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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 #ifndef NET_HTTP_HTTP_UTIL_H_ | 5 #ifndef NET_HTTP_HTTP_UTIL_H_ |
6 #define NET_HTTP_HTTP_UTIL_H_ | 6 #define NET_HTTP_HTTP_UTIL_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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22 | 22 |
23 namespace net { | 23 namespace net { |
24 | 24 |
25 class NET_EXPORT HttpUtil { | 25 class NET_EXPORT HttpUtil { |
26 public: | 26 public: |
27 // Returns the absolute URL, to be used for the http request. This url is | 27 // Returns the absolute URL, to be used for the http request. This url is |
28 // made up of the protocol, host, [port], path, [query]. Everything else | 28 // made up of the protocol, host, [port], path, [query]. Everything else |
29 // is stripped (username, password, reference). | 29 // is stripped (username, password, reference). |
30 static std::string SpecForRequest(const GURL& url); | 30 static std::string SpecForRequest(const GURL& url); |
31 | 31 |
32 // Locates the next occurance of delimiter in line, skipping over quoted | |
33 // strings (e.g., commas will not be treated as delimiters if they appear | |
34 // within a quoted string). Returns the offset of the found delimiter or | |
35 // line.size() if no delimiter was found. | |
36 static size_t FindDelimiter(const std::string& line, | |
37 size_t search_start, | |
38 char delimiter); | |
39 | |
40 // Parses the value of a Content-Type header. The resulting mime_type and | 32 // Parses the value of a Content-Type header. The resulting mime_type and |
41 // charset values are normalized to lowercase. The mime_type and charset | 33 // charset values are normalized to lowercase. The mime_type and charset |
42 // output values are only modified if the content_type_str contains a mime | 34 // output values are only modified if the content_type_str contains a mime |
43 // type and charset value, respectively. The boundary output value is | 35 // type and charset value, respectively. The boundary output value is |
44 // optional and will be assigned the (quoted) value of the boundary | 36 // optional and will be assigned the (quoted) value of the boundary |
45 // paramter, if any. | 37 // paramter, if any. |
46 static void ParseContentType(const std::string& content_type_str, | 38 static void ParseContentType(const std::string& content_type_str, |
47 std::string* mime_type, | 39 std::string* mime_type, |
48 std::string* charset, | 40 std::string* charset, |
49 bool* had_charset, | 41 bool* had_charset, |
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316 | 308 |
317 // Iterates over a delimited sequence of name-value pairs in an HTTP header. | 309 // Iterates over a delimited sequence of name-value pairs in an HTTP header. |
318 // Each pair consists of a token (the name), an equals sign, and either a | 310 // Each pair consists of a token (the name), an equals sign, and either a |
319 // token or quoted-string (the value). Arbitrary HTTP LWS is permitted outside | 311 // token or quoted-string (the value). Arbitrary HTTP LWS is permitted outside |
320 // of and between names, values, and delimiters. | 312 // of and between names, values, and delimiters. |
321 // | 313 // |
322 // String iterators returned from this class' methods may be invalidated upon | 314 // String iterators returned from this class' methods may be invalidated upon |
323 // calls to GetNext() or after the NameValuePairsIterator is destroyed. | 315 // calls to GetNext() or after the NameValuePairsIterator is destroyed. |
324 class NET_EXPORT NameValuePairsIterator { | 316 class NET_EXPORT NameValuePairsIterator { |
325 public: | 317 public: |
318 // Whether or not values are optional. VALUES_OPTIONAL allows | |
319 // e.g. name1=value1;name2;name3=value3, whereas VALUES_NOT_OPTIONAL | |
320 // will treat it as a parse error because name2 does not have a | |
321 // corresponding equals sign. Default is VALUES_NOT_OPTIONAL. | |
Ryan Sleevi
2015/07/16 02:25:44
This last sentence arguably belongs to the NameVal
estark
2015/07/16 04:52:18
Done.
| |
322 enum OptionalValues { VALUES_OPTIONAL, VALUES_NOT_OPTIONAL }; | |
323 | |
324 NameValuePairsIterator(std::string::const_iterator begin, | |
325 std::string::const_iterator end, | |
326 char delimiter, | |
327 OptionalValues optional_values); | |
326 NameValuePairsIterator(std::string::const_iterator begin, | 328 NameValuePairsIterator(std::string::const_iterator begin, |
327 std::string::const_iterator end, | 329 std::string::const_iterator end, |
328 char delimiter); | 330 char delimiter); |
329 ~NameValuePairsIterator(); | 331 ~NameValuePairsIterator(); |
330 | 332 |
331 // Advances the iterator to the next pair, if any. Returns true if there | 333 // Advances the iterator to the next pair, if any. Returns true if there |
332 // is a next pair. Use name* and value* methods to access the resultant | 334 // is a next pair. Use name* and value* methods to access the resultant |
333 // value. | 335 // value. |
334 bool GetNext(); | 336 bool GetNext(); |
335 | 337 |
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346 return value_is_quoted_ ? unquoted_value_.begin() : value_begin_; | 348 return value_is_quoted_ ? unquoted_value_.begin() : value_begin_; |
347 } | 349 } |
348 std::string::const_iterator value_end() const { | 350 std::string::const_iterator value_end() const { |
349 return value_is_quoted_ ? unquoted_value_.end() : value_end_; | 351 return value_is_quoted_ ? unquoted_value_.end() : value_end_; |
350 } | 352 } |
351 std::string value() const { | 353 std::string value() const { |
352 return value_is_quoted_ ? unquoted_value_ : std::string(value_begin_, | 354 return value_is_quoted_ ? unquoted_value_ : std::string(value_begin_, |
353 value_end_); | 355 value_end_); |
354 } | 356 } |
355 | 357 |
358 bool value_is_quoted() const { return value_is_quoted_; } | |
359 | |
356 // The value before unquoting (if any). | 360 // The value before unquoting (if any). |
357 std::string raw_value() const { return std::string(value_begin_, | 361 std::string raw_value() const { return std::string(value_begin_, |
358 value_end_); } | 362 value_end_); } |
359 | 363 |
360 private: | 364 private: |
361 HttpUtil::ValuesIterator props_; | 365 HttpUtil::ValuesIterator props_; |
362 bool valid_; | 366 bool valid_; |
363 | 367 |
364 std::string::const_iterator name_begin_; | 368 std::string::const_iterator name_begin_; |
365 std::string::const_iterator name_end_; | 369 std::string::const_iterator name_end_; |
366 | 370 |
367 std::string::const_iterator value_begin_; | 371 std::string::const_iterator value_begin_; |
368 std::string::const_iterator value_end_; | 372 std::string::const_iterator value_end_; |
369 | 373 |
370 // Do not store iterators into this string. The NameValuePairsIterator | 374 // Do not store iterators into this string. The NameValuePairsIterator |
371 // is copyable/assignable, and if copied the copy's iterators would point | 375 // is copyable/assignable, and if copied the copy's iterators would point |
372 // into the original's unquoted_value_ member. | 376 // into the original's unquoted_value_ member. |
373 std::string unquoted_value_; | 377 std::string unquoted_value_; |
374 | 378 |
375 bool value_is_quoted_; | 379 bool value_is_quoted_; |
380 | |
381 // True if values are required for each name/value pair; false if a | |
382 // name is permitted to appear without a corresponding value. | |
383 bool values_optional_; | |
376 }; | 384 }; |
377 }; | 385 }; |
378 | 386 |
379 } // namespace net | 387 } // namespace net |
380 | 388 |
381 #endif // NET_HTTP_HTTP_UTIL_H_ | 389 #endif // NET_HTTP_HTTP_UTIL_H_ |
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