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| 1 // Copyright (c) 2015 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 // Utilities for the SafeBrowsing DB code. | |
| 6 | |
| 7 #ifndef COMPONENTS_SAFE_BROWSING_DB_SAFE_BROWSING_DB_UTIL_H_ | |
| 8 #define COMPONENTS_SAFE_BROWSING_DB_SAFE_BROWSING_DB_UTIL_H_ | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 #include "base/strings/string_piece.h" | |
| 12 | |
| 13 class GURL; | |
| 14 | |
| 15 namespace safe_browsing { | |
| 16 | |
| 17 // SafeBrowsing list names. | |
| 18 extern const char kMalwareList[]; | |
| 19 extern const char kPhishingList[]; | |
| 20 // Binary Download list name. | |
| 21 extern const char kBinUrlList[]; | |
| 22 // SafeBrowsing client-side detection whitelist list name. | |
| 23 extern const char kCsdWhiteList[]; | |
| 24 // SafeBrowsing download whitelist list name. | |
| 25 extern const char kDownloadWhiteList[]; | |
| 26 // SafeBrowsing extension list name. | |
| 27 extern const char kExtensionBlacklist[]; | |
| 28 // SafeBrowsing csd malware IP blacklist name. | |
| 29 extern const char kIPBlacklist[]; | |
| 30 // SafeBrowsing unwanted URL list. | |
| 31 extern const char kUnwantedUrlList[]; | |
| 32 // SafeBrowsing off-domain inclusion whitelist list name. | |
| 33 extern const char kInclusionWhitelist[]; | |
| 34 // This array must contain all Safe Browsing lists. | |
| 35 extern const char* kAllLists[9]; | |
| 36 | |
| 37 | |
| 38 // Different types of threats that SafeBrowsing protects against. | |
| 39 enum SBThreatType { | |
| 40 // No threat at all. | |
| 41 SB_THREAT_TYPE_SAFE, | |
| 42 | |
| 43 // The URL is being used for phishing. | |
| 44 SB_THREAT_TYPE_URL_PHISHING, | |
| 45 | |
| 46 // The URL hosts malware. | |
| 47 SB_THREAT_TYPE_URL_MALWARE, | |
| 48 | |
| 49 // The URL hosts unwanted programs. | |
| 50 SB_THREAT_TYPE_URL_UNWANTED, | |
| 51 | |
| 52 // The download URL is malware. | |
| 53 SB_THREAT_TYPE_BINARY_MALWARE_URL, | |
| 54 | |
| 55 // Url detected by the client-side phishing model. Note that unlike the | |
| 56 // above values, this does not correspond to a downloaded list. | |
| 57 SB_THREAT_TYPE_CLIENT_SIDE_PHISHING_URL, | |
| 58 | |
| 59 // The Chrome extension or app (given by its ID) is malware. | |
| 60 SB_THREAT_TYPE_EXTENSION, | |
| 61 | |
| 62 // Url detected by the client-side malware IP list. This IP list is part | |
| 63 // of the client side detection model. | |
| 64 SB_THREAT_TYPE_CLIENT_SIDE_MALWARE_URL, | |
| 65 }; | |
| 66 | |
| 67 enum ListType { | |
| 68 INVALID = -1, | |
| 69 MALWARE = 0, | |
| 70 PHISH = 1, | |
| 71 BINURL = 2, | |
| 72 // Obsolete BINHASH = 3, | |
| 73 CSDWHITELIST = 4, | |
| 74 // SafeBrowsing lists are stored in pairs. Keep ListType 5 | |
| 75 // available for a potential second list that we would store in the | |
| 76 // csd-whitelist store file. | |
| 77 DOWNLOADWHITELIST = 6, | |
| 78 // See above comment. Leave 7 available. | |
| 79 EXTENSIONBLACKLIST = 8, | |
| 80 // See above comment. Leave 9 available. | |
| 81 // Obsolete SIDEEFFECTFREEWHITELIST = 10, | |
| 82 // See above comment. Leave 11 available. | |
| 83 IPBLACKLIST = 12, | |
| 84 // See above comment. Leave 13 available. | |
| 85 UNWANTEDURL = 14, | |
| 86 // See above comment. Leave 15 available. | |
| 87 INCLUSIONWHITELIST = 16, | |
| 88 // See above comment. Leave 17 available. | |
| 89 }; | |
| 90 | |
| 91 // Maps a list name to ListType. | |
| 92 ListType GetListId(const base::StringPiece& name); | |
| 93 | |
| 94 // Maps a ListId to list name. Return false if fails. | |
| 95 bool GetListName(ListType list_id, std::string* list); | |
| 96 | |
| 97 | |
| 98 // A full hash. | |
| 99 union SBFullHash { | |
| 100 char full_hash[32]; | |
| 101 SBPrefix prefix; | |
| 102 }; | |
| 103 | |
| 104 // Used when we get a gethash response. | |
| 105 struct SBFullHashResult { | |
| 106 SBFullHash hash; | |
| 107 ListType list_id; | |
| 108 std::string metadata; | |
| 109 }; | |
| 110 | |
| 111 // Caches individual response from GETHASH request. | |
| 112 struct SBCachedFullHashResult { | |
| 113 SBCachedFullHashResult(); | |
| 114 explicit SBCachedFullHashResult(const base::Time& in_expire_after); | |
| 115 ~SBCachedFullHashResult(); | |
| 116 | |
| 117 base::Time expire_after; | |
| 118 std::vector<SBFullHashResult> full_hashes; | |
| 119 }; | |
| 120 | |
| 121 inline bool SBFullHashEqual(const SBFullHash& a, const SBFullHash& b) { | |
| 122 return !memcmp(a.full_hash, b.full_hash, sizeof(a.full_hash)); | |
| 123 } | |
| 124 | |
| 125 inline bool SBFullHashLess(const SBFullHash& a, const SBFullHash& b) { | |
| 126 return memcmp(a.full_hash, b.full_hash, sizeof(a.full_hash)) < 0; | |
| 127 } | |
| 128 | |
| 129 // Generate full hash for the given string. | |
| 130 SBFullHash SBFullHashForString(const base::StringPiece& str); | |
| 131 SBFullHash StringToSBFullHash(const std::string& hash_in); | |
| 132 std::string SBFullHashToString(const SBFullHash& hash_out); | |
| 133 | |
| 134 // Canonicalizes url as per Google Safe Browsing Specification. | |
| 135 // See section 6.1 in | |
| 136 // http://code.google.com/p/google-safe-browsing/wiki/Protocolv2Spec. | |
| 137 void CanonicalizeUrl(const GURL& url, std::string* canonicalized_hostname, | |
| 138 std::string* canonicalized_path, | |
| 139 std::string* canonicalized_query); | |
| 140 | |
| 141 // Given a URL, returns all the hosts we need to check. They are returned | |
| 142 // in order of size (i.e. b.c is first, then a.b.c). | |
| 143 void GenerateHostsToCheck(const GURL& url, std::vector<std::string>* hosts); | |
| 144 | |
| 145 // Given a URL, returns all the paths we need to check. | |
| 146 void GeneratePathsToCheck(const GURL& url, std::vector<std::string>* paths); | |
| 147 | |
| 148 // Given a URL, returns all the patterns we need to check. | |
| 149 void GeneratePatternsToCheck(const GURL& url, std::vector<std::string>* urls); | |
| 150 | |
| 151 } // namespace safe_browsing | |
| 152 | |
| 153 #endif // COMPONENTS_SAFE_BROWSING_DB_SAFE_BROWSING_DB_UTIL_H_ | |
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