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 package org.apache.hc.client5.http.impl.cookie;
28
29 import java.time.Instant;
30 import java.time.Month;
31 import java.time.ZoneId;
32 import java.time.ZonedDateTime;
33 import java.util.BitSet;
34 import java.util.Locale;
35 import java.util.Map;
36 import java.util.concurrent.ConcurrentHashMap;
37 import java.util.regex.Matcher;
38 import java.util.regex.Pattern;
39
40 import org.apache.hc.client5.http.cookie.CommonCookieAttributeHandler;
41 import org.apache.hc.client5.http.cookie.Cookie;
42 import org.apache.hc.client5.http.cookie.MalformedCookieException;
43 import org.apache.hc.client5.http.cookie.SetCookie;
44 import org.apache.hc.core5.annotation.Contract;
45 import org.apache.hc.core5.annotation.ThreadingBehavior;
46 import org.apache.hc.core5.util.Args;
47 import org.apache.hc.core5.util.TextUtils;
48 import org.apache.hc.core5.util.Tokenizer;
49
50
51
52
53
54
55
56 @Contract(threading = ThreadingBehavior.STATELESS)
57 public class LaxExpiresHandler extends AbstractCookieAttributeHandler implements CommonCookieAttributeHandler {
58
59
60
61
62
63
64 public static final LaxExpiresHandler INSTANCE = new LaxExpiresHandler();
65
66 private static final BitSet DELIMS;
67 static {
68 final BitSet bitSet = new BitSet();
69 bitSet.set(0x9);
70 for (int b = 0x20; b <= 0x2f; b++) {
71 bitSet.set(b);
72 }
73 for (int b = 0x3b; b <= 0x40; b++) {
74 bitSet.set(b);
75 }
76 for (int b = 0x5b; b <= 0x60; b++) {
77 bitSet.set(b);
78 }
79 for (int b = 0x7b; b <= 0x7e; b++) {
80 bitSet.set(b);
81 }
82 DELIMS = bitSet;
83 }
84 private static final Map<String, Month> MONTHS;
85 static {
86 final ConcurrentHashMap<String, Month> map = new ConcurrentHashMap<>(12);
87 map.put("jan", Month.JANUARY);
88 map.put("feb", Month.FEBRUARY);
89 map.put("mar", Month.MARCH);
90 map.put("apr", Month.APRIL);
91 map.put("may", Month.MAY);
92 map.put("jun", Month.JUNE);
93 map.put("jul", Month.JULY);
94 map.put("aug", Month.AUGUST);
95 map.put("sep", Month.SEPTEMBER);
96 map.put("oct", Month.OCTOBER);
97 map.put("nov", Month.NOVEMBER);
98 map.put("dec", Month.DECEMBER);
99 MONTHS = map;
100 }
101
102 private final static Pattern TIME_PATTERN = Pattern.compile(
103 "^([0-9]{1,2}):([0-9]{1,2}):([0-9]{1,2})([^0-9].*)?$");
104 private final static Pattern DAY_OF_MONTH_PATTERN = Pattern.compile(
105 "^([0-9]{1,2})([^0-9].*)?$");
106 private final static Pattern MONTH_PATTERN = Pattern.compile(
107 "^(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)(.*)?$", Pattern.CASE_INSENSITIVE);
108 private final static Pattern YEAR_PATTERN = Pattern.compile(
109 "^([0-9]{2,4})([^0-9].*)?$");
110
111 public LaxExpiresHandler() {
112 super();
113 }
114
115 @Override
116 public void parse(final SetCookie cookie, final String value) throws MalformedCookieException {
117 Args.notNull(cookie, "Cookie");
118 if (TextUtils.isBlank(value)) {
119 return;
120 }
121 final Tokenizer.Cursor cursor = new Tokenizer.Cursor(0, value.length());
122 final StringBuilder content = new StringBuilder();
123
124 int second = 0, minute = 0, hour = 0, day = 0, year = 0;
125 Month month = Month.JANUARY;
126 boolean foundTime = false, foundDayOfMonth = false, foundMonth = false, foundYear = false;
127 try {
128 while (!cursor.atEnd()) {
129 skipDelims(value, cursor);
130 content.setLength(0);
131 copyContent(value, cursor, content);
132
133 if (content.length() == 0) {
134 break;
135 }
136 if (!foundTime) {
137 final Matcher matcher = TIME_PATTERN.matcher(content);
138 if (matcher.matches()) {
139 foundTime = true;
140 hour = Integer.parseInt(matcher.group(1));
141 minute = Integer.parseInt(matcher.group(2));
142 second =Integer.parseInt(matcher.group(3));
143 continue;
144 }
145 }
146 if (!foundDayOfMonth) {
147 final Matcher matcher = DAY_OF_MONTH_PATTERN.matcher(content);
148 if (matcher.matches()) {
149 foundDayOfMonth = true;
150 day = Integer.parseInt(matcher.group(1));
151 continue;
152 }
153 }
154 if (!foundMonth) {
155 final Matcher matcher = MONTH_PATTERN.matcher(content);
156 if (matcher.matches()) {
157 foundMonth = true;
158 month = MONTHS.get(matcher.group(1).toLowerCase(Locale.ROOT));
159 continue;
160 }
161 }
162 if (!foundYear) {
163 final Matcher matcher = YEAR_PATTERN.matcher(content);
164 if (matcher.matches()) {
165 foundYear = true;
166 year = Integer.parseInt(matcher.group(1));
167 continue;
168 }
169 }
170 }
171 } catch (final NumberFormatException ignore) {
172 throw new MalformedCookieException("Invalid 'expires' attribute: " + value);
173 }
174 if (!foundTime || !foundDayOfMonth || !foundMonth || !foundYear) {
175 throw new MalformedCookieException("Invalid 'expires' attribute: " + value);
176 }
177 if (year >= 70 && year <= 99) {
178 year = 1900 + year;
179 }
180 if (year >= 0 && year <= 69) {
181 year = 2000 + year;
182 }
183 if (day < 1 || day > 31 || year < 1601 || hour > 23 || minute > 59 || second > 59) {
184 throw new MalformedCookieException("Invalid 'expires' attribute: " + value);
185 }
186
187 final Instant expiryDate = ZonedDateTime.of(year, month.getValue(), day, hour, minute, second, 0,
188 ZoneId.of("UTC")).toInstant();
189 cookie.setExpiryDate(expiryDate);
190 }
191
192 private void skipDelims(final CharSequence buf, final Tokenizer.Cursor cursor) {
193 int pos = cursor.getPos();
194 final int indexFrom = cursor.getPos();
195 final int indexTo = cursor.getUpperBound();
196 for (int i = indexFrom; i < indexTo; i++) {
197 final char current = buf.charAt(i);
198 if (DELIMS.get(current)) {
199 pos++;
200 } else {
201 break;
202 }
203 }
204 cursor.updatePos(pos);
205 }
206
207 private void copyContent(final CharSequence buf, final Tokenizer.Cursor cursor, final StringBuilder dst) {
208 int pos = cursor.getPos();
209 final int indexFrom = cursor.getPos();
210 final int indexTo = cursor.getUpperBound();
211 for (int i = indexFrom; i < indexTo; i++) {
212 final char current = buf.charAt(i);
213 if (DELIMS.get(current)) {
214 break;
215 }
216 pos++;
217 dst.append(current);
218 }
219 cursor.updatePos(pos);
220 }
221
222 @Override
223 public String getAttributeName() {
224 return Cookie.EXPIRES_ATTR;
225 }
226
227 }