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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 class _HttpUtils { | |
| 6 static String decodeUrlEncodedString(String urlEncoded) { | |
| 7 // First check the string for any encoding. | |
| 8 int index = 0; | |
| 9 bool encoded = false; | |
| 10 while (!encoded && index < urlEncoded.length) { | |
| 11 encoded = urlEncoded[index] == "+" || urlEncoded[index] == "%"; | |
| 12 index++; | |
| 13 } | |
| 14 if (!encoded) return urlEncoded; | |
| 15 index--; | |
| 16 | |
| 17 // Start decoding from the first encoded character. | |
| 18 List<int> bytes = new List<int>(); | |
| 19 for (int i = 0; i < index; i++) bytes.add(urlEncoded.charCodeAt(i)); | |
| 20 for (int i = index; i < urlEncoded.length; i++) { | |
| 21 if (urlEncoded[i] == "+") { | |
| 22 bytes.add(32); | |
| 23 } else if (urlEncoded[i] == "%") { | |
| 24 if (urlEncoded.length - i < 2) { | |
| 25 throw new HttpException("Invalid URL encoding"); | |
| 26 } | |
| 27 int byte = 0; | |
| 28 for (int j = 0; j < 2; j++) { | |
| 29 var charCode = urlEncoded.charCodeAt(i + j + 1); | |
| 30 if (0x30 <= charCode && charCode <= 0x39) { | |
| 31 byte = byte * 16 + charCode - 0x30; | |
| 32 } else if (0x41 <= charCode && charCode <= 0x46) { | |
| 33 byte = byte * 16 + charCode - 0x37; | |
| 34 } else if (0x61 <= charCode && charCode <= 0x66) { | |
| 35 byte = byte * 16 + charCode - 0x57; | |
| 36 } else { | |
| 37 throw new HttpException("Invalid URL encoding"); | |
| 38 } | |
| 39 } | |
| 40 bytes.add(byte); | |
| 41 i += 2; | |
| 42 } else { | |
| 43 bytes.add(urlEncoded.charCodeAt(i)); | |
| 44 } | |
| 45 } | |
| 46 return decodeUtf8(bytes); | |
| 47 } | |
| 48 | |
| 49 static Map<String, String> splitQueryString(String queryString) { | |
| 50 Map<String, String> result = new Map<String, String>(); | |
| 51 int currentPosition = 0; | |
| 52 while (currentPosition < queryString.length) { | |
| 53 int position = queryString.indexOf("=", currentPosition); | |
| 54 if (position == -1) { | |
| 55 break; | |
| 56 } | |
| 57 String name = queryString.substring(currentPosition, position); | |
| 58 currentPosition = position + 1; | |
| 59 position = queryString.indexOf("&", currentPosition); | |
| 60 String value; | |
| 61 if (position == -1) { | |
| 62 value = queryString.substring(currentPosition); | |
| 63 currentPosition = queryString.length; | |
| 64 } else { | |
| 65 value = queryString.substring(currentPosition, position); | |
| 66 currentPosition = position + 1; | |
| 67 } | |
| 68 result[_HttpUtils.decodeUrlEncodedString(name)] = | |
| 69 _HttpUtils.decodeUrlEncodedString(value); | |
| 70 } | |
| 71 return result; | |
| 72 } | |
| 73 | |
| 74 // From RFC 2616 section "3.3.1 Full Date" | |
| 75 // HTTP-date = rfc1123-date | rfc850-date | asctime-date | |
| 76 // rfc1123-date = wkday "," SP date1 SP time SP "GMT" | |
| 77 // rfc850-date = weekday "," SP date2 SP time SP "GMT" | |
| 78 // asctime-date = wkday SP date3 SP time SP 4DIGIT | |
| 79 // date1 = 2DIGIT SP month SP 4DIGIT | |
| 80 // ; day month year (e.g., 02 Jun 1982) | |
| 81 // date2 = 2DIGIT "-" month "-" 2DIGIT | |
| 82 // ; day-month-year (e.g., 02-Jun-82) | |
| 83 // date3 = month SP ( 2DIGIT | ( SP 1DIGIT )) | |
| 84 // ; month day (e.g., Jun 2) | |
| 85 // time = 2DIGIT ":" 2DIGIT ":" 2DIGIT | |
| 86 // ; 00:00:00 - 23:59:59 | |
| 87 // wkday = "Mon" | "Tue" | "Wed" | |
| 88 // | "Thu" | "Fri" | "Sat" | "Sun" | |
| 89 // weekday = "Monday" | "Tuesday" | "Wednesday" | |
| 90 // | "Thursday" | "Friday" | "Saturday" | "Sunday" | |
| 91 // month = "Jan" | "Feb" | "Mar" | "Apr" | |
| 92 // | "May" | "Jun" | "Jul" | "Aug" | |
| 93 // | "Sep" | "Oct" | "Nov" | "Dec" | |
| 94 | |
| 95 // Format as RFC 1123 date. | |
| 96 static String formatDate(Date date) { | |
| 97 const List wkday = const ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]; | |
| 98 const List month = const ["Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
| 99 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]; | |
| 100 | |
| 101 Date d = date.toUtc(); | |
| 102 StringBuffer sb = new StringBuffer(); | |
| 103 sb.add(wkday[d.weekday - 1]); | |
| 104 sb.add(", "); | |
| 105 sb.add(d.day.toString()); | |
| 106 sb.add(" "); | |
| 107 sb.add(month[d.month - 1]); | |
| 108 sb.add(" "); | |
| 109 sb.add(d.year.toString()); | |
| 110 d.hour < 9 ? sb.add(" 0") : sb.add(" "); | |
| 111 sb.add(d.hour.toString()); | |
| 112 d.minute < 9 ? sb.add(":0") : sb.add(":"); | |
| 113 sb.add(d.minute.toString()); | |
| 114 d.second < 9 ? sb.add(":0") : sb.add(":"); | |
| 115 sb.add(d.second.toString()); | |
| 116 sb.add(" GMT"); | |
| 117 return sb.toString(); | |
| 118 } | |
| 119 | |
| 120 static Date parseDate(String date) { | |
| 121 final int SP = 32; | |
| 122 const List wkdays = const ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]; | |
| 123 const List weekdays = const ["Monday", "Tuesday", "Wednesday", "Thursday", | |
| 124 "Friday", "Saturday", "Sunday"]; | |
| 125 const List months = const ["Jan", "Feb", "Mar", "Apr", "May", "Jun", | |
| 126 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]; | |
| 127 const List wkdaysLowerCase = | |
| 128 const ["mon", "tue", "wed", "thu", "fri", "sat", "sun"]; | |
| 129 const List weekdaysLowerCase = const ["monday", "tuesday", "wednesday", | |
| 130 "thursday", "friday", "saturday", | |
| 131 "sunday"]; | |
| 132 const List monthsLowerCase = const ["jan", "feb", "mar", "apr", "may", | |
| 133 "jun", "jul", "aug", "sep", "oct", | |
| 134 "nov", "dec"]; | |
| 135 | |
| 136 final int formatRfc1123 = 0; | |
| 137 final int formatRfc850 = 1; | |
| 138 final int formatAsctime = 2; | |
| 139 | |
| 140 int index = 0; | |
| 141 String tmp; | |
| 142 int format; | |
| 143 | |
| 144 void expect(String s) { | |
| 145 if (date.length - index < s.length) { | |
| 146 throw new HttpException("Invalid HTTP date $date"); | |
| 147 } | |
| 148 String tmp = date.substring(index, index + s.length); | |
| 149 if (tmp != s) { | |
| 150 throw new HttpException("Invalid HTTP date $date"); | |
| 151 } | |
| 152 index += s.length; | |
| 153 } | |
| 154 | |
| 155 int expectWeekday() { | |
| 156 int weekday; | |
| 157 // The formatting of the weekday signals the format of the date string. | |
| 158 int pos = date.indexOf(",", index); | |
| 159 if (pos == -1) { | |
| 160 int pos = date.indexOf(" ", index); | |
| 161 if (pos == -1) throw new HttpException("Invalid HTTP date $date"); | |
| 162 tmp = date.substring(index, pos); | |
| 163 index = pos + 1; | |
| 164 weekday = wkdays.indexOf(tmp); | |
| 165 if (weekday != -1) { | |
| 166 format = formatAsctime; | |
| 167 return weekday; | |
| 168 } | |
| 169 } else { | |
| 170 tmp = date.substring(index, pos); | |
| 171 index = pos + 1; | |
| 172 weekday = wkdays.indexOf(tmp); | |
| 173 if (weekday != -1) { | |
| 174 format = formatRfc1123; | |
| 175 return weekday; | |
| 176 } | |
| 177 weekday = weekdays.indexOf(tmp); | |
| 178 if (weekday != -1) { | |
| 179 format = formatRfc850; | |
| 180 return weekday; | |
| 181 } | |
| 182 } | |
| 183 throw new HttpException("Invalid HTTP date $date"); | |
| 184 } | |
| 185 | |
| 186 int expectMonth(String separator) { | |
| 187 int pos = date.indexOf(separator, index); | |
| 188 if (pos - index != 3) throw new HttpException("Invalid HTTP date $date"); | |
| 189 tmp = date.substring(index, pos); | |
| 190 index = pos + 1; | |
| 191 int month = months.indexOf(tmp); | |
| 192 if (month != -1) return month; | |
| 193 throw new HttpException("Invalid HTTP date $date"); | |
| 194 } | |
| 195 | |
| 196 int expectNum(String separator) { | |
| 197 int pos; | |
| 198 if (separator.length > 0) { | |
| 199 pos = date.indexOf(separator, index); | |
| 200 } else { | |
| 201 pos = date.length; | |
| 202 } | |
| 203 String tmp = date.substring(index, pos); | |
| 204 index = pos + separator.length; | |
| 205 try { | |
| 206 int value = parseInt(tmp); | |
| 207 return value; | |
| 208 } on FormatException catch (e) { | |
| 209 throw new HttpException("Invalid HTTP date $date"); | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 void expectEnd() { | |
| 214 if (index != date.length) { | |
| 215 throw new HttpException("Invalid HTTP date $date"); | |
| 216 } | |
| 217 } | |
| 218 | |
| 219 int weekday = expectWeekday(); | |
| 220 int day; | |
| 221 int month; | |
| 222 int year; | |
| 223 int hours; | |
| 224 int minutes; | |
| 225 int seconds; | |
| 226 if (format == formatAsctime) { | |
| 227 month = expectMonth(" "); | |
| 228 if (date.charCodeAt(index) == SP) index++; | |
| 229 day = expectNum(" "); | |
| 230 hours = expectNum(":"); | |
| 231 minutes = expectNum(":"); | |
| 232 seconds = expectNum(" "); | |
| 233 year = expectNum(""); | |
| 234 } else { | |
| 235 expect(" "); | |
| 236 day = expectNum(format == formatRfc1123 ? " " : "-"); | |
| 237 month = expectMonth(format == formatRfc1123 ? " " : "-"); | |
| 238 year = expectNum(" "); | |
| 239 hours = expectNum(":"); | |
| 240 minutes = expectNum(":"); | |
| 241 seconds = expectNum(" "); | |
| 242 expect("GMT"); | |
| 243 } | |
| 244 expectEnd(); | |
| 245 return new Date.utc(year, month + 1, day, hours, minutes, seconds, 0); | |
| 246 } | |
| 247 | |
| 248 static Date parseCookieDate(String date) { | |
| 249 const List monthsLowerCase = const ["jan", "feb", "mar", "apr", "may", | |
| 250 "jun", "jul", "aug", "sep", "oct", | |
| 251 "nov", "dec"]; | |
| 252 | |
| 253 int position = 0; | |
| 254 | |
| 255 void error() { | |
| 256 throw new HttpException("Invalid cookie date $date"); | |
| 257 } | |
| 258 | |
| 259 bool isEnd() { | |
| 260 return position == date.length; | |
| 261 } | |
| 262 | |
| 263 bool isDelimiter(String s) { | |
| 264 int char = s.charCodeAt(0); | |
| 265 if (char === 0x09) return true; | |
| 266 if (char >= 0x20 && char <= 0x2F) return true; | |
| 267 if (char >= 0x3B && char <= 0x40) return true; | |
| 268 if (char >= 0x5B && char <= 0x60) return true; | |
| 269 if (char >= 0x7B && char <= 0x7E) return true; | |
| 270 return false; | |
| 271 } | |
| 272 | |
| 273 bool isNonDelimiter(String s) { | |
| 274 int char = s.charCodeAt(0); | |
| 275 if (char >= 0x00 && char <= 0x08) return true; | |
| 276 if (char >= 0x0A && char <= 0x1F) return true; | |
| 277 if (char >= 0x30 && char <= 0x39) return true; // Digit | |
| 278 if (char == 0x3A) return true; // ':' | |
| 279 if (char >= 0x41 && char <= 0x5A) return true; // Alpha | |
| 280 if (char >= 0x61 && char <= 0x7A) return true; // Alpha | |
| 281 if (char >= 0x7F && char <= 0xFF) return true; // Alpha | |
| 282 return false; | |
| 283 } | |
| 284 | |
| 285 bool isDigit(String s) { | |
| 286 int char = s.charCodeAt(0); | |
| 287 if (char > 0x2F && char < 0x3A) return true; | |
| 288 return false; | |
| 289 } | |
| 290 | |
| 291 int getMonth(String month) { | |
| 292 if (month.length < 3) return -1; | |
| 293 return monthsLowerCase.indexOf(month.substring(0, 3)); | |
| 294 } | |
| 295 | |
| 296 int toInt(String s) { | |
| 297 int index = 0; | |
| 298 for (; index < s.length && isDigit(s[index]); index++); | |
| 299 return parseInt(s.substring(0, index)); | |
| 300 } | |
| 301 | |
| 302 var tokens = []; | |
| 303 while (!isEnd()) { | |
| 304 while (!isEnd() && isDelimiter(date[position])) position++; | |
| 305 int start = position; | |
| 306 while (!isEnd() && isNonDelimiter(date[position])) position++; | |
| 307 tokens.add(date.substring(start, position).toLowerCase()); | |
| 308 while (!isEnd() && isDelimiter(date[position])) position++; | |
| 309 } | |
| 310 | |
| 311 String timeStr; | |
| 312 String dayOfMonthStr; | |
| 313 String monthStr; | |
| 314 String yearStr; | |
| 315 | |
| 316 for (var token in tokens) { | |
| 317 if (token.length < 1) continue; | |
| 318 if (timeStr === null && token.length >= 5 && isDigit(token[0]) && | |
| 319 (token[1] == ":" || (isDigit(token[1]) && token[2] == ":"))) { | |
| 320 timeStr = token; | |
| 321 } else if (dayOfMonthStr === null && isDigit(token[0])) { | |
| 322 dayOfMonthStr = token; | |
| 323 } else if (monthStr === null && getMonth(token) >= 0) { | |
| 324 monthStr = token; | |
| 325 } else if (yearStr === null && token.length >= 2 && | |
| 326 isDigit(token[0]) && isDigit(token[1])) { | |
| 327 yearStr = token; | |
| 328 } | |
| 329 } | |
| 330 | |
| 331 if (timeStr === null || dayOfMonthStr === null || | |
| 332 monthStr === null || yearStr === null) { | |
| 333 error(); | |
| 334 } | |
| 335 | |
| 336 int year = toInt(yearStr); | |
| 337 if (year >= 70 && year <= 99) year += 1900; | |
| 338 else if (year >= 0 && year <= 69) year += 2000; | |
| 339 if (year < 1601) error(); | |
| 340 | |
| 341 int dayOfMonth = toInt(dayOfMonthStr); | |
| 342 if (dayOfMonth < 1 || dayOfMonth > 31) error(); | |
| 343 | |
| 344 int month = getMonth(monthStr) + 1; | |
| 345 | |
| 346 var timeList = timeStr.split(":"); | |
| 347 if (timeList.length !== 3) error(); | |
| 348 int hour = toInt(timeList[0]); | |
| 349 int minute = toInt(timeList[1]); | |
| 350 int second = toInt(timeList[2]); | |
| 351 if (hour > 23) error(); | |
| 352 if (minute > 59) error(); | |
| 353 if (second > 59) error(); | |
| 354 | |
| 355 return new Date.utc(year, month, dayOfMonth, hour, minute, second, 0); | |
| 356 } | |
| 357 } | |
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Chromium Code Reviews
Issue 11337019:
Use patching for dart:io. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart