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
|
/*
This file is part of TALER
Copyright (C) 2014-2018 Inria and GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU Affero 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file taler-auditor-httpd_exchanges.c
* @brief Handle /exchanges requests; returns list of exchanges we audit
* @author Christian Grothoff
*/
#include "platform.h"
#include <gnunet/gnunet_util_lib.h>
#include <gnunet/gnunet_json_lib.h>
#include <jansson.h>
#include <microhttpd.h>
#include <pthread.h>
#include "taler_json_lib.h"
#include "taler_mhd_lib.h"
#include "taler-auditor-httpd.h"
#include "taler-auditor-httpd_db.h"
#include "taler-auditor-httpd_exchanges.h"
/**
* Send confirmation of deposit-confirmation success to client.
*
* @param connection connection to the client
* @param ja array with information about exchanges
* @return MHD result code
*/
static int
reply_exchanges_success (struct MHD_Connection *connection,
json_t *ja)
{
return TALER_MHD_reply_json_pack (connection,
MHD_HTTP_OK,
"{s:o}",
"exchanges", ja);
}
/**
* Add exchange information to the list.
*
* @param[in,out] cls a `json_t *` array to extend
* @param master_pub master public key of an exchange
* @param exchange_url base URL of an exchange
*/
static void
add_exchange (void *cls,
const struct TALER_MasterPublicKeyP *master_pub,
const char *exchange_url)
{
json_t *list = cls;
json_t *obj;
obj = json_pack ("{s:o, s:s}",
"master_pub",
GNUNET_JSON_from_data_auto (master_pub),
"exchange_url",
exchange_url);
GNUNET_assert (NULL != obj);
GNUNET_assert (0 ==
json_array_append_new (list,
obj));
}
/**
* Execute database transaction for /exchanges. Obtains the list. IF
* it returns a non-error code, the transaction logic MUST NOT queue a
* MHD response. IF it returns an hard error, the transaction logic
* MUST queue a MHD response and set @a mhd_ret. IF it returns the
* soft error code, the function MAY be called again to retry and MUST
* not queue a MHD response.
*
* @param cls[in,out] a `json_t *` with an array of exchanges to be created
* @param connection MHD request context
* @param session database session and transaction to use
* @param[out] mhd_ret set to MHD status on error
* @return transaction status
*/
static enum GNUNET_DB_QueryStatus
list_exchanges (void *cls,
struct MHD_Connection *connection,
struct TALER_AUDITORDB_Session *session,
int *mhd_ret)
{
json_t *list = cls;
enum GNUNET_DB_QueryStatus qs;
qs = TAH_plugin->list_exchanges (TAH_plugin->cls,
session,
&add_exchange,
list);
if (GNUNET_DB_STATUS_HARD_ERROR == qs)
{
TALER_LOG_WARNING ("Failed to handle /exchanges in database\n");
*mhd_ret = TALER_MHD_reply_with_error (connection,
MHD_HTTP_INTERNAL_SERVER_ERROR,
TALER_EC_LIST_EXCHANGES_DB_ERROR,
"Could not fetch exchange list from database");
}
return qs;
}
/**
* Handle a "/exchanges" request.
*
* @param rh context of the handler
* @param connection the MHD connection to handle
* @param[in,out] connection_cls the connection's closure (can be updated)
* @param upload_data upload data
* @param[in,out] upload_data_size number of bytes (left) in @a upload_data
* @return MHD result code
*/
int
TAH_EXCHANGES_handler (struct TAH_RequestHandler *rh,
struct MHD_Connection *connection,
void **connection_cls,
const char *upload_data,
size_t *upload_data_size)
{
int mhd_ret;
json_t *ja;
ja = json_array ();
if (GNUNET_OK !=
TAH_DB_run_transaction (connection,
"list exchanges",
&mhd_ret,
&list_exchanges,
(void *) ja))
return mhd_ret;
return reply_exchanges_success (connection,
ja);
}
/* end of taler-auditor-httpd_exchanges.c */
|
