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27 package org.apache.hc.client5.http.impl.cookie;
28
29 import java.util.BitSet;
30 import java.util.Calendar;
31 import java.util.Locale;
32 import java.util.Map;
33 import java.util.TimeZone;
34 import java.util.concurrent.ConcurrentHashMap;
35 import java.util.regex.Matcher;
36 import java.util.regex.Pattern;
37
38 import org.apache.hc.client5.http.cookie.CommonCookieAttributeHandler;
39 import org.apache.hc.client5.http.cookie.Cookie;
40 import org.apache.hc.client5.http.cookie.MalformedCookieException;
41 import org.apache.hc.client5.http.cookie.SetCookie;
42 import org.apache.hc.core5.annotation.Contract;
43 import org.apache.hc.core5.annotation.ThreadingBehavior;
44 import org.apache.hc.core5.util.Args;
45 import org.apache.hc.core5.util.TextUtils;
46 import org.apache.hc.core5.util.Tokenizer;
47
48
49
50
51
52
53
54 @Contract(threading = ThreadingBehavior.STATELESS)
55 public class LaxExpiresHandler extends AbstractCookieAttributeHandler implements CommonCookieAttributeHandler {
56
57 static final TimeZone UTC = TimeZone.getTimeZone("UTC");
58
59 private static final BitSet DELIMS;
60 static {
61 final BitSet bitSet = new BitSet();
62 bitSet.set(0x9);
63 for (int b = 0x20; b <= 0x2f; b++) {
64 bitSet.set(b);
65 }
66 for (int b = 0x3b; b <= 0x40; b++) {
67 bitSet.set(b);
68 }
69 for (int b = 0x5b; b <= 0x60; b++) {
70 bitSet.set(b);
71 }
72 for (int b = 0x7b; b <= 0x7e; b++) {
73 bitSet.set(b);
74 }
75 DELIMS = bitSet;
76 }
77 private static final Map<String, Integer> MONTHS;
78 static {
79 final ConcurrentHashMap<String, Integer> map = new ConcurrentHashMap<>(12);
80 map.put("jan", Calendar.JANUARY);
81 map.put("feb", Calendar.FEBRUARY);
82 map.put("mar", Calendar.MARCH);
83 map.put("apr", Calendar.APRIL);
84 map.put("may", Calendar.MAY);
85 map.put("jun", Calendar.JUNE);
86 map.put("jul", Calendar.JULY);
87 map.put("aug", Calendar.AUGUST);
88 map.put("sep", Calendar.SEPTEMBER);
89 map.put("oct", Calendar.OCTOBER);
90 map.put("nov", Calendar.NOVEMBER);
91 map.put("dec", Calendar.DECEMBER);
92 MONTHS = map;
93 }
94
95 private final static Pattern TIME_PATTERN = Pattern.compile(
96 "^([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})([^0-9].*)?$");
97 private final static Pattern DAY_OF_MONTH_PATTERN = Pattern.compile(
98 "^([0-9]{1,2})([^0-9].*)?$");
99 private final static Pattern MONTH_PATTERN = Pattern.compile(
100 "^(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)(.*)?$", Pattern.CASE_INSENSITIVE);
101 private final static Pattern YEAR_PATTERN = Pattern.compile(
102 "^([0-9]{2,4})([^0-9].*)?$");
103
104 public LaxExpiresHandler() {
105 super();
106 }
107
108 @Override
109 public void parse(final SetCookie cookie, final String value) throws MalformedCookieException {
110 Args.notNull(cookie, "Cookie");
111 if (TextUtils.isBlank(value)) {
112 return;
113 }
114 final Tokenizer.Cursor cursor = new Tokenizer.Cursor(0, value.length());
115 final StringBuilder content = new StringBuilder();
116
117 int second = 0, minute = 0, hour = 0, day = 0, month = 0, year = 0;
118 boolean foundTime = false, foundDayOfMonth = false, foundMonth = false, foundYear = false;
119 try {
120 while (!cursor.atEnd()) {
121 skipDelims(value, cursor);
122 content.setLength(0);
123 copyContent(value, cursor, content);
124
125 if (content.length() == 0) {
126 break;
127 }
128 if (!foundTime) {
129 final Matcher matcher = TIME_PATTERN.matcher(content);
130 if (matcher.matches()) {
131 foundTime = true;
132 hour = Integer.parseInt(matcher.group(1));
133 minute = Integer.parseInt(matcher.group(2));
134 second =Integer.parseInt(matcher.group(3));
135 continue;
136 }
137 }
138 if (!foundDayOfMonth) {
139 final Matcher matcher = DAY_OF_MONTH_PATTERN.matcher(content);
140 if (matcher.matches()) {
141 foundDayOfMonth = true;
142 day = Integer.parseInt(matcher.group(1));
143 continue;
144 }
145 }
146 if (!foundMonth) {
147 final Matcher matcher = MONTH_PATTERN.matcher(content);
148 if (matcher.matches()) {
149 foundMonth = true;
150 month = MONTHS.get(matcher.group(1).toLowerCase(Locale.ROOT));
151 continue;
152 }
153 }
154 if (!foundYear) {
155 final Matcher matcher = YEAR_PATTERN.matcher(content);
156 if (matcher.matches()) {
157 foundYear = true;
158 year = Integer.parseInt(matcher.group(1));
159 continue;
160 }
161 }
162 }
163 } catch (final NumberFormatException ignore) {
164 throw new MalformedCookieException("Invalid 'expires' attribute: " + value);
165 }
166 if (!foundTime || !foundDayOfMonth || !foundMonth || !foundYear) {
167 throw new MalformedCookieException("Invalid 'expires' attribute: " + value);
168 }
169 if (year >= 70 && year <= 99) {
170 year = 1900 + year;
171 }
172 if (year >= 0 && year <= 69) {
173 year = 2000 + year;
174 }
175 if (day < 1 || day > 31 || year < 1601 || hour > 23 || minute > 59 || second > 59) {
176 throw new MalformedCookieException("Invalid 'expires' attribute: " + value);
177 }
178
179 final Calendar c = Calendar.getInstance();
180 c.setTimeZone(UTC);
181 c.setTimeInMillis(0L);
182 c.set(Calendar.SECOND, second);
183 c.set(Calendar.MINUTE, minute);
184 c.set(Calendar.HOUR_OF_DAY, hour);
185 c.set(Calendar.DAY_OF_MONTH, day);
186 c.set(Calendar.MONTH, month);
187 c.set(Calendar.YEAR, year);
188 cookie.setExpiryDate(c.getTime());
189 }
190
191 private void skipDelims(final CharSequence buf, final Tokenizer.Cursor cursor) {
192 int pos = cursor.getPos();
193 final int indexFrom = cursor.getPos();
194 final int indexTo = cursor.getUpperBound();
195 for (int i = indexFrom; i < indexTo; i++) {
196 final char current = buf.charAt(i);
197 if (DELIMS.get(current)) {
198 pos++;
199 } else {
200 break;
201 }
202 }
203 cursor.updatePos(pos);
204 }
205
206 private void copyContent(final CharSequence buf, final Tokenizer.Cursor cursor, final StringBuilder dst) {
207 int pos = cursor.getPos();
208 final int indexFrom = cursor.getPos();
209 final int indexTo = cursor.getUpperBound();
210 for (int i = indexFrom; i < indexTo; i++) {
211 final char current = buf.charAt(i);
212 if (DELIMS.get(current)) {
213 break;
214 }
215 pos++;
216 dst.append(current);
217 }
218 cursor.updatePos(pos);
219 }
220
221 @Override
222 public String getAttributeName() {
223 return Cookie.EXPIRES_ATTR;
224 }
225
226 }