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Diffstat (limited to 'src/backend/taler_mintdb_plugin.h')
| -rw-r--r-- | src/backend/taler_mintdb_plugin.h | 1218 |
1 files changed, 0 insertions, 1218 deletions
diff --git a/src/backend/taler_mintdb_plugin.h b/src/backend/taler_mintdb_plugin.h deleted file mode 100644 index 21d83d9d..00000000 --- a/src/backend/taler_mintdb_plugin.h +++ /dev/null @@ -1,1218 +0,0 @@ -/* - This file is part of TALER - Copyright (C) 2014, 2015 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 include/taler_mintdb_plugin.h - * @brief Low-level (statement-level) database access for the mint - * @author Florian Dold - * @author Christian Grothoff - */ -#ifndef TALER_MINTDB_PLUGIN_H -#define TALER_MINTDB_PLUGIN_H - -#include <gnunet/gnunet_util_lib.h> -#include "taler_mintdb_lib.h" - - -/** - * @brief Information we keep on bank transfer(s) that established a reserve. - */ -struct TALER_MINTDB_BankTransfer -{ - - /** - * Public key of the reserve that was filled. - */ - struct TALER_ReservePublicKeyP reserve_pub; - - /** - * Amount that was transferred to the mint. - */ - struct TALER_Amount amount; - - /** - * When did the mint receive the incoming transaction? - * (This is the execution date of the mint's database, - * the execution date of the bank should be in @e wire). - */ - struct GNUNET_TIME_Absolute execution_date; - - /** - * Detailed wire information about the transaction. - */ - json_t *wire; - -}; - - -/** - * @brief A summary of a Reserve - */ -struct TALER_MINTDB_Reserve -{ - /** - * The reserve's public key. This uniquely identifies the reserve - */ - struct TALER_ReservePublicKeyP pub; - - /** - * The balance amount existing in the reserve - */ - struct TALER_Amount balance; - - /** - * The expiration date of this reserve - */ - struct GNUNET_TIME_Absolute expiry; -}; - - -/** - * @brief Information we keep for a withdrawn coin to reproduce - * the /withdraw operation if needed, and to have proof - * that a reserve was drained by this amount. - */ -struct TALER_MINTDB_CollectableBlindcoin -{ - - /** - * Our signature over the (blinded) coin. - */ - struct TALER_DenominationSignature sig; - - /** - * Denomination key (which coin was generated). - */ - struct TALER_DenominationPublicKey denom_pub; - - /** - * Value of the coin being minted (matching the denomination key) - * plus the transaction fee. We include this in what is being - * signed so that we can verify a reserve's remaining total balance - * without needing to access the respective denomination key - * information each time. - */ - struct TALER_Amount amount_with_fee; - - /** - * Withdrawl fee charged by the mint. This must match the Mint's - * denomination key's withdrawl fee. If the client puts in an - * invalid withdrawl fee (too high or too low) that does not match - * the Mint's denomination key, the withdraw operation is invalid - * and will be rejected by the mint. The @e amount_with_fee minus - * the @e withdraw_fee is must match the value of the generated - * coin. We include this in what is being signed so that we can - * verify a mint's accounting without needing to access the - * respective denomination key information each time. - */ - struct TALER_Amount withdraw_fee; - - /** - * Public key of the reserve that was drained. - */ - struct TALER_ReservePublicKeyP reserve_pub; - - /** - * Hash over the blinded message, needed to verify - * the @e reserve_sig. - */ - struct GNUNET_HashCode h_coin_envelope; - - /** - * Signature confirming the withdrawl, matching @e reserve_pub, - * @e denom_pub and @e h_coin_envelope. - */ - struct TALER_ReserveSignatureP reserve_sig; -}; - - - -/** - * @brief Types of operations on a reserved. - */ -enum TALER_MINTDB_ReserveOperation -{ - /** - * Money was deposited into the reserve via a bank transfer. - */ - TALER_MINTDB_RO_BANK_TO_MINT = 0, - - /** - * A Coin was withdrawn from the reserve using /withdraw. - */ - TALER_MINTDB_RO_WITHDRAW_COIN = 1 -}; - - -/** - * @brief Reserve history as a linked list. Lists all of the transactions - * associated with this reserve (such as the bank transfers that - * established the reserve and all /withdraw operations we have done - * since). - */ -struct TALER_MINTDB_ReserveHistory -{ - - /** - * Next entry in the reserve history. - */ - struct TALER_MINTDB_ReserveHistory *next; - - /** - * Type of the event, determins @e details. - */ - enum TALER_MINTDB_ReserveOperation type; - - /** - * Details of the operation, depending on @e type. - */ - union - { - - /** - * Details about a bank transfer to the mint. - */ - struct TALER_MINTDB_BankTransfer *bank; - - /** - * Details about a /withdraw operation. - */ - struct TALER_MINTDB_CollectableBlindcoin *withdraw; - - } details; - -}; - - -/** - * @brief Specification for a /deposit operation. The combination of - * the coin's public key, the merchant's public key and the - * transaction ID must be unique. While a coin can (theoretically) be - * deposited at the same merchant twice (with partial spending), the - * merchant must either use a different public key or a different - * transaction ID for the two transactions. The same coin must not - * be used twice at the same merchant for the same transaction - * (as determined by transaction ID). (Note: we might want to - * fix #3819 and include at least h_contract as well.) - */ -struct TALER_MINTDB_Deposit -{ - /** - * Information about the coin that is being deposited. - */ - struct TALER_CoinPublicInfo coin; - - /** - * ECDSA signature affirming that the customer intends - * this coin to be deposited at the merchant identified - * by @e h_wire in relation to the contract identified - * by @e h_contract. - */ - struct TALER_CoinSpendSignatureP csig; - - /** - * Public key of the merchant. Enables later identification - * of the merchant in case of a need to rollback transactions. - */ - struct TALER_MerchantPublicKeyP merchant_pub; - - /** - * Hash over the contract between merchant and customer - * (remains unknown to the Mint). - */ - struct GNUNET_HashCode h_contract; - - /** - * Hash of the (canonical) representation of @e wire, used - * to check the signature on the request. Generated by - * the mint from the detailed wire data provided by the - * merchant. - */ - struct GNUNET_HashCode h_wire; - - /** - * Detailed wire information for executing the transaction. - */ - json_t *wire; - - /** - * Merchant-generated transaction ID to detect duplicate - * transactions. - */ - uint64_t transaction_id; - - /** - * Time when this request was generated. Used, for example, to - * assess when (roughly) the income was achieved for tax purposes. - * Note that the Mint will only check that the timestamp is not "too - * far" into the future (i.e. several days). The fact that the - * timestamp falls within the validity period of the coin's - * denomination key is irrelevant for the validity of the deposit - * request, as obviously the customer and merchant could conspire to - * set any timestamp. Also, the Mint must accept very old deposit - * requests, as the merchant might have been unable to transmit the - * deposit request in a timely fashion (so back-dating is not - * prevented). - */ - struct GNUNET_TIME_Absolute timestamp; - - /** - * How much time does the merchant have to issue a refund request? - * Zero if refunds are not allowed. After this time, the coin - * cannot be refunded. - */ - struct GNUNET_TIME_Absolute refund_deadline; - - /** - * Fraction of the coin's remaining value to be deposited, including - * depositing fee (if any). The coin is identified by @e coin_pub. - */ - struct TALER_Amount amount_with_fee; - - /** - * Depositing fee. - */ - struct TALER_Amount deposit_fee; - -}; - - -/** - * @brief Global information for a refreshing session. Includes - * dimensions of the operation, security parameters and - * client signatures from "/refresh/melt" and "/refresh/commit". - */ -struct TALER_MINTDB_RefreshSession -{ - - /** - * Number of coins we are melting. - */ - uint16_t num_oldcoins; - - /** - * Number of new coins we are creating. - */ - uint16_t num_newcoins; - - /** - * Index (smaller #TALER_CNC_KAPPA) which the mint has chosen to not - * have revealed during cut and choose. - */ - uint16_t noreveal_index; - -}; - - -/** - * @brief Specification for coin in a /refresh/melt operation. - */ -struct TALER_MINTDB_RefreshMelt -{ - /** - * Information about the coin that is being melted. - */ - struct TALER_CoinPublicInfo coin; - - /** - * Signature over the melting operation. - */ - struct TALER_CoinSpendSignatureP coin_sig; - - /** - * Hash of the refresh session this coin is melted into. - */ - struct GNUNET_HashCode session_hash; - - /** - * How much value is being melted? This amount includes the fees, - * so the final amount contributed to the melt is this value minus - * the fee for melting the coin. We include the fee in what is - * being signed so that we can verify a reserve's remaining total - * balance without needing to access the respective denomination key - * information each time. - */ - struct TALER_Amount amount_with_fee; - - /** - * Melting fee charged by the mint. This must match the Mint's - * denomination key's melting fee. If the client puts in an invalid - * melting fee (too high or too low) that does not match the Mint's - * denomination key, the melting operation is invalid and will be - * rejected by the mint. The @e amount_with_fee minus the @e - * melt_fee is the amount that will be credited to the melting - * session. - */ - struct TALER_Amount melt_fee; - -}; - - -/** - * @brief We have as many `struct TALER_MINTDB_RefreshCommitCoin` as there are new - * coins being created by the refresh (for each of the #TALER_CNC_KAPPA - * sets). These are the coins we ask the mint to sign if the - * respective set is selected. - */ -struct TALER_MINTDB_RefreshCommitCoin -{ - - /** - * Encrypted data allowing those able to decrypt it to derive - * the private keys of the new coins created by the refresh. - */ - struct TALER_RefreshLinkEncrypted *refresh_link; - - /** - * Blinded message to be signed (in envelope), with @e coin_env_size bytes. - */ - char *coin_ev; - - /** - * Number of bytes in @e coin_ev. - */ - size_t coin_ev_size; - -}; - - -GNUNET_NETWORK_STRUCT_BEGIN - -/** - * @brief For each (old) coin being melted, we have a `struct - * RefreshCommitLinkP` that allows the user to find the shared secret - * to decrypt the respective refresh links for the new coins in the - * `struct TALER_MINTDB_RefreshCommitCoin`. - */ -struct TALER_MINTDB_RefreshCommitLinkP -{ - /** - * Transfer public key, used to decrypt the @e shared_secret_enc - * in combintation with the corresponding private key of the - * coin. - */ - struct TALER_TransferPublicKeyP transfer_pub; - - /** - * Encrypted shared secret to decrypt the link. - */ - struct TALER_EncryptedLinkSecretP shared_secret_enc; -}; - -GNUNET_NETWORK_STRUCT_END - - - -/** - * @brief Linked list of refresh information linked to a coin. - */ -struct TALER_MINTDB_LinkDataList -{ - /** - * Information is stored in a NULL-terminated linked list. - */ - struct TALER_MINTDB_LinkDataList *next; - - /** - * Link data, used to recover the private key of the coin - * by the owner of the old coin. - */ - struct TALER_RefreshLinkEncrypted *link_data_enc; - - /** - * Denomination public key, determines the value of the coin. - */ - struct TALER_DenominationPublicKey denom_pub; - - /** - * Signature over the blinded envelope. - */ - struct TALER_DenominationSignature ev_sig; -}; - - -/** - * @brief Specification for a /lock operation. - */ -struct TALER_MINTDB_LockOperation -{ - /** - * Information about the coin that is being locked. - */ - struct TALER_CoinPublicInfo coin; - - /** - * Signature over the locking operation. - */ - struct TALER_CoinSpendSignatureP coin_sig; - - /** - * How much value is being locked? - */ - struct TALER_Amount amount; - - // FIXME: more needed... -}; - - -/** - * @brief Enumeration to classify the different types of transactions - * that can be done with a coin. - */ -enum TALER_MINTDB_TransactionType -{ - /** - * /deposit operation. - */ - TALER_MINTDB_TT_DEPOSIT = 0, - - /** - * /refresh/melt operation. - */ - TALER_MINTDB_TT_REFRESH_MELT = 1, - - /** - * /lock operation. - */ - TALER_MINTDB_TT_LOCK = 2 -}; - - -/** - * @brief List of transactions we performed for a particular coin. - */ -struct TALER_MINTDB_TransactionList -{ - - /** - * Next pointer in the NULL-terminated linked list. - */ - struct TALER_MINTDB_TransactionList *next; - - /** - * Type of the transaction, determines what is stored in @e details. - */ - enum TALER_MINTDB_TransactionType type; - - /** - * Details about the transaction, depending on @e type. - */ - union - { - - /** - * Details if transaction was a /deposit operation. - */ - struct TALER_MINTDB_Deposit *deposit; - - /** - * Details if transaction was a /refresh/melt operation. - */ - struct TALER_MINTDB_RefreshMelt *melt; - - /** - * Details if transaction was a /lock operation. - */ - struct TALER_MINTDB_LockOperation *lock; - - } details; - -}; - - -/** - * @brief All of the information from a /refresh/melt commitment. - */ -struct TALER_MINTDB_MeltCommitment -{ - - /** - * Number of coins we are melting. - */ - uint16_t num_oldcoins; - - /** - * Number of new coins we are creating. - */ - uint16_t num_newcoins; - - /** - * Array of @e num_oldcoins melt operation details. - */ - struct TALER_MINTDB_RefreshMelt *melts; - - /** - * Array of @e num_newcoins denomination keys - */ - struct TALER_DenominationPublicKey *denom_pubs; - - /** - * 2D-Array of #TALER_CNC_KAPPA and @e num_newcoins commitments. - */ - struct TALER_MINTDB_RefreshCommitCoin *commit_coins[TALER_CNC_KAPPA]; - - /** - * 2D-Array of #TALER_CNC_KAPPA and @e new_oldcoins links. - */ - struct TALER_MINTDB_RefreshCommitLinkP *commit_links[TALER_CNC_KAPPA]; -}; - - -/** - * @brief Handle for a database session (per-thread, for transactions). - */ -struct TALER_MINTDB_Session; - - -/** - * Function called with the session hashes and transfer secret - * information for a given coin. - * - * @param cls closure - * @param session_hash a session the coin was melted in - * @param transfer_pub public transfer key for the session - * @param shared_secret_enc set to shared secret for the session - */ -typedef void -(*TALER_MINTDB_TransferDataCallback)(void *cls, - const struct GNUNET_HashCode *session_hash, - const struct TALER_TransferPublicKeyP *transfer_pub, - const struct TALER_EncryptedLinkSecretP *shared_secret_enc); - - -/** - * @brief The plugin API, returned from the plugin's "init" function. - * The argument given to "init" is simply a configuration handle. - */ -struct TALER_MINTDB_Plugin -{ - - /** - * Closure for all callbacks. - */ - void *cls; - - /** - * Name of the library which generated this plugin. Set by the - * plugin loader. - */ - char *library_name; - - /** - * Get the thread-local database-handle. - * Connect to the db if the connection does not exist yet. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param temporary #GNUNET_YES to use a temporary schema; #GNUNET_NO to use the - * database default one - * @param the database connection, or NULL on error - */ - struct TALER_MINTDB_Session * - (*get_session) (void *cls, - int temporary); - - - /** - * Drop the temporary taler schema. This is only useful for testcases. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure - */ - int - (*drop_temporary) (void *cls, - struct TALER_MINTDB_Session *db); - - - /** - * Create the necessary tables if they are not present - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param temporary should we use a temporary schema - * @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure - */ - int - (*create_tables) (void *cls, - int temporary); - - - /** - * Start a transaction. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param session connection to use - * @return #GNUNET_OK on success - */ - int - (*start) (void *cls, - struct TALER_MINTDB_Session *session); - - - /** - * Commit a transaction. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion connection to use - * @return #GNUNET_OK on success - */ - int - (*commit) (void *cls, - struct TALER_MINTDB_Session *sesssion); - - - /** - * Abort/rollback a transaction. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion connection to use - */ - void - (*rollback) (void *cls, - struct TALER_MINTDB_Session *sesssion); - - - /** - * Insert information about a denomination key and in particular - * the properties (value, fees, expiration times) the coins signed - * with this key have. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion connection to use - * @param denom_pub the public key used for signing coins of this denomination - * @param issue issuing information with value, fees and other info about the coin - * @return #GNUNET_OK on success; #GNUNET_SYSERR on failure - */ - int - (*insert_denomination_info) (void *cls, - struct TALER_MINTDB_Session *session, - const struct TALER_DenominationPublicKey *denom_pub, - const struct TALER_MINTDB_DenominationKeyInformationP *issue); - - - /** - * Fetch information about a denomination key. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion connection to use - * @param denom_pub the public key used for signing coins of this denomination - * @param[out] issue set to issue information with value, fees and other info about the coin, can be NULL - * @return #GNUNET_OK on success; #GNUNET_NO if no record was found, #GNUNET_SYSERR on failure - */ - int - (*get_denomination_info) (void *cls, - struct TALER_MINTDB_Session *session, - const struct TALER_DenominationPublicKey *denom_pub, - struct TALER_MINTDB_DenominationKeyInformationP *issue); - - - /** - * Get the summary of a reserve. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param db the database connection handle - * @param[in,out] reserve the reserve data. The public key of the reserve should be set - * in this structure; it is used to query the database. The balance - * and expiration are then filled accordingly. - * @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure - */ - int - (*reserve_get) (void *cls, - struct TALER_MINTDB_Session *db, - struct TALER_MINTDB_Reserve *reserve); - - - /** - * Insert a incoming transaction into reserves. New reserves are - * also created through this function. Note that this API call - * starts (and stops) its own transaction scope (so the application - * must not do so). - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param db the database connection handle - * @param reserve_pub public key of the reserve - * @param balance the amount that has to be added to the reserve - * @param execution_time when was the amount added - * @param details bank transaction details justifying the increment, - * must be unique for each incoming transaction - * @return #GNUNET_OK upon success; #GNUNET_NO if the given - * @a details are already known for this @a reserve_pub, - * #GNUNET_SYSERR upon failures (DB error, incompatible currency) - */ - int - (*reserves_in_insert) (void *cls, - struct TALER_MINTDB_Session *db, - const struct TALER_ReservePublicKeyP *reserve_pub, - const struct TALER_Amount *balance, - struct GNUNET_TIME_Absolute execution_time, - const json_t *details); - - - /** - * Locate the response for a /withdraw request under the - * key of the hash of the blinded message. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection to use - * @param h_blind hash of the blinded coin to be signed (will match - * `h_coin_envelope` in the @a collectable to be returned) - * @param collectable corresponding collectable coin (blind signature) - * if a coin is found - * @return #GNUNET_SYSERR on internal error - * #GNUNET_NO if the collectable was not found - * #GNUNET_YES on success - */ - int - (*get_withdraw_info) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *h_blind, - struct TALER_MINTDB_CollectableBlindcoin *collectable); - - - /** - * Store collectable bit coin under the corresponding - * hash of the blinded message. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection to use - * @param collectable corresponding collectable coin (blind signature) - * if a coin is found - * @return #GNUNET_SYSERR on internal error - * #GNUNET_NO if the collectable was not found - * #GNUNET_YES on success - */ - int - (*insert_withdraw_info) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct TALER_MINTDB_CollectableBlindcoin *collectable); - - - /** - * Get all of the transaction history associated with the specified - * reserve. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion connection to use - * @param reserve_pub public key of the reserve - * @return known transaction history (NULL if reserve is unknown) - */ - struct TALER_MINTDB_ReserveHistory * - (*get_reserve_history) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct TALER_ReservePublicKeyP *reserve_pub); - - - /** - * Free memory associated with the given reserve history. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param rh history to free. - */ - void - (*free_reserve_history) (void *cls, - struct TALER_MINTDB_ReserveHistory *rh); - - - /** - * Check if we have the specified deposit already in the database. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param deposit deposit to search for - * @return #GNUNET_YES if we know this operation, - * #GNUNET_NO if this deposit is unknown to us, - * #GNUNET_SYSERR on DB error or if same coin(pub), merchant(pub) and - * transaction ID are already in DB, but for different - * other transaction details (contract, wiring details, - * amount, etc.) - */ - int - (*have_deposit) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct TALER_MINTDB_Deposit *deposit); - - - /** - * Insert information about deposited coin into the - * database. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion connection to the database - * @param deposit deposit information to store - * @return #GNUNET_OK on success, #GNUNET_SYSERR on error - */ - int - (*insert_deposit) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct TALER_MINTDB_Deposit *deposit); - - - /** - * Lookup refresh session data under the given @a session_hash. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database handle to use - * @param session_hash hash over the melt to use for the lookup - * @param[out] refresh_session where to store the result - * @return #GNUNET_YES on success, - * #GNUNET_NO if not found, - * #GNUNET_SYSERR on DB failure - */ - int - (*get_refresh_session) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - struct TALER_MINTDB_RefreshSession *refresh_session); - - - /** - * Store new refresh session data under the given @a session_hash. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database handle to use - * @param session_hash hash over the melt to use to locate the session - * @param refresh_session session data to store - * @return #GNUNET_YES on success, - * #GNUNET_SYSERR on DB failure - */ - int - (*create_refresh_session) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - const struct TALER_MINTDB_RefreshSession *refresh_session); - - - /** - * Store the given /refresh/melt request in the database. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param oldcoin_index index of the coin to store - * @param melt coin melt operation details to store; includes - * the session hash of the melt - * @return #GNUNET_OK on success - * #GNUNET_SYSERR on internal error - */ - int - (*insert_refresh_melt) (void *cls, - struct TALER_MINTDB_Session *sesssion, - uint16_t oldcoin_index, - const struct TALER_MINTDB_RefreshMelt *melt); - - - /** - * Get information about melted coin details from the database. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param session_hash hash to identify refresh session - * @param oldcoin_index index of the coin to retrieve - * @param melt melt data to fill in, can be NULL - * @return #GNUNET_OK on success - * #GNUNET_SYSERR on internal error - */ - int - (*get_refresh_melt) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - uint16_t oldcoin_index, - struct TALER_MINTDB_RefreshMelt *melt); - - - /** - * Store in the database which coin(s) we want to create - * in a given refresh operation. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param session_hash hash to identify refresh session - * @param num_newcoins number of coins to generate, size of the @a denom_pubs array - * @param denom_pubs array denominations of the coins to create - * @return #GNUNET_OK on success - * #GNUNET_SYSERR on internal error - */ - int - (*insert_refresh_order) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - uint16_t num_newcoins, - const struct TALER_DenominationPublicKey *denom_pubs); - - - /** - * Lookup in the database for the @a num_newcoins coins that we want to - * create in the given refresh operation. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param session_hash hash to identify refresh session - * @param num_newcoins size of the @a denom_pubs array - * @param[out] denom_pubs where to write @a num_newcoins denomination keys - * @return #GNUNET_OK on success - * #GNUNET_SYSERR on internal error - */ - int - (*get_refresh_order) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - uint16_t num_newcoins, - struct TALER_DenominationPublicKey *denom_pubs); - - - /** - * Store information about the commitments of the given index @a i - * for the given refresh session in the database. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection to use - * @param session_hash hash to identify refresh session - * @param cnc_index cut and choose index (1st dimension), relating to #TALER_CNC_KAPPA - * @param num_newcoins coin index size of the @a commit_coins array - * @param commit_coin array of coin commitments to store - * @return #GNUNET_OK on success - * #GNUNET_SYSERR on error - */ - int - (*insert_refresh_commit_coins) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - uint16_t cnc_index, - uint16_t num_newcoins, - const struct TALER_MINTDB_RefreshCommitCoin *commit_coins); - - - /** - * Obtain information about the commitment of the - * given coin of the given refresh session from the database. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection to use - * @param session_hash hash to identify refresh session - * @param cnc_index cut and choose set index (1st dimension) - * @param num_coins size of the @a commit_coins array - * @param[out] commit_coins array of coin commitments to return - * @return #GNUNET_OK on success - * #GNUNET_NO if not found - * #GNUNET_SYSERR on error - */ - int - (*get_refresh_commit_coins) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - uint16_t cnc_index, - uint16_t num_coins, - struct TALER_MINTDB_RefreshCommitCoin *commit_coins); - - - /** - * Store the commitment to the given (encrypted) refresh link data - * for the given refresh session. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection to use - * @param session_hash hash to identify refresh session - * @param cnc_index cut and choose index (1st dimension), relating to #TALER_CNC_KAPPA - * @param num_links size of the @a commit_link array - * @param commit_links array of link information to store - * @return #GNUNET_SYSERR on internal error, #GNUNET_OK on success - */ - int - (*insert_refresh_commit_links) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - uint16_t cnc_index, - uint16_t num_links, - const struct TALER_MINTDB_RefreshCommitLinkP *commit_links); - - /** - * Obtain the commited (encrypted) refresh link data - * for the given refresh session. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection to use - * @param session_hash hash to identify refresh session - * @param cnc_index cut and choose index (1st dimension) - * @param num_links size of the @a links array to return - * @param[out] links array link information to return - * @return #GNUNET_SYSERR on internal error, - * #GNUNET_NO if commitment was not found - * #GNUNET_OK on success - */ - int - (*get_refresh_commit_links) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - uint16_t cnc_index, - uint16_t num_links, - struct TALER_MINTDB_RefreshCommitLinkP *links); - - - /** - * Get all of the information from the given melt commit operation. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection to use - * @param session_hash hash to identify refresh session - * @return NULL if the @a session_hash does not correspond to any known melt - * operation - */ - struct TALER_MINTDB_MeltCommitment * - (*get_melt_commitment) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash); - - - /** - * Free information about a melt commitment. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param mc melt commitment data to free - */ - void - (*free_melt_commitment) (void *cls, - struct TALER_MINTDB_MeltCommitment *mc); - - - /** - * Insert signature of a new coin generated during refresh into - * the database indexed by the refresh session and the index - * of the coin. This data is later used should an old coin - * be used to try to obtain the private keys during "/refresh/link". - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param session_hash hash to identify refresh session - * @param newcoin_index coin index - * @param ev_sig coin signature - * @return #GNUNET_OK on success - */ - int - (*insert_refresh_out) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash, - uint16_t newcoin_index, - const struct TALER_DenominationSignature *ev_sig); - - - /** - * Obtain the link data of a coin, that is the encrypted link - * information, the denomination keys and the signatures. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param session_hash session to get linkage data for - * @return all known link data for the session - */ - struct TALER_MINTDB_LinkDataList * - (*get_link_data_list) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct GNUNET_HashCode *session_hash); - - - /** - * Free memory of the link data list. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param ldl link data list to release - */ - void - (*free_link_data_list) (void *cls, - struct TALER_MINTDB_LinkDataList *ldl); - - - /** - * Obtain shared secret and transfer public key from the public key of - * the coin. This information and the link information returned by - * @e get_link_data_list() enable the owner of an old coin to determine - * the private keys of the new coins after the melt. - * - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param coin_pub public key of the coin - * @param tdc function to call for each session the coin was melted into - * @param tdc_cls closure for @a tdc - * @return #GNUNET_OK on success, - * #GNUNET_NO on failure (not found) - * #GNUNET_SYSERR on internal failure (database issue) - */ - int - (*get_transfer) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct TALER_CoinSpendPublicKeyP *coin_pub, - TALER_MINTDB_TransferDataCallback tdc, - void *tdc_cls); - - - - /** - * Test if the given /lock request is known to us. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param lock lock operation - * @return #GNUNET_YES if known, - * #GNUNET_NO if not, - * #GNUNET_SYSERR on internal error - */ - int - (*have_lock) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct TALER_MINTDB_LockOperation *lock); - - - /** - * Store the given /lock request in the database. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param lock lock operation - * @return #GNUNET_OK on success - * #GNUNET_SYSERR on internal error - */ - int - (*insert_lock) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct TALER_MINTDB_LockOperation *lock); - - - /** - * Compile a list of all (historic) transactions performed - * with the given coin (/refresh/melt and /deposit operations). - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param sesssion database connection - * @param coin_pub coin to investigate - * @return list of transactions, NULL if coin is fresh - */ - struct TALER_MINTDB_TransactionList * - (*get_coin_transactions) (void *cls, - struct TALER_MINTDB_Session *sesssion, - const struct TALER_CoinSpendPublicKeyP *coin_pub); - - - /** - * Free linked list of transactions. - * - * @param cls the @e cls of this struct with the plugin-specific state - * @param list list to free - */ - void - (*free_coin_transaction_list) (void *cls, - struct TALER_MINTDB_TransactionList *list); - - -}; - - -#endif /* _NEURO_MINT_DB_H */ |