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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Portions of this code based on Mozilla: | 5 // Portions of this code based on Mozilla: |
6 // (netwerk/cookie/src/nsCookieService.cpp) | 6 // (netwerk/cookie/src/nsCookieService.cpp) |
7 /* ***** BEGIN LICENSE BLOCK ***** | 7 /* ***** BEGIN LICENSE BLOCK ***** |
8 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | 8 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 |
9 * | 9 * |
10 * The contents of this file are subject to the Mozilla Public License Version | 10 * The contents of this file are subject to the Mozilla Public License Version |
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66 // Returns true if |c| occurs in |chars| | 66 // Returns true if |c| occurs in |chars| |
67 // TODO(erikwright): maybe make this take an iterator, could check for end also? | 67 // TODO(erikwright): maybe make this take an iterator, could check for end also? |
68 inline bool CharIsA(const char c, const char* chars) { | 68 inline bool CharIsA(const char c, const char* chars) { |
69 return strchr(chars, c) != NULL; | 69 return strchr(chars, c) != NULL; |
70 } | 70 } |
71 // Seek the iterator to the first occurrence of a character in |chars|. | 71 // Seek the iterator to the first occurrence of a character in |chars|. |
72 // Returns true if it hit the end, false otherwise. | 72 // Returns true if it hit the end, false otherwise. |
73 inline bool SeekTo(std::string::const_iterator* it, | 73 inline bool SeekTo(std::string::const_iterator* it, |
74 const std::string::const_iterator& end, | 74 const std::string::const_iterator& end, |
75 const char* chars) { | 75 const char* chars) { |
76 for (; *it != end && !CharIsA(**it, chars); ++(*it)) {} | 76 for (; *it != end && !CharIsA(**it, chars); ++(*it)) { |
| 77 } |
77 return *it == end; | 78 return *it == end; |
78 } | 79 } |
79 // Seek the iterator to the first occurrence of a character not in |chars|. | 80 // Seek the iterator to the first occurrence of a character not in |chars|. |
80 // Returns true if it hit the end, false otherwise. | 81 // Returns true if it hit the end, false otherwise. |
81 inline bool SeekPast(std::string::const_iterator* it, | 82 inline bool SeekPast(std::string::const_iterator* it, |
82 const std::string::const_iterator& end, | 83 const std::string::const_iterator& end, |
83 const char* chars) { | 84 const char* chars) { |
84 for (; *it != end && CharIsA(**it, chars); ++(*it)) {} | 85 for (; *it != end && CharIsA(**it, chars); ++(*it)) { |
| 86 } |
85 return *it == end; | 87 return *it == end; |
86 } | 88 } |
87 inline bool SeekBackPast(std::string::const_iterator* it, | 89 inline bool SeekBackPast(std::string::const_iterator* it, |
88 const std::string::const_iterator& end, | 90 const std::string::const_iterator& end, |
89 const char* chars) { | 91 const char* chars) { |
90 for (; *it != end && CharIsA(**it, chars); --(*it)) {} | 92 for (; *it != end && CharIsA(**it, chars); --(*it)) { |
| 93 } |
91 return *it == end; | 94 return *it == end; |
92 } | 95 } |
93 | 96 |
94 // Validate whether |value| is a valid token according to [RFC2616], | 97 // Validate whether |value| is a valid token according to [RFC2616], |
95 // Section 2.2. | 98 // Section 2.2. |
96 bool IsValidToken(const std::string& value) { | 99 bool IsValidToken(const std::string& value) { |
97 if (value.empty()) | 100 if (value.empty()) |
98 return false; | 101 return false; |
99 | 102 |
100 // Check that |value| has no separators. | 103 // Check that |value| has no separators. |
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113 | 116 |
114 // Validate value, which may be according to RFC 6265 | 117 // Validate value, which may be according to RFC 6265 |
115 // cookie-value = *cookie-octet / ( DQUOTE *cookie-octet DQUOTE ) | 118 // cookie-value = *cookie-octet / ( DQUOTE *cookie-octet DQUOTE ) |
116 // cookie-octet = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E | 119 // cookie-octet = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E |
117 // ; US-ASCII characters excluding CTLs, | 120 // ; US-ASCII characters excluding CTLs, |
118 // ; whitespace DQUOTE, comma, semicolon, | 121 // ; whitespace DQUOTE, comma, semicolon, |
119 // ; and backslash | 122 // ; and backslash |
120 bool IsValidCookieValue(const std::string& value) { | 123 bool IsValidCookieValue(const std::string& value) { |
121 // Number of characters to skip in validation at beginning and end of string. | 124 // Number of characters to skip in validation at beginning and end of string. |
122 size_t skip = 0; | 125 size_t skip = 0; |
123 if (value.size() >= 2 && *value.begin() == '"' && *(value.end()-1) == '"') | 126 if (value.size() >= 2 && *value.begin() == '"' && *(value.end() - 1) == '"') |
124 skip = 1; | 127 skip = 1; |
125 for (std::string::const_iterator i = value.begin() + skip; | 128 for (std::string::const_iterator i = value.begin() + skip; |
126 i != value.end() - skip; ++i) { | 129 i != value.end() - skip; |
| 130 ++i) { |
127 bool valid_octet = | 131 bool valid_octet = |
128 (*i == 0x21 || | 132 (*i == 0x21 || (*i >= 0x23 && *i <= 0x2B) || |
129 (*i >= 0x23 && *i <= 0x2B) || | 133 (*i >= 0x2D && *i <= 0x3A) || (*i >= 0x3C && *i <= 0x5B) || |
130 (*i >= 0x2D && *i <= 0x3A) || | |
131 (*i >= 0x3C && *i <= 0x5B) || | |
132 (*i >= 0x5D && *i <= 0x7E)); | 134 (*i >= 0x5D && *i <= 0x7E)); |
133 if (!valid_octet) | 135 if (!valid_octet) |
134 return false; | 136 return false; |
135 } | 137 } |
136 return true; | 138 return true; |
137 } | 139 } |
138 | 140 |
139 bool IsControlCharacter(unsigned char c) { | 141 bool IsControlCharacter(unsigned char c) { |
140 return (c >= 0) && (c <= 31); | 142 return (c >= 0) && (c <= 31); |
141 } | 143 } |
142 | 144 |
143 bool IsValidCookieAttributeValue(const std::string& value) { | 145 bool IsValidCookieAttributeValue(const std::string& value) { |
144 // The greatest common denominator of cookie attribute values is | 146 // The greatest common denominator of cookie attribute values is |
145 // <any CHAR except CTLs or ";"> according to RFC 6265. | 147 // <any CHAR except CTLs or ";"> according to RFC 6265. |
146 for (std::string::const_iterator i = value.begin(); i != value.end(); ++i) { | 148 for (std::string::const_iterator i = value.begin(); i != value.end(); ++i) { |
147 if (IsControlCharacter(*i) || *i == ';') | 149 if (IsControlCharacter(*i) || *i == ';') |
148 return false; | 150 return false; |
149 } | 151 } |
150 return true; | 152 return true; |
151 } | 153 } |
152 | 154 |
153 } // namespace | 155 } // namespace |
154 | 156 |
155 namespace net { | 157 namespace net { |
156 | 158 |
157 ParsedCookie::ParsedCookie(const std::string& cookie_line) | 159 ParsedCookie::ParsedCookie(const std::string& cookie_line) |
158 : path_index_(0), | 160 : path_index_(0), |
159 domain_index_(0), | 161 domain_index_(0), |
160 expires_index_(0), | 162 expires_index_(0), |
161 maxage_index_(0), | 163 maxage_index_(0), |
162 secure_index_(0), | 164 secure_index_(0), |
163 httponly_index_(0), | 165 httponly_index_(0), |
164 priority_index_(0) { | 166 priority_index_(0) { |
165 | |
166 if (cookie_line.size() > kMaxCookieSize) { | 167 if (cookie_line.size() > kMaxCookieSize) { |
167 VLOG(1) << "Not parsing cookie, too large: " << cookie_line.size(); | 168 VLOG(1) << "Not parsing cookie, too large: " << cookie_line.size(); |
168 return; | 169 return; |
169 } | 170 } |
170 | 171 |
171 ParseTokenValuePairs(cookie_line); | 172 ParseTokenValuePairs(cookie_line); |
172 if (!pairs_.empty()) | 173 if (!pairs_.empty()) |
173 SetupAttributes(); | 174 SetupAttributes(); |
174 } | 175 } |
175 | 176 |
176 ParsedCookie::~ParsedCookie() { | 177 ParsedCookie::~ParsedCookie() { |
177 } | 178 } |
178 | 179 |
179 bool ParsedCookie::IsValid() const { | 180 bool ParsedCookie::IsValid() const { |
180 return !pairs_.empty(); | 181 return !pairs_.empty(); |
181 } | 182 } |
182 | 183 |
183 CookiePriority ParsedCookie::Priority() const { | 184 CookiePriority ParsedCookie::Priority() const { |
184 return (priority_index_ == 0) ? COOKIE_PRIORITY_DEFAULT : | 185 return (priority_index_ == 0) |
185 StringToCookiePriority(pairs_[priority_index_].second); | 186 ? COOKIE_PRIORITY_DEFAULT |
| 187 : StringToCookiePriority(pairs_[priority_index_].second); |
186 } | 188 } |
187 | 189 |
188 bool ParsedCookie::SetName(const std::string& name) { | 190 bool ParsedCookie::SetName(const std::string& name) { |
189 if (!IsValidToken(name)) | 191 if (!IsValidToken(name)) |
190 return false; | 192 return false; |
191 if (pairs_.empty()) | 193 if (pairs_.empty()) |
192 pairs_.push_back(std::make_pair("", "")); | 194 pairs_.push_back(std::make_pair("", "")); |
193 pairs_[0].first = name; | 195 pairs_[0].first = name; |
194 return true; | 196 return true; |
195 } | 197 } |
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226 bool ParsedCookie::SetIsHttpOnly(bool is_http_only) { | 228 bool ParsedCookie::SetIsHttpOnly(bool is_http_only) { |
227 return SetBool(&httponly_index_, kHttpOnlyTokenName, is_http_only); | 229 return SetBool(&httponly_index_, kHttpOnlyTokenName, is_http_only); |
228 } | 230 } |
229 | 231 |
230 bool ParsedCookie::SetPriority(const std::string& priority) { | 232 bool ParsedCookie::SetPriority(const std::string& priority) { |
231 return SetString(&priority_index_, kPriorityTokenName, priority); | 233 return SetString(&priority_index_, kPriorityTokenName, priority); |
232 } | 234 } |
233 | 235 |
234 std::string ParsedCookie::ToCookieLine() const { | 236 std::string ParsedCookie::ToCookieLine() const { |
235 std::string out; | 237 std::string out; |
236 for (PairList::const_iterator it = pairs_.begin(); | 238 for (PairList::const_iterator it = pairs_.begin(); it != pairs_.end(); ++it) { |
237 it != pairs_.end(); ++it) { | |
238 if (!out.empty()) | 239 if (!out.empty()) |
239 out.append("; "); | 240 out.append("; "); |
240 out.append(it->first); | 241 out.append(it->first); |
241 if (it->first != kSecureTokenName && it->first != kHttpOnlyTokenName) { | 242 if (it->first != kSecureTokenName && it->first != kHttpOnlyTokenName) { |
242 out.append("="); | 243 out.append("="); |
243 out.append(it->second); | 244 out.append(it->second); |
244 } | 245 } |
245 } | 246 } |
246 return out; | 247 return out; |
247 } | 248 } |
248 | 249 |
249 std::string::const_iterator ParsedCookie::FindFirstTerminator( | 250 std::string::const_iterator ParsedCookie::FindFirstTerminator( |
250 const std::string& s) { | 251 const std::string& s) { |
251 std::string::const_iterator end = s.end(); | 252 std::string::const_iterator end = s.end(); |
252 size_t term_pos = | 253 size_t term_pos = s.find_first_of(std::string(kTerminator, kTerminatorLen)); |
253 s.find_first_of(std::string(kTerminator, kTerminatorLen)); | |
254 if (term_pos != std::string::npos) { | 254 if (term_pos != std::string::npos) { |
255 // We found a character we should treat as an end of string. | 255 // We found a character we should treat as an end of string. |
256 end = s.begin() + term_pos; | 256 end = s.begin() + term_pos; |
257 } | 257 } |
258 return end; | 258 return end; |
259 } | 259 } |
260 | 260 |
261 bool ParsedCookie::ParseToken(std::string::const_iterator* it, | 261 bool ParsedCookie::ParseToken(std::string::const_iterator* it, |
262 const std::string::const_iterator& end, | 262 const std::string::const_iterator& end, |
263 std::string::const_iterator* token_start, | 263 std::string::const_iterator* token_start, |
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274 // Seek over the token, to the token separator. | 274 // Seek over the token, to the token separator. |
275 // token_real_end should point at the token separator, i.e. '='. | 275 // token_real_end should point at the token separator, i.e. '='. |
276 // If it == end after the seek, we probably have a token-value. | 276 // If it == end after the seek, we probably have a token-value. |
277 SeekTo(it, end, kTokenSeparator); | 277 SeekTo(it, end, kTokenSeparator); |
278 token_real_end = *it; | 278 token_real_end = *it; |
279 | 279 |
280 // Ignore any whitespace between the token and the token separator. | 280 // Ignore any whitespace between the token and the token separator. |
281 // token_end should point after the last interesting token character, | 281 // token_end should point after the last interesting token character, |
282 // pointing at either whitespace, or at '=' (and equal to token_real_end). | 282 // pointing at either whitespace, or at '=' (and equal to token_real_end). |
283 if (*it != *token_start) { // We could have an empty token name. | 283 if (*it != *token_start) { // We could have an empty token name. |
284 --(*it); // Go back before the token separator. | 284 --(*it); // Go back before the token separator. |
285 // Skip over any whitespace to the first non-whitespace character. | 285 // Skip over any whitespace to the first non-whitespace character. |
286 SeekBackPast(it, *token_start, kWhitespace); | 286 SeekBackPast(it, *token_start, kWhitespace); |
287 // Point after it. | 287 // Point after it. |
288 ++(*it); | 288 ++(*it); |
289 } | 289 } |
290 *token_end = *it; | 290 *token_end = *it; |
291 | 291 |
292 // Seek us back to the end of the token. | 292 // Seek us back to the end of the token. |
293 *it = token_real_end; | 293 *it = token_real_end; |
294 return true; | 294 return true; |
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436 const std::string& key, | 436 const std::string& key, |
437 const std::string& value) { | 437 const std::string& value) { |
438 if (value.empty()) { | 438 if (value.empty()) { |
439 ClearAttributePair(*index); | 439 ClearAttributePair(*index); |
440 return true; | 440 return true; |
441 } else { | 441 } else { |
442 return SetAttributePair(index, key, value); | 442 return SetAttributePair(index, key, value); |
443 } | 443 } |
444 } | 444 } |
445 | 445 |
446 bool ParsedCookie::SetBool(size_t* index, | 446 bool ParsedCookie::SetBool(size_t* index, const std::string& key, bool value) { |
447 const std::string& key, | |
448 bool value) { | |
449 if (!value) { | 447 if (!value) { |
450 ClearAttributePair(*index); | 448 ClearAttributePair(*index); |
451 return true; | 449 return true; |
452 } else { | 450 } else { |
453 return SetAttributePair(index, key, std::string()); | 451 return SetAttributePair(index, key, std::string()); |
454 } | 452 } |
455 } | 453 } |
456 | 454 |
457 bool ParsedCookie::SetAttributePair(size_t* index, | 455 bool ParsedCookie::SetAttributePair(size_t* index, |
458 const std::string& key, | 456 const std::string& key, |
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470 return true; | 468 return true; |
471 } | 469 } |
472 | 470 |
473 void ParsedCookie::ClearAttributePair(size_t index) { | 471 void ParsedCookie::ClearAttributePair(size_t index) { |
474 // The first pair (name/value of cookie at pairs_[0]) cannot be cleared. | 472 // The first pair (name/value of cookie at pairs_[0]) cannot be cleared. |
475 // Cookie attributes that don't have a value at the moment, are represented | 473 // Cookie attributes that don't have a value at the moment, are represented |
476 // with an index being equal to 0. | 474 // with an index being equal to 0. |
477 if (index == 0) | 475 if (index == 0) |
478 return; | 476 return; |
479 | 477 |
480 size_t* indexes[] = { &path_index_, &domain_index_, &expires_index_, | 478 size_t* indexes[] = {&path_index_, &domain_index_, &expires_index_, |
481 &maxage_index_, &secure_index_, &httponly_index_, | 479 &maxage_index_, &secure_index_, &httponly_index_, |
482 &priority_index_ }; | 480 &priority_index_}; |
483 for (size_t i = 0; i < arraysize(indexes); ++i) { | 481 for (size_t i = 0; i < arraysize(indexes); ++i) { |
484 if (*indexes[i] == index) | 482 if (*indexes[i] == index) |
485 *indexes[i] = 0; | 483 *indexes[i] = 0; |
486 else if (*indexes[i] > index) | 484 else if (*indexes[i] > index) |
487 --*indexes[i]; | 485 --*indexes[i]; |
488 } | 486 } |
489 pairs_.erase(pairs_.begin() + index); | 487 pairs_.erase(pairs_.begin() + index); |
490 } | 488 } |
491 | 489 |
492 } // namespace | 490 } // namespace |
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