONE;
+ q = strchr (account,
+ (unsigned char) '?');
+ if (0 == q)
+ q = account + strlen (account);
+ r_account->details.x_taler_bank.hostname
+ = GNUNET_strndup (hostname,
+ account - hostname);
+ port = 443; /* if non given, equals 443. */
+ if (NULL != (p = strchr (r_account->details.x_taler_bank.hostname,
+ (unsigned char) ':')))
+ {
+ p++;
+ if (1 != sscanf (p,
+ "%u",
+ &port))
+ {
+ GNUNET_break (0);
+ TALER_LOG_ERROR ("Malformed host from payto:// URI\n");
+ GNUNET_free (r_account->details.x_taler_bank.hostname);
+ r_account->details.x_taler_bank.hostname = NULL;
+ return TALER_EC_PAYTO_MALFORMED;
+ }
+ }
+ if (443 != port)
+ {
+ GNUNET_assert
+ (GNUNET_SYSERR != GNUNET_asprintf
+ (&r_account->details.x_taler_bank.account_base_url,
+ "http://%s/%.*s",
+ r_account->details.x_taler_bank.hostname,
+ (int) (q - account),
+ account));
+ }
+ else
+ {
+ GNUNET_assert
+ (GNUNET_SYSERR != GNUNET_asprintf
+ (&r_account->details.x_taler_bank.account_base_url,
+ "https://%s/%.*s",
+ r_account->details.x_taler_bank.hostname,
+ (int) (q - account),
+ account));
+ }
+ r_account->type = TALER_PAC_X_TALER_BANK;
+ return TALER_EC_NONE;
+}
+
+
+typedef enum TALER_ErrorCode
+(*Parser)(const char *account_url,
+ struct TALER_Account *r_account);
+
+/**
+ * Parse @a payto_url and store the result in @a acc
+ *
+ * @param payto_url URL to parse
+ * @param acc[in,out] account to initialize, free using #TALER_BANK_account_free() later
+ * @return #TALER_EC_NONE if @a payto_url is well-formed
+ */
+enum TALER_ErrorCode
+TALER_BANK_payto_to_account (const char *payto_url,
+ struct TALER_Account *acc)
+{
+ Parser parsers[] = {
+ &parse_payto_x_taler_bank,
+ &parse_payto_iban,
+ NULL
+ };
+
+ for (unsigned int i = 0; NULL != parsers[i]; i++)
+ {
+ enum TALER_ErrorCode ec = parsers[i](payto_url,
+ acc);
+ if (TALER_EC_PAYTO_WRONG_METHOD == ec)
+ continue;
+ return ec;
+ }
+ return TALER_EC_PAYTO_WRONG_METHOD;
+}
+
+
+/* end of payto.c */
generated by cgit v1.2.3 (git 2.39.1) at 2025-10-31 19:59:51 +0000