The Tor Browser: toolkit/components/places/SQLFunctions.cpp@129ffea94266 (annotated)

toolkit/components/places/SQLFunctions.cpp@129ffea94266 (annotated)

toolkit/components/places/SQLFunctions.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
  * This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "mozilla/storage.h"
 #include "nsString.h"
 #include "nsUnicharUtils.h"
 #include "nsWhitespaceTokenizer.h"
 #include "nsEscape.h"
 #include "mozIPlacesAutoComplete.h"
 #include "SQLFunctions.h"
 #include "nsMathUtils.h"
 #include "nsUTF8Utils.h"
 #include "nsINavHistoryService.h"
 #include "nsPrintfCString.h"
 #include "nsNavHistory.h"
 #include "mozilla/Telemetry.h"
 #include "mozilla/Likely.h"
 using namespace mozilla::storage;
 // Keep the GUID-related parts of this file in sync with toolkit/downloads/SQLFunctions.cpp!
 ////////////////////////////////////////////////////////////////////////////////
 //// Anonymous Helpers
 namespace {
   typedef nsACString::const_char_iterator const_char_iterator;
   /**
    * Get a pointer to the word boundary after aStart if aStart points to an
    * ASCII letter (i.e. [a-zA-Z]).  Otherwise, return aNext, which we assume
    * points to the next character in the UTF-8 sequence.
    *
    * We define a word boundary as anything that's not [a-z] -- this lets us
    * match CamelCase words.
    *
    * @param aStart the beginning of the UTF-8 sequence
    * @param aNext the next character in the sequence
    * @param aEnd the first byte which is not part of the sequence
    *
    * @return a pointer to the next word boundary after aStart
    */
   static
   MOZ_ALWAYS_INLINE const_char_iterator
   nextWordBoundary(const_char_iterator const aStart,
                    const_char_iterator const aNext,
                    const_char_iterator const aEnd) {
     const_char_iterator cur = aStart;
     if (('a' <= *cur && *cur <= 'z') ||
         ('A' <= *cur && *cur <= 'Z')) {
       // Since we'll halt as soon as we see a non-ASCII letter, we can do a
       // simple byte-by-byte comparison here and avoid the overhead of a
       // UTF8CharEnumerator.
       do {
         cur++;
       } while (cur < aEnd && 'a' <= *cur && *cur <= 'z');
     }
     else {
       cur = aNext;
     }
     return cur;
   }
   enum FindInStringBehavior {
     eFindOnBoundary,
     eFindAnywhere
   };
   /**
    * findAnywhere and findOnBoundary do almost the same thing, so it's natural
    * to implement them in terms of a single function.  They're both
    * performance-critical functions, however, and checking aBehavior makes them
    * a bit slower.  Our solution is to define findInString as MOZ_ALWAYS_INLINE
    * and rely on the compiler to optimize out the aBehavior check.
    *
    * @param aToken
    *        The token we're searching for
    * @param aSourceString
    *        The string in which we're searching
    * @param aBehavior
    *        eFindOnBoundary if we should only consider matchines which occur on
    *        word boundaries, or eFindAnywhere if we should consider matches
    *        which appear anywhere.
    *
    * @return true if aToken was found in aSourceString, false otherwise.
    */
   static
   MOZ_ALWAYS_INLINE bool
   findInString(const nsDependentCSubstring &aToken,
                const nsACString &aSourceString,
                FindInStringBehavior aBehavior)
   {
     // CaseInsensitiveUTF8CharsEqual assumes that there's at least one byte in
     // the both strings, so don't pass an empty token here.
     NS_PRECONDITION(!aToken.IsEmpty(), "Don't search for an empty token!");
     // We cannot match anything if there is nothing to search.
     if (aSourceString.IsEmpty()) {
       return false;
     }
     const_char_iterator tokenStart(aToken.BeginReading()),
                         tokenEnd(aToken.EndReading()),
                         sourceStart(aSourceString.BeginReading()),
                         sourceEnd(aSourceString.EndReading());
     do {
       // We are on a word boundary (if aBehavior == eFindOnBoundary).  See if
       // aToken matches sourceStart.
       // Check whether the first character in the token matches the character
       // at sourceStart.  At the same time, get a pointer to the next character
       // in both the token and the source.
       const_char_iterator sourceNext, tokenCur;
       bool error;
       if (CaseInsensitiveUTF8CharsEqual(sourceStart, tokenStart,
                                         sourceEnd, tokenEnd,
                                         &sourceNext, &tokenCur, &error)) {
         // We don't need to check |error| here -- if
         // CaseInsensitiveUTF8CharCompare encounters an error, it'll also
         // return false and we'll catch the error outside the if.
         const_char_iterator sourceCur = sourceNext;
         while (true) {
           if (tokenCur >= tokenEnd) {
             // We matched the whole token!
             return true;
           }
           if (sourceCur >= sourceEnd) {
             // We ran into the end of source while matching a token.  This
             // means we'll never find the token we're looking for.
             return false;
           }
           if (!CaseInsensitiveUTF8CharsEqual(sourceCur, tokenCur,
                                              sourceEnd, tokenEnd,
                                              &sourceCur, &tokenCur, &error)) {
             // sourceCur doesn't match tokenCur (or there's an error), so break
             // out of this loop.
             break;
           }
         }
       }
       // If something went wrong above, get out of here!
       if (MOZ_UNLIKELY(error)) {
         return false;
       }
       // We didn't match the token.  If we're searching for matches on word
       // boundaries, skip to the next word boundary.  Otherwise, advance
       // forward one character, using the sourceNext pointer we saved earlier.
       if (aBehavior == eFindOnBoundary) {
         sourceStart = nextWordBoundary(sourceStart, sourceNext, sourceEnd);
       }
       else {
         sourceStart = sourceNext;
       }
     } while (sourceStart < sourceEnd);
     return false;
   }
 } // End anonymous namespace
 namespace mozilla {
 namespace places {
 ////////////////////////////////////////////////////////////////////////////////
 //// AutoComplete Matching Function
   //////////////////////////////////////////////////////////////////////////////
   //// MatchAutoCompleteFunction
   /* static */
   nsresult
   MatchAutoCompleteFunction::create(mozIStorageConnection *aDBConn)
   {
     nsRefPtr<MatchAutoCompleteFunction> function =
       new MatchAutoCompleteFunction();
     nsresult rv = aDBConn->CreateFunction(
       NS_LITERAL_CSTRING("autocomplete_match"), kArgIndexLength, function
     );
     NS_ENSURE_SUCCESS(rv, rv);
     return NS_OK;
   }
   /* static */
   void
   MatchAutoCompleteFunction::fixupURISpec(const nsCString &aURISpec,
                                           int32_t aMatchBehavior,
                                           nsCString &_fixedSpec)
   {
     nsCString unescapedSpec;
     (void)NS_UnescapeURL(aURISpec, esc_SkipControl | esc_AlwaysCopy,
                          unescapedSpec);
     // If this unescaped string is valid UTF-8, we'll use it.  Otherwise,
     // we will simply use our original string.
     NS_ASSERTION(_fixedSpec.IsEmpty(),
                  "Passing a non-empty string as an out parameter!");
     if (IsUTF8(unescapedSpec))
       _fixedSpec.Assign(unescapedSpec);
     else
       _fixedSpec.Assign(aURISpec);
     if (aMatchBehavior == mozIPlacesAutoComplete::MATCH_ANYWHERE_UNMODIFIED)
       return;
     if (StringBeginsWith(_fixedSpec, NS_LITERAL_CSTRING("http://")))
       _fixedSpec.Cut(0, 7);
     else if (StringBeginsWith(_fixedSpec, NS_LITERAL_CSTRING("https://")))
       _fixedSpec.Cut(0, 8);
     else if (StringBeginsWith(_fixedSpec, NS_LITERAL_CSTRING("ftp://")))
       _fixedSpec.Cut(0, 6);
     if (StringBeginsWith(_fixedSpec, NS_LITERAL_CSTRING("www.")))
       _fixedSpec.Cut(0, 4);
   }
   /* static */
   bool
   MatchAutoCompleteFunction::findAnywhere(const nsDependentCSubstring &aToken,
                                           const nsACString &aSourceString)
   {
     // We can't use FindInReadable here; it works only for ASCII.
     return findInString(aToken, aSourceString, eFindAnywhere);
   }
   /* static */
   bool
   MatchAutoCompleteFunction::findOnBoundary(const nsDependentCSubstring &aToken,
                                             const nsACString &aSourceString)
   {
     return findInString(aToken, aSourceString, eFindOnBoundary);
   }
   /* static */
   bool
   MatchAutoCompleteFunction::findBeginning(const nsDependentCSubstring &aToken,
                                            const nsACString &aSourceString)
   {
     NS_PRECONDITION(!aToken.IsEmpty(), "Don't search for an empty token!");
     // We can't use StringBeginsWith here, unfortunately.  Although it will
     // happily take a case-insensitive UTF8 comparator, it eventually calls
     // nsACString::Equals, which checks that the two strings contain the same
     // number of bytes before calling the comparator.  Two characters may be
     // case-insensitively equal while taking up different numbers of bytes, so
     // this is not what we want.
     const_char_iterator tokenStart(aToken.BeginReading()),
                         tokenEnd(aToken.EndReading()),
                         sourceStart(aSourceString.BeginReading()),
                         sourceEnd(aSourceString.EndReading());
     bool dummy;
     while (sourceStart < sourceEnd &&
            CaseInsensitiveUTF8CharsEqual(sourceStart, tokenStart,
                                          sourceEnd, tokenEnd,
                                          &sourceStart, &tokenStart, &dummy)) {
       // We found the token!
       if (tokenStart >= tokenEnd) {
         return true;
       }
     }
     // We don't need to check CaseInsensitiveUTF8CharsEqual's error condition
     // (stored in |dummy|), since the function will return false if it
     // encounters an error.
     return false;
   }
   /* static */
   bool
   MatchAutoCompleteFunction::findBeginningCaseSensitive(
     const nsDependentCSubstring &aToken,
     const nsACString &aSourceString)
   {
     NS_PRECONDITION(!aToken.IsEmpty(), "Don't search for an empty token!");
     return StringBeginsWith(aSourceString, aToken);
   }
   /* static */
   MatchAutoCompleteFunction::searchFunctionPtr
   MatchAutoCompleteFunction::getSearchFunction(int32_t aBehavior)
   {
     switch (aBehavior) {
       case mozIPlacesAutoComplete::MATCH_ANYWHERE:
       case mozIPlacesAutoComplete::MATCH_ANYWHERE_UNMODIFIED:
         return findAnywhere;
       case mozIPlacesAutoComplete::MATCH_BEGINNING:
         return findBeginning;
       case mozIPlacesAutoComplete::MATCH_BEGINNING_CASE_SENSITIVE:
         return findBeginningCaseSensitive;
       case mozIPlacesAutoComplete::MATCH_BOUNDARY:
       default:
         return findOnBoundary;
     };
   }
   NS_IMPL_ISUPPORTS(
     MatchAutoCompleteFunction,
     mozIStorageFunction
   )
   //////////////////////////////////////////////////////////////////////////////
   //// mozIStorageFunction
   NS_IMETHODIMP
   MatchAutoCompleteFunction::OnFunctionCall(mozIStorageValueArray *aArguments,
                                             nsIVariant **_result)
   {
     // Macro to make the code a bit cleaner and easier to read.  Operates on
     // searchBehavior.
     int32_t searchBehavior = aArguments->AsInt32(kArgIndexSearchBehavior);
     #define HAS_BEHAVIOR(aBitName) \
       (searchBehavior & mozIPlacesAutoComplete::BEHAVIOR_##aBitName)
     nsAutoCString searchString;
     (void)aArguments->GetUTF8String(kArgSearchString, searchString);
     nsCString url;
     (void)aArguments->GetUTF8String(kArgIndexURL, url);
     int32_t matchBehavior = aArguments->AsInt32(kArgIndexMatchBehavior);
     // We only want to filter javascript: URLs if we are not supposed to search
     // for them, and the search does not start with "javascript:".
     if (matchBehavior != mozIPlacesAutoComplete::MATCH_ANYWHERE_UNMODIFIED &&
         !HAS_BEHAVIOR(JAVASCRIPT) &&
         !StringBeginsWith(searchString, NS_LITERAL_CSTRING("javascript:")) &&
         StringBeginsWith(url, NS_LITERAL_CSTRING("javascript:"))) {
       NS_ADDREF(*_result = new IntegerVariant(0));
       return NS_OK;
     }
     int32_t visitCount = aArguments->AsInt32(kArgIndexVisitCount);
     bool typed = aArguments->AsInt32(kArgIndexTyped) ? true : false;
     bool bookmark = aArguments->AsInt32(kArgIndexBookmark) ? true : false;
     nsAutoCString tags;
     (void)aArguments->GetUTF8String(kArgIndexTags, tags);
     int32_t openPageCount = aArguments->AsInt32(kArgIndexOpenPageCount);
     // Make sure we match all the filter requirements.  If a given restriction
     // is active, make sure the corresponding condition is not true.
     bool matches = !(
       (HAS_BEHAVIOR(HISTORY) && visitCount == 0) ||
       (HAS_BEHAVIOR(TYPED) && !typed) ||
       (HAS_BEHAVIOR(BOOKMARK) && !bookmark) ||
       (HAS_BEHAVIOR(TAG) && tags.IsVoid()) ||
       (HAS_BEHAVIOR(OPENPAGE) && openPageCount == 0)
     );
     if (!matches) {
       NS_ADDREF(*_result = new IntegerVariant(0));
       return NS_OK;
     }
     // Obtain our search function.
     searchFunctionPtr searchFunction = getSearchFunction(matchBehavior);
     // Clean up our URI spec and prepare it for searching.
     nsCString fixedURI;
     fixupURISpec(url, matchBehavior, fixedURI);
     nsAutoCString title;
     (void)aArguments->GetUTF8String(kArgIndexTitle, title);
     // Determine if every token matches either the bookmark title, tags, page
     // title, or page URL.
     nsCWhitespaceTokenizer tokenizer(searchString);
     while (matches && tokenizer.hasMoreTokens()) {
       const nsDependentCSubstring &token = tokenizer.nextToken();
       if (HAS_BEHAVIOR(TITLE) && HAS_BEHAVIOR(URL)) {
         matches = (searchFunction(token, title) || searchFunction(token, tags)) &&
                   searchFunction(token, fixedURI);
       }
       else if (HAS_BEHAVIOR(TITLE)) {
         matches = searchFunction(token, title) || searchFunction(token, tags);
       }
       else if (HAS_BEHAVIOR(URL)) {
         matches = searchFunction(token, fixedURI);
       }
       else {
         matches = searchFunction(token, title) ||
                   searchFunction(token, tags) ||
                   searchFunction(token, fixedURI);
       }
     }
     NS_ADDREF(*_result = new IntegerVariant(matches ? 1 : 0));
     return NS_OK;
     #undef HAS_BEHAVIOR
   }
 ////////////////////////////////////////////////////////////////////////////////
 //// Frecency Calculation Function
   //////////////////////////////////////////////////////////////////////////////
   //// CalculateFrecencyFunction
   /* static */
   nsresult
   CalculateFrecencyFunction::create(mozIStorageConnection *aDBConn)
   {
     nsRefPtr<CalculateFrecencyFunction> function =
       new CalculateFrecencyFunction();
     nsresult rv = aDBConn->CreateFunction(
       NS_LITERAL_CSTRING("calculate_frecency"), 1, function
     );
     NS_ENSURE_SUCCESS(rv, rv);
     return NS_OK;
   }
   NS_IMPL_ISUPPORTS(
     CalculateFrecencyFunction,
     mozIStorageFunction
   )
   //////////////////////////////////////////////////////////////////////////////
   //// mozIStorageFunction
   NS_IMETHODIMP
   CalculateFrecencyFunction::OnFunctionCall(mozIStorageValueArray *aArguments,
                                             nsIVariant **_result)
   {
     // Fetch arguments.  Use default values if they were omitted.
     uint32_t numEntries;
     nsresult rv = aArguments->GetNumEntries(&numEntries);
     NS_ENSURE_SUCCESS(rv, rv);
     NS_ASSERTION(numEntries > 0, "unexpected number of arguments");
     Telemetry::AutoTimer<Telemetry::PLACES_FRECENCY_CALC_TIME_MS> timer;
     int64_t pageId = aArguments->AsInt64(0);
     int32_t typed = numEntries > 1 ? aArguments->AsInt32(1) : 0;
     int32_t fullVisitCount = numEntries > 2 ? aArguments->AsInt32(2) : 0;
     int64_t bookmarkId = numEntries > 3 ? aArguments->AsInt64(3) : 0;
     int32_t visitCount = 0;
     int32_t hidden = 0;
     int32_t isQuery = 0;
     float pointsForSampledVisits = 0.0;
     // This is a const version of the history object for thread-safety.
     const nsNavHistory* history = nsNavHistory::GetConstHistoryService();
     NS_ENSURE_STATE(history);
     nsRefPtr<Database> DB = Database::GetDatabase();
     NS_ENSURE_STATE(DB);
     if (pageId > 0) {
       // The page is already in the database, and we can fetch current
       // params from the database.
       nsRefPtr<mozIStorageStatement> getPageInfo = DB->GetStatement(
         "SELECT typed, hidden, visit_count, "
           "(SELECT count(*) FROM moz_historyvisits WHERE place_id = :page_id), "
           "EXISTS (SELECT 1 FROM moz_bookmarks WHERE fk = :page_id), "
           "(url > 'place:' AND url < 'place;') "
         "FROM moz_places "
         "WHERE id = :page_id "
       );
       NS_ENSURE_STATE(getPageInfo);
       mozStorageStatementScoper infoScoper(getPageInfo);
       rv = getPageInfo->BindInt64ByName(NS_LITERAL_CSTRING("page_id"), pageId);
       NS_ENSURE_SUCCESS(rv, rv);
       bool hasResult;
       rv = getPageInfo->ExecuteStep(&hasResult);
       NS_ENSURE_SUCCESS(rv, rv);
       NS_ENSURE_TRUE(hasResult, NS_ERROR_UNEXPECTED);
       rv = getPageInfo->GetInt32(0, &typed);
       NS_ENSURE_SUCCESS(rv, rv);
       rv = getPageInfo->GetInt32(1, &hidden);
       NS_ENSURE_SUCCESS(rv, rv);
       rv = getPageInfo->GetInt32(2, &visitCount);
       NS_ENSURE_SUCCESS(rv, rv);
       rv = getPageInfo->GetInt32(3, &fullVisitCount);
       NS_ENSURE_SUCCESS(rv, rv);
       rv = getPageInfo->GetInt64(4, &bookmarkId);
       NS_ENSURE_SUCCESS(rv, rv);
       rv = getPageInfo->GetInt32(5, &isQuery);
       NS_ENSURE_SUCCESS(rv, rv);
       // NOTE: This is not limited to visits with "visit_type NOT IN (0,4,7,8)"
       // because otherwise it would not return any visit for those transitions
       // causing an incorrect frecency, see CalculateFrecencyInternal().
       // In case of a temporary or permanent redirect, calculate the frecency
       // as if the original page was visited.
       // Get a sample of the last visits to the page, to calculate its weight.
       nsCOMPtr<mozIStorageStatement> getVisits = DB->GetStatement(
         NS_LITERAL_CSTRING(
           "/* do not warn (bug 659740 - SQLite may ignore index if few visits exist) */"
           "SELECT "
             "ROUND((strftime('%s','now','localtime','utc') - v.visit_date/1000000)/86400), "
             "IFNULL(r.visit_type, v.visit_type), "
             "v.visit_date "
           "FROM moz_historyvisits v "
           "LEFT JOIN moz_historyvisits r ON r.id = v.from_visit AND v.visit_type BETWEEN "
         ) + nsPrintfCString("%d AND %d ", nsINavHistoryService::TRANSITION_REDIRECT_PERMANENT,
                                           nsINavHistoryService::TRANSITION_REDIRECT_TEMPORARY) +
         NS_LITERAL_CSTRING(
           "WHERE v.place_id = :page_id "
           "ORDER BY v.visit_date DESC "
         )
       );
       NS_ENSURE_STATE(getVisits);
       mozStorageStatementScoper visitsScoper(getVisits);
       rv = getVisits->BindInt64ByName(NS_LITERAL_CSTRING("page_id"), pageId);
       NS_ENSURE_SUCCESS(rv, rv);
       // Fetch only a limited number of recent visits.
       int32_t numSampledVisits = 0;
       for (int32_t maxVisits = history->GetNumVisitsForFrecency();
            numSampledVisits < maxVisits &&
            NS_SUCCEEDED(getVisits->ExecuteStep(&hasResult)) && hasResult;
            numSampledVisits++) {
         int32_t visitType;
         rv = getVisits->GetInt32(1, &visitType);
         NS_ENSURE_SUCCESS(rv, rv);
         int32_t bonus = history->GetFrecencyTransitionBonus(visitType, true);
         // Always add the bookmark visit bonus.
         if (bookmarkId) {
           bonus += history->GetFrecencyTransitionBonus(nsINavHistoryService::TRANSITION_BOOKMARK, true);
         }
         // If bonus was zero, we can skip the work to determine the weight.
         if (bonus) {
           int32_t ageInDays = getVisits->AsInt32(0);
           int32_t weight = history->GetFrecencyAgedWeight(ageInDays);
           pointsForSampledVisits += (float)(weight * (bonus / 100.0));
         }
       }
       // If we found some visits for this page, use the calculated weight.
       if (numSampledVisits) {
         // fix for bug #412219
         if (!pointsForSampledVisits) {
           // For URIs with zero points in the sampled recent visits
           // but "browsing" type visits outside the sampling range, set
           // frecency to -visit_count, so they're still shown in autocomplete.
           NS_ADDREF(*_result = new IntegerVariant(-visitCount));
         }
         else {
           // Estimate frecency using the last few visits.
           // Use ceilf() so that we don't round down to 0, which
           // would cause us to completely ignore the place during autocomplete.
           NS_ADDREF(*_result = new IntegerVariant((int32_t) ceilf(fullVisitCount * ceilf(pointsForSampledVisits) / numSampledVisits)));
         }
         return NS_OK;
       }
     }
     // This page is unknown or has no visits.  It could have just been added, so
     // use passed in or default values.
     // The code below works well for guessing the frecency on import, and we'll
     // correct later once we have visits.
     // TODO: What if we don't have visits and we never visit?  We could end up
     // with a really high value that keeps coming up in ac results? Should we
     // only do this on import?  Have to figure it out.
     int32_t bonus = 0;
     // Make it so something bookmarked and typed will have a higher frecency
     // than something just typed or just bookmarked.
     if (bookmarkId && !isQuery) {
       bonus += history->GetFrecencyTransitionBonus(nsINavHistoryService::TRANSITION_BOOKMARK, false);;
       // For unvisited bookmarks, produce a non-zero frecency, so that they show
       // up in URL bar autocomplete.
       fullVisitCount = 1;
     }
     if (typed) {
       bonus += history->GetFrecencyTransitionBonus(nsINavHistoryService::TRANSITION_TYPED, false);
     }
     // Assume "now" as our ageInDays, so use the first bucket.
     pointsForSampledVisits = history->GetFrecencyBucketWeight(1) * (bonus / (float)100.0);
     // use ceilf() so that we don't round down to 0, which
     // would cause us to completely ignore the place during autocomplete
     NS_ADDREF(*_result = new IntegerVariant((int32_t) ceilf(fullVisitCount * ceilf(pointsForSampledVisits))));
     return NS_OK;
   }
 ////////////////////////////////////////////////////////////////////////////////
 //// GUID Creation Function
   //////////////////////////////////////////////////////////////////////////////
   //// GenerateGUIDFunction
   /* static */
   nsresult
   GenerateGUIDFunction::create(mozIStorageConnection *aDBConn)
   {
     nsRefPtr<GenerateGUIDFunction> function = new GenerateGUIDFunction();
     nsresult rv = aDBConn->CreateFunction(
       NS_LITERAL_CSTRING("generate_guid"), 0, function
     );
     NS_ENSURE_SUCCESS(rv, rv);
     return NS_OK;
   }
   NS_IMPL_ISUPPORTS(
     GenerateGUIDFunction,
     mozIStorageFunction
   )
   //////////////////////////////////////////////////////////////////////////////
   //// mozIStorageFunction
   NS_IMETHODIMP
   GenerateGUIDFunction::OnFunctionCall(mozIStorageValueArray *aArguments,
                                        nsIVariant **_result)
   {
     nsAutoCString guid;
     nsresult rv = GenerateGUID(guid);
     NS_ENSURE_SUCCESS(rv, rv);
     NS_ADDREF(*_result = new UTF8TextVariant(guid));
     return NS_OK;
   }
 ////////////////////////////////////////////////////////////////////////////////
 //// Get Unreversed Host Function
   //////////////////////////////////////////////////////////////////////////////
   //// GetUnreversedHostFunction
   /* static */
   nsresult
   GetUnreversedHostFunction::create(mozIStorageConnection *aDBConn)
   {
     nsRefPtr<GetUnreversedHostFunction> function = new GetUnreversedHostFunction();
     nsresult rv = aDBConn->CreateFunction(
       NS_LITERAL_CSTRING("get_unreversed_host"), 1, function
     );
     NS_ENSURE_SUCCESS(rv, rv);
     return NS_OK;
   }
   NS_IMPL_ISUPPORTS(
     GetUnreversedHostFunction,
     mozIStorageFunction
   )
   //////////////////////////////////////////////////////////////////////////////
   //// mozIStorageFunction
   NS_IMETHODIMP
   GetUnreversedHostFunction::OnFunctionCall(mozIStorageValueArray *aArguments,
                                             nsIVariant **_result)
   {
     // Must have non-null function arguments.
     MOZ_ASSERT(aArguments);
     nsAutoString src;
     aArguments->GetString(0, src);
     nsCOMPtr<nsIWritableVariant> result =
       do_CreateInstance("@mozilla.org/variant;1");
     NS_ENSURE_STATE(result);
     if (src.Length()>1) {
       src.Truncate(src.Length() - 1);
       nsAutoString dest;
       ReverseString(src, dest);
       result->SetAsAString(dest);
     }
     else {
       result->SetAsAString(EmptyString());
     }
     NS_ADDREF(*_result = result);
     return NS_OK;
   }
 ////////////////////////////////////////////////////////////////////////////////
 //// Fixup URL Function
   //////////////////////////////////////////////////////////////////////////////
   //// FixupURLFunction
   /* static */
   nsresult
   FixupURLFunction::create(mozIStorageConnection *aDBConn)
   {
     nsRefPtr<FixupURLFunction> function = new FixupURLFunction();
     nsresult rv = aDBConn->CreateFunction(
       NS_LITERAL_CSTRING("fixup_url"), 1, function
     );
     NS_ENSURE_SUCCESS(rv, rv);
     return NS_OK;
   }
   NS_IMPL_ISUPPORTS(
     FixupURLFunction,
     mozIStorageFunction
   )
   //////////////////////////////////////////////////////////////////////////////
   //// mozIStorageFunction
   NS_IMETHODIMP
   FixupURLFunction::OnFunctionCall(mozIStorageValueArray *aArguments,
                                    nsIVariant **_result)
   {
     // Must have non-null function arguments.
     MOZ_ASSERT(aArguments);
     nsAutoString src;
     aArguments->GetString(0, src);
     nsCOMPtr<nsIWritableVariant> result =
       do_CreateInstance("@mozilla.org/variant;1");
     NS_ENSURE_STATE(result);
     // Remove common URL hostname prefixes
     if (StringBeginsWith(src, NS_LITERAL_STRING("www."))) {
       src.Cut(0, 4);
     }
     result->SetAsAString(src);
     NS_ADDREF(*_result = result);
     return NS_OK;
   }
 ////////////////////////////////////////////////////////////////////////////////
 //// Frecency Changed Notification Function
   /* static */
   nsresult
   FrecencyNotificationFunction::create(mozIStorageConnection *aDBConn)
   {
     nsRefPtr<FrecencyNotificationFunction> function =
       new FrecencyNotificationFunction();
     nsresult rv = aDBConn->CreateFunction(
       NS_LITERAL_CSTRING("notify_frecency"), 5, function
     );
     NS_ENSURE_SUCCESS(rv, rv);
     return NS_OK;
   }
   NS_IMPL_ISUPPORTS(
     FrecencyNotificationFunction,
     mozIStorageFunction
   )
   NS_IMETHODIMP
   FrecencyNotificationFunction::OnFunctionCall(mozIStorageValueArray *aArgs,
                                                nsIVariant **_result)
   {
     uint32_t numArgs;
     nsresult rv = aArgs->GetNumEntries(&numArgs);
     NS_ENSURE_SUCCESS(rv, rv);
     MOZ_ASSERT(numArgs == 5);
     int32_t newFrecency = aArgs->AsInt32(0);
     nsAutoCString spec;
     rv = aArgs->GetUTF8String(1, spec);
     NS_ENSURE_SUCCESS(rv, rv);
     nsAutoCString guid;
     rv = aArgs->GetUTF8String(2, guid);
     NS_ENSURE_SUCCESS(rv, rv);
     bool hidden = static_cast<bool>(aArgs->AsInt32(3));
     PRTime lastVisitDate = static_cast<PRTime>(aArgs->AsInt64(4));
     const nsNavHistory* navHistory = nsNavHistory::GetConstHistoryService();
     NS_ENSURE_STATE(navHistory);
     navHistory->DispatchFrecencyChangedNotification(spec, newFrecency, guid,
                                                     hidden, lastVisitDate);
     nsCOMPtr<nsIWritableVariant> result =
       do_CreateInstance("@mozilla.org/variant;1");
     NS_ENSURE_STATE(result);
     rv = result->SetAsInt32(newFrecency);
     NS_ENSURE_SUCCESS(rv, rv);
     NS_ADDREF(*_result = result);
     return NS_OK;
   }
 } // namespace places
 } // namespace mozilla

The Tor Browser / annotate

toolkit/components/places/SQLFunctions.cpp@129ffea94266 (annotated)

toolkit/components/places/SQLFunctions.cpp