1 files changed, 344 insertions, 0 deletions

diff --git a/src/mint/mint_db.h b/src/mint/mint_db.h
new file mode 100644
index 000000000..4f47aac1c
--- /dev/null
+++ b/src/mint/mint_db.h
@@ -0,0 +1,344 @@
+/*
+  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 mint/mint_db.h
+ * @brief Mint-specific database access
+ * @author Florian Dold
+ */
+
+#ifndef _NEURO_MINT_DB_H
+#define _NEURO_MINT_DB_H
+
+#include <libpq-fe.h>
+#include <gnunet/gnunet_util_lib.h>
+#include "taler_util.h"
+#include "taler_types.h"
+#include "taler_rsa.h"
+
+
+/**
+ * Reserve row.  Corresponds to table 'reserves' in
+ * the mint's database.
+ */
+struct Reserve
+{
+  /**
+   * Signature over the purse.
+   * Only valid if (blind_session_missing==GNUNET_YES).
+   */
+  struct GNUNET_CRYPTO_EddsaSignature status_sig;
+  /**
+   * Signature with purpose TALER_SIGNATURE_PURSE.
+   * Only valid if (blind_session_missing==GNUNET_YES).
+   */
+  struct GNUNET_CRYPTO_EccSignaturePurpose status_sig_purpose;
+  /**
+   * Signing key used to sign the purse.
+   * Only valid if (blind_session_missing==GNUNET_YES).
+   */
+  struct GNUNET_CRYPTO_EddsaPublicKey status_sign_pub;
+  /**
+   * Withdraw public key, identifies the purse.
+   * Only the customer knows the corresponding private key.
+   */
+  struct GNUNET_CRYPTO_EddsaPublicKey reserve_pub;
+  /**
+   * Remaining balance in the purse.
+   */
+  struct TALER_AmountNBO balance;
+
+  /**
+   * Expiration date for the purse.
+   */
+  struct GNUNET_TIME_AbsoluteNBO expiration;
+};
+
+
+struct CollectableBlindcoin
+{
+  struct TALER_RSA_BlindedSignaturePurpose ev;
+  struct TALER_RSA_Signature ev_sig;
+  struct TALER_RSA_PublicKeyBinaryEncoded denom_pub;
+  struct GNUNET_CRYPTO_EddsaPublicKey reserve_pub;
+  struct GNUNET_CRYPTO_EddsaSignature reserve_sig;
+};
+
+
+struct RefreshSession
+{
+  int has_commit_sig;
+  struct GNUNET_CRYPTO_EddsaSignature commit_sig;
+  struct GNUNET_CRYPTO_EddsaPublicKey session_pub;
+  uint16_t num_oldcoins;
+  uint16_t num_newcoins;
+  uint16_t kappa;
+  uint16_t noreveal_index;
+  uint8_t reveal_ok;
+};
+
+
+#define TALER_REFRESH_SHARED_SECRET_LENGTH (sizeof (struct GNUNET_HashCode))
+#define TALER_REFRESH_LINK_LENGTH (sizeof (struct LinkData))
+
+struct RefreshCommitLink
+{
+  struct GNUNET_CRYPTO_EddsaPublicKey session_pub;
+  struct GNUNET_CRYPTO_EcdsaPublicKey transfer_pub;
+  uint16_t cnc_index;
+  uint16_t oldcoin_index;
+  char shared_secret_enc[sizeof (struct GNUNET_HashCode)];
+};
+
+struct LinkData
+{
+  struct GNUNET_CRYPTO_EcdsaPrivateKey coin_priv;
+  struct TALER_RSA_BlindingKeyBinaryEncoded bkey_enc;
+};
+
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+struct SharedSecretEnc
+{
+  char data[TALER_REFRESH_SHARED_SECRET_LENGTH];
+};
+
+
+struct LinkDataEnc
+{
+  char data[sizeof (struct LinkData)];
+};
+
+GNUNET_NETWORK_STRUCT_END
+
+struct RefreshCommitCoin
+{
+  struct GNUNET_CRYPTO_EddsaPublicKey session_pub;
+  struct TALER_RSA_BlindedSignaturePurpose coin_ev;
+  uint16_t cnc_index;
+  uint16_t newcoin_index;
+  char link_enc[sizeof (struct LinkData)];
+};
+
+
+struct KnownCoin
+{
+  struct TALER_CoinPublicInfo public_info;
+  struct TALER_Amount expended_balance;
+  int is_refreshed;
+  /**
+   * Refreshing session, only valid if
+   * is_refreshed==1.
+   */
+  struct GNUNET_CRYPTO_EddsaPublicKey refresh_session_pub;
+};
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+struct Deposit
+{
+  /* FIXME: should be TALER_CoinPublicInfo */
+  struct GNUNET_CRYPTO_EddsaPublicKey coin_pub;
+  struct TALER_RSA_PublicKeyBinaryEncoded denom_pub;
+  struct TALER_RSA_Signature coin_sig;
+  struct TALER_RSA_SignaturePurpose purpose;
+  uint64_t transaction_id;
+  struct TALER_AmountNBO amount;
+  struct GNUNET_CRYPTO_EddsaPublicKey merchant_pub;
+  struct GNUNET_HashCode h_contract;
+  struct GNUNET_HashCode h_wire;
+  /* TODO: uint16_t wire_size */
+  char wire[];                  /* string encoded wire JSON object */
+};
+
+GNUNET_NETWORK_STRUCT_END
+
+int
+TALER_MINT_DB_prepare (PGconn *db_conn);
+
+int
+TALER_MINT_DB_get_collectable_blindcoin (PGconn *db_conn,
+                                         struct TALER_RSA_BlindedSignaturePurpose *blind_ev,
+                                         struct CollectableBlindcoin *collectable);
+
+int
+TALER_MINT_DB_insert_collectable_blindcoin (PGconn *db_conn,
+                                            const struct CollectableBlindcoin *collectable);
+
+
+int
+TALER_MINT_DB_rollback (PGconn *db_conn);
+
+
+int
+TALER_MINT_DB_transaction (PGconn *db_conn);
+
+
+int
+TALER_MINT_DB_commit (PGconn *db_conn);
+
+
+int
+TALER_MINT_DB_get_reserve (PGconn *db_conn,
+                           const struct GNUNET_CRYPTO_EddsaPublicKey *reserve_pub,
+                           struct Reserve *reserve_res);
+
+int
+TALER_MINT_DB_update_reserve (PGconn *db_conn,
+                              const struct Reserve *reserve,
+                              int fresh);
+
+
+int
+TALER_MINT_DB_insert_refresh_order (PGconn *db_conn,
+                                    uint16_t newcoin_index,
+                                    const struct GNUNET_CRYPTO_EddsaPublicKey *session_pub,
+                                    const struct TALER_RSA_PublicKeyBinaryEncoded *denom_pub);
+
+int
+TALER_MINT_DB_get_refresh_session (PGconn *db_conn,
+                                   const struct GNUNET_CRYPTO_EddsaPublicKey *refresh_session_pub,
+                                   struct RefreshSession *r_session);
+
+
+int
+TALER_MINT_DB_get_known_coin (PGconn *db_conn, struct GNUNET_CRYPTO_EcdsaPublicKey *coin_pub,
+                              struct KnownCoin *known_coin);
+
+
+int
+TALER_MINT_DB_upsert_known_coin (PGconn *db_conn, struct KnownCoin *known_coin);
+
+
+int
+TALER_MINT_DB_insert_refresh_commit_link (PGconn *db_conn, struct RefreshCommitLink *commit_link);
+
+int
+TALER_MINT_DB_insert_refresh_commit_coin (PGconn *db_conn, struct RefreshCommitCoin *commit_coin);
+
+
+int
+TALER_MINT_DB_get_refresh_commit_link (PGconn *db_conn,
+                                       const struct GNUNET_CRYPTO_EddsaPublicKey *refresh_session_pub,
+                                       int i, int j,
+                                       struct RefreshCommitLink *commit_link);
+
+
+int
+TALER_MINT_DB_get_refresh_commit_coin (PGconn *db_conn,
+                                       const struct GNUNET_CRYPTO_EddsaPublicKey *refresh_session_pub,
+                                       int i, int j,
+                                       struct RefreshCommitCoin *commit_coin);
+
+
+int
+TALER_MINT_DB_create_refresh_session (PGconn *db_conn,
+                                      const struct GNUNET_CRYPTO_EddsaPublicKey
+                                      *session_pub);
+
+
+int
+TALER_MINT_DB_get_refresh_order (PGconn *db_conn,
+                                 uint16_t newcoin_index,
+                                 const struct GNUNET_CRYPTO_EddsaPublicKey *session_pub,
+                                 struct TALER_RSA_PublicKeyBinaryEncoded *denom_pub);
+
+
+int
+TALER_MINT_DB_insert_refresh_collectable (PGconn *db_conn,
+                                          uint16_t newcoin_index,
+                                          const struct GNUNET_CRYPTO_EddsaPublicKey *session_pub,
+                                          const struct TALER_RSA_Signature *ev_sig);
+int
+TALER_MINT_DB_get_refresh_collectable (PGconn *db_conn,
+                                       uint16_t newcoin_index,
+                                       const struct GNUNET_CRYPTO_EddsaPublicKey *session_pub,
+                                       struct TALER_RSA_Signature *ev_sig);
+int
+TALER_MINT_DB_set_reveal_ok (PGconn *db_conn,
+                             const struct GNUNET_CRYPTO_EddsaPublicKey *session_pub);
+
+int
+TALER_MINT_DB_insert_refresh_melt (PGconn *db_conn,
+                                    const struct GNUNET_CRYPTO_EddsaPublicKey *session_pub,
+                                    uint16_t oldcoin_index,
+                                    const struct GNUNET_CRYPTO_EcdsaPublicKey *coin_pub,
+                                    const struct TALER_RSA_PublicKeyBinaryEncoded *denom_pub);
+
+
+int
+TALER_MINT_DB_get_refresh_melt (PGconn *db_conn,
+                                const struct GNUNET_CRYPTO_EddsaPublicKey *session_pub,
+                                uint16_t oldcoin_index,
+                                struct GNUNET_CRYPTO_EcdsaPublicKey *coin_pub);
+
+
+typedef
+int (*LinkIterator) (void *cls,
+                     const struct LinkDataEnc *link_data_enc,
+                     const struct TALER_RSA_PublicKeyBinaryEncoded *denom_pub,
+                     const struct TALER_RSA_Signature *ev_sig);
+
+int
+TALER_db_get_link (PGconn *db_conn,
+                   const struct GNUNET_CRYPTO_EcdsaPublicKey *coin_pub,
+                   LinkIterator link_iter,
+                   void *cls);
+
+
+int
+TALER_db_get_transfer (PGconn *db_conn,
+                       const struct GNUNET_CRYPTO_EcdsaPublicKey *coin_pub,
+                       struct GNUNET_CRYPTO_EcdsaPublicKey *transfer_pub,
+                       struct SharedSecretEnc *shared_secret_enc);
+
+int
+TALER_MINT_DB_init_deposits (PGconn *db_conn, int temporary);
+
+int
+TALER_MINT_DB_prepare_deposits (PGconn *db_conn);
+
+int
+TALER_MINT_DB_insert_deposit (PGconn *db_conn,
+                              const struct Deposit *deposit);
+
+int
+TALER_MINT_DB_get_deposit (PGconn *db_conn,
+                           const struct GNUNET_CRYPTO_EddsaPublicKey *coin_pub,
+                           struct Deposit **r_deposit);
+int
+TALER_MINT_DB_insert_known_coin (PGconn *db_conn,
+                                 const struct KnownCoin *known_coin);
+
+
+
+/**
+ * Get the thread-local database-handle.
+ * Connect to the db if the connection does not exist yet.
+ *
+ * @param the database connection, or NULL on error
+ */
+PGconn *
+TALER_MINT_DB_get_connection (void);
+
+
+int
+TALER_MINT_DB_init (const char *connection_cfg);
+
+
+
+#endif /* _NEURO_MINT_DB_H */