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      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
      3 // found in the LICENSE file.
      4 //
      5 // Some Google related utility functions.
      6 
      7 #ifndef CHROME_BROWSER_GOOGLE_GOOGLE_UTIL_H__
      8 #define CHROME_BROWSER_GOOGLE_GOOGLE_UTIL_H__
      9 
     10 #include <string>
     11 
     12 #include "base/basictypes.h"
     13 
     14 class GURL;
     15 class Profile;
     16 
     17 // This namespace provides various helpers around handling Google-related URLs
     18 // and state relating to Google Chrome distributions (such as RLZ).
     19 namespace google_util {
     20 
     21 // True iff |str| contains a "q=" query parameter with a non-empty value.
     22 // |str| should be a query or a hash fragment, without the ? or # (as
     23 // returned by GURL::query() or GURL::ref().
     24 bool HasGoogleSearchQueryParam(const std::string& str);
     25 
     26 // The query key that identifies a Google Extended API request for Instant.
     27 const char kInstantExtendedAPIParam[] = "espv";
     28 
     29 GURL LinkDoctorBaseURL();
     30 void SetMockLinkDoctorBaseURLForTesting();
     31 
     32 // Adds the Google locale string to the URL (e.g., hl=en-US).  This does not
     33 // check to see if the param already exists.
     34 GURL AppendGoogleLocaleParam(const GURL& url);
     35 
     36 // String version of AppendGoogleLocaleParam.
     37 std::string StringAppendGoogleLocaleParam(const std::string& url);
     38 
     39 // Adds the Google TLD string for the given profile to the URL (e.g., sd=com).
     40 // This does not check to see if the param already exists.
     41 GURL AppendGoogleTLDParam(Profile* profile, const GURL& url);
     42 
     43 // Returns in |brand| the brand code or distribution tag that has been
     44 // assigned to a partner. Returns false if the information is not available.
     45 bool GetBrand(std::string* brand);
     46 
     47 // Returns in |brand| the reactivation brand code or distribution tag
     48 // that has been assigned to a partner for reactivating a dormant chrome
     49 // install. Returns false if the information is not available.
     50 bool GetReactivationBrand(std::string* brand);
     51 
     52 // WARNING: The following IsGoogleXXX() functions use heuristics to rule out
     53 // "obviously false" answers.  They do NOT guarantee that the string in question
     54 // is actually on a Google-owned domain, just that it looks plausible.  If you
     55 // need to restrict some behavior to only happen on Google's officially-owned
     56 // domains, use TransportSecurityState::IsGooglePinnedProperty() instead.
     57 
     58 // Designate whether or not a URL checking function also checks for specific
     59 // subdomains, or only "www" and empty subdomains.
     60 enum SubdomainPermission {
     61   ALLOW_SUBDOMAIN,
     62   DISALLOW_SUBDOMAIN,
     63 };
     64 
     65 // Designate whether or not a URL checking function also checks for standard
     66 // ports (80 for http, 443 for https), or if it allows all port numbers.
     67 enum PortPermission {
     68   ALLOW_NON_STANDARD_PORTS,
     69   DISALLOW_NON_STANDARD_PORTS,
     70 };
     71 
     72 // Returns true if a Google base URL was specified on the command line and |url|
     73 // begins with that base URL.  This uses a simple string equality check.
     74 bool StartsWithCommandLineGoogleBaseURL(const GURL& url);
     75 
     76 // True if |host| is "[www.]google.<TLD>" with a valid TLD. If
     77 // |subdomain_permission| is ALLOW_SUBDOMAIN, we check against host
     78 // "*.google.<TLD>" instead.
     79 //
     80 // If the Google base URL has been overridden on the command line, this function
     81 // will also return true for any URL whose hostname exactly matches the hostname
     82 // of the URL specified on the command line.  In this case,
     83 // |subdomain_permission| is ignored.
     84 bool IsGoogleHostname(const std::string& host,
     85                       SubdomainPermission subdomain_permission);
     86 
     87 // True if |url| is a valid URL with a host that returns true for
     88 // IsGoogleHostname(), and an HTTP or HTTPS scheme.  If |port_permission| is
     89 // DISALLOW_NON_STANDARD_PORTS, this also requires |url| to use the standard
     90 // port for its scheme (80 for HTTP, 443 for HTTPS).
     91 //
     92 // Note that this only checks for google.<TLD> domains, but not other Google
     93 // properties. There is code in variations_http_header_provider.cc that checks
     94 // for additional Google properties, which can be moved here if more callers
     95 // are interested in this in the future.
     96 bool IsGoogleDomainUrl(const GURL& url,
     97                        SubdomainPermission subdomain_permission,
     98                        PortPermission port_permission);
     99 
    100 // True if |url| represents a valid Google home page URL.
    101 bool IsGoogleHomePageUrl(const GURL& url);
    102 
    103 // True if |url| represents a valid Google search URL.
    104 bool IsGoogleSearchUrl(const GURL& url);
    105 
    106 // True if a build is strictly organic, according to its brand code.
    107 bool IsOrganic(const std::string& brand);
    108 
    109 // True if a build should run as organic during first run. This uses
    110 // a slightly different set of brand codes from the standard IsOrganic
    111 // method.
    112 bool IsOrganicFirstRun(const std::string& brand);
    113 
    114 // True if |brand| is an internet cafe brand code.
    115 bool IsInternetCafeBrandCode(const std::string& brand);
    116 
    117 // This class is meant to be used only from test code, and sets the brand
    118 // code returned by the function GetBrand() above while the object exists.
    119 class BrandForTesting {
    120  public:
    121   explicit BrandForTesting(const std::string& brand);
    122   ~BrandForTesting();
    123 
    124  private:
    125   std::string brand_;
    126   DISALLOW_COPY_AND_ASSIGN(BrandForTesting);
    127 };
    128 
    129 }  // namespace google_util
    130 
    131 #endif  // CHROME_BROWSER_GOOGLE_GOOGLE_UTIL_H__
    132