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-rw-r--r--src/.gitignore9
-rw-r--r--src/Makefile614
-rw-r--r--src/Makefile.am2
-rw-r--r--src/Makefile.in614
-rw-r--r--src/include/Makefile435
-rw-r--r--src/include/Makefile.am2
-rw-r--r--src/include/Makefile.in435
-rw-r--r--src/include/platform.h56
-rw-r--r--src/merchant/.gitignore1
-rw-r--r--src/merchant/Makefile731
-rw-r--r--src/merchant/Makefile.am52
-rw-r--r--src/merchant/Makefile.in731
-rw-r--r--src/merchant/merchant.c173
-rw-r--r--src/merchant/merchant.h110
-rw-r--r--src/merchant/merchant_db.c347
-rw-r--r--src/merchant/merchant_db.h98
-rw-r--r--src/merchant/taler_merchant_dbinit.c79
-rw-r--r--src/merchant/taler_merchant_serve.c1559
-rw-r--r--src/merchant/test_merchant.c96
-rw-r--r--src/merchant/test_merchant.conf36
-rw-r--r--src/merchant/test_merchant.ecc2
-rw-r--r--src/merchant/test_merchant_db.c147
22 files changed, 6329 insertions, 0 deletions
diff --git a/src/.gitignore b/src/.gitignore
new file mode 100644
index 00000000..90ea1a04
--- /dev/null
+++ b/src/.gitignore
@@ -0,0 +1,9 @@
+*.o
+*.deps
+*.libs
+*.lo
+*.la
+*.log
+*.trs
+*/__pycache__
+test-* \ No newline at end of file
diff --git a/src/Makefile b/src/Makefile
new file mode 100644
index 00000000..e8165ad1
--- /dev/null
+++ b/src/Makefile
@@ -0,0 +1,614 @@
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
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diff --git a/src/include/platform.h b/src/include/platform.h
new file mode 100644
index 00000000..4cba7abf
--- /dev/null
+++ b/src/include/platform.h
@@ -0,0 +1,56 @@
+/*
+ This file is part of TALER
+ (C) 2014 Chrisitan Grothoff (and other contributing authors)
+
+ 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 include/platform.h
+ * @brief This file contains the includes and definitions which are used by the
+ * rest of the modules
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#ifndef PLATFORM_H_
+#define PLATFORM_H_
+
+/* Include our configuration header */
+#ifndef HAVE_USED_CONFIG_H
+# define HAVE_USED_CONFIG_H
+# ifdef HAVE_CONFIG_H
+# include "taler_config.h"
+# endif
+#endif
+
+
+#if (GNUNET_EXTRA_LOGGING >= 1)
+#define VERBOSE(cmd) cmd
+#else
+#define VERBOSE(cmd) do { break; }while(0)
+#endif
+
+/* Include the features available for GNU source */
+#define _GNU_SOURCE
+
+/* Include GNUnet's platform file */
+#include <gnunet/platform.h>
+
+/* Do not use shortcuts for gcrypt mpi */
+#define GCRYPT_NO_MPI_MACROS 1
+
+/* Do not use deprecated functions from gcrypt */
+#define GCRYPT_NO_DEPRECATED 1
+
+#endif /* PLATFORM_H_ */
+
+/* end of platform.h */
diff --git a/src/merchant/.gitignore b/src/merchant/.gitignore
new file mode 100644
index 00000000..ebe41680
--- /dev/null
+++ b/src/merchant/.gitignore
@@ -0,0 +1 @@
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diff --git a/src/merchant/Makefile b/src/merchant/Makefile
new file mode 100644
index 00000000..bbc16e7b
--- /dev/null
+++ b/src/merchant/Makefile
@@ -0,0 +1,731 @@
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diff --git a/src/merchant/Makefile.am b/src/merchant/Makefile.am
new file mode 100644
index 00000000..701b3ee8
--- /dev/null
+++ b/src/merchant/Makefile.am
@@ -0,0 +1,52 @@
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+
+MERCHANT_DB = merchant_db.c merchant_db.h
+bin_PROGRAMS = \
+ taler-merchant-dbinit \
+ taler-merchant-serve
+
+taler_merchant_dbinit_SOURCES = \
+ taler_merchant_dbinit.c \
+ $(MERCHANT_DB)
+taler_merchant_dbinit_LDADD = \
+ -lpq \
+ -lgnunetutil \
+ -ltalerutil \
+ -lgnunetpostgres
+taler_merchant_dbinit_LDFLAGS = \
+ $(POSTGRESQL_LDFLAGS)
+
+check_PROGRAMS = \
+ test-merchant \
+ test-merchant-db
+
+test_merchant_SOURCES = \
+ merchant.c \
+ test_merchant.c
+test_merchant_LDADD = \
+ -ltalerutil \
+ -lgnunetutil
+
+test_merchant_db_SOURCES = \
+ $(MERCHANT_DB) \
+ test_merchant_db.c
+test_merchant_db_LDADD = \
+ -ltalerutil \
+ -lgnunetutil \
+ -lgnunetpostgres \
+ -lpq
+
+taler_merchant_serve_SOURCES = \
+ taler_merchant_serve.c \
+ merchant.c merchant.h \
+ $(MERCHANT_DB)
+taler_merchant_serve_LDADD = \
+ -lpq \
+ -lgnunetutil \
+ -lgnunetpostgres \
+ -lmicrohttpd \
+ -ltalermintapi \
+ -ltalerutil \
+ -ljansson
+taler_merchant_serve_LDFLAGS = \
+ $(POSTGRESQL_LDFLAGS)
diff --git a/src/merchant/Makefile.in b/src/merchant/Makefile.in
new file mode 100644
index 00000000..33fcb832
--- /dev/null
+++ b/src/merchant/Makefile.in
@@ -0,0 +1,731 @@
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+ else \
+ echo "$$sdir/$$i"; \
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+
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+distdir: $(DISTFILES)
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+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/src/merchant/merchant.c b/src/merchant/merchant.c
new file mode 100644
index 00000000..f124a030
--- /dev/null
+++ b/src/merchant/merchant.c
@@ -0,0 +1,173 @@
+/*
+ This file is part of TALER
+ (C) 2014 Christian Grothoff (and other contributing authors)
+
+ 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 merchant/merchant.c
+ * @brief Common utility functions for merchant
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "merchant.h"
+
+
+#define EXITIF(cond) \
+ do { \
+ if (cond) { GNUNET_break (0); goto EXITIF_exit; } \
+ } while (0)
+
+
+/**
+ * Parses mints from the configuration.
+ *
+ * @param cfg the configuration
+ * @param mints the array of mints upon successful parsing. Will be NULL upon
+ * error.
+ * @return the number of mints in the above array; GNUNET_SYSERR upon error in
+ * parsing.
+ */
+int
+TALER_MERCHANT_parse_mints (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ struct MERCHANT_MintInfo **mints)
+{
+ char *mints_str;
+ char *token_nf; /* do no free (nf) */
+ char *mint_section;
+ char *mint_hostname;
+ char *mint_pubkey_enc;
+ struct MERCHANT_MintInfo *r_mints;
+ struct MERCHANT_MintInfo mint;
+ unsigned long long mint_port;
+ unsigned int cnt;
+ int OK;
+
+ OK = 0;
+ mints_str = NULL;
+ token_nf = NULL;
+ mint_section = NULL;
+ mint_hostname = NULL;
+ mint_pubkey_enc = NULL;
+ r_mints = NULL;
+ cnt = 0;
+ EXITIF (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg,
+ "merchant",
+ "TRUSTED_MINTS",
+ &mints_str));
+ for (token_nf = strtok (mints_str, " ");
+ NULL != token_nf;
+ token_nf = strtok (NULL, " "))
+ {
+ GNUNET_assert (0 < GNUNET_asprintf (&mint_section,
+ "mint-%s", token_nf));
+ EXITIF (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_string (cfg,
+ mint_section,
+ "HOSTNAME",
+ &mint_hostname));
+ EXITIF (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_number (cfg,
+ mint_section,
+ "PORT",
+ &mint_port));
+ EXITIF (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_string (cfg,
+ mint_section,
+ "PUBKEY",
+ &mint_pubkey_enc));
+ EXITIF (GNUNET_OK !=
+ GNUNET_CRYPTO_eddsa_public_key_from_string (mint_pubkey_enc,
+ strlen (mint_pubkey_enc),
+ &mint.pubkey));
+ mint.hostname = mint_hostname;
+ mint.port = (uint16_t) mint_port;
+ GNUNET_array_append (r_mints, cnt, mint);
+ mint_hostname = NULL;
+ GNUNET_free (mint_pubkey_enc);
+ mint_pubkey_enc = NULL;
+ GNUNET_free (mint_section);
+ mint_section = NULL;
+ }
+ OK = 1;
+
+ EXITIF_exit:
+ GNUNET_free_non_null (mints_str);
+ GNUNET_free_non_null (mint_section);
+ GNUNET_free_non_null (mint_hostname);
+ GNUNET_free_non_null (mint_pubkey_enc);
+ if (!OK)
+ {
+ GNUNET_free_non_null (r_mints);
+ return GNUNET_SYSERR;
+ }
+
+ *mints = r_mints;
+ return cnt;
+}
+
+
+/**
+ * Parse the SEPA information from the configuration. If any of the required
+ * fileds is missing return NULL.
+ *
+ * @param cfg the configuration
+ * @return Sepa details as a structure; NULL upon error
+ */
+struct MERCHANT_WIREFORMAT_Sepa *
+TALER_MERCHANT_parse_wireformat_sepa (const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ struct MERCHANT_WIREFORMAT_Sepa *wf;
+
+ wf = GNUNET_new (struct MERCHANT_WIREFORMAT_Sepa);
+ EXITIF (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg,
+ "wire-sepa",
+ "IBAN",
+ &wf->iban));
+ EXITIF (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg,
+ "wire-sepa",
+ "NAME",
+ &wf->name));
+ EXITIF (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (cfg,
+ "wire-sepa",
+ "BIC",
+ &wf->bic));
+ return wf;
+
+ EXITIF_exit:
+ GNUNET_free_non_null (wf->iban);
+ GNUNET_free_non_null (wf->name);
+ GNUNET_free_non_null (wf->bic);
+ GNUNET_free (wf);
+ return NULL;
+
+}
+
+
+/**
+ * Destroy and free resouces occupied by the wireformat structure
+ *
+ * @param wf the wireformat structure
+ */
+void
+TALER_MERCHANT_destroy_wireformat_sepa (struct MERCHANT_WIREFORMAT_Sepa *wf)
+{
+ GNUNET_free_non_null (wf->iban);
+ GNUNET_free_non_null (wf->name);
+ GNUNET_free_non_null (wf->bic);
+ GNUNET_free (wf);
+}
+
+/* end of merchant.c */
diff --git a/src/merchant/merchant.h b/src/merchant/merchant.h
new file mode 100644
index 00000000..c66131ed
--- /dev/null
+++ b/src/merchant/merchant.h
@@ -0,0 +1,110 @@
+/*
+ This file is part of TALER
+ (C) 2014 Christian Grothoff (and other contributing authors)
+
+ 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 merchant/merchant.c
+ * @brief Common utility functions for merchant
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#ifndef MERCHANT_H
+#define MERCHANT_H
+
+#include <gnunet/gnunet_common.h>
+#include <gnunet/gnunet_crypto_lib.h>
+
+/**
+ * A mint
+ */
+struct MERCHANT_MintInfo {
+ /**
+ * Hostname
+ */
+ char *hostname;
+
+ /**
+ * The public key of the mint
+ */
+ struct GNUNET_CRYPTO_EddsaPublicKey pubkey;
+
+ /**
+ * The port where the mint's service is running
+ */
+ uint16_t port;
+
+};
+
+
+/**
+ * Parses mints from the configuration.
+ *
+ * @param cfg the configuration
+ * @param mints the array of mints upon successful parsing. Will be NULL upon
+ * error.
+ * @return the number of mints in the above array; GNUNET_SYSERR upon error in
+ * parsing.
+ */
+int
+TALER_MERCHANT_parse_mints (const struct GNUNET_CONFIGURATION_Handle *cfg,
+ struct MERCHANT_MintInfo **mints);
+
+
+GNUNET_NETWORK_STRUCT_BEGIN
+struct MERCHANT_WIREFORMAT_Sepa
+{
+ /**
+ * The international bank account number
+ */
+ char *iban;
+
+ /**
+ * Name of the bank account holder
+ */
+ char *name;
+
+ /**
+ *The bank identification code
+ */
+ char *bic;
+
+ /**
+ * The latest payout date when the payment corresponding to this account has
+ * to take place. A value of 0 indicates a transfer as soon as possible.
+ */
+ struct GNUNET_TIME_AbsoluteNBO payout;
+};
+GNUNET_NETWORK_STRUCT_END
+
+/**
+ * Parse the SEPA information from the configuration. If any of the required
+ * fileds is missing return NULL.
+ *
+ * @param cfg the configuration
+ * @return Sepa details as a structure; NULL upon error
+ */
+struct MERCHANT_WIREFORMAT_Sepa *
+TALER_MERCHANT_parse_wireformat_sepa (const struct GNUNET_CONFIGURATION_Handle *cfg);
+
+
+/**
+ * Destroy and free resouces occupied by the wireformat structure
+ *
+ * @param wf the wireformat structure
+ */
+void
+TALER_MERCHANT_destroy_wireformat_sepa (struct MERCHANT_WIREFORMAT_Sepa *wf);
+
+#endif /* MERCHANT_H */
diff --git a/src/merchant/merchant_db.c b/src/merchant/merchant_db.c
new file mode 100644
index 00000000..1b2fe720
--- /dev/null
+++ b/src/merchant/merchant_db.c
@@ -0,0 +1,347 @@
+/*
+ This file is part of TALER
+ (C) 2014 Christian Grothoff (and other contributing authors)
+
+ 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 merchant/merchant_db.c
+ * @brief database helper functions used by the merchant
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include <taler/taler_util.h>
+#include <taler/taler_db_lib.h>
+#include "merchant_db.h"
+
+
+#define PQSQL_strerror(kind, cmd, res) \
+ GNUNET_log_from (kind, "merchant-db", \
+ "SQL %s failed at %s:%u with error: %s", \
+ cmd, __FILE__, __LINE__, PQresultErrorMessage (res));
+
+/**
+ * Shorthand for exit jumps.
+ */
+#define EXITIF(cond) \
+ do { \
+ if (cond) { GNUNET_break (0); goto EXITIF_exit; } \
+ } while (0)
+
+
+/**
+ * Connect to postgresql database
+ *
+ * @param cfg the configuration handle
+ * @return connection to the postgresql database; NULL upon error
+ */
+PGconn *
+MERCHANT_DB_connect (const struct GNUNET_CONFIGURATION_Handle *cfg)
+{
+ return GNUNET_POSTGRES_connect (cfg, "merchant-db");
+}
+
+
+/**
+ * Disconnect from the database
+ *
+ * @param conn database handle to close
+ */
+void
+MERCHANT_DB_disconnect (PGconn *conn)
+{
+ PQfinish (conn);
+}
+
+
+/**
+ * Initialise merchant tables
+ *
+ * @param conn the connection handle to postgres db.
+ * @param tmp GNUNET_YES if the tables are to be made temporary i.e. their
+ * contents are dropped when the @a conn is closed
+ * @return GNUNET_OK upon success; GNUNET_SYSERR upon failure
+ */
+int
+MERCHANT_DB_initialise (PGconn *conn, int tmp)
+{
+ const char *tmp_str = (1 == tmp) ? "TEMPORARY" : "";
+ char *sql;
+ PGresult *res;
+ ExecStatusType status;
+ int ret;
+
+ res = NULL;
+ (void) GNUNET_asprintf (&sql,
+ "BEGIN TRANSACTION;"
+ "CREATE %1$s TABLE IF NOT EXISTS contracts ("
+ "transaction_id SERIAL8 PRIMARY KEY,"
+ "amount INT4 NOT NULL,"
+ "amount_fraction INT4 NOT NULL,"
+ "description TEXT NOT NULL,"
+ "nounce BYTEA NOT NULL,"
+ "expiry INT8 NOT NULL,"
+ "product INT8 NOT NULL);"
+ "CREATE %1$s TABLE IF NOT EXISTS checkouts ("
+ "coin_pub BYTEA PRIMARY KEY,"
+ "transaction_id INT8 REFERENCES contracts(transaction_id),"
+ "amount INT4 NOT NULL,"
+ "amount_fraction INT4 NOT NULL,"
+ "coin_sig BYTEA NOT NULL);",
+ tmp_str);
+ ret = GNUNET_POSTGRES_exec (conn, sql);
+ (void) GNUNET_POSTGRES_exec (conn,
+ (GNUNET_OK == ret) ? "COMMIT;" : "ROLLBACK");
+ GNUNET_free (sql);
+ if (GNUNET_OK != ret)
+ return ret;
+
+ while (NULL != (res = PQgetResult (conn)))
+ {
+ status = PQresultStatus (res);
+ PQclear (res);
+ }
+
+ EXITIF (NULL == (res = PQprepare
+ (conn,
+ "contract_create",
+ "INSERT INTO contracts"
+ "(amount, amount_fraction, description,"
+ "nounce, expiry, product) VALUES"
+ "($1, $2, $3, $4, $5, $6)"
+ "RETURNING transaction_id",
+ 6, NULL)));
+ EXITIF (PGRES_COMMAND_OK != (status = PQresultStatus(res)));
+ PQclear (res);
+
+ EXITIF (NULL == (res = PQprepare
+ (conn,
+ "get_contract_product",
+ "SELECT ("
+ "product"
+ ") FROM contracts "
+ "WHERE ("
+ "transaction_id=$1"
+ ")",
+ 1, NULL)));
+ EXITIF (PGRES_COMMAND_OK != (status = PQresultStatus(res)));
+ PQclear (res);
+
+ EXITIF (NULL == (res = PQprepare
+ (conn,
+ "checkout_create",
+ "INSERT INTO checkouts ("
+ "coin_pub,"
+ "transaction_id,"
+ "amount,"
+ "amount_fraction,"
+ "coin_sig"
+ ") VALUES ("
+ "$1, $2, $3, $4, $5"
+ ")",
+ 5, NULL)));
+ EXITIF (PGRES_COMMAND_OK != (status = PQresultStatus (res)));
+ PQclear (res);
+
+ EXITIF (NULL == (res = PQprepare
+ (conn,
+ "get_checkout_product",
+ "SELECT ("
+ "product"
+ ") FROM contracts "
+ "WHERE "
+ "transaction_id IN ("
+ "SELECT (transaction_id) FROM checkouts "
+ "WHERE coin_pub=$1"
+ ")",
+ 1, NULL)));
+ EXITIF (PGRES_COMMAND_OK != (status = PQresultStatus (res)));
+ PQclear (res);
+
+ return GNUNET_OK;
+
+ EXITIF_exit:
+ if (NULL != res)
+ {
+ PQSQL_strerror (GNUNET_ERROR_TYPE_ERROR, "PQprepare", res);
+ PQclear (res);
+ }
+ return GNUNET_SYSERR;
+}
+
+
+/**
+ * Inserts a contract record into the database and if successfull returns the
+ * serial number of the inserted row.
+ *
+ * @param conn the database connection
+ * @param expiry the time when the contract will expire
+ * @param amount the taler amount corresponding to the contract
+ * @param desc descripition of the contract
+ * @param nounce a random 64-bit nounce
+ * @param product description to identify a product
+ * @return -1 upon error; the serial id of the inserted contract upon success
+ */
+long long
+MERCHANT_DB_contract_create (PGconn *conn,
+ struct GNUNET_TIME_Absolute expiry,
+ struct TALER_Amount *amount,
+ const char *desc,
+ uint64_t nounce,
+ uint64_t product)
+{
+ PGresult *res;
+ uint64_t expiry_ms_nbo;
+ uint32_t value_nbo;
+ uint32_t fraction_nbo;
+ uint64_t nounce_nbo;
+ ExecStatusType status;
+ long long id;
+ struct TALER_DB_QueryParam params[] = {
+ TALER_DB_QUERY_PARAM_PTR (&value_nbo),
+ TALER_DB_QUERY_PARAM_PTR (&fraction_nbo),
+ TALER_DB_QUERY_PARAM_PTR_SIZED (desc, strlen(desc)),
+ TALER_DB_QUERY_PARAM_PTR (&nounce_nbo),
+ TALER_DB_QUERY_PARAM_PTR (&expiry_ms_nbo),
+ TALER_DB_QUERY_PARAM_PTR (&product),
+ TALER_DB_QUERY_PARAM_END
+ };
+ struct TALER_DB_ResultSpec rs[] = {
+ TALER_DB_RESULT_SPEC("transaction_id", &id),
+ TALER_DB_RESULT_SPEC_END
+ };
+
+ expiry_ms_nbo = GNUNET_htonll (expiry.abs_value_us);
+ value_nbo = htonl (amount->value);
+ fraction_nbo = htonl (amount->fraction);
+ nounce_nbo = GNUNET_htonll (nounce);
+ product = GNUNET_htonll (product);
+ res = TALER_DB_exec_prepared (conn, "contract_create", params);
+ status = PQresultStatus (res);
+ EXITIF (PGRES_TUPLES_OK != status);
+ EXITIF (1 != PQntuples (res));
+ EXITIF (GNUNET_YES != TALER_DB_extract_result (res, rs, 0));
+ PQclear (res);
+ return GNUNET_ntohll ((uint64_t) id);
+
+ EXITIF_exit:
+ PQclear (res);
+ return -1;
+}
+
+long long
+MERCHANT_DB_get_contract_product (PGconn *conn,
+ uint64_t contract_id)
+{
+ PGresult *res;
+ int64_t product;
+ ExecStatusType status;
+ struct TALER_DB_QueryParam params[] = {
+ TALER_DB_QUERY_PARAM_PTR (&contract_id),
+ TALER_DB_QUERY_PARAM_END
+ };
+ struct TALER_DB_ResultSpec rs[] = {
+ TALER_DB_RESULT_SPEC("product", &product),
+ TALER_DB_RESULT_SPEC_END
+ };
+
+ contract_id = GNUNET_htonll (contract_id);
+ res = TALER_DB_exec_prepared (conn, "get_contract_product", params);
+ status = PQresultStatus (res);
+ EXITIF (PGRES_TUPLES_OK != status);
+ EXITIF (1 != PQntuples (res));
+ EXITIF (GNUNET_YES != TALER_DB_extract_result (res, rs, 0));
+ PQclear (res);
+ return GNUNET_ntohll ((uint64_t) product);
+
+ EXITIF_exit:
+ PQclear (res);
+ return -1;
+}
+
+unsigned int
+MERCHANT_DB_checkout_create (PGconn *conn,
+ struct GNUNET_CRYPTO_EddsaPublicKey *coin_pub,
+ uint64_t transaction_id,
+ struct TALER_Amount *amount,
+ struct GNUNET_CRYPTO_EddsaSignature *coin_sig)
+{
+ PGresult *res;
+ ExecStatusType status;
+ uint32_t value_nbo;
+ uint32_t fraction_nbo;
+ struct TALER_DB_QueryParam params[] = {
+ TALER_DB_QUERY_PARAM_PTR (coin_pub),
+ TALER_DB_QUERY_PARAM_PTR (&transaction_id),
+ TALER_DB_QUERY_PARAM_PTR (&value_nbo),
+ TALER_DB_QUERY_PARAM_PTR (&fraction_nbo),
+ TALER_DB_QUERY_PARAM_PTR (coin_sig),
+ TALER_DB_QUERY_PARAM_END
+ };
+
+ transaction_id = GNUNET_htonll (transaction_id);
+ value_nbo = htonl (amount->value);
+ fraction_nbo = htonl (amount->fraction);
+ res = TALER_DB_exec_prepared (conn, "checkout_create", params);
+ status = PQresultStatus (res);
+ EXITIF (PGRES_COMMAND_OK != status);
+ PQclear (res);
+ return GNUNET_OK;
+
+ EXITIF_exit:
+ PQclear (res);
+ return GNUNET_SYSERR;
+}
+
+
+long long
+MERCHANT_DB_get_checkout_product (PGconn *conn,
+ struct GNUNET_CRYPTO_EddsaPublicKey *coin_pub)
+{
+ PGresult *res;
+ ExecStatusType status;
+ uint64_t product;
+ struct TALER_DB_QueryParam params[] = {
+ TALER_DB_QUERY_PARAM_PTR (coin_pub),
+ TALER_DB_QUERY_PARAM_END
+ };
+ struct TALER_DB_ResultSpec rs[] = {
+ TALER_DB_RESULT_SPEC("product", &product),
+ TALER_DB_RESULT_SPEC_END
+ };
+
+ product = -1;
+ res = TALER_DB_exec_prepared (conn, "get_checkout_product", params);
+ status = PQresultStatus (res);
+ EXITIF (PGRES_TUPLES_OK != status);
+ if (0 == PQntuples (res))
+ {
+ char *coin_pub_enc;
+ coin_pub_enc = GNUNET_CRYPTO_eddsa_public_key_to_string (coin_pub);
+ LOG_DEBUG ("Checkout not found for given coin: %s\n",
+ coin_pub_enc);
+ GNUNET_free (coin_pub_enc);
+ goto EXITIF_exit;
+ }
+ EXITIF (1 != PQntuples (res));
+ EXITIF (GNUNET_YES != TALER_DB_extract_result (res, rs, 0));
+ PQclear (res);
+ return GNUNET_ntohll ((uint64_t) product);
+
+ EXITIF_exit:
+ PQclear (res);
+ return -1;
+}
+/* end of merchant-db.c */
diff --git a/src/merchant/merchant_db.h b/src/merchant/merchant_db.h
new file mode 100644
index 00000000..734d547f
--- /dev/null
+++ b/src/merchant/merchant_db.h
@@ -0,0 +1,98 @@
+/*
+ This file is part of TALER
+ (C) 2014 Christian Grothoff (and other contributing authors)
+
+ 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 merchant/merchant_db.h
+ * @brief database helper functions used by the merchant
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#ifndef MERCHANT_DB_H
+#define MERCHANT_DB_H
+
+#include <gnunet/gnunet_postgres_lib.h>
+#include <taler/taler_util.h>
+
+/**
+ * Connect to postgresql database
+ *
+ * @param cfg the configuration handle
+ * @return connection to the postgresql database; NULL upon error
+ */
+PGconn *
+MERCHANT_DB_connect (const struct GNUNET_CONFIGURATION_Handle *cfg);
+
+
+/**
+ * Disconnect from the database
+ *
+ * @param conn database handle to close
+ */
+void
+MERCHANT_DB_disconnect (PGconn *conn);
+
+
+/**
+ * Initialise merchant tables
+ *
+ * @param conn the connection handle to postgres db.
+ * @param tmp GNUNET_YES if the tables are to be made temporary i.e. their
+ * contents are dropped when the @a conn is closed
+ * @return GNUNET_OK upon success; GNUNET_SYSERR upon failure
+ */
+int
+MERCHANT_DB_initialise (PGconn *conn, int tmp);
+
+
+/**
+ * Inserts a contract record into the database and if successfull returns the
+ * serial number of the inserted row.
+ *
+ * @param conn the database connection
+ * @param expiry the time when the contract will expire
+ * @param amount the taler amount corresponding to the contract
+ * @param desc descripition of the contract
+ * @param nounce a random 64-bit nounce
+ * @param product description to identify a product
+ * @return -1 upon error; the serial id of the inserted contract upon success
+ */
+long long
+MERCHANT_DB_contract_create (PGconn *conn,
+ struct GNUNET_TIME_Absolute expiry,
+ struct TALER_Amount *amount,
+ const char *desc,
+ uint64_t nounce,
+ uint64_t product);
+
+long long
+MERCHANT_DB_get_contract_product (PGconn *conn,
+ uint64_t contract_id);
+
+unsigned int
+MERCHANT_DB_checkout_create (PGconn *conn,
+ struct GNUNET_CRYPTO_EddsaPublicKey *coin_pub,
+ uint64_t transaction_id,
+ struct TALER_Amount *amount,
+ struct GNUNET_CRYPTO_EddsaSignature *coin_sig);
+
+
+long long
+MERCHANT_DB_get_checkout_product (PGconn *conn,
+ struct GNUNET_CRYPTO_EddsaPublicKey *coin_pub);
+
+#endif /* MERCHANT_DB_H */
+
+/* end of merchant-db.h */
diff --git a/src/merchant/taler_merchant_dbinit.c b/src/merchant/taler_merchant_dbinit.c
new file mode 100644
index 00000000..e6d0af9d
--- /dev/null
+++ b/src/merchant/taler_merchant_dbinit.c
@@ -0,0 +1,79 @@
+/*
+ This file is part of TALER
+ (C) 2014 Christian Grothoff (and other contributing authors)
+
+ 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 merchant/taler_merchant_dbinit.c
+ * @brief Program to initialise merchant database
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "merchant_db.h"
+
+
+/**
+ * Global execution result
+ */
+static int result;
+
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param config configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+ const struct GNUNET_CONFIGURATION_Handle *config)
+{
+ PGconn *conn;
+
+ conn = MERCHANT_DB_connect (config);
+ if (NULL == conn)
+ return;
+ if (GNUNET_OK == MERCHANT_DB_initialise (conn, GNUNET_NO))
+ result = GNUNET_OK;
+ MERCHANT_DB_disconnect (conn);
+}
+
+
+/**
+ * The main function
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc, char *const *argv)
+{
+ static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+ GNUNET_GETOPT_OPTION_END
+ };
+
+ result = GNUNET_SYSERR;
+ if (GNUNET_OK !=
+ GNUNET_PROGRAM_run (argc, argv, "taler-merchant-dbinit",
+ gettext_noop
+ ("Initialise Taler Merchant's database"),
+ options, &run, NULL))
+ return 3;
+ return (GNUNET_OK == result) ? 0 : 1;
+}
diff --git a/src/merchant/taler_merchant_serve.c b/src/merchant/taler_merchant_serve.c
new file mode 100644
index 00000000..67738886
--- /dev/null
+++ b/src/merchant/taler_merchant_serve.c
@@ -0,0 +1,1559 @@
+/*
+ This file is part of TALER
+ (C) 2014 Christian Grothoff (and other contributing authors)
+
+ 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 merchant/taler_merchant_serve.c
+ * @brief Reference implementation of the merchant's HTTP interface
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include <microhttpd.h>
+#include <taler/taler_util.h>
+#include "merchant.h"
+#include "merchant_db.h"
+#include <taler/taler_mint_service.h>
+#include <taler/taler_signatures.h>
+#include <taler/taler_json_lib.h>
+
+
+/**
+ * Shorthand for exit jumps.
+ */
+#define EXITIF(cond) \
+ do { \
+ if (cond) { GNUNET_break (0); goto EXITIF_exit; } \
+ } while (0)
+
+/**
+ * Shorthand for exit jumps due to protocol exceptions resulting from client's
+ * mistakes
+ */
+#define EXITIF_OP(cond) \
+ do { \
+ if (cond) { GNUNET_break_op (0); goto EXITIF_exit; } \
+ } while (0)
+
+/**
+ * Print JSON parsing related error information
+ */
+#define WARN_JSON(error) \
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING, \
+ "JSON parsing failed at %s:%u: %s (%s)", \
+ __FILE__, __LINE__, error.text, error.source)
+
+/**
+ * Macro to round microseconds to seconds in GNUNET_TIME_* structs.
+ */
+#define ROUND_TO_SECS(name,us_field) name.us_field -= name.us_field % (1000 * 1000)
+
+
+struct ContractData
+{
+ char *product;
+};
+
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+struct Contract
+{
+ /**
+ * The signature of the merchant for this contract
+ */
+ struct GNUNET_CRYPTO_EddsaSignature sig;
+
+ /**
+ * Purpose header for the signature over contract
+ */
+ struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
+
+ /**
+ * The transaction identifier
+ */
+ char m[13];
+
+ /**
+ * Expiry time
+ */
+ struct GNUNET_TIME_AbsoluteNBO t;
+
+ /**
+ * The invoice amount
+ */
+ struct TALER_AmountNBO amount;
+
+ /**
+ * The hash of the preferred wire format + nounce
+ */
+ struct GNUNET_HashCode h_wire;
+
+ /**
+ * The contract data
+ */
+ char a[];
+};
+
+GNUNET_NETWORK_STRUCT_END
+
+/**
+ * A download object
+ */
+struct Download {
+ struct Download *next;
+ struct Download *prev;
+ char *filename;
+ struct MHD_Response *resp;
+ unsigned int id;
+};
+
+/**
+ * DLL for downloadable objects
+ */
+struct Download *dwn_head;
+struct Download *dwn_tail;
+
+/**
+ * MHD response object for listing all products
+ */
+struct MHD_Response *list_products_resp;
+
+/**
+ * Number of files we make available for downloading
+ */
+static unsigned int ndownloads;
+
+
+/**
+ * Context information of the mints we trust
+ */
+struct Mint
+{
+ /**
+ * Public key of this mint
+ */
+ struct GNUNET_CRYPTO_EddsaPublicKey pubkey;
+
+ /**
+ * Connection handle to this mint
+ */
+ struct TALER_MINT_Handle *conn;
+};
+
+/**
+ * Hashmap to store the mint context information
+ */
+static struct GNUNET_CONTAINER_MultiPeerMap *mints_map;
+
+/**
+ * Our private key
+ */
+struct GNUNET_CRYPTO_EddsaPrivateKey *privkey;
+
+/**
+ * Connection handle to the our database
+ */
+PGconn *db_conn;
+
+/**
+ * The MHD Daemon
+ */
+static struct MHD_Daemon *mhd;
+
+/**
+ * Our wireformat
+ */
+static struct MERCHANT_WIREFORMAT_Sepa *wire;
+
+/**
+ * Hash of the wireformat
+ */
+static struct GNUNET_HashCode h_wire;
+
+/**
+ * Shutdown task identifier
+ */
+static struct GNUNET_SCHEDULER_Task *shutdown_task;
+
+/**
+ * Task for calling the select on MHD's sockets
+ */
+static struct GNUNET_SCHEDULER_Task *select_task;
+
+/**
+ * The port we are running on
+ */
+static long long unsigned port;
+
+/**
+ * Mint context
+ */
+static struct TALER_MINT_Context *mctx;
+
+/**
+ * Our hostname
+ */
+static char *hostname;
+
+/**
+ * Directory of data items to serve
+ */
+static char *data_dir;
+
+/**
+ * Should we do a dry run where temporary tables are used for storing the data.
+ */
+static int dry;
+
+/**
+ * Global return code
+ */
+static int result;
+
+
+
+/**
+ * Send JSON object as response. Decreases the reference count of the
+ * JSON object.
+ *
+ * @param connection the MHD connection
+ * @param json the json object
+ * @param status_code the http status code
+ * @return MHD result code
+ */
+static int
+send_response_json (struct MHD_Connection *connection,
+ json_t *json,
+ unsigned int status_code)
+{
+ struct MHD_Response *resp;
+ char *json_str;
+
+ json_str = json_dumps (json, JSON_INDENT(2));
+ json_decref (json);
+ resp = MHD_create_response_from_buffer (strlen (json_str), json_str,
+ MHD_RESPMEM_MUST_FREE);
+ if (NULL == resp)
+ return MHD_NO;
+ return MHD_queue_response (connection, status_code, resp);
+}
+
+
+/* ************ JSON post-processing logic; FIXME: why do we use JSON here!? ********** */
+
+
+/**
+ * Initial size for POST
+ * request buffer.
+ */
+#define REQUEST_BUFFER_INITIAL 1024
+
+/**
+ * Maximum POST request size
+ */
+#define REQUEST_BUFFER_MAX (1024*1024)
+
+
+/**
+ * Buffer for POST requests.
+ */
+struct Buffer
+{
+ /**
+ * Allocated memory
+ */
+ char *data;
+
+ /**
+ * Number of valid bytes in buffer.
+ */
+ size_t fill;
+
+ /**
+ * Number of allocated bytes in buffer.
+ */
+ size_t alloc;
+};
+
+
+/**
+ * Initialize a buffer.
+ *
+ * @param buf the buffer to initialize
+ * @param data the initial data
+ * @param data_size size of the initial data
+ * @param alloc_size size of the buffer
+ * @param max_size maximum size that the buffer can grow to
+ * @return a GNUnet result code
+ */
+static int
+buffer_init (struct Buffer *buf, const void *data, size_t data_size, size_t alloc_size, size_t max_size)
+{
+ if (data_size > max_size || alloc_size > max_size)
+ return GNUNET_SYSERR;
+ if (data_size > alloc_size)
+ alloc_size = data_size;
+ buf->data = GNUNET_malloc (alloc_size);
+ memcpy (buf->data, data, data_size);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Free the data in a buffer. Does *not* free
+ * the buffer object itself.
+ *
+ * @param buf buffer to de-initialize
+ */
+static void
+buffer_deinit (struct Buffer *buf)
+{
+ GNUNET_free (buf->data);
+ buf->data = NULL;
+}
+
+
+/**
+ * Append data to a buffer, growing the buffer if necessary.
+ *
+ * @param buf the buffer to append to
+ * @param data the data to append
+ * @param size the size of @a data
+ * @param max_size maximum size that the buffer can grow to
+ * @return GNUNET_OK on success,
+ * GNUNET_NO if the buffer can't accomodate for the new data
+ * GNUNET_SYSERR on fatal error (out of memory?)
+ */
+static int
+buffer_append (struct Buffer *buf, const void *data, size_t data_size, size_t max_size)
+{
+ if (buf->fill + data_size > max_size)
+ return GNUNET_NO;
+ if (data_size + buf->fill > buf->alloc)
+ {
+ char *new_buf;
+ size_t new_size = buf->alloc;
+ while (new_size < buf->fill + data_size)
+ new_size += 2;
+ if (new_size > max_size)
+ return GNUNET_NO;
+ new_buf = GNUNET_malloc (new_size);
+ memcpy (new_buf, buf->data, buf->fill);
+ buf->data = new_buf;
+ buf->alloc = new_size;
+ }
+ memcpy (buf->data + buf->fill, data, data_size);
+ buf->fill += data_size;
+ return GNUNET_OK;
+}
+
+
+
+/**
+ * Process a POST request containing a JSON object.
+ *
+ * @param connection the MHD connection
+ * @param con_cs the closure (contains a 'struct Buffer *')
+ * @param upload_data the POST data
+ * @param upload_data_size the POST data size
+ * @param json the JSON object for a completed request
+ *
+ * @returns
+ * GNUNET_YES if json object was parsed
+ * GNUNET_NO is request incomplete or invalid
+ * GNUNET_SYSERR on internal error
+ */
+static int
+process_post_json (struct MHD_Connection *connection,
+ void **con_cls,
+ const char *upload_data,
+ size_t *upload_data_size,
+ json_t **json)
+{
+ struct Buffer *r = *con_cls;
+
+ if (NULL == *con_cls)
+ {
+ /* We are seeing a fresh POST request. */
+
+ r = GNUNET_new (struct Buffer);
+ if (GNUNET_OK != buffer_init (r, upload_data, *upload_data_size,
+ REQUEST_BUFFER_INITIAL, REQUEST_BUFFER_MAX))
+ {
+ *con_cls = NULL;
+ buffer_deinit (r);
+ GNUNET_free (r);
+ return GNUNET_SYSERR;
+ }
+ *upload_data_size = 0;
+ *con_cls = r;
+ return GNUNET_NO;
+ }
+ if (0 != *upload_data_size)
+ {
+ /* We are seeing an old request with more data available. */
+
+ if (GNUNET_OK != buffer_append (r, upload_data, *upload_data_size,
+ REQUEST_BUFFER_MAX))
+ {
+ /* Request too long or we're out of memory. */
+
+ *con_cls = NULL;
+ buffer_deinit (r);
+ GNUNET_free (r);
+ return GNUNET_SYSERR;
+ }
+ *upload_data_size = 0;
+ return GNUNET_NO;
+ }
+
+ /* We have seen the whole request. */
+
+ *json = json_loadb (r->data, r->fill, 0, NULL);
+ buffer_deinit (r);
+ GNUNET_free (r);
+ if (NULL == *json)
+ {
+ struct MHD_Response *resp;
+ int ret;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Can't parse JSON request body\n");
+ resp = MHD_create_response_from_buffer (strlen ("parse error"),
+ "parse error",
+ MHD_RESPMEM_PERSISTENT);
+ ret = MHD_queue_response (connection,
+ MHD_HTTP_BAD_REQUEST,
+ resp);
+ MHD_destroy_response (resp);
+ return ret;
+ }
+ *con_cls = NULL;
+
+ return GNUNET_YES;
+}
+
+
+/* ************** END of JSON POST processing logic ************ */
+
+
+static struct GNUNET_HashCode
+hash_wireformat (uint64_t nounce)
+{
+ struct TALER_HashContext hc;
+ struct GNUNET_HashCode hash;
+
+ TALER_hash_context_start (&hc);
+ TALER_hash_context_read (&hc, wire->iban, strlen (wire->iban));
+ TALER_hash_context_read (&hc, wire->name, strlen (wire->name));
+ TALER_hash_context_read (&hc, wire->bic, strlen (wire->bic));
+ nounce = GNUNET_htonll (nounce);
+ TALER_hash_context_read (&hc, &nounce, sizeof (nounce));
+ TALER_hash_context_finish (&hc, &hash);
+ return hash;
+}
+
+
+static json_t *
+build_json_contract (struct Contract *contract)
+{
+ return json_pack ("{s:s, s:o, s:o, s:s, s:o, s:o}",
+ "transaction_id", contract->m,
+ "expiry", TALER_JSON_from_abs (GNUNET_TIME_absolute_ntoh (contract->t)),
+ "amount", TALER_JSON_from_amount (TALER_amount_ntoh (contract->amount)),
+ "description", contract->a,
+ "H_wire", TALER_JSON_from_data (&contract->h_wire, sizeof (struct GNUNET_HashCode)),
+ "msig", TALER_JSON_from_data (&contract->sig, sizeof (struct GNUNET_CRYPTO_EddsaSignature)));
+}
+
+/**
+ * Cleeanup entries in the peer map.
+ *
+ * @param cls closure
+ * @param key current public key
+ * @param value value in the hash map
+ * @return #GNUNET_YES if we should continue to
+ * iterate,
+ * #GNUNET_NO if not.
+ */
+static int
+mints_cleanup_iterator (void *cls,
+ const struct GNUNET_PeerIdentity *key,
+ void *value)
+{
+ struct Mint *mint = value;
+
+ if (NULL != mint->conn)
+ TALER_MINT_disconnect (mint->conn);
+ GNUNET_CONTAINER_multipeermap_remove (mints_map, key, mint);
+ GNUNET_free (mint);
+ return GNUNET_YES;
+}
+
+
+/**
+ * Shutdown task
+ *
+ * @param cls NULL
+ * @param tc scheduler task context
+ */
+static void
+do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Download *dwn;
+
+ shutdown_task = NULL;
+ if (NULL != select_task)
+ {
+ GNUNET_SCHEDULER_cancel (select_task);
+ select_task = NULL;
+ }
+ if (NULL != list_products_resp)
+ {
+ MHD_destroy_response (list_products_resp);
+ list_products_resp = NULL;
+ }
+ if (NULL != mhd)
+ {
+ MHD_stop_daemon (mhd);
+ mhd = NULL;
+ }
+ if (NULL != db_conn)
+ {
+ MERCHANT_DB_disconnect (db_conn);
+ db_conn = NULL;
+ }
+ if (NULL != mints_map)
+ {
+ GNUNET_CONTAINER_multipeermap_iterate (mints_map,
+ &mints_cleanup_iterator,
+ NULL);
+ GNUNET_CONTAINER_multipeermap_destroy (mints_map);
+ mints_map = NULL;
+ }
+ if (NULL != mctx)
+ {
+ TALER_MINT_cleanup (mctx);
+ mctx = NULL;
+ }
+ if (NULL != wire)
+ {
+ TALER_MERCHANT_destroy_wireformat_sepa (wire);
+ wire = NULL;
+ }
+ while (NULL != (dwn = dwn_head))
+ {
+ GNUNET_CONTAINER_DLL_remove (dwn_head, dwn_tail, dwn);
+ if (NULL != dwn->resp)
+ MHD_destroy_response (dwn->resp);
+ GNUNET_free (dwn->filename);
+ GNUNET_free (dwn);
+ }
+}
+
+
+/**
+ * Get the MHD's sockets which are to be called with select() and schedule the
+ * select task.
+ *
+ * @return GNUNET_YES upon success; GNUNET_NO upon error, in this case the
+ * select task will not be queued.
+ */
+static int
+poll_mhd ();
+
+
+/**
+ * One of the MHD's sockets are ready. Call MHD_run_from_select ().
+ *
+ * @param cls NULL
+ * @param tc scheduler task context
+ */
+static void
+run_mhd (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ fd_set fd_rs;
+ fd_set fd_ws;
+ select_task = NULL;
+ if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
+ return;
+ FD_ZERO (&fd_rs);
+ FD_ZERO (&fd_ws);
+ if (0 != (GNUNET_SCHEDULER_REASON_READ_READY & tc->reason))
+ fd_rs = tc->read_ready->sds;
+ if (0 != (GNUNET_SCHEDULER_REASON_WRITE_READY & tc->reason))
+ fd_ws = tc->write_ready->sds;
+ EXITIF (MHD_YES != MHD_run_from_select (mhd,
+ &fd_rs,
+ &fd_ws,
+ NULL));
+ EXITIF (GNUNET_NO == poll_mhd ());
+ return;
+
+ EXITIF_exit:
+ result = GNUNET_SYSERR;
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * Get the MHD's sockets which are to be called with select() and schedule the
+ * select task.
+ *
+ * @return GNUNET_YES upon success; GNUNET_NO upon error, in this case the
+ * select task will not be queued.
+ */
+static int
+poll_mhd ()
+{
+ struct GNUNET_NETWORK_FDSet rs;
+ struct GNUNET_NETWORK_FDSet ws;
+ fd_set fd_rs;
+ fd_set fd_ws;
+ fd_set fd_es;
+ struct GNUNET_TIME_Relative delay;
+ unsigned long long timeout;
+ int max_fd;
+
+ FD_ZERO (&fd_rs);
+ FD_ZERO (&fd_ws);
+ FD_ZERO (&fd_es);
+ max_fd = 0;
+ if (MHD_YES != MHD_get_fdset (mhd,
+ &fd_rs,
+ &fd_ws,
+ &fd_es,
+ &max_fd))
+ return GNUNET_SYSERR;
+ GNUNET_NETWORK_fdset_zero (&rs);
+ GNUNET_NETWORK_fdset_zero (&ws);
+ GNUNET_NETWORK_fdset_copy_native (&rs, &fd_rs, max_fd + 1);
+ GNUNET_NETWORK_fdset_copy_native (&ws, &fd_ws, max_fd + 1);
+ if (MHD_NO == MHD_get_timeout (mhd, &timeout))
+ timeout = 0;
+ if (0 == timeout)
+ delay = GNUNET_TIME_UNIT_FOREVER_REL;
+ else
+ delay = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
+ timeout);
+ if (NULL != select_task)
+ GNUNET_SCHEDULER_cancel (select_task);
+ select_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_KEEP,
+ delay,
+ &rs,
+ &ws,
+ &run_mhd,
+ NULL);
+ return GNUNET_OK;
+}
+
+static int
+failure_resp (struct MHD_Connection *connection, unsigned int status)
+{
+ static char page_404[]="\
+<!DOCTYPE html> \
+<html><title>Resource not found</title><body><center> \
+<h3>The resource you are looking for is not found.</h3> \
+</center></body></html>";
+ static char page_500[]="\
+<!DOCTYPE html> <html><title>Internal Server Error</title><body><center> \
+<h3>The server experienced an internal error and hence cannot serve your \
+request</h3></center></body></html>";
+ struct MHD_Response *resp;
+ char *page;
+ size_t size;
+#define PAGE(number) \
+ do {page=page_ ## number; size=sizeof(page_ ## number)-1;} while(0)
+
+ GNUNET_assert (400 <= status);
+ resp = NULL;
+ switch (status)
+ {
+ case 404:
+ PAGE(404);
+ break;
+ default:
+ status = 500;
+ case 500:
+ PAGE(500);
+ }
+#undef PAGE
+
+ EXITIF (NULL == (resp = MHD_create_response_from_buffer (size,
+ page,
+ MHD_RESPMEM_PERSISTENT)));
+ EXITIF (MHD_YES != MHD_queue_response (connection, status, resp));
+ MHD_destroy_response (resp);
+ return GNUNET_OK;
+
+ EXITIF_exit:
+ if (NULL != resp)
+ MHD_destroy_response (resp);
+ return GNUNET_SYSERR;
+}
+
+
+/**
+ * Iterator over key-value pairs. This iterator
+ * can be used to iterate over all of the cookies,
+ * headers, or POST-data fields of a request, and
+ * also to iterate over the headers that have been
+ * added to a response.
+ *
+ * @param cls closure
+ * @param kind kind of the header we are looking at
+ * @param key key for the value, can be an empty string
+ * @param value corresponding value, can be NULL
+ * @return #MHD_YES to continue iterating,
+ * #MHD_NO to abort the iteration
+ * @ingroup request
+ */
+static int
+get_contract_values_iter (void *cls,
+ enum MHD_ValueKind kind,
+ const char *key, const char *value)
+{
+ unsigned long long id;
+ uint64_t *product = cls;
+
+#define STR_PRODUCT "product"
+ if (0 == strncasecmp (key, STR_PRODUCT, sizeof (STR_PRODUCT) - 1))
+ {
+ if (1 > sscanf (value, "%llu", &id))
+ return GNUNET_NO;
+ *product = (uint64_t) id;
+ }
+ return GNUNET_YES;
+}
+
+#if 0
+static const char *
+uint64_to_enc (uint64_t i)
+{
+ static char buf[14];
+ i = GNUNET_htonll (i);
+ GNUNET_break (NULL !=
+ GNUNET_STRINGS_data_to_string (&i, sizeof (i), buf, sizeof (buf)));
+ buf[13] = '\0';
+ return buf;
+}
+
+static uint64_t
+enc_to_uint64 (const char *enc)
+{
+ uint64_t i;
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_STRINGS_string_to_data (enc, strlen(enc), &i, sizeof
+ (i)));
+ return GNUNET_ntohll (i);
+}
+#endif
+
+/**
+ * Prepare a contract, store it in database and send the corresponding JSON.
+ *
+ * @param connection MHD connection handle
+ * @param _resp pointer to hold the result response upon success
+ * @return the status code 200 when a contract is generated; 404 when the
+ * product is not found or upon other errors.
+ */
+static unsigned int
+handle_get_contract (struct MHD_Connection *connection,
+ struct MHD_Response **_resp)
+{
+ struct MHD_Response *resp;
+ struct Contract *contract;
+ struct GNUNET_TIME_Absolute expiry;
+ struct TALER_Amount amount;
+ char *template = "A contract from GNUnet e.V thanking you for a"
+ " donation of the aforementioned amount. As a token of gratitude, upon"
+ " successful payment, you may download your image at "
+ "`http://%s:%u/download?ref=[]'";
+ char *desc;
+ json_t *json;
+ char *json_str;
+ uint64_t nounce;
+ uint64_t product;
+ uint64_t contract_id_nbo;
+ long long contract_id;
+ unsigned int ret;
+
+ resp = NULL;
+ contract = NULL;
+ desc = NULL;
+ ret = 400;
+ product = UINT64_MAX;
+ MHD_get_connection_values (connection, MHD_GET_ARGUMENT_KIND,
+ &get_contract_values_iter, &product);
+ if (UINT64_MAX == product)
+ goto EXITIF_exit;
+
+ expiry = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
+ GNUNET_TIME_UNIT_DAYS);
+ ROUND_TO_SECS (expiry, abs_value_us);
+ amount.value = 1;
+ amount.fraction = 0;
+ strcpy (amount.currency, "EUR");
+ nounce = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_NONCE, UINT64_MAX);
+
+ /* Prepare contract */
+ GNUNET_asprintf (&desc, template, hostname, port);
+ contract_id = MERCHANT_DB_contract_create (db_conn,
+ expiry,
+ &amount,
+ desc,
+ nounce,
+ product);
+ EXITIF (-1 == contract_id);
+ contract_id_nbo = GNUNET_htonll ((uint64_t) contract_id);
+ contract = GNUNET_malloc (sizeof (struct Contract) + strlen (desc) + 1);
+ contract->purpose.purpose = htonl (TALER_SIGNATURE_MERCHANT_CONTRACT);
+ contract->purpose.size = htonl (sizeof (struct Contract)
+ - offsetof (struct Contract, purpose)
+ + strlen (desc) + 1);
+ GNUNET_STRINGS_data_to_string (&contract_id_nbo, sizeof (contract_id_nbo),
+ contract->m, sizeof (contract->m));
+ contract->t = GNUNET_TIME_absolute_hton (expiry);
+ (void) strcpy (contract->a, desc);
+ contract->h_wire = hash_wireformat (nounce);
+ contract->amount = TALER_amount_hton (amount);
+ GNUNET_CRYPTO_eddsa_sign (privkey, &contract->purpose, &contract->sig);
+ json = build_json_contract (contract);
+ json_str = json_dumps (json, JSON_INDENT(2));
+ json_decref (json);
+ resp = MHD_create_response_from_buffer (strlen (json_str), json_str,
+ MHD_RESPMEM_MUST_FREE);
+ ret = 200;
+
+ EXITIF_exit:
+ GNUNET_free_non_null (desc);
+ if (NULL != resp)
+ *_resp = resp;
+ if (NULL != contract)
+ {
+ GNUNET_free (contract);
+ }
+ return ret;
+}
+
+static struct Download *
+find_product (unsigned int id)
+{
+ struct Download *dwn;
+
+ for (dwn = dwn_head; NULL != dwn; dwn = dwn->next)
+ {
+ if (dwn->id == id)
+ return dwn;
+ }
+ return NULL;
+}
+
+
+static int
+get_download_ref (void *cls,
+ enum MHD_ValueKind kind,
+ const char *key, const char *value)
+{
+ char **coin_pub_enc = cls;
+
+ if (0 == strncasecmp (key, "ref", sizeof ("ref")))
+ {
+ *coin_pub_enc = GNUNET_strdup (value);
+ return MHD_NO;
+ }
+ return MHD_YES;
+}
+
+static unsigned int
+handle_download (struct MHD_Connection *conn,
+ struct MHD_Response **_resp)
+{
+ char *coin_pub_enc;
+ struct Download *item;
+ struct GNUNET_DISK_FileHandle *fh;
+ struct GNUNET_CRYPTO_EddsaPublicKey coin_pub;
+ long long product_id;
+ off_t size;
+ int ret;
+
+ coin_pub_enc = NULL;
+ ret = MHD_HTTP_NOT_FOUND;
+ MHD_get_connection_values (conn, MHD_GET_ARGUMENT_KIND,
+ &get_download_ref, &coin_pub_enc);
+ LOG_WARNING ("Trying to start downloading with coin: %s\n", coin_pub_enc);
+ EXITIF (NULL == coin_pub_enc);
+ EXITIF (GNUNET_SYSERR ==
+ GNUNET_CRYPTO_eddsa_public_key_from_string (coin_pub_enc,
+ strlen (coin_pub_enc),
+ &coin_pub));
+ product_id = MERCHANT_DB_get_checkout_product (db_conn,
+ &coin_pub);
+ EXITIF (-1 == product_id);
+ EXITIF (NULL == (item = find_product ((unsigned int) product_id)));
+ if (NULL != item->resp)
+ {
+ *_resp = item->resp;
+ ret = MHD_HTTP_OK;
+ goto EXITIF_exit;
+ }
+ fh = GNUNET_DISK_file_open (item->filename,
+ GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_USER_READ);
+ GNUNET_assert (NULL != fh);
+ GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_handle_size (fh,
+ &size));
+ item->resp = MHD_create_response_from_fd (size, fh->fd);
+ GNUNET_assert (MHD_NO != MHD_add_response_header (item->resp,
+ "Content-Type",
+ "image/jpeg"));
+ GNUNET_free (fh);
+
+ EXITIF_exit:
+ GNUNET_free_non_null (coin_pub_enc);
+ return ret;
+}
+
+struct CheckoutCtx
+{
+ /* FIXME: Hook into a DLL for cleaner shutdown */
+ struct MHD_Connection *conn;
+ struct TALER_MINT_DepositHandle *dh;
+ struct Download *product;
+ char *coin_pub_enc;
+ uint64_t transaction_id;
+ struct GNUNET_CRYPTO_EddsaPublicKey coin_pub;
+ struct GNUNET_CRYPTO_EddsaSignature coin_sig;
+ struct TALER_Amount amount;
+ struct GNUNET_SCHEDULER_Task *timeout_task;
+
+};
+
+
+/**
+ * Callbacks of this type are used to serve the result of submitting a deposit
+ * permission object to a mint
+ *
+ * @param cls closure
+ * @param status 1 for successful deposit, 2 for retry, 0 for failure
+ * @param obj the received JSON object; can be NULL if it cannot be constructed
+ * from the reply
+ * @param emsg in case of unsuccessful deposit, this contains a human readable
+ * explanation.
+ */
+static void
+checkout_status (void *cls, int status, json_t *obj, char *emsg)
+{
+ struct CheckoutCtx *ctx = cls;
+ const char *tmplt_download_page =
+ "<!DOCTYPE HTML><html>"
+ "<body>You are being redirected to the product download page<br>"
+ "If your browser is unable to redirect, you may click "
+ "<a href=\"%s\">here</a> to download.</body>"
+ "</html>";
+ char *download_page;
+ char *location;
+ struct MHD_Response *resp;
+ ssize_t size;
+
+ LOG_DEBUG ("Processing checkout request reply\n");
+ GNUNET_SCHEDULER_cancel (ctx->timeout_task);
+ ctx->timeout_task = NULL;
+ download_page = NULL;
+ location = NULL;
+ switch (status)
+ {
+ case 1:
+ {
+ struct GNUNET_CRYPTO_EddsaPublicKey coin_pub;
+
+ GNUNET_assert (GNUNET_SYSERR !=
+ GNUNET_CRYPTO_eddsa_public_key_from_string
+ (ctx->coin_pub_enc,
+ strlen (ctx->coin_pub_enc),
+ &coin_pub));
+ /* FIXME: Put the contract into the checkout DB. */
+ }
+ /* redirect with HTTP FOUND 302 to the product download page */
+ GNUNET_assert (NULL != obj);
+ GNUNET_assert (0 < (size = GNUNET_asprintf (&location,
+ "/download?ref=%s",
+ ctx->coin_pub_enc)));
+ GNUNET_assert (0 < (size = GNUNET_asprintf (&download_page,
+ tmplt_download_page,
+ location)));
+ resp = MHD_create_response_from_buffer (size,
+ download_page,
+ MHD_RESPMEM_MUST_FREE);
+ /* IMP: do not free `download_page' */
+ GNUNET_assert (NULL != resp);
+ GNUNET_assert (MHD_NO != MHD_add_response_header (resp,
+ "Location",
+ location));
+ GNUNET_assert (MHD_YES == MHD_queue_response (ctx->conn,
+ MHD_HTTP_FOUND,
+ resp));
+ MHD_destroy_response (resp);
+ GNUNET_free (location);
+ location = NULL;
+ resp = NULL;
+#if 0
+ struct Download *product;
+ struct GNUNET_DISK_FileHandle *fh;
+ GNUNET_assert (NULL != (product = ctx->product));
+ if (NULL != product->resp)
+ {
+ MHD_queue_response (ctx->conn, MHD_HTTP_OK, product->resp);
+ break;
+ }
+ fh = GNUNET_DISK_file_open (product->filename,
+ GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_USER_READ);
+ GNUNET_assert (NULL != fh);
+ GNUNET_assert (GNUNET_OK == GNUNET_DISK_file_handle_size (fh,
+ &size));
+ product->resp = MHD_create_response_from_fd (size, fh->fd);
+ GNUNET_assert (MHD_NO != MHD_add_response_header (product->resp,
+ "Content-Type",
+ "image/jpeg"));
+ GNUNET_free (fh);
+ MHD_queue_response (ctx->conn, MHD_HTTP_OK, product->resp);
+#endif
+
+ break;
+ case 2:
+ send_response_json (ctx->conn,
+ json_pack ("{s:s}", "status", "pending"),
+ 200); /* FIXME: Send Image data */
+ break;
+ case 0:
+ send_response_json (ctx->conn,
+ json_pack ("{s:s s:s}",
+ "status", "failed",
+ "error", (NULL != emsg) ? emsg : "unknown"),
+ 400); /* FIXME */
+ break;
+ default:
+ GNUNET_assert (0); /* should never reach */
+ }
+ GNUNET_free (ctx->coin_pub_enc);
+ GNUNET_free (ctx);
+ if (GNUNET_SYSERR == poll_mhd ())
+ {
+ GNUNET_break (0);
+ GNUNET_SCHEDULER_shutdown ();
+ }
+}
+
+static void
+checkout_status_timedout (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct CheckoutCtx *ctx = cls;
+
+ LOG_DEBUG ("Checkout request timed out\n");
+ ctx->timeout_task = NULL;
+ TALER_MINT_deposit_submit_cancel (ctx->dh);
+ ctx->dh = NULL;
+ send_response_json (ctx->conn,
+ json_pack ("{s:s}", "error", "timeout"),
+ 400); /* FIXME */
+ GNUNET_free (ctx->coin_pub_enc);
+ GNUNET_free (ctx);
+ EXITIF (GNUNET_SYSERR == poll_mhd ());
+ return;
+
+ EXITIF_exit:
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+static int
+handle_checkout (struct MHD_Connection *conn,
+ json_t *checkout_json)
+{
+ struct CheckoutCtx *ctx;
+ const char *pkey_enc;
+ const char *tid_enc;
+ const char *emsg;
+ const char *coin_pub_enc;
+ const char *coin_sig_enc;
+ struct Mint *mint;
+ struct Download *product;
+ struct GNUNET_CRYPTO_EddsaPublicKey pkey;
+ struct GNUNET_CRYPTO_EddsaPublicKey coin_pub;
+ struct GNUNET_CRYPTO_EddsaSignature coin_sig;
+ uint64_t tid;
+ uint64_t product_id;
+ json_error_t jerror;
+ unsigned int status;
+
+ coin_pub_enc = NULL;
+ emsg = "Public key of Mint is missing in the request";
+ status = MHD_HTTP_BAD_REQUEST;
+ if (-1 == json_unpack_ex (checkout_json,
+ &jerror,
+ 0,
+ "{s:s s:s s:s s:s}",
+ "mint_pub", &pkey_enc,
+ "transaction_id", &tid_enc,
+ "coin_pub", &coin_pub_enc,
+ "coin_sig", &coin_sig_enc))
+ {
+ WARN_JSON (jerror);
+ goto EXITIF_exit;
+ }
+
+ EXITIF (GNUNET_OK != GNUNET_STRINGS_string_to_data
+ (tid_enc, strlen (tid_enc), &tid, sizeof (tid)));
+ tid = GNUNET_ntohll (tid);
+
+ emsg = "Public key of the coin is missing/malformed in the request";
+ EXITIF (NULL == coin_pub_enc);
+ EXITIF (GNUNET_SYSERR ==
+ GNUNET_CRYPTO_eddsa_public_key_from_string (coin_pub_enc,
+ strlen (coin_pub_enc),
+ &coin_pub));
+
+ emsg = "Signature of the coin is missing/malformed in the request";
+ EXITIF (NULL == coin_sig_enc);
+ EXITIF (GNUNET_SYSERR ==
+ GNUNET_STRINGS_string_to_data (coin_sig_enc, strlen (coin_sig_enc),
+ &coin_sig, sizeof (coin_sig)));
+
+ emsg = "Contract not found";
+ status = MHD_HTTP_NOT_FOUND;
+ LOG_DEBUG ("Looking for product associated with transaction %u\n", tid);
+ EXITIF (-1 == (product_id = MERCHANT_DB_get_contract_product (db_conn, tid)));
+
+ emsg = "Could not find the downloadable product. Sorry :(";
+ EXITIF (NULL == (product = find_product (product_id)));
+
+ emsg = "Invalid public key given for a mint";
+ EXITIF (52 != strlen (pkey_enc));
+ EXITIF (GNUNET_SYSERR == GNUNET_STRINGS_string_to_data (pkey_enc, 52,
+ &pkey, sizeof (pkey)));
+
+ emsg = "The provided mint is not trusted by us";
+ status = MHD_HTTP_FORBIDDEN;
+ EXITIF (NULL == (mint =
+ GNUNET_CONTAINER_multipeermap_get (mints_map,
+ (const struct
+ GNUNET_PeerIdentity *)
+ &pkey)));
+
+ LOG_DEBUG ("Creating a new checkout request\n");
+ ctx = GNUNET_new (struct CheckoutCtx);
+ ctx->product = product;
+ ctx->conn = conn;
+ ctx->coin_pub_enc = GNUNET_strdup (coin_pub_enc);
+ ctx->transaction_id = tid;
+ ctx->coin_pub = coin_pub;
+ ctx->coin_sig = coin_sig;
+ /* FIXME: parse amount */
+ /* ctx->amount = ?? */
+ ctx->dh = TALER_MINT_deposit_submit_json (mint->conn,
+ checkout_status,
+ ctx,
+ checkout_json);
+ ctx->timeout_task = GNUNET_SCHEDULER_add_delayed
+ (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3),
+ &checkout_status_timedout, ctx);
+ return MHD_YES;
+
+ EXITIF_exit:
+ json_decref (checkout_json);
+ return send_response_json (conn,
+ json_pack ("{s:s s:s}",
+ "status", "failed",
+ "error", emsg),
+ status);
+}
+
+/**
+ * A client has requested the given url using the given method
+ * (#MHD_HTTP_METHOD_GET, #MHD_HTTP_METHOD_PUT,
+ * #MHD_HTTP_METHOD_DELETE, #MHD_HTTP_METHOD_POST, etc). The callback
+ * must call MHD callbacks to provide content to give back to the
+ * client and return an HTTP status code (i.e. #MHD_HTTP_OK,
+ * #MHD_HTTP_NOT_FOUND, etc.).
+ *
+ * @param cls argument given together with the function
+ * pointer when the handler was registered with MHD
+ * @param url the requested url
+ * @param method the HTTP method used (#MHD_HTTP_METHOD_GET,
+ * #MHD_HTTP_METHOD_PUT, etc.)
+ * @param version the HTTP version string (i.e.
+ * #MHD_HTTP_VERSION_1_1)
+ * @param upload_data the data being uploaded (excluding HEADERS,
+ * for a POST that fits into memory and that is encoded
+ * with a supported encoding, the POST data will NOT be
+ * given in upload_data and is instead available as
+ * part of #MHD_get_connection_values; very large POST
+ * data *will* be made available incrementally in
+ * @a upload_data)
+ * @param upload_data_size set initially to the size of the
+ * @a upload_data provided; the method must update this
+ * value to the number of bytes NOT processed;
+ * @param con_cls pointer that the callback can set to some
+ * address and that will be preserved by MHD for future
+ * calls for this request; since the access handler may
+ * be called many times (i.e., for a PUT/POST operation
+ * with plenty of upload data) this allows the application
+ * to easily associate some request-specific state.
+ * If necessary, this state can be cleaned up in the
+ * global #MHD_RequestCompletedCallback (which
+ * can be set with the #MHD_OPTION_NOTIFY_COMPLETED).
+ * Initially, `*con_cls` will be NULL.
+ * @return #MHD_YES if the connection was handled successfully,
+ * #MHD_NO if the socket must be closed due to a serios
+ * error while handling the request
+ */
+static int
+url_handler (void *cls,
+ struct MHD_Connection *connection,
+ const char *url,
+ const char *method,
+ const char *version,
+ const char *upload_data,
+ size_t *upload_data_size,
+ void **con_cls)
+{
+#define URL_PRODUCTS "/products"
+#define URL_CONTRACT "/contract"
+#define URL_CHECKOUT "/checkout"
+#define URL_HTTPTEST "/httptest"
+#define URL_DOWNLOAD "/download"
+#define STR_404_NOTFOUND "The requested resource is not found"
+ struct MHD_Response *resp;
+ int no_destroy;
+ unsigned int status;
+
+ resp = NULL;
+ status = 404;
+ no_destroy = 0;
+ LOG_DEBUG ("request for URL `%s'\n", url);
+
+ if (0 == strncasecmp (url, URL_PRODUCTS, sizeof (URL_PRODUCTS)))
+ {
+ /* parse for /contract */
+ if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
+ {
+ resp = list_products_resp;
+ no_destroy = 1;
+ status = 200;
+ }
+ else
+ GNUNET_break (0); /* FIXME: implement for post */
+ }
+
+ if (0 == strncasecmp (url, URL_CONTRACT, sizeof (URL_CONTRACT)))
+ {
+ /* parse for /contract */
+ if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
+ status = handle_get_contract (connection, &resp);
+ else
+ GNUNET_break (0); /* FIXME: implement for post */
+ }
+
+ if (0 == strncasecmp (url, URL_CHECKOUT, sizeof (URL_CHECKOUT)))
+ {
+ json_t *checkout_obj;
+ int ret;
+ /* parse for /checkout */
+ ret = process_post_json (connection,
+ con_cls,
+ upload_data,
+ upload_data_size,
+ &checkout_obj);
+ if (GNUNET_SYSERR == ret)
+ return MHD_NO;
+ if (GNUNET_NO == ret)
+ return MHD_YES;
+ /* Handle the response in the request handler */
+ ret = handle_checkout (connection, checkout_obj);
+ return ret;
+ }
+
+ if (0 == strncasecmp (url, URL_HTTPTEST, sizeof (URL_HTTPTEST)))
+ {
+ static char page[]="\
+<!DOCTYPE html> \
+<html><title>HTTP Test page</title><body><center><h3>HTTP Test page</h3> \
+</center></body></html>";
+ resp = MHD_create_response_from_buffer (sizeof (page) - 1,
+ page,
+ MHD_RESPMEM_PERSISTENT);
+ EXITIF (NULL == resp);
+ }
+
+ if ((0 == strncasecmp (url, URL_DOWNLOAD, sizeof (URL_DOWNLOAD)))
+ && (0 == strcmp (MHD_HTTP_METHOD_GET, method)))
+ {
+ status = handle_download (connection, &resp);
+ if (status != MHD_HTTP_OK)
+ no_destroy = 1;
+ }
+ if (NULL != resp)
+ {
+ EXITIF (MHD_YES != MHD_queue_response (connection, status, resp));
+ if (!no_destroy)
+ MHD_destroy_response (resp);
+ }
+ else
+ EXITIF (GNUNET_OK != failure_resp (connection, status));
+ return MHD_YES;
+
+ EXITIF_exit:
+ result = GNUNET_SYSERR;
+ GNUNET_SCHEDULER_shutdown ();
+ return MHD_NO;
+}
+
+
+/**
+ * Callback for catching serious error conditions from MHD.
+ *
+ * @param cls user specified value
+ * @param file where the error occured
+ * @param line where the error occured
+ * @param reason error detail, may be NULL
+ */
+static void
+mhd_panic_cb (void *cls,
+ const char *file,
+ unsigned int line,
+ const char *reason)
+{
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ "MHD panicked at %s:%u: %s",
+ file, line, reason);
+ result = GNUNET_SYSERR;
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+/**
+ * Function called with a filename.
+ *
+ * @param cls closure
+ * @param filename complete filename (absolute path)
+ * @return #GNUNET_OK to continue to iterate,
+ * #GNUNET_NO to stop iteration with no error,
+ * #GNUNET_SYSERR to abort iteration with error!
+ */
+static int
+add_download_file (void *cls, const char *filename)
+{
+ struct Download *dwn;
+
+ dwn = GNUNET_new (struct Download);
+ dwn->filename = GNUNET_strdup (filename);
+ dwn->id = ndownloads++;
+ GNUNET_CONTAINER_DLL_insert (dwn_head, dwn_tail, dwn);
+ return GNUNET_OK;
+}
+
+
+/**
+ * Function to build a MHD response object to list products
+ *
+ * @return GNUNET_OK upon success; GNUNET_SYSERR otherwise
+ */
+static int
+build_list_product_response ()
+{
+ const char *header = "\
+<!DOCTYPE html> \
+<html><title>Products List</title> \
+<body><center><ol>";
+ char **partials;
+ const char *footer = "</ol></center></body></html>";
+ char *page;
+ struct Download *dwn;
+ size_t size;
+ unsigned int cnt;
+ unsigned int psize;
+ unsigned int header_size;
+ unsigned int footer_size;
+ unsigned int *partial_sizes;
+ int ret;
+
+ ret = GNUNET_SYSERR;
+ GNUNET_assert (NULL == list_products_resp);
+ header_size = strlen (header);
+ footer_size = strlen (footer);
+ size = header_size;
+ size += footer_size;
+ partials = GNUNET_malloc (sizeof (char *) * ndownloads);
+ partial_sizes = GNUNET_malloc (sizeof (unsigned int) * ndownloads);
+ EXITIF (0 == ndownloads);
+ for (cnt = 0, dwn = dwn_head; cnt < ndownloads; cnt++, dwn=dwn->next)
+ {
+ EXITIF (NULL == dwn);
+ psize = GNUNET_asprintf (&partials[cnt],
+ "<li><a href=\"/contract?product=%u\">%s</a></li>",
+ cnt,
+ GNUNET_STRINGS_get_short_name (dwn->filename));
+ EXITIF (psize < 0);
+ size += psize;
+ partial_sizes [cnt] = psize;
+ }
+ page = GNUNET_malloc (size);
+ size = 0;
+ (void) memcpy (page, header, header_size);
+ size += header_size;
+ for (cnt = 0; cnt < ndownloads; cnt++)
+ {
+ (void) memcpy (page + size, partials[cnt], partial_sizes[cnt]);
+ size += partial_sizes[cnt];
+ }
+ (void) memcpy (page + size, footer, footer_size);
+ size += footer_size;
+ list_products_resp = MHD_create_response_from_buffer (size, page, MHD_RESPMEM_MUST_FREE);
+ ret = GNUNET_OK;
+
+ EXITIF_exit:
+ for (cnt = 0; cnt < ndownloads; cnt++)
+ GNUNET_free_non_null (partials[cnt]);
+ GNUNET_free_non_null (partials);
+ GNUNET_free_non_null (partial_sizes);
+ return ret;
+}
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param config configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+ const struct GNUNET_CONFIGURATION_Handle *config)
+{
+ char *keyfile;
+ struct MERCHANT_MintInfo *mint_infos;
+ unsigned int nmints;
+ unsigned int cnt;
+
+ result = GNUNET_SYSERR;
+ keyfile = NULL;
+ mint_infos = NULL;
+ shutdown_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
+ &do_shutdown, NULL);
+ if (NULL == data_dir)
+ {
+ LOG_ERROR ("Data directory for download files is missing. It can be given with the `-d' option\n");
+ goto EXITIF_exit;
+ }
+ EXITIF (GNUNET_SYSERR == (nmints = TALER_MERCHANT_parse_mints (config,
+ &mint_infos)));
+ EXITIF (NULL == (wire = TALER_MERCHANT_parse_wireformat_sepa (config)));
+ EXITIF (GNUNET_OK != GNUNET_CONFIGURATION_get_value_filename (config,
+ "merchant",
+ "KEYFILE",
+ &keyfile));
+ EXITIF (NULL == (privkey = GNUNET_CRYPTO_eddsa_key_create_from_file (keyfile)));
+ EXITIF (0 == GNUNET_DISK_directory_scan (data_dir,
+ &add_download_file,
+ NULL));
+ EXITIF (GNUNET_SYSERR == build_list_product_response ());
+ EXITIF (NULL == (db_conn = MERCHANT_DB_connect (config)));
+ EXITIF (GNUNET_OK != MERCHANT_DB_initialise (db_conn, dry));
+ EXITIF (GNUNET_SYSERR ==
+ GNUNET_CONFIGURATION_get_value_number (config,
+ "merchant",
+ "port",
+ &port));
+ EXITIF (GNUNET_SYSERR ==
+ GNUNET_CONFIGURATION_get_value_string (config,
+ "merchant",
+ "hostname",
+ &hostname));
+ EXITIF (NULL == (mctx = TALER_MINT_init ()));
+ EXITIF (NULL == (mints_map = GNUNET_CONTAINER_multipeermap_create (nmints, GNUNET_YES)));
+ for (cnt = 0; cnt < nmints; cnt++)
+ {
+ struct Mint *mint;
+
+ mint = GNUNET_new (struct Mint);
+ mint->pubkey = mint_infos[cnt].pubkey;
+ mint->conn = TALER_MINT_connect (mctx,
+ mint_infos[cnt].hostname,
+ mint_infos[cnt].port,
+ &mint->pubkey);
+ EXITIF (NULL == mint->conn);
+ EXITIF (GNUNET_SYSERR == GNUNET_CONTAINER_multipeermap_put
+ (mints_map,
+ (struct GNUNET_PeerIdentity *) &mint->pubkey,
+ mint,
+ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST));
+ }
+ MHD_set_panic_func (&mhd_panic_cb, NULL);
+ mhd = MHD_start_daemon (MHD_USE_DEBUG, //| MHD_USE_TCP_FASTOPEN,
+ (unsigned short) port,
+ NULL, NULL,
+ &url_handler, NULL,
+ //MHD_OPTION_TCP_FASTOPEN_QUEUE_SIZE,
+ //(unsigned int) 16,
+ MHD_OPTION_END);
+ EXITIF (NULL == mhd);
+ EXITIF (GNUNET_SYSERR == poll_mhd ());
+ GNUNET_CRYPTO_hash (wire, sizeof (*wire), &h_wire);
+ result = GNUNET_OK;
+
+ EXITIF_exit:
+ if (NULL != mint_infos)
+ {
+ for (cnt = 0; cnt < nmints; cnt++)
+ GNUNET_free (mint_infos[cnt].hostname);
+ GNUNET_free (mint_infos);
+ }
+ GNUNET_free_non_null (keyfile);
+ if (GNUNET_OK != result)
+ GNUNET_SCHEDULER_shutdown ();
+}
+
+
+/**
+ * The main function of the serve tool
+ *
+ * @param argc number of arguments from the command line
+ * @param argv command line arguments
+ * @return 0 ok, 1 on error
+ */
+int
+main (int argc, char *const *argv)
+{
+ static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+ {'t', "temp", NULL,
+ gettext_noop ("Use temporary database tables"), GNUNET_NO,
+ &GNUNET_GETOPT_set_one, &dry},
+ {'d', "dir", "DIRECTORY",
+ gettext_noop ("Directory of the data files to serve"), GNUNET_YES,
+ &GNUNET_GETOPT_set_string, &data_dir},
+ GNUNET_GETOPT_OPTION_END
+ };
+
+ if (GNUNET_OK !=
+ GNUNET_PROGRAM_run (argc, argv,
+ "taler-merchant-serve",
+ "Serve merchant's HTTP interface",
+ options, &run, NULL))
+ return 3;
+ return (GNUNET_OK == result) ? 0 : 1;
+}
diff --git a/src/merchant/test_merchant.c b/src/merchant/test_merchant.c
new file mode 100644
index 00000000..bcec09ae
--- /dev/null
+++ b/src/merchant/test_merchant.c
@@ -0,0 +1,96 @@
+/*
+ This file is part of TALER
+ (C) 2014 Christian Grothoff (and other contributing authors)
+
+ 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 merchant/test_merchant.c
+ * @brief File to test merchant-internal helper functions.
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "merchant.h"
+
+/**
+ * Array of parsed mints
+ */
+struct MERCHANT_MintInfo *mints;
+
+/**
+ * Number of mints in the above array
+ */
+int n_mints;
+
+/**
+ * Test result
+ */
+static int result;
+
+static void
+do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ unsigned int cnt;
+
+ for (cnt=0; cnt < n_mints; cnt++)
+ GNUNET_free (mints[cnt].hostname);
+ GNUNET_free_non_null (mints);
+ mints = 0;
+}
+
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param config configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+ const struct GNUNET_CONFIGURATION_Handle *config)
+{
+
+ mints = NULL;
+ n_mints = GNUNET_SYSERR;
+ n_mints = TALER_MERCHANT_parse_mints (config, &mints);
+ GNUNET_assert (GNUNET_SYSERR != n_mints);
+ GNUNET_assert (NULL != mints);
+ result = GNUNET_OK;
+ GNUNET_SCHEDULER_add_now (&do_shutdown, NULL);
+}
+
+int
+main (int argc, char *const argv[])
+{
+ char *argv2[] = {
+ "test-merchant",
+ "-c", "test_merchant.conf",
+ NULL
+ };
+ static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+ GNUNET_GETOPT_OPTION_END
+ };
+
+ result = GNUNET_SYSERR;
+ if (GNUNET_OK !=
+ GNUNET_PROGRAM_run ((sizeof (argv2) / sizeof (char *)) - 1,
+ argv2, "test-merchant",
+ "File to test merchant-internal helper functions.",
+ options, &run, NULL))
+ return 3;
+ return (GNUNET_OK == result) ? 0 : 1;
+}
diff --git a/src/merchant/test_merchant.conf b/src/merchant/test_merchant.conf
new file mode 100644
index 00000000..7d32769a
--- /dev/null
+++ b/src/merchant/test_merchant.conf
@@ -0,0 +1,36 @@
+# Sample configuration file test-merchant testcase
+[merchant]
+PORT = 4251
+HOSTNAME = localhost
+# List of mints the merchant trusts delimited by a single space
+TRUSTED_MINTS = nayapaisa
+
+#nayapaisa nyadirahim
+
+# Our secret key file
+KEYFILE = test_merchant.ecc
+
+[mint-taler]
+HOSTNAME = localhost
+PORT = 4241
+PUBKEY = 8MF3D4V40K4J7654Q7NT3YHZVJ22SJAMBG07GEQ0QSXHWF4M9X6G
+
+[mint-nayapaisa]
+HOSTNAME = localhost
+PORT = 4241
+# The public key of this mint
+PUBKEY = 6ZE0HEY2M0FWP61M0470HYBF4K6RRD5DP54372PD2TN9N9VX2VJG
+
+[mint-nyadirahim]
+HOSTNAME = nyadirahim.org
+PORT = 4241
+# The public key of this mint
+PUBKEY = 7995WKK71KPKTBBMA5BHNBSZFGNRZPYNXDJMQ8EK86V9598H03TG
+
+[merchant-db]
+CONFIG = postgres:///taler
+
+[wire-sepa]
+IBAN = DE67830654080004822650
+NAME = GNUNET E.V
+BIC = GENODEF1SRL
diff --git a/src/merchant/test_merchant.ecc b/src/merchant/test_merchant.ecc
new file mode 100644
index 00000000..ac8ee6e9
--- /dev/null
+++ b/src/merchant/test_merchant.ecc
@@ -0,0 +1,2 @@
+MY{.ӂce
+ف \ No newline at end of file
diff --git a/src/merchant/test_merchant_db.c b/src/merchant/test_merchant_db.c
new file mode 100644
index 00000000..d3eca890
--- /dev/null
+++ b/src/merchant/test_merchant_db.c
@@ -0,0 +1,147 @@
+/*
+ This file is part of TALER
+ (C) 2014 Christian Grothoff (and other contributing authors)
+
+ 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 merchant/test_merchant_db.c
+ * @brief File to test merchant database helper functions.
+ * @author Sree Harsha Totakura <sreeharsha@totakura.in>
+ */
+
+#include "platform.h"
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_util.h"
+#include "merchant_db.h"
+
+/**
+ * Shorthand for exit jumps.
+ */
+#define EXITIF(cond) \
+ do { \
+ if (cond) { GNUNET_break (0); goto EXITIF_exit; } \
+ } while (0)
+
+/**
+ * Macro to round microseconds to seconds in GNUNET_TIME_* structs.
+ */
+#define ROUND_TO_SECS(name,us_field) name.us_field -= name.us_field % (1000 * 1000);
+
+/**
+ * The database handle
+ */
+PGconn *conn;
+
+/**
+ * Test result
+ */
+static int result;
+
+static void
+do_shutdown (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ if (NULL != conn)
+ MERCHANT_DB_disconnect (conn);
+ conn = NULL;
+}
+
+
+/**
+ * Main function that will be run by the scheduler.
+ *
+ * @param cls closure
+ * @param args remaining command-line arguments
+ * @param cfgfile name of the configuration file used (for saving, can be NULL!)
+ * @param config configuration
+ */
+static void
+run (void *cls, char *const *args, const char *cfgfile,
+ const struct GNUNET_CONFIGURATION_Handle *config)
+{
+ struct GNUNET_TIME_Absolute expiry;
+ struct TALER_Amount amount;
+ char *desc = "A contract from GNUnet e.V to say a big Thank You for a donation of the aforementioned amount.";
+ uint64_t nounce;
+ uint64_t product;
+ long long transaction_id;
+
+ conn = MERCHANT_DB_connect (config);
+ EXITIF (NULL == conn);
+ GNUNET_SCHEDULER_add_now (&do_shutdown, NULL);
+ EXITIF (GNUNET_OK != MERCHANT_DB_initialise (conn, GNUNET_YES));
+ expiry = GNUNET_TIME_absolute_get ();
+ expiry = GNUNET_TIME_absolute_add (expiry, GNUNET_TIME_UNIT_DAYS);
+ ROUND_TO_SECS (expiry, abs_value_us);
+ amount.value = 1;
+ amount.fraction = 0;
+ nounce = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_NONCE, UINT64_MAX);
+ product = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_NONCE, UINT64_MAX);
+ product &= (UINT64_MAX >> 1);
+ EXITIF (-1 == (transaction_id = MERCHANT_DB_contract_create (conn,
+ expiry,
+ &amount,
+ desc,
+ nounce,
+ product)));
+ {
+ struct GNUNET_CRYPTO_EddsaPublicKey coin_pub;
+ struct GNUNET_CRYPTO_EddsaSignature coin_sig;
+ long long paid_product;
+
+ GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
+ &coin_pub, sizeof (coin_pub));
+ GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
+ &coin_sig, sizeof (coin_sig));
+ EXITIF (GNUNET_SYSERR == MERCHANT_DB_checkout_create (conn,
+ &coin_pub,
+ transaction_id,
+ &amount,
+ &coin_sig));
+ EXITIF (-1 == (paid_product = MERCHANT_DB_get_checkout_product (conn,
+ &coin_pub)));
+ EXITIF (paid_product < 0);
+ EXITIF (((uint64_t) paid_product) != product);
+ /* We should get -1 for product if a coin is not paid to us */
+ GNUNET_CRYPTO_random_block (GNUNET_CRYPTO_QUALITY_WEAK,
+ &coin_pub, sizeof (coin_pub));
+ EXITIF (-1 != (product = MERCHANT_DB_get_checkout_product (conn,
+ &coin_pub)));
+ }
+ result = GNUNET_OK;
+
+ EXITIF_exit:
+ return;
+}
+
+int
+main (int argc, char *const argv[])
+{
+ char *argv2[] = {
+ "test-merchant-db",
+ "-c", "test_merchant.conf",
+ NULL
+ };
+ static const struct GNUNET_GETOPT_CommandLineOption options[] = {
+ GNUNET_GETOPT_OPTION_END
+ };
+
+ result = GNUNET_SYSERR;
+ if (GNUNET_OK !=
+ GNUNET_PROGRAM_run ((sizeof (argv2) / sizeof (char *)) - 1,
+ argv2, "test-merchant-db",
+ "File to test merchant database helper functions.",
+ options, &run, NULL))
+ return 3;
+ return (GNUNET_OK == result) ? 0 : 1;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-18 07:59:24 +0000