taler-exchange-httpd_management_wire_disable.c (6380B)
1 /* 2 This file is part of TALER 3 Copyright (C) 2020-2023 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 "taler/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/taler_json_lib.h" 28 #include "taler/taler_mhd_lib.h" 29 #include "taler-exchange-httpd_management.h" 30 #include "taler-exchange-httpd_responses.h" 31 #include "taler-exchange-httpd_keys.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 struct TALER_FullPayto 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 del_wire (void *cls, 74 struct MHD_Connection *connection, 75 MHD_RESULT *mhd_ret) 76 { 77 struct DelWireContext *awc = cls; 78 struct GNUNET_TIME_Timestamp last_date; 79 enum GNUNET_DB_QueryStatus qs; 80 81 qs = TEH_plugin->lookup_wire_timestamp (TEH_plugin->cls, 82 awc->payto_uri, 83 &last_date); 84 if (qs < 0) 85 { 86 if (GNUNET_DB_STATUS_SOFT_ERROR == qs) 87 return qs; 88 GNUNET_break (0); 89 *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 return qs; 94 } 95 if (GNUNET_TIME_timestamp_cmp (last_date, 96 >, 97 awc->validity_end)) 98 { 99 *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 return GNUNET_DB_STATUS_HARD_ERROR; 105 } 106 if (GNUNET_DB_STATUS_SUCCESS_NO_RESULTS == qs) 107 { 108 *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 return GNUNET_DB_STATUS_HARD_ERROR; 114 } 115 qs = TEH_plugin->update_wire (TEH_plugin->cls, 116 awc->payto_uri, 117 NULL, 118 NULL, 119 NULL, 120 NULL, 121 NULL, 122 awc->validity_end, 123 NULL, 124 NULL, 125 0, 126 false); 127 if (qs < 0) 128 { 129 GNUNET_break (0); 130 if (GNUNET_DB_STATUS_SOFT_ERROR == qs) 131 return qs; 132 *mhd_ret = TALER_MHD_reply_with_error (connection, 133 MHD_HTTP_INTERNAL_SERVER_ERROR, 134 TALER_EC_GENERIC_DB_STORE_FAILED, 135 "del wire"); 136 return qs; 137 } 138 return qs; 139 } 140 141 142 MHD_RESULT 143 TEH_handler_management_post_wire_disable ( 144 struct MHD_Connection *connection, 145 const json_t *root) 146 { 147 struct DelWireContext awc; 148 struct GNUNET_JSON_Specification spec[] = { 149 GNUNET_JSON_spec_fixed_auto ("master_sig_del", 150 &awc.master_sig), 151 TALER_JSON_spec_full_payto_uri ("payto_uri", 152 &awc.payto_uri), 153 GNUNET_JSON_spec_timestamp ("validity_end", 154 &awc.validity_end), 155 GNUNET_JSON_spec_end () 156 }; 157 158 { 159 enum GNUNET_GenericReturnValue res; 160 161 res = TALER_MHD_parse_json_data (connection, 162 root, 163 spec); 164 if (GNUNET_SYSERR == res) 165 return MHD_NO; /* hard failure */ 166 if (GNUNET_NO == res) 167 return MHD_YES; /* failure */ 168 } 169 if (GNUNET_OK != 170 TALER_exchange_offline_wire_del_verify ( 171 awc.payto_uri, 172 awc.validity_end, 173 &TEH_master_public_key, 174 &awc.master_sig)) 175 { 176 GNUNET_break_op (0); 177 return TALER_MHD_reply_with_error ( 178 connection, 179 MHD_HTTP_FORBIDDEN, 180 TALER_EC_EXCHANGE_MANAGEMENT_WIRE_DEL_SIGNATURE_INVALID, 181 NULL); 182 } 183 184 { 185 enum GNUNET_GenericReturnValue res; 186 MHD_RESULT ret; 187 188 res = TEH_DB_run_transaction (connection, 189 "del wire", 190 TEH_MT_REQUEST_OTHER, 191 &ret, 192 &del_wire, 193 &awc); 194 if (GNUNET_SYSERR == res) 195 return ret; 196 } 197 TEH_wire_update_state (); 198 return TALER_MHD_reply_static ( 199 connection, 200 MHD_HTTP_NO_CONTENT, 201 NULL, 202 NULL, 203 0); 204 } 205 206 207 /* end of taler-exchange-httpd_management_wire_disable.c */