1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
/*
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 mint/taler-mint-httpd_db.h
* @brief High-level (transactional-layer) database operations for the mint
* @author Chrisitan Grothoff
*/
#ifndef TALER_MINT_HTTPD_DB_H
#define TALER_MINT_HTTPD_DB_H
#include <microhttpd.h>
#include "taler_mintdb_plugin.h"
/**
* Execute a "/deposit". The validity of the coin and signature
* have already been checked. The database must now check that
* the coin is not (double or over) spent, and execute the
* transaction (record details, generate success or failure response).
*
* @param connection the MHD connection to handle
* @param deposit information about the deposit
* @return MHD result code
*/
int
TMH_DB_execute_deposit (struct MHD_Connection *connection,
const struct TALER_MINTDB_Deposit *deposit);
/**
* Execute a "/withdraw/status". Given the public key of a reserve,
* return the associated transaction history.
*
* @param connection the MHD connection to handle
* @param reserve_pub public key of the reserve to check
* @return MHD result code
*/
int
TMH_DB_execute_withdraw_status (struct MHD_Connection *connection,
const struct TALER_ReservePublicKeyP *reserve_pub);
/**
* Execute a "/withdraw/sign". Given a reserve and a properly signed
* request to withdraw a coin, check the balance of the reserve and
* if it is sufficient, store the request and return the signed
* blinded envelope.
*
* @param connection the MHD connection to handle
* @param reserve public key of the reserve
* @param denomination_pub public key of the denomination requested
* @param blinded_msg blinded message to be signed
* @param blinded_msg_len number of bytes in @a blinded_msg
* @param signature signature over the withdraw request, to be stored in DB
* @return MHD result code
*/
int
TMH_DB_execute_withdraw_sign (struct MHD_Connection *connection,
const struct TALER_ReservePublicKeyP *reserve,
const struct TALER_DenominationPublicKey *denomination_pub,
const char *blinded_msg,
size_t blinded_msg_len,
const struct TALER_ReserveSignatureP *signature);
/**
* @brief Details about a melt operation of an individual coin.
*/
struct TMH_DB_MeltDetails
{
/**
* Information about the coin being melted.
*/
struct TALER_CoinPublicInfo coin_info;
/**
* Signature allowing the melt (using
* a `struct TALER_MINTDB_RefreshMeltConfirmSignRequestBody`) to sign over.
*/
struct TALER_CoinSpendSignatureP melt_sig;
/**
* How much of the coin's value did the client allow to be melted?
* This amount includes the fees, so the final amount contributed
* to the melt is this value minus the fee for melting the coin.
*/
struct TALER_Amount melt_amount_with_fee;
};
/**
* Execute a "/refresh/melt". We have been given a list of valid
* coins and a request to melt them into the given
* @a refresh_session_pub. Check that the coins all have the
* required value left and if so, store that they have been
* melted and confirm the melting operation to the client.
*
* @param connection the MHD connection to handle
* @param session_hash hash code of the session the coins are melted into
* @param num_new_denoms number of entries in @a denom_pubs, size of y-dimension of @a commit_coin array
* @param denom_pubs array of public denomination keys for the refresh (?)
* @param coin_count number of entries in @ a coin_melt_details, size of y-dimension of @a commit_link array
* @param coin_melt_details signatures and (residual) value of and information about the respective coin to be melted
* @param commit_coin 2d array of coin commitments (what the mint is to sign
* once the "/refres/reveal" of cut and choose is done)
* @param commit_link 2d array of coin link commitments (what the mint is
* to return via "/refresh/link" to enable linkage in the
* future)
* @return MHD result code
*/
int
TMH_DB_execute_refresh_melt (struct MHD_Connection *connection,
const struct GNUNET_HashCode *session_hash,
unsigned int num_new_denoms,
const struct TALER_DenominationPublicKey *denom_pubs,
unsigned int coin_count,
const struct TMH_DB_MeltDetails *coin_melt_details,
struct TALER_MINTDB_RefreshCommitCoin *const* commit_coin,
struct TALER_RefreshCommitLinkP *const* commit_link);
/**
* Execute a "/refresh/reveal". The client is revealing to us the
* transfer keys for #TALER_CNC_KAPPA-1 sets of coins. Verify that the
* revealed transfer keys would allow linkage to the blinded coins,
* and if so, return the signed coins for corresponding to the set of
* coins that was not chosen.
*
* @param connection the MHD connection to handle
* @param session_hash hash over the refresh session
* @param num_oldcoins size of y-dimension of @a transfer_privs array
* @param transfer_privs array with the revealed transfer keys, #TALER_CNC_KAPPA is 1st-dimension
* @return MHD result code
*/
int
TMH_DB_execute_refresh_reveal (struct MHD_Connection *connection,
const struct GNUNET_HashCode *session_hash,
unsigned int num_oldcoins,
struct TALER_TransferPrivateKeyP **transfer_privs);
/**
* Execute a "/refresh/link". Returns the linkage information that
* will allow the owner of a coin to follow the refresh trail to the
* refreshed coin.
*
* @param connection the MHD connection to handle
* @param coin_pub public key of the coin to link
* @return MHD result code
*/
int
TMH_DB_execute_refresh_link (struct MHD_Connection *connection,
const struct TALER_CoinSpendPublicKeyP *coin_pub);
/**
* Add an incoming transaction to the database.
*
* @param connection the MHD connection to handle
* @param reserve_pub public key of the reserve
* @param amount amount to add to the reserve
* @param execution_time when did we receive the wire transfer
* @param wire details about the wire transfer
* @return MHD result code
*/
int
TMH_DB_execute_admin_add_incoming (struct MHD_Connection *connection,
const struct TALER_ReservePublicKeyP *reserve_pub,
const struct TALER_Amount *amount,
struct GNUNET_TIME_Absolute execution_time,
json_t *wire);
#endif
/* TALER_MINT_HTTPD_DB_H */
|
