Line data Source code
1 : /*
2 : This file is part of TALER
3 : Copyright (C) 2020 Taler Systems SA
4 :
5 : TALER is free software; you can redistribute it and/or modify it under the
6 : terms of the GNU Affero General Public License as published by the Free Software
7 : Foundation; either version 3, or (at your option) any later version.
8 :
9 : TALER is distributed in the hope that it will be useful, but WITHOUT ANY
10 : WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
11 : A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.
12 :
13 : You should have received a copy of the GNU Affero General Public License along with
14 : TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
15 : */
16 : /**
17 : * @file taler-exchange-httpd_management_wire_disable.c
18 : * @brief Handle request to disable wire account.
19 : * @author Christian Grothoff
20 : */
21 : #include "platform.h"
22 : #include <gnunet/gnunet_util_lib.h>
23 : #include <gnunet/gnunet_json_lib.h>
24 : #include <jansson.h>
25 : #include <microhttpd.h>
26 : #include <pthread.h>
27 : #include "taler_json_lib.h"
28 : #include "taler_mhd_lib.h"
29 : #include "taler-exchange-httpd_management.h"
30 : #include "taler-exchange-httpd_responses.h"
31 : #include "taler-exchange-httpd_wire.h"
32 :
33 :
34 : /**
35 : * Closure for the #del_wire transaction.
36 : */
37 : struct DelWireContext
38 : {
39 : /**
40 : * Master signature affirming the WIRE DEL operation
41 : * (includes timestamp).
42 : */
43 : struct TALER_MasterSignatureP master_sig;
44 :
45 : /**
46 : * Payto:// URI this is about.
47 : */
48 : const char *payto_uri;
49 :
50 : /**
51 : * Timestamp for checking against replay attacks.
52 : */
53 : struct GNUNET_TIME_Timestamp validity_end;
54 :
55 : };
56 :
57 :
58 : /**
59 : * Function implementing database transaction to del an wire. Runs the
60 : * transaction logic; IF it returns a non-error code, the transaction logic
61 : * MUST NOT queue a MHD response. IF it returns an hard error, the
62 : * transaction logic MUST queue a MHD response and set @a mhd_ret. IF it
63 : * returns the soft error code, the function MAY be called again to retry and
64 : * MUST not queue a MHD response.
65 : *
66 : * @param cls closure with a `struct DelWireContext`
67 : * @param connection MHD request which triggered the transaction
68 : * @param[out] mhd_ret set to MHD response status for @a connection,
69 : * if transaction failed (!)
70 : * @return transaction status
71 : */
72 : static enum GNUNET_DB_QueryStatus
73 0 : del_wire (void *cls,
74 : struct MHD_Connection *connection,
75 : MHD_RESULT *mhd_ret)
76 : {
77 0 : struct DelWireContext *awc = cls;
78 : struct GNUNET_TIME_Timestamp last_date;
79 : enum GNUNET_DB_QueryStatus qs;
80 :
81 0 : qs = TEH_plugin->lookup_wire_timestamp (TEH_plugin->cls,
82 : awc->payto_uri,
83 : &last_date);
84 0 : if (qs < 0)
85 : {
86 0 : if (GNUNET_DB_STATUS_SOFT_ERROR == qs)
87 0 : return qs;
88 0 : GNUNET_break (0);
89 0 : *mhd_ret = TALER_MHD_reply_with_error (connection,
90 : MHD_HTTP_INTERNAL_SERVER_ERROR,
91 : TALER_EC_GENERIC_DB_FETCH_FAILED,
92 : "lookup wire");
93 0 : return qs;
94 : }
95 0 : if (GNUNET_TIME_timestamp_cmp (last_date,
96 : >,
97 : awc->validity_end))
98 : {
99 0 : *mhd_ret = TALER_MHD_reply_with_error (
100 : connection,
101 : MHD_HTTP_CONFLICT,
102 : TALER_EC_EXCHANGE_MANAGEMENT_WIRE_MORE_RECENT_PRESENT,
103 : NULL);
104 0 : return GNUNET_DB_STATUS_HARD_ERROR;
105 : }
106 0 : if (0 == qs)
107 : {
108 0 : *mhd_ret = TALER_MHD_reply_with_error (
109 : connection,
110 : MHD_HTTP_NOT_FOUND,
111 : TALER_EC_EXCHANGE_MANAGEMENT_WIRE_NOT_FOUND,
112 : NULL);
113 0 : return GNUNET_DB_STATUS_HARD_ERROR;
114 : }
115 0 : qs = TEH_plugin->update_wire (TEH_plugin->cls,
116 : awc->payto_uri,
117 : awc->validity_end,
118 : false);
119 0 : if (qs < 0)
120 : {
121 0 : GNUNET_break (0);
122 0 : if (GNUNET_DB_STATUS_SOFT_ERROR == qs)
123 0 : return qs;
124 0 : *mhd_ret = TALER_MHD_reply_with_error (connection,
125 : MHD_HTTP_INTERNAL_SERVER_ERROR,
126 : TALER_EC_GENERIC_DB_STORE_FAILED,
127 : "del wire");
128 0 : return qs;
129 : }
130 0 : return qs;
131 : }
132 :
133 :
134 : MHD_RESULT
135 0 : TEH_handler_management_post_wire_disable (
136 : struct MHD_Connection *connection,
137 : const json_t *root)
138 : {
139 : struct DelWireContext awc;
140 : struct GNUNET_JSON_Specification spec[] = {
141 0 : GNUNET_JSON_spec_fixed_auto ("master_sig_del",
142 : &awc.master_sig),
143 0 : GNUNET_JSON_spec_string ("payto_uri",
144 : &awc.payto_uri),
145 0 : GNUNET_JSON_spec_timestamp ("validity_end",
146 : &awc.validity_end),
147 0 : GNUNET_JSON_spec_end ()
148 : };
149 :
150 : {
151 : enum GNUNET_GenericReturnValue res;
152 :
153 0 : res = TALER_MHD_parse_json_data (connection,
154 : root,
155 : spec);
156 0 : if (GNUNET_SYSERR == res)
157 0 : return MHD_NO; /* hard failure */
158 0 : if (GNUNET_NO == res)
159 0 : return MHD_YES; /* failure */
160 : }
161 0 : if (GNUNET_OK !=
162 0 : TALER_exchange_offline_wire_del_verify (
163 : awc.payto_uri,
164 : awc.validity_end,
165 : &TEH_master_public_key,
166 : &awc.master_sig))
167 : {
168 0 : GNUNET_break_op (0);
169 0 : return TALER_MHD_reply_with_error (
170 : connection,
171 : MHD_HTTP_FORBIDDEN,
172 : TALER_EC_EXCHANGE_MANAGEMENT_WIRE_DEL_SIGNATURE_INVALID,
173 : NULL);
174 : }
175 :
176 : {
177 : enum GNUNET_GenericReturnValue res;
178 : MHD_RESULT ret;
179 :
180 0 : res = TEH_DB_run_transaction (connection,
181 : "del wire",
182 : TEH_MT_REQUEST_OTHER,
183 : &ret,
184 : &del_wire,
185 : &awc);
186 0 : if (GNUNET_SYSERR == res)
187 0 : return ret;
188 : }
189 0 : TEH_wire_update_state ();
190 0 : return TALER_MHD_reply_static (
191 : connection,
192 : MHD_HTTP_NO_CONTENT,
193 : NULL,
194 : NULL,
195 : 0);
196 : }
197 :
198 :
199 : /* end of taler-exchange-httpd_management_wire_disable.c */
|
