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| 1 | +/* |
| 2 | + * jPOS Project [http://jpos.org] |
| 3 | + * Copyright (C) 2000-2017 jPOS Software SRL |
| 4 | + * |
| 5 | + * This program is free software: you can redistribute it and/or modify |
| 6 | + * it under the terms of the GNU Affero General Public License as |
| 7 | + * published by the Free Software Foundation, either version 3 of the |
| 8 | + * License, or (at your option) any later version. |
| 9 | + * |
| 10 | + * This program is distributed in the hope that it will be useful, |
| 11 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | + * GNU Affero General Public License for more details. |
| 14 | + * |
| 15 | + * You should have received a copy of the GNU Affero General Public License |
| 16 | + * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | + */ |
| 18 | + |
| 19 | +package org.jpos.transaction.participant; |
| 20 | + |
| 21 | +import java.util.Arrays; |
| 22 | +import java.util.Set; |
| 23 | +import java.util.HashSet; |
| 24 | +import java.util.StringTokenizer; |
| 25 | +import java.io.Serializable; |
| 26 | +import java.util.regex.Pattern; |
| 27 | + |
| 28 | +import org.jpos.core.*; |
| 29 | +import org.jpos.iso.*; |
| 30 | +import org.jpos.rc.CMF; |
| 31 | +import org.jpos.rc.Result; |
| 32 | +import org.jpos.transaction.Context; |
| 33 | +import org.jpos.transaction.ContextConstants; |
| 34 | +import org.jpos.transaction.TransactionParticipant; |
| 35 | +import org.jpos.util.Caller; |
| 36 | + |
| 37 | +import static org.jpos.transaction.ContextConstants.*; |
| 38 | + |
| 39 | +public class CheckFields implements TransactionParticipant, Configurable { |
| 40 | + private Configuration cfg; |
| 41 | + private String request; |
| 42 | + private Pattern PCODE_PATTERN = Pattern.compile("^[\\d|\\w]{6}$"); |
| 43 | + private Pattern TID_PATTERN = Pattern.compile("^\\w{1,16}"); |
| 44 | + private Pattern MID_PATTERN = Pattern.compile("^\\w{1,15}"); |
| 45 | + private Pattern TIMESTAMP_PATTERN = Pattern.compile("^\\d{10}"); |
| 46 | + private Pattern CAPTUREDATE_PATTERN = Pattern.compile("^\\d{4}"); |
| 47 | + private Pattern ORIGINAL_DATA_ELEMENTS_PATTERN = Pattern.compile("^\\d{30,41}$"); |
| 48 | + |
| 49 | + public int prepare (long id, Serializable context) { |
| 50 | + Context ctx = (Context) context; |
| 51 | + Result rc = ctx.getResult(); |
| 52 | + try { |
| 53 | + ISOMsg m = (ISOMsg) ctx.get (request); |
| 54 | + if (m == null) { |
| 55 | + ctx.getResult().fail(CMF.INVALID_TRANSACTION, Caller.info(), "'%s' not available in Context", request); |
| 56 | + return ABORTED | NO_JOIN | READONLY; |
| 57 | + } |
| 58 | + Set<String> validFields = new HashSet<>(); |
| 59 | + assertFields (ctx, m, cfg.get ("mandatory", ""), true, validFields, rc); |
| 60 | + assertFields (ctx, m, cfg.get ("optional", ""), false, validFields, rc); |
| 61 | + assertNoExtraFields (m, validFields, rc); |
| 62 | + } catch (Throwable t) { |
| 63 | + rc.fail(CMF.SYSTEM_ERROR, Caller.info(), t.getMessage()); |
| 64 | + ctx.log(t); |
| 65 | + } |
| 66 | + return (rc.hasFailures() ? ABORTED : PREPARED) | NO_JOIN | READONLY; |
| 67 | + } |
| 68 | + |
| 69 | + public void setConfiguration (Configuration cfg) { |
| 70 | + this.cfg = cfg; |
| 71 | + request = cfg.get ("request", ContextConstants.REQUEST.toString()); |
| 72 | + } |
| 73 | + |
| 74 | + private void assertFields(Context ctx, ISOMsg m, String fields, boolean mandatory, Set<String> validFields, Result rc) { |
| 75 | + StringTokenizer st = new StringTokenizer (fields, ", "); |
| 76 | + while (st.hasMoreTokens()) { |
| 77 | + String s = st.nextToken(); |
| 78 | + ContextConstants k = null; |
| 79 | + try { |
| 80 | + k = ContextConstants.valueOf(s); |
| 81 | + } catch (IllegalArgumentException ignored) { } |
| 82 | + if (k != null) { |
| 83 | + switch (k) { |
| 84 | + case PCODE: |
| 85 | + putPCode(ctx, m, mandatory, validFields, rc); |
| 86 | + break; |
| 87 | + case CARD: |
| 88 | + putCard(ctx, m, mandatory, validFields, rc); |
| 89 | + break; |
| 90 | + case TID: |
| 91 | + putTid(ctx, m, mandatory, validFields, rc); |
| 92 | + break; |
| 93 | + case MID: |
| 94 | + putMid(ctx, m, mandatory, validFields, rc); |
| 95 | + break; |
| 96 | + case TRANSMISSION_TIMESTAMP: |
| 97 | + putTimestamp(ctx, m, TRANSMISSION_TIMESTAMP.toString(), 7, mandatory, validFields, rc); |
| 98 | + break; |
| 99 | + case TRANSACTION_TIMESTAMP: |
| 100 | + putTimestamp(ctx, m, TRANSACTION_TIMESTAMP.toString(), 12, mandatory, validFields, rc); |
| 101 | + break; |
| 102 | + case POS_DATA_CODE: |
| 103 | + putPDC(ctx, m, mandatory, validFields, rc); |
| 104 | + break; |
| 105 | + case CAPTURE_DATE: |
| 106 | + putCaptureDate(ctx, m, mandatory, validFields, rc); |
| 107 | + break; |
| 108 | + case AMOUNT: |
| 109 | + putAmount(ctx, m, mandatory, validFields, rc); |
| 110 | + break; |
| 111 | + case ORIGINAL_DATA_ELEMENTS: |
| 112 | + putOriginalDataElements(ctx, m, mandatory, validFields, rc); |
| 113 | + break; |
| 114 | + default: |
| 115 | + k = null; |
| 116 | + } |
| 117 | + } |
| 118 | + if (k == null) { |
| 119 | + if (mandatory && !m.hasField(s)) |
| 120 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), s); |
| 121 | + else |
| 122 | + validFields.add(s); |
| 123 | + } |
| 124 | + } |
| 125 | + } |
| 126 | + private void assertNoExtraFields (ISOMsg m, Set validFields, Result rc) { |
| 127 | + StringBuffer sb = new StringBuffer(); |
| 128 | + for (int i=1; i<=m.getMaxField(); i++) { // we start at 1, MTI is always valid |
| 129 | + String s = Integer.toString (i); |
| 130 | + if (m.hasField(i) && !validFields.contains (s)) { |
| 131 | + if (sb.length() > 0) |
| 132 | + sb.append (' '); |
| 133 | + sb.append (s); |
| 134 | + } |
| 135 | + } |
| 136 | + if (sb.length() > 0) |
| 137 | + rc.fail(CMF.EXTRA_FIELD, Caller.info(), sb.toString()); |
| 138 | + } |
| 139 | + |
| 140 | + private void putCard (Context ctx, ISOMsg m, boolean mandatory, Set<String> validFields, Result rc) { |
| 141 | + try { |
| 142 | + Card card = Card.builder().isomsg(m).build(); |
| 143 | + ctx.put (ContextConstants.CARD.toString(), card); |
| 144 | + if (card.hasTrack1()) |
| 145 | + validFields.add("45"); |
| 146 | + if (card.hasTrack2()) |
| 147 | + validFields.add("35"); |
| 148 | + if (card.getPan() != null && m.hasField(2)) |
| 149 | + validFields.add("2"); |
| 150 | + if (card.getExp() != null && m.hasField(14)) |
| 151 | + validFields.add("14"); |
| 152 | + } catch (InvalidCardException e) { |
| 153 | + validFields.addAll(Arrays.asList("2", "14", "35", "45")); |
| 154 | + if (mandatory) { |
| 155 | + rc.fail((m.hasAny("2", "14", "35", "45") ? CMF.INVALID_CARD_NUMBER : CMF.MISSING_FIELD), |
| 156 | + Caller.info(), e.getMessage()); |
| 157 | + } |
| 158 | + else |
| 159 | + rc.warn(Caller.info(), e.getMessage()); |
| 160 | + } |
| 161 | + } |
| 162 | + |
| 163 | + private void putPCode (Context ctx, ISOMsg m, boolean mandatory, Set<String> validFields, Result rc) { |
| 164 | + if (m.hasField(3)) { |
| 165 | + String s = m.getString(3); |
| 166 | + validFields.add("3"); |
| 167 | + if (PCODE_PATTERN.matcher(s).matches()) { |
| 168 | + ctx.put(ContextConstants.PCODE.toString(), m.getString(3)); |
| 169 | + } else |
| 170 | + rc.fail(CMF.INVALID_FIELD, Caller.info(), "Invalid PCODE '%s'", s); |
| 171 | + } else if (mandatory) { |
| 172 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), "PCODE"); |
| 173 | + } |
| 174 | + } |
| 175 | + |
| 176 | + private void putTid (Context ctx, ISOMsg m, boolean mandatory, Set<String> validFields, Result rc) { |
| 177 | + if (m.hasField(41)) { |
| 178 | + String s = m.getString(41); |
| 179 | + validFields.add("41"); |
| 180 | + if (TID_PATTERN.matcher(s).matches()) { |
| 181 | + ctx.put(ContextConstants.TID.toString(), m.getString(41)); |
| 182 | + } else |
| 183 | + rc.fail(CMF.INVALID_FIELD, Caller.info(), "Invalid TID '%s'", s); |
| 184 | + } else if (mandatory) { |
| 185 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), "TID"); |
| 186 | + } |
| 187 | + } |
| 188 | + |
| 189 | + private void putMid (Context ctx, ISOMsg m, boolean mandatory, Set<String> validFields, Result rc) { |
| 190 | + if (m.hasField(42)) { |
| 191 | + String s = m.getString(42); |
| 192 | + validFields.add("42"); |
| 193 | + if (MID_PATTERN.matcher(s).matches()) { |
| 194 | + ctx.put(ContextConstants.MID.toString(), m.getString(41)); |
| 195 | + } else |
| 196 | + rc.fail(CMF.INVALID_FIELD, Caller.info(), "Invalid MID '%s'", s); |
| 197 | + } else if (mandatory) { |
| 198 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), "MID"); |
| 199 | + } |
| 200 | + } |
| 201 | + private void putTimestamp (Context ctx, ISOMsg m, String key, int fieldNumber, boolean mandatory, Set<String> validFields, Result rc) { |
| 202 | + if (m.hasField(fieldNumber)) { |
| 203 | + String s = m.getString(fieldNumber); |
| 204 | + validFields.add(Integer.toString(fieldNumber)); |
| 205 | + if (TIMESTAMP_PATTERN.matcher(s).matches()) |
| 206 | + ctx.put (key, ISODate.parseISODate(s)); |
| 207 | + else |
| 208 | + rc.fail(CMF.INVALID_FIELD, Caller.info(), "Invalid %s '%s'", key, s); |
| 209 | + } else if (mandatory) { |
| 210 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), TRANSMISSION_TIMESTAMP.toString()); |
| 211 | + } |
| 212 | + } |
| 213 | + |
| 214 | + private void putCaptureDate (Context ctx, ISOMsg m, boolean mandatory, Set<String> validFields, Result rc) { |
| 215 | + if (m.hasField(17)) { |
| 216 | + String s = m.getString(17); |
| 217 | + validFields.add("17"); |
| 218 | + if (CAPTUREDATE_PATTERN.matcher(s).matches()) |
| 219 | + ctx.put (CAPTURE_DATE.toString(), ISODate.parseISODate(s + "120000")); |
| 220 | + else |
| 221 | + rc.fail(CMF.INVALID_FIELD, Caller.info(), "Invalid %s '%s'", CAPTURE_DATE, s); |
| 222 | + } else if (mandatory) { |
| 223 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), CAPTURE_DATE.toString()); |
| 224 | + } |
| 225 | + } |
| 226 | + |
| 227 | + private void putPDC (Context ctx, ISOMsg m, boolean mandatory, Set<String> validFields, Result rc) { |
| 228 | + if (m.hasField(22)) { |
| 229 | + byte[] b = m.getBytes(22); |
| 230 | + validFields.add("22"); |
| 231 | + if (b.length != 16) { |
| 232 | + rc.fail( |
| 233 | + CMF.INVALID_FIELD, |
| 234 | + Caller.info(), "Invalid %s '%s'", |
| 235 | + ContextConstants.POS_DATA_CODE.toString(), |
| 236 | + ISOUtil.hexString(b) |
| 237 | + ); |
| 238 | + } |
| 239 | + else { |
| 240 | + ctx.put(ContextConstants.POS_DATA_CODE.toString(), PosDataCode.valueOf(m.getBytes(22))); |
| 241 | + } |
| 242 | + } else if (mandatory) { |
| 243 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), ContextConstants.POS_DATA_CODE.toString()); |
| 244 | + } |
| 245 | + } |
| 246 | + |
| 247 | + private void putAmount (Context ctx, ISOMsg m, boolean mandatory,Set<String> validFields, Result rc) { |
| 248 | + Object o4 = m.getComponent(4); |
| 249 | + Object o5 = m.getComponent(5); |
| 250 | + ISOAmount a4 = null; |
| 251 | + ISOAmount a5 = null; |
| 252 | + if (o4 instanceof ISOAmount) { |
| 253 | + a4 = (ISOAmount) o4; |
| 254 | + validFields.add("4"); |
| 255 | + } |
| 256 | + if (o5 instanceof ISOAmount) { |
| 257 | + a5 = (ISOAmount) o5; |
| 258 | + validFields.add("5"); |
| 259 | + } |
| 260 | + if (a5 != null) { |
| 261 | + ctx.put (AMOUNT.toString(), a5); |
| 262 | + if (a4 != null) { |
| 263 | + ctx.put (LOCAL_AMOUNT.toString(), a4); |
| 264 | + } |
| 265 | + } else if (a4 != null) { |
| 266 | + ctx.put (AMOUNT.toString(), a4); |
| 267 | + } |
| 268 | + if (mandatory && (a4 == null && a5 == null)) |
| 269 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), ContextConstants.AMOUNT.toString()); |
| 270 | + } |
| 271 | + |
| 272 | + private void putOriginalDataElements (Context ctx, ISOMsg m, boolean mandatory, Set<String> validFields, Result rc) { |
| 273 | + String s = m.getString(56); |
| 274 | + if (s != null) { |
| 275 | + validFields.add("56"); |
| 276 | + if (ORIGINAL_DATA_ELEMENTS_PATTERN.matcher(s).matches()) { |
| 277 | + ctx.put (ORIGINAL_MTI.toString(), s.substring(0,4)); |
| 278 | + ctx.put (ORIGINAL_STAN.toString(), s.substring(4,16)); |
| 279 | + ctx.put (ORIGINAL_TIMESTAMP.toString(), ISODate.parseISODate (s.substring(16,30))); |
| 280 | + } else { |
| 281 | + rc.fail(CMF.INVALID_FIELD, Caller.info(), "Invalid %s '%s'", ORIGINAL_DATA_ELEMENTS, s); |
| 282 | + } |
| 283 | + } else if (mandatory) { |
| 284 | + rc.fail(CMF.MISSING_FIELD, Caller.info(), ContextConstants.ORIGINAL_DATA_ELEMENTS.toString()); |
| 285 | + } |
| 286 | + } |
| 287 | +} |
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