Remove Chrome Frame code and resources.

chrome_frame/html_utils.cc

Index: chrome_frame/html_utils.cc
diff --git a/chrome_frame/html_utils.cc b/chrome_frame/html_utils.cc
deleted file mode 100644
index 6a6bbea0784e1de84419829f6d3aaa674c190550..0000000000000000000000000000000000000000
--- a/chrome_frame/html_utils.cc
+++ /dev/null
@@ -1,475 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-//
-#include "chrome_frame/html_utils.h"
-
-#include <atlbase.h>
-#include <urlmon.h>
-
-#include "base/strings/string_tokenizer.h"
-#include "base/strings/string_util.h"
-#include "base/strings/stringprintf.h"
-#include "chrome/common/chrome_version_info.h"
-#include "chrome_frame/utils.h"
-#include "net/base/net_util.h"
-#include "webkit/common/user_agent/user_agent_util.h"
-
-const wchar_t kQuotes[] = L"\"'";
-const char kXFrameOptionsHeader[] = "X-Frame-Options";
-const char kXFrameOptionsValueAllowAll[] = "allowall";
-
-HTMLScanner::StringRange::StringRange() {
-}
-
-HTMLScanner::StringRange::StringRange(StrPos start, StrPos end)
-    : start_(start), end_(end) {
-}
-
-bool HTMLScanner::StringRange::LowerCaseEqualsASCII(const char* other) const {
-  return ::LowerCaseEqualsASCII(start_, end_, other);
-}
-
-bool HTMLScanner::StringRange::Equals(const wchar_t* other) const {
-  int ret = wcsncmp(&start_[0], other, end_ - start_);
-  if (ret == 0)
-    ret = (other[end_ - start_] == L'\0') ? 0 : -1;
-  return ret == 0;
-}
-
-std::wstring HTMLScanner::StringRange::Copy() const {
-  return std::wstring(start_, end_);
-}
-
-bool HTMLScanner::StringRange::GetTagName(std::wstring* tag_name) const {
-  if (*start_ != L'<') {
-    LOG(ERROR) << "Badly formatted tag found";
-    return false;
-  }
-
-  StrPos name_start = start_;
-  name_start++;
-  while (name_start < end_ && IsWhitespace(*name_start))
-    name_start++;
-
-  if (name_start >= end_) {
-    // We seem to have a degenerate tag (i.e. <   >). Return false here.
-    return false;
-  }
-
-  StrPos name_end = name_start + 1;
-  while (name_end < end_ && !IsWhitespace(*name_end))
-    name_end++;
-
-  if (name_end > end_) {
-    // This looks like an improperly formatted tab ('<foo'). Return false here.
-    return false;
-  }
-
-  tag_name->assign(name_start, name_end);
-  return true;
-}
-
-
-bool HTMLScanner::StringRange::GetTagAttribute(const wchar_t* attribute_name,
-    StringRange* attribute_value) const {
-  if (NULL == attribute_name || NULL == attribute_value) {
-    NOTREACHED();
-    return false;
-  }
-
-  // Use this so we can use the convenience method LowerCaseEqualsASCII()
-  // from string_util.h.
-  std::string search_name_ascii(WideToASCII(attribute_name));
-
-  base::WStringTokenizer tokenizer(start_, end_, L" =/");
-  tokenizer.set_options(base::WStringTokenizer::RETURN_DELIMS);
-
-  // Set up the quote chars so that we get quoted attribute values as single
-  // tokens.
-  tokenizer.set_quote_chars(L"\"'");
-
-  const bool PARSE_STATE_NAME = true;
-  const bool PARSE_STATE_VALUE = false;
-  bool parse_state = PARSE_STATE_NAME;
-
-  // Used to skip the first token, which is the tag name.
-  bool first_token_skipped = false;
-
-  // This is set during a loop iteration in which an '=' sign was spotted.
-  // It is used to filter out degenerate tags such as:
-  // <meta foo==bar>
-  bool last_token_was_delim = false;
-
-  // Set this if the attribute name has been found that we might then
-  // pick up the value in the next loop iteration.
-  bool attribute_name_found = false;
-
-  while (tokenizer.GetNext()) {
-    // If we have a whitespace delimiter, just keep going. Cases of this should
-    // be reduced by the CollapseWhitespace call. If we have an '=' character,
-    // we update our state and reiterate.
-    if (tokenizer.token_is_delim()) {
-      if (*tokenizer.token_begin() == L'=') {
-        if (last_token_was_delim) {
-          // Looks like we have a badly formed tag, just stop parsing now.
-          return false;
-        }
-        parse_state = !parse_state;
-        last_token_was_delim = true;
-      }
-      continue;
-    }
-
-    last_token_was_delim = false;
-
-    // The first non-delimiter token is the tag name, which we don't want.
-    if (!first_token_skipped) {
-      first_token_skipped = true;
-      continue;
-    }
-
-    if (PARSE_STATE_NAME == parse_state) {
-      // We have a tag name, check to see if it matches our target name:
-      if (::LowerCaseEqualsASCII(tokenizer.token_begin(), tokenizer.token_end(),
-                                 search_name_ascii.c_str())) {
-        attribute_name_found = true;
-        continue;
-      }
-    } else if (PARSE_STATE_VALUE == parse_state && attribute_name_found) {
-      attribute_value->start_ = tokenizer.token_begin();
-      attribute_value->end_ = tokenizer.token_end();
-
-      // Unquote the attribute value if need be.
-      attribute_value->UnQuote();
-
-      return true;
-    } else if (PARSE_STATE_VALUE == parse_state) {
-      // If we haven't found the attribute name we want yet, ignore this token
-      // and go back to looking for our name.
-      parse_state = PARSE_STATE_NAME;
-    }
-  }
-
-  return false;
-}
-
-bool HTMLScanner::StringRange::UnQuote() {
-  if (start_ + 2 > end_) {
-    // String's too short to be quoted, bail.
-    return false;
-  }
-
-  if ((*start_ == L'\'' && *(end_ - 1) == L'\'') ||
-      (*start_ == L'"' && *(end_ - 1) == L'"')) {
-    start_ = start_ + 1;
-    end_ = end_ - 1;
-    return true;
-  }
-
-  return false;
-}
-
-HTMLScanner::HTMLScanner(const wchar_t* html_string)
-    : html_string_(CollapseWhitespace(html_string, true)),
-      quotes_(kQuotes) {
-}
-
-void HTMLScanner::GetTagsByName(const wchar_t* name, StringRangeList* tag_list,
-                                const wchar_t* stop_tag) {
-  DCHECK(NULL != name);
-  DCHECK(NULL != tag_list);
-  DCHECK(NULL != stop_tag);
-
-  StringRange remaining_html(html_string_.begin(), html_string_.end());
-
-  std::wstring search_name(name);
-  TrimWhitespace(search_name, TRIM_ALL, &search_name);
-
-  // Use this so we can use the convenience method LowerCaseEqualsASCII()
-  // from string_util.h.
-  std::string search_name_ascii(WideToASCII(search_name));
-  std::string stop_tag_ascii(WideToASCII(stop_tag));
-
-  StringRange current_tag;
-  std::wstring current_name;
-  while (NextTag(&remaining_html, &current_tag)) {
-    if (current_tag.GetTagName(&current_name)) {
-      if (LowerCaseEqualsASCII(current_name, search_name_ascii.c_str())) {
-        tag_list->push_back(current_tag);
-      } else if (LowerCaseEqualsASCII(current_name, stop_tag_ascii.c_str())) {
-        // We hit the stop tag so it's time to go home.
-        break;
-      }
-    }
-  }
-}
-
-struct ScanState {
-  bool in_quote;
-  bool in_escape;
-  wchar_t quote_char;
-  ScanState() : in_quote(false), in_escape(false) {}
-};
-
-bool HTMLScanner::IsQuote(wchar_t c) {
-  return quotes_.find(c) != std::wstring::npos;
-}
-
-bool HTMLScanner::IsHTMLCommentClose(const StringRange* html_string,
-                                     StrPos pos) {
-  if (pos < html_string->end_ && pos > html_string->start_ + 2 &&
-      *pos == L'>') {
-    return *(pos-1) == L'-' && *(pos-2) == L'-';
-  }
-  return false;
-}
-
-bool HTMLScanner::IsIEConditionalCommentClose(const StringRange* html_string,
-                                              StrPos pos) {
-  if (pos < html_string->end_ && pos > html_string->start_ + 2 &&
-      *pos == L'>') {
-    return *(pos-1) == L']';
-  }
-  return false;
-}
-
-
-bool HTMLScanner::NextTag(StringRange* html_string, StringRange* tag) {
-  DCHECK(NULL != html_string);
-  DCHECK(NULL != tag);
-
-  tag->start_ = html_string->start_;
-  while (tag->start_ < html_string->end_ && *tag->start_ != L'<') {
-    tag->start_++;
-  }
-
-  // we went past the end of the string.
-  if (tag->start_ >= html_string->end_) {
-    return false;
-  }
-
-  tag->end_ = tag->start_ + 1;
-
-  // Get the tag name to see if we are in an HTML comment. If we are, then
-  // don't consider quotes. This should work for example:
-  // <!-- foo ' --> <meta foo='bar'>
-  std::wstring tag_name;
-  StringRange start_range(tag->start_, html_string->end_);
-  start_range.GetTagName(&tag_name);
-  if (StartsWith(tag_name, L"!--[if", true)) {
-    // This looks like the beginning of an IE conditional comment, scan until
-    // we hit the end which always looks like ']>'. For now we disregard the
-    // contents of the condition, and always assume true.
-    // TODO(robertshield): Optionally support the grammar defined by
-    // http://msdn.microsoft.com/en-us/library/ms537512(VS.85).aspx#syntax.
-    while (tag->end_ < html_string->end_ &&
-           !IsIEConditionalCommentClose(html_string, tag->end_)) {
-      tag->end_++;
-    }
-  } else if (StartsWith(tag_name, L"!--", true)) {
-    // We're inside a comment tag which ends in '-->'. Keep going until we
-    // reach the end.
-    while (tag->end_ < html_string->end_ &&
-           !IsHTMLCommentClose(html_string, tag->end_)) {
-      tag->end_++;
-    }
-  } else if (StartsWith(tag_name, L"![endif", true)) {
-    // We're inside the closing tag of an IE conditional comment which ends in
-    // either '-->' of ']>'. Keep going until we reach the end.
-    while (tag->end_ < html_string->end_ &&
-           !IsIEConditionalCommentClose(html_string, tag->end_) &&
-           !IsHTMLCommentClose(html_string, tag->end_)) {
-      tag->end_++;
-    }
-  } else {
-    // Properly handle quoted strings within non-comment tags by maintaining
-    // some state while scanning. Specifically, we have to maintain state on
-    // whether we are inside a string, what the string terminating character
-    // will be and whether we are inside an escape sequence.
-    ScanState state;
-    while (tag->end_ < html_string->end_) {
-      if (state.in_quote) {
-        if (state.in_escape) {
-          state.in_escape = false;
-        } else if (*tag->end_ == '\\') {
-          state.in_escape = true;
-        } else if (*tag->end_ == state.quote_char) {
-          state.in_quote = false;
-        }
-      } else {
-        state.in_quote = IsQuote(state.quote_char = *tag->end_);
-      }
-
-      if (!state.in_quote && *tag->end_ == L'>') {
-        break;
-      }
-      tag->end_++;
-    }
-  }
-
-  // We hit the end_ but found no matching tag closure. Consider this an
-  // incomplete tag and do not report it.
-  if (tag->end_ >= html_string->end_)
-    return false;
-
-  // Modify html_string to point to just beyond the end_ of the current tag.
-  html_string->start_ = tag->end_ + 1;
-
-  return true;
-}
-
-namespace http_utils {
-
-const char kChromeFrameUserAgent[] = "chromeframe";
-static char g_cf_user_agent[100] = {0};
-static char g_chrome_user_agent[255] = {0};
-
-const char* GetChromeFrameUserAgent() {
-  if (!g_cf_user_agent[0]) {
-    _pAtlModule->m_csStaticDataInitAndTypeInfo.Lock();
-    if (!g_cf_user_agent[0]) {
-      uint32 high_version = 0, low_version = 0;
-      GetModuleVersion(reinterpret_cast<HMODULE>(&__ImageBase), &high_version,
-                       &low_version);
-      wsprintfA(g_cf_user_agent, "%s/%i.%i.%i.%i", kChromeFrameUserAgent,
-                HIWORD(high_version), LOWORD(high_version),
-                HIWORD(low_version), LOWORD(low_version));
-    }
-    _pAtlModule->m_csStaticDataInitAndTypeInfo.Unlock();
-  }
-  return g_cf_user_agent;
-}
-
-std::string AddChromeFrameToUserAgentValue(const std::string& value) {
-  if (value.empty()) {
-    return value;
-  }
-
-  if (value.find(kChromeFrameUserAgent) != std::string::npos) {
-    // Our user agent has already been added.
-    return value;
-  }
-
-  std::string ret(value);
-  size_t insert_position = ret.find(')');
-  if (insert_position != std::string::npos) {
-    if (insert_position > 1 && isalnum(ret[insert_position - 1]))
-      ret.insert(insert_position++, ";");
-    ret.insert(insert_position++, " ");
-    ret.insert(insert_position, GetChromeFrameUserAgent());
-  } else {
-    ret += " ";
-    ret += GetChromeFrameUserAgent();
-  }
-
-  return ret;
-}
-
-std::string RemoveChromeFrameFromUserAgentValue(const std::string& value) {
-  size_t cf_start = value.find(kChromeFrameUserAgent);
-  if (cf_start == std::string::npos) {
-    // The user agent is not present.
-    return value;
-  }
-
-  size_t offset = 0;
-  // If we prepended a '; ' or a ' ' then remove that in the output.
-  if (cf_start > 1 && value[cf_start - 1] == ' ')
-    ++offset;
-  if (cf_start > 3 &&
-      value[cf_start - 2] == ';' &&
-      isalnum(value[cf_start - 3])) {
-    ++offset;
-  }
-
-  std::string ret(value, 0, std::max(cf_start - offset, 0U));
-  cf_start += strlen(kChromeFrameUserAgent);
-  while (cf_start < value.length() &&
-         ((value[cf_start] >= '0' && value[cf_start] <= '9') ||
-          value[cf_start] == '.' ||
-          value[cf_start] == '/')) {
-    ++cf_start;
-  }
-
-  if (cf_start < value.length())
-    ret.append(value, cf_start, std::string::npos);
-
-  return ret;
-}
-
-std::string GetDefaultUserAgentHeaderWithCFTag() {
-  std::string ua(GetDefaultUserAgent());
-  return "User-Agent: " + AddChromeFrameToUserAgentValue(ua);
-}
-
-const char* GetChromeUserAgent() {
-  if (!g_chrome_user_agent[0]) {
-    _pAtlModule->m_csStaticDataInitAndTypeInfo.Lock();
-    if (!g_chrome_user_agent[0]) {
-      std::string ua;
-
-      chrome::VersionInfo version_info;
-      std::string product("Chrome/");
-      product += version_info.is_valid() ? version_info.Version()
-                                         : "0.0.0.0";
-
-      ua = webkit_glue::BuildUserAgentFromProduct(product);
-
-      DCHECK(ua.length() < arraysize(g_chrome_user_agent));
-      lstrcpynA(g_chrome_user_agent, ua.c_str(),
-                arraysize(g_chrome_user_agent) - 1);
-    }
-    _pAtlModule->m_csStaticDataInitAndTypeInfo.Unlock();
-  }
-  return g_chrome_user_agent;
-}
-
-std::string GetDefaultUserAgent() {
-  std::string ret;
-  DWORD size = MAX_PATH;
-  HRESULT hr = E_OUTOFMEMORY;
-  for (int retries = 1; hr == E_OUTOFMEMORY && retries <= 10; ++retries) {
-    hr = ::ObtainUserAgentString(0, WriteInto(&ret, size + 1), &size);
-    if (hr == E_OUTOFMEMORY) {
-      size = MAX_PATH * retries;
-    } else if (SUCCEEDED(hr)) {
-      // Truncate the extra allocation.
-      DCHECK_GT(size, 0U);
-      ret.resize(size - 1);
-    }
-  }
-
-  if (FAILED(hr)) {
-    NOTREACHED() << base::StringPrintf("ObtainUserAgentString==0x%08X", hr);
-    return std::string();
-  }
-
-  return ret;
-}
-
-bool HasFrameBustingHeader(const std::string& http_headers) {
-  // NOTE: We cannot use net::GetSpecificHeader() here since when there are
-  // multiple instances of a header that returns the first value seen, and we
-  // need to look at all instances.
-  net::HttpUtil::HeadersIterator it(http_headers.begin(), http_headers.end(),
-                                    "\r\n");
-  while (it.GetNext()) {
-    if (!lstrcmpiA(it.name().c_str(), kXFrameOptionsHeader) &&
-        lstrcmpiA(it.values().c_str(), kXFrameOptionsValueAllowAll))
-      return true;
-  }
-  return false;
-}
-
-std::string GetHttpHeaderFromHeaderList(const std::string& header,
-                                        const std::string& headers) {
-  net::HttpUtil::HeadersIterator it(headers.begin(), headers.end(), "\r\n");
-  while (it.GetNext()) {
-    if (!lstrcmpiA(it.name().c_str(), header.c_str()))
-      return std::string(it.values_begin(), it.values_end());
-  }
-  return std::string();
-}
-
-}  // namespace http_utils