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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 #include "net/http/http_content_disposition.h" | 5 #include "net/http/http_content_disposition.h" |
6 | 6 |
7 #include "base/base64.h" | 7 #include "base/base64.h" |
8 #include "base/logging.h" | 8 #include "base/logging.h" |
9 #include "base/strings/string_tokenizer.h" | 9 #include "base/strings/string_tokenizer.h" |
10 #include "base/strings/string_util.h" | 10 #include "base/strings/string_util.h" |
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27 // decoding a quoted-printable string. Returns true if the input was valid. | 27 // decoding a quoted-printable string. Returns true if the input was valid. |
28 bool DecodeQEncoding(const std::string& input, std::string* output) { | 28 bool DecodeQEncoding(const std::string& input, std::string* output) { |
29 std::string temp; | 29 std::string temp; |
30 temp.reserve(input.size()); | 30 temp.reserve(input.size()); |
31 for (std::string::const_iterator it = input.begin(); it != input.end(); | 31 for (std::string::const_iterator it = input.begin(); it != input.end(); |
32 ++it) { | 32 ++it) { |
33 if (*it == '_') { | 33 if (*it == '_') { |
34 temp.push_back(' '); | 34 temp.push_back(' '); |
35 } else if (*it == '=') { | 35 } else if (*it == '=') { |
36 if ((input.end() - it < 3) || | 36 if ((input.end() - it < 3) || |
37 !IsHexDigit(static_cast<unsigned char>(*(it + 1))) || | 37 !base::IsHexDigit(static_cast<unsigned char>(*(it + 1))) || |
38 !IsHexDigit(static_cast<unsigned char>(*(it + 2)))) | 38 !base::IsHexDigit(static_cast<unsigned char>(*(it + 2)))) |
39 return false; | 39 return false; |
40 unsigned char ch = HexDigitToInt(*(it + 1)) * 16 + | 40 unsigned char ch = |
41 HexDigitToInt(*(it + 2)); | 41 base::HexDigitToInt(*(it + 1)) * 16 + base::HexDigitToInt(*(it + 2)); |
42 temp.push_back(static_cast<char>(ch)); | 42 temp.push_back(static_cast<char>(ch)); |
43 ++it; | 43 ++it; |
44 ++it; | 44 ++it; |
45 } else if (0x20 < *it && *it < 0x7F && *it != '?') { | 45 } else if (0x20 < *it && *it < 0x7F && *it != '?') { |
46 // In a Q-encoded word, only printable ASCII characters | 46 // In a Q-encoded word, only printable ASCII characters |
47 // represent themselves. Besides, space, '=', '_' and '?' are | 47 // represent themselves. Besides, space, '=', '_' and '?' are |
48 // not allowed, but they're already filtered out. | 48 // not allowed, but they're already filtered out. |
49 DCHECK_NE('=', *it); | 49 DCHECK_NE('=', *it); |
50 DCHECK_NE('?', *it); | 50 DCHECK_NE('?', *it); |
51 DCHECK_NE('_', *it); | 51 DCHECK_NE('_', *it); |
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352 // If the disposition-type isn't a valid token the then the | 352 // If the disposition-type isn't a valid token the then the |
353 // Content-Disposition header is malformed, and we treat the first bytes as | 353 // Content-Disposition header is malformed, and we treat the first bytes as |
354 // a parameter rather than a disposition-type. | 354 // a parameter rather than a disposition-type. |
355 if (!HttpUtil::IsToken(type_begin, type_end)) | 355 if (!HttpUtil::IsToken(type_begin, type_end)) |
356 return begin; | 356 return begin; |
357 | 357 |
358 parse_result_flags_ |= HAS_DISPOSITION_TYPE; | 358 parse_result_flags_ |= HAS_DISPOSITION_TYPE; |
359 | 359 |
360 DCHECK(std::find(type_begin, type_end, '=') == type_end); | 360 DCHECK(std::find(type_begin, type_end, '=') == type_end); |
361 | 361 |
362 if (LowerCaseEqualsASCII(type_begin, type_end, "inline")) { | 362 if (base::LowerCaseEqualsASCII(type_begin, type_end, "inline")) { |
363 type_ = INLINE; | 363 type_ = INLINE; |
364 } else if (LowerCaseEqualsASCII(type_begin, type_end, "attachment")) { | 364 } else if (base::LowerCaseEqualsASCII(type_begin, type_end, "attachment")) { |
365 type_ = ATTACHMENT; | 365 type_ = ATTACHMENT; |
366 } else { | 366 } else { |
367 parse_result_flags_ |= HAS_UNKNOWN_DISPOSITION_TYPE; | 367 parse_result_flags_ |= HAS_UNKNOWN_DISPOSITION_TYPE; |
368 type_ = ATTACHMENT; | 368 type_ = ATTACHMENT; |
369 } | 369 } |
370 return delimiter; | 370 return delimiter; |
371 } | 371 } |
372 | 372 |
373 // http://tools.ietf.org/html/rfc6266 | 373 // http://tools.ietf.org/html/rfc6266 |
374 // | 374 // |
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395 | 395 |
396 std::string::const_iterator pos = header.begin(); | 396 std::string::const_iterator pos = header.begin(); |
397 std::string::const_iterator end = header.end(); | 397 std::string::const_iterator end = header.end(); |
398 pos = ConsumeDispositionType(pos, end); | 398 pos = ConsumeDispositionType(pos, end); |
399 | 399 |
400 std::string filename; | 400 std::string filename; |
401 std::string ext_filename; | 401 std::string ext_filename; |
402 | 402 |
403 HttpUtil::NameValuePairsIterator iter(pos, end, ';'); | 403 HttpUtil::NameValuePairsIterator iter(pos, end, ';'); |
404 while (iter.GetNext()) { | 404 while (iter.GetNext()) { |
405 if (filename.empty() && LowerCaseEqualsASCII(iter.name_begin(), | 405 if (filename.empty() && |
406 iter.name_end(), | 406 base::LowerCaseEqualsASCII(iter.name_begin(), iter.name_end(), |
407 "filename")) { | 407 "filename")) { |
408 DecodeFilenameValue(iter.value(), referrer_charset, &filename, | 408 DecodeFilenameValue(iter.value(), referrer_charset, &filename, |
409 &parse_result_flags_); | 409 &parse_result_flags_); |
410 if (!filename.empty()) | 410 if (!filename.empty()) |
411 parse_result_flags_ |= HAS_FILENAME; | 411 parse_result_flags_ |= HAS_FILENAME; |
412 } else if (ext_filename.empty() && LowerCaseEqualsASCII(iter.name_begin(), | 412 } else if (ext_filename.empty() && |
413 iter.name_end(), | 413 base::LowerCaseEqualsASCII(iter.name_begin(), iter.name_end(), |
414 "filename*")) { | 414 "filename*")) { |
415 DecodeExtValue(iter.raw_value(), &ext_filename); | 415 DecodeExtValue(iter.raw_value(), &ext_filename); |
416 if (!ext_filename.empty()) | 416 if (!ext_filename.empty()) |
417 parse_result_flags_ |= HAS_EXT_FILENAME; | 417 parse_result_flags_ |= HAS_EXT_FILENAME; |
418 } | 418 } |
419 } | 419 } |
420 | 420 |
421 if (!ext_filename.empty()) | 421 if (!ext_filename.empty()) |
422 filename_ = ext_filename; | 422 filename_ = ext_filename; |
423 else | 423 else |
424 filename_ = filename; | 424 filename_ = filename; |
425 } | 425 } |
426 | 426 |
427 } // namespace net | 427 } // namespace net |
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