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| 1 /* | |
| 2 * Copyright (C) 2009, 2010 Apple Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions | |
| 6 * are met: | |
| 7 * 1. Redistributions of source code must retain the above copyright | |
| 8 * notice, this list of conditions and the following disclaimer. | |
| 9 * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer in the | |
| 11 * documentation and/or other materials provided with the distribution. | |
| 12 * | |
| 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 */ | |
| 25 | |
| 26 #include "config.h" | |
| 27 #include "platform/URLPatternMatcher.h" | |
| 28 | |
| 29 #include "platform/weborigin/KURL.h" | |
| 30 #include "wtf/StdLibExtras.h" | |
| 31 | |
| 32 namespace blink { | |
| 33 | |
| 34 bool URLPatternMatcher::matchesPatterns(const KURL& url, const Vector<String>& w
hitelist) | |
| 35 { | |
| 36 // If there is no whitelist at all, then all URLs are assumed to be in the w
hitelist. | |
| 37 if (whitelist.isEmpty()) | |
| 38 return true; | |
| 39 | |
| 40 for (size_t i = 0; i < whitelist.size(); ++i) { | |
| 41 URLPatternMatcher contentPattern(whitelist[i]); | |
| 42 if (contentPattern.matches(url)) | |
| 43 return true; | |
| 44 } | |
| 45 | |
| 46 return false; | |
| 47 } | |
| 48 | |
| 49 bool URLPatternMatcher::parse(const String& pattern) | |
| 50 { | |
| 51 DEFINE_STATIC_LOCAL(const String, schemeSeparator, ("://")); | |
| 52 | |
| 53 size_t schemeEndPos = pattern.find(schemeSeparator); | |
| 54 if (schemeEndPos == kNotFound) | |
| 55 return false; | |
| 56 | |
| 57 m_scheme = pattern.left(schemeEndPos); | |
| 58 | |
| 59 unsigned hostStartPos = schemeEndPos + schemeSeparator.length(); | |
| 60 if (hostStartPos >= pattern.length()) | |
| 61 return false; | |
| 62 | |
| 63 int pathStartPos = 0; | |
| 64 | |
| 65 if (equalIgnoringCase(m_scheme, "file")) { | |
| 66 pathStartPos = hostStartPos; | |
| 67 } else { | |
| 68 size_t hostEndPos = pattern.find("/", hostStartPos); | |
| 69 if (hostEndPos == kNotFound) | |
| 70 return false; | |
| 71 | |
| 72 m_host = pattern.substring(hostStartPos, hostEndPos - hostStartPos); | |
| 73 m_matchSubdomains = false; | |
| 74 | |
| 75 if (m_host == "*") { | |
| 76 // The pattern can be just '*', which means match all domains. | |
| 77 m_host = ""; | |
| 78 m_matchSubdomains = true; | |
| 79 } else if (m_host.startsWith("*.")) { | |
| 80 // The first component can be '*', which means to match all subdomai
ns. | |
| 81 m_host = m_host.substring(2); // Length of "*." | |
| 82 m_matchSubdomains = true; | |
| 83 } | |
| 84 | |
| 85 // No other '*' can occur in the host. | |
| 86 if (m_host.find("*") != kNotFound) | |
| 87 return false; | |
| 88 | |
| 89 pathStartPos = hostEndPos; | |
| 90 } | |
| 91 | |
| 92 m_path = pattern.right(pattern.length() - pathStartPos); | |
| 93 | |
| 94 return true; | |
| 95 } | |
| 96 | |
| 97 bool URLPatternMatcher::matches(const KURL& test) const | |
| 98 { | |
| 99 if (m_invalid) | |
| 100 return false; | |
| 101 | |
| 102 if (!equalIgnoringCase(test.protocol(), m_scheme)) | |
| 103 return false; | |
| 104 | |
| 105 if (!equalIgnoringCase(m_scheme, "file") && !matchesHost(test)) | |
| 106 return false; | |
| 107 | |
| 108 return matchesPath(test); | |
| 109 } | |
| 110 | |
| 111 bool URLPatternMatcher::matchesHost(const KURL& test) const | |
| 112 { | |
| 113 const String& host = test.host(); | |
| 114 if (equalIgnoringCase(host, m_host)) | |
| 115 return true; | |
| 116 | |
| 117 if (!m_matchSubdomains) | |
| 118 return false; | |
| 119 | |
| 120 // If we're matching subdomains, and we have no host, that means the pattern | |
| 121 // was <scheme>://*/<whatever>, so we match anything. | |
| 122 if (!m_host.length()) | |
| 123 return true; | |
| 124 | |
| 125 // Check if the domain is a subdomain of our host. | |
| 126 if (!host.endsWith(m_host, TextCaseInsensitive)) | |
| 127 return false; | |
| 128 | |
| 129 ASSERT(host.length() > m_host.length()); | |
| 130 | |
| 131 // Check that the character before the suffix is a period. | |
| 132 return host[host.length() - m_host.length() - 1] == '.'; | |
| 133 } | |
| 134 | |
| 135 struct MatchTester { | |
| 136 const String m_pattern; | |
| 137 unsigned m_patternIndex; | |
| 138 | |
| 139 const String m_test; | |
| 140 unsigned m_testIndex; | |
| 141 | |
| 142 MatchTester(const String& pattern, const String& test) | |
| 143 : m_pattern(pattern) | |
| 144 , m_patternIndex(0) | |
| 145 , m_test(test) | |
| 146 , m_testIndex(0) | |
| 147 { | |
| 148 } | |
| 149 | |
| 150 bool testStringFinished() const { return m_testIndex >= m_test.length(); } | |
| 151 bool patternStringFinished() const { return m_patternIndex >= m_pattern.leng
th(); } | |
| 152 | |
| 153 void eatWildcard() | |
| 154 { | |
| 155 while (!patternStringFinished()) { | |
| 156 if (m_pattern[m_patternIndex] != '*') | |
| 157 return; | |
| 158 m_patternIndex++; | |
| 159 } | |
| 160 } | |
| 161 | |
| 162 void eatSameChars() | |
| 163 { | |
| 164 while (!patternStringFinished() && !testStringFinished()) { | |
| 165 if (m_pattern[m_patternIndex] == '*') | |
| 166 return; | |
| 167 if (m_pattern[m_patternIndex] != m_test[m_testIndex]) | |
| 168 return; | |
| 169 m_patternIndex++; | |
| 170 m_testIndex++; | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 bool test() | |
| 175 { | |
| 176 // Eat all the matching chars. | |
| 177 eatSameChars(); | |
| 178 | |
| 179 // If the string is finished, then the pattern must be empty too, or con
tains | |
| 180 // only wildcards. | |
| 181 if (testStringFinished()) { | |
| 182 eatWildcard(); | |
| 183 if (patternStringFinished()) | |
| 184 return true; | |
| 185 return false; | |
| 186 } | |
| 187 | |
| 188 // Pattern is empty but not string, this is not a match. | |
| 189 if (patternStringFinished()) | |
| 190 return false; | |
| 191 | |
| 192 // If we don't encounter a *, then we're hosed. | |
| 193 if (m_pattern[m_patternIndex] != '*') | |
| 194 return false; | |
| 195 | |
| 196 while (!testStringFinished()) { | |
| 197 MatchTester nextMatch(*this); | |
| 198 nextMatch.m_patternIndex++; | |
| 199 if (nextMatch.test()) | |
| 200 return true; | |
| 201 m_testIndex++; | |
| 202 } | |
| 203 | |
| 204 // We reached the end of the string. Let's see if the pattern contains o
nly wildcards. | |
| 205 eatWildcard(); | |
| 206 return patternStringFinished(); | |
| 207 } | |
| 208 }; | |
| 209 | |
| 210 bool URLPatternMatcher::matchesPath(const KURL& test) const | |
| 211 { | |
| 212 MatchTester match(m_path, test.path()); | |
| 213 return match.test(); | |
| 214 } | |
| 215 | |
| 216 } // namespace blink | |
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Chromium Code Reviews
Issue 1050783003:
Remove stylesheet injection from Blink. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk