Enforce SafetyMode for YouTube if prefs::kForceSafeSearch is on.

chrome/browser/extensions/api/web_request/web_request_api_helpers.cc

 // 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/browser/extensions/api/web_request/web_request_api_helpers.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 16 matching lines @@
 #include "net/http/http_util.h"
 #include "net/url_request/url_request.h"
 #include "url/url_constants.h"
 
 // TODO(battre): move all static functions into an anonymous namespace at the
 // top of this file.
 
 using base::Time;
 using content::ResourceType;
 using extensions::ExtensionWarning;
+using net::cookie_util::ParsedRequestCookie;
+using net::cookie_util::ParsedRequestCookies;
 
 namespace extension_web_request_api_helpers {
 
 namespace {
 
-// A ParsedRequestCookie consists of the key and value of the cookie.
-typedef std::pair<base::StringPiece, base::StringPiece> ParsedRequestCookie;
-typedef std::vector<ParsedRequestCookie> ParsedRequestCookies;
 typedef std::vector<linked_ptr<net::ParsedCookie> > ParsedResponseCookies;
 
 static const char* kResourceTypeStrings[] = {
   "main_frame",
   "sub_frame",
   "stylesheet",
   "script",
   "image",
   "object",
   "xmlhttprequest",
@@ skipping 421 matching lines @@
 }
 
 void MergeOnBeforeRequestResponses(
     const EventResponseDeltas& deltas,
     GURL* new_url,
     extensions::ExtensionWarningSet* conflicting_extensions,
     const net::BoundNetLog* net_log) {
   MergeRedirectUrlOfResponses(deltas, new_url, conflicting_extensions, net_log);
 }
 
-// Assumes that |header_value| is the cookie header value of a HTTP Request
-// following the cookie-string schema of RFC 6265, section 4.2.1, and returns
-// cookie name/value pairs. If cookie values are presented in double quotes,
-// these will appear in |parsed| as well. We can assume that the cookie header
-// is written by Chromium and therefore, well-formed.
-static void ParseRequestCookieLine(
-    const std::string& header_value,
-    ParsedRequestCookies* parsed_cookies) {
-  std::string::const_iterator i = header_value.begin();
-  while (i != header_value.end()) {
-    // Here we are at the beginning of a cookie.
-
-    // Eat whitespace.
-    while (i != header_value.end() && *i == ' ') ++i;
-    if (i == header_value.end()) return;
-
-    // Find cookie name.
-    std::string::const_iterator cookie_name_beginning = i;
-    while (i != header_value.end() && *i != '=') ++i;
-    base::StringPiece cookie_name(cookie_name_beginning, i);
-
-    // Find cookie value.
-    base::StringPiece cookie_value;
-    if (i != header_value.end()) {  // Cookies may have no value.
-      ++i;  // Skip '='.
-      std::string::const_iterator cookie_value_beginning = i;
-      if (*i == '"') {
-        ++i;  // Skip '"'.
-        while (i != header_value.end() && *i != '"') ++i;
-        if (i == header_value.end()) return;
-        ++i;  // Skip '"'.
-        cookie_value = base::StringPiece(cookie_value_beginning, i);
-        // i points to character after '"', potentially a ';'
-      } else {
-        while (i != header_value.end() && *i != ';') ++i;
-        cookie_value = base::StringPiece(cookie_value_beginning, i);
-        // i points to ';' or end of string.
-      }
-    }
-    parsed_cookies->push_back(make_pair(cookie_name, cookie_value));
-    // Eat ';'
-    if (i != header_value.end()) ++i;
-  }
-}
-
-// Writes all cookies of |parsed_cookies| into a HTTP Request header value
-// that belongs to the "Cookie" header.
-static std::string SerializeRequestCookieLine(
-    const ParsedRequestCookies& parsed_cookies) {
-  std::string buffer;
-  for (ParsedRequestCookies::const_iterator i = parsed_cookies.begin();
-       i != parsed_cookies.end(); ++i) {
-    if (!buffer.empty())
-      buffer += "; ";
-    buffer += i->first.as_string();
-    if (!i->second.empty())
-      buffer += "=" + i->second.as_string();
-  }
-  return buffer;
-}
-
 static bool DoesRequestCookieMatchFilter(
     const ParsedRequestCookie& cookie,
     RequestCookie* filter) {
   if (!filter) return true;
   if (filter->name.get() && cookie.first != *filter->name) return false;
   if (filter->value.get() && cookie.second != *filter->value) return false;
   return true;
 }
 
 // Applies all CookieModificationType::ADD operations for request cookies of
@@ skipping 117 matching lines @@
     cookie_modifications_exist |=
         !(*delta)->request_cookie_modifications.empty();
   }
   if (!cookie_modifications_exist)
     return;
 
   // Parse old cookie line.
   std::string cookie_header;
   request_headers->GetHeader(net::HttpRequestHeaders::kCookie, &cookie_header);
   ParsedRequestCookies cookies;
-  ParseRequestCookieLine(cookie_header, &cookies);
+  net::cookie_util::ParseRequestCookieLine(cookie_header, &cookies);
 
   // Modify cookies.
   bool modified = false;
   modified |= MergeAddRequestCookieModifications(deltas, &cookies);
   modified |= MergeEditRequestCookieModifications(deltas, &cookies);
   modified |= MergeRemoveRequestCookieModifications(deltas, &cookies);
 
   // Reassemble and store new cookie line.
   if (modified) {
-    std::string new_cookie_header = SerializeRequestCookieLine(cookies);
+    std::string new_cookie_header =
+        net::cookie_util::SerializeRequestCookieLine(cookies);
     request_headers->SetHeader(net::HttpRequestHeaders::kCookie,
                                new_cookie_header);
   }
 }
 
 // Returns the extension ID of the first extension in |deltas| that sets the
 // request header identified by |key| to |value|.
 static std::string FindSetRequestHeader(
     const EventResponseDeltas& deltas,
     const std::string& key,
@@ skipping 610 matching lines @@
   return net::HttpUtil::IsToken(name);
 }
 
 bool IsValidHeaderValue(const std::string& value) {
   // Just a sanity check: disallow NUL and CRLF.
   return value.find('\0') == std::string::npos &&
       value.find("\r\n") == std::string::npos;
 }
 
 }  // namespace extension_web_request_api_helpers