/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* 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/dom/cache/DBSchema.h" #include "ipc/IPCMessageUtils.h" #include "mozilla/BasePrincipal.h" #include "mozilla/dom/HeadersBinding.h" #include "mozilla/dom/InternalHeaders.h" #include "mozilla/dom/InternalResponse.h" #include "mozilla/dom/RequestBinding.h" #include "mozilla/dom/ResponseBinding.h" #include "mozilla/dom/cache/CacheTypes.h" #include "mozilla/dom/cache/SavedTypes.h" #include "mozilla/dom/cache/Types.h" #include "mozilla/dom/cache/TypeUtils.h" #include "mozilla/net/MozURL.h" #include "mozIStorageConnection.h" #include "mozIStorageStatement.h" #include "mozStorageHelper.h" #include "nsCOMPtr.h" #include "nsCRT.h" #include "nsHttp.h" #include "nsIContentPolicy.h" #include "nsICryptoHash.h" #include "nsNetCID.h" #include "nsPrintfCString.h" #include "nsTArray.h" namespace mozilla { namespace dom { namespace cache { namespace db { const int32_t kFirstShippedSchemaVersion = 15; namespace { // ## Firefox 57 Cache API v25/v26/v27 Schema Hack Info // ### Overview // In Firefox 57 we introduced Cache API schema version 26 and Quota Manager // schema v3 to support tracking padding for opaque responses. Unfortunately, // Firefox 57 is a big release that may potentially result in users downgrading // to Firefox 56 due to 57 retiring add-ons. These schema changes have the // unfortunate side-effect of causing QuotaManager and all its clients to break // if the user downgrades to 56. In order to avoid making a bad situation // worse, we're now retrofitting 57 so that Firefox 56 won't freak out. // // ### Implementation // We're introducing a new schema version 27 that uses an on-disk schema version // of v25. We differentiate v25 from v27 by the presence of the column added // by v26. This translates to: // - v25: on-disk schema=25, no "response_padding_size" column in table // "entries". // - v26: on-disk schema=26, yes "response_padding_size" column in table // "entries". // - v27: on-disk schema=25, yes "response_padding_size" column in table // "entries". // // ### Fallout // Firefox 57 is happy because it sees schema 27 and everything is as it // expects. // // Firefox 56 non-DEBUG build is fine/happy, but DEBUG builds will not be. // - Our QuotaClient will invoke `NS_WARNING("Unknown Cache file found!");` // at QuotaManager init time. This is harmless but annoying and potentially // misleading. // - The DEBUG-only Validate() call will error out whenever an attempt is made // to open a DOM Cache database because it will notice the schema is broken // and there is no attempt at recovery. // const int32_t kHackyDowngradeSchemaVersion = 25; const int32_t kHackyPaddingSizePresentVersion = 27; // // Update this whenever the DB schema is changed. const int32_t kLatestSchemaVersion = 27; // --------- // The following constants define the SQL schema. These are defined in the // same order the SQL should be executed in CreateOrMigrateSchema(). They are // broken out as constants for convenient use in validation and migration. // --------- // The caches table is the single source of truth about what Cache // objects exist for the origin. The contents of the Cache are stored // in the entries table that references back to caches. // // The caches table is also referenced from storage. Rows in storage // represent named Cache objects. There are cases, however, where // a Cache can still exist, but not be in a named Storage. For example, // when content is still using the Cache after CacheStorage::Delete() // has been run. // // For now, the caches table mainly exists for data integrity with // foreign keys, but could be expanded to contain additional cache object // information. // // AUTOINCREMENT is necessary to prevent CacheId values from being reused. const char* const kTableCaches = "CREATE TABLE caches (" "id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT " ")"; // Security blobs are quite large and duplicated for every Response from // the same https origin. This table is used to de-duplicate this data. const char* const kTableSecurityInfo = "CREATE TABLE security_info (" "id INTEGER NOT NULL PRIMARY KEY, " "hash BLOB NOT NULL, " // first 8-bytes of the sha1 hash of data column "data BLOB NOT NULL, " // full security info data, usually a few KB "refcount INTEGER NOT NULL" ")"; // Index the smaller hash value instead of the large security data blob. const char* const kIndexSecurityInfoHash = "CREATE INDEX security_info_hash_index ON security_info (hash)"; const char* const kTableEntries = "CREATE TABLE entries (" "id INTEGER NOT NULL PRIMARY KEY, " "request_method TEXT NOT NULL, " "request_url_no_query TEXT NOT NULL, " "request_url_no_query_hash BLOB NOT NULL, " // first 8-bytes of sha1 hash "request_url_query TEXT NOT NULL, " "request_url_query_hash BLOB NOT NULL, " // first 8-bytes of sha1 hash "request_referrer TEXT NOT NULL, " "request_headers_guard INTEGER NOT NULL, " "request_mode INTEGER NOT NULL, " "request_credentials INTEGER NOT NULL, " "request_contentpolicytype INTEGER NOT NULL, " "request_cache INTEGER NOT NULL, " "request_body_id TEXT NULL, " "response_type INTEGER NOT NULL, " "response_status INTEGER NOT NULL, " "response_status_text TEXT NOT NULL, " "response_headers_guard INTEGER NOT NULL, " "response_body_id TEXT NULL, " "response_security_info_id INTEGER NULL REFERENCES security_info(id), " "response_principal_info TEXT NOT NULL, " "cache_id INTEGER NOT NULL REFERENCES caches(id) ON DELETE CASCADE, " "request_redirect INTEGER NOT NULL, " "request_referrer_policy INTEGER NOT NULL, " "request_integrity TEXT NOT NULL, " "request_url_fragment TEXT NOT NULL, " "response_padding_size INTEGER NULL " // New columns must be added at the end of table to migrate and // validate properly. ")"; // Create an index to support the QueryCache() matching algorithm. This // needs to quickly find entries in a given Cache that match the request // URL. The url query is separated in order to support the ignoreSearch // option. Finally, we index hashes of the URL values instead of the // actual strings to avoid excessive disk bloat. The index will duplicate // the contents of the columsn in the index. The hash index will prune // the vast majority of values from the query result so that normal // scanning only has to be done on a few values to find an exact URL match. const char* const kIndexEntriesRequest = "CREATE INDEX entries_request_match_index " "ON entries (cache_id, request_url_no_query_hash, " "request_url_query_hash)"; const char* const kTableRequestHeaders = "CREATE TABLE request_headers (" "name TEXT NOT NULL, " "value TEXT NOT NULL, " "entry_id INTEGER NOT NULL REFERENCES entries(id) ON DELETE CASCADE" ")"; const char* const kTableResponseHeaders = "CREATE TABLE response_headers (" "name TEXT NOT NULL, " "value TEXT NOT NULL, " "entry_id INTEGER NOT NULL REFERENCES entries(id) ON DELETE CASCADE" ")"; // We need an index on response_headers, but not on request_headers, // because we quickly need to determine if a VARY header is present. const char* const kIndexResponseHeadersName = "CREATE INDEX response_headers_name_index " "ON response_headers (name)"; const char* const kTableResponseUrlList = "CREATE TABLE response_url_list (" "url TEXT NOT NULL, " "entry_id INTEGER NOT NULL REFERENCES entries(id) ON DELETE CASCADE" ")"; // NOTE: key allows NULL below since that is how "" is represented // in a BLOB column. We use BLOB to avoid encoding issues // with storing DOMStrings. const char* const kTableStorage = "CREATE TABLE storage (" "namespace INTEGER NOT NULL, " "key BLOB NULL, " "cache_id INTEGER NOT NULL REFERENCES caches(id), " "PRIMARY KEY(namespace, key) " ")"; // --------- // End schema definition // --------- const int32_t kMaxEntriesPerStatement = 255; const uint32_t kPageSize = 4 * 1024; // Grow the database in chunks to reduce fragmentation const uint32_t kGrowthSize = 32 * 1024; const uint32_t kGrowthPages = kGrowthSize / kPageSize; static_assert(kGrowthSize % kPageSize == 0, "Growth size must be multiple of page size"); // Only release free pages when we have more than this limit const int32_t kMaxFreePages = kGrowthPages; // Limit WAL journal to a reasonable size const uint32_t kWalAutoCheckpointSize = 512 * 1024; const uint32_t kWalAutoCheckpointPages = kWalAutoCheckpointSize / kPageSize; static_assert(kWalAutoCheckpointSize % kPageSize == 0, "WAL checkpoint size must be multiple of page size"); } // namespace // If any of the static_asserts below fail, it means that you have changed // the corresponding WebIDL enum in a way that may be incompatible with the // existing data stored in the DOM Cache. You would need to update the Cache // database schema accordingly and adjust the failing static_assert. static_assert(int(HeadersGuardEnum::None) == 0 && int(HeadersGuardEnum::Request) == 1 && int(HeadersGuardEnum::Request_no_cors) == 2 && int(HeadersGuardEnum::Response) == 3 && int(HeadersGuardEnum::Immutable) == 4 && HeadersGuardEnumValues::Count == 5, "HeadersGuardEnum values are as expected"); static_assert(int(ReferrerPolicy::_empty) == 0 && int(ReferrerPolicy::No_referrer) == 1 && int(ReferrerPolicy::No_referrer_when_downgrade) == 2 && int(ReferrerPolicy::Origin) == 3 && int(ReferrerPolicy::Origin_when_cross_origin) == 4 && int(ReferrerPolicy::Unsafe_url) == 5 && int(ReferrerPolicy::Same_origin) == 6 && int(ReferrerPolicy::Strict_origin) == 7 && int(ReferrerPolicy::Strict_origin_when_cross_origin) == 8 && ReferrerPolicyValues::Count == 9, "ReferrerPolicy values are as expected"); static_assert(int(RequestMode::Same_origin) == 0 && int(RequestMode::No_cors) == 1 && int(RequestMode::Cors) == 2 && int(RequestMode::Navigate) == 3 && RequestModeValues::Count == 4, "RequestMode values are as expected"); static_assert(int(RequestCredentials::Omit) == 0 && int(RequestCredentials::Same_origin) == 1 && int(RequestCredentials::Include) == 2 && RequestCredentialsValues::Count == 3, "RequestCredentials values are as expected"); static_assert(int(RequestCache::Default) == 0 && int(RequestCache::No_store) == 1 && int(RequestCache::Reload) == 2 && int(RequestCache::No_cache) == 3 && int(RequestCache::Force_cache) == 4 && int(RequestCache::Only_if_cached) == 5 && RequestCacheValues::Count == 6, "RequestCache values are as expected"); static_assert(int(RequestRedirect::Follow) == 0 && int(RequestRedirect::Error) == 1 && int(RequestRedirect::Manual) == 2 && RequestRedirectValues::Count == 3, "RequestRedirect values are as expected"); static_assert(int(ResponseType::Basic) == 0 && int(ResponseType::Cors) == 1 && int(ResponseType::Default) == 2 && int(ResponseType::Error) == 3 && int(ResponseType::Opaque) == 4 && int(ResponseType::Opaqueredirect) == 5 && ResponseTypeValues::Count == 6, "ResponseType values are as expected"); // If the static_asserts below fails, it means that you have changed the // Namespace enum in a way that may be incompatible with the existing data // stored in the DOM Cache. You would need to update the Cache database schema // accordingly and adjust the failing static_assert. static_assert(DEFAULT_NAMESPACE == 0 && CHROME_ONLY_NAMESPACE == 1 && NUMBER_OF_NAMESPACES == 2, "Namespace values are as expected"); // If the static_asserts below fails, it means that you have changed the // nsContentPolicy enum in a way that may be incompatible with the existing data // stored in the DOM Cache. You would need to update the Cache database schema // accordingly and adjust the failing static_assert. static_assert(nsIContentPolicy::TYPE_INVALID == 0 && nsIContentPolicy::TYPE_OTHER == 1 && nsIContentPolicy::TYPE_SCRIPT == 2 && nsIContentPolicy::TYPE_IMAGE == 3 && nsIContentPolicy::TYPE_STYLESHEET == 4 && nsIContentPolicy::TYPE_OBJECT == 5 && nsIContentPolicy::TYPE_DOCUMENT == 6 && nsIContentPolicy::TYPE_SUBDOCUMENT == 7 && nsIContentPolicy::TYPE_REFRESH == 8 && nsIContentPolicy::TYPE_XBL == 9 && nsIContentPolicy::TYPE_PING == 10 && nsIContentPolicy::TYPE_XMLHTTPREQUEST == 11 && nsIContentPolicy::TYPE_DATAREQUEST == 11 && nsIContentPolicy::TYPE_OBJECT_SUBREQUEST == 12 && nsIContentPolicy::TYPE_DTD == 13 && nsIContentPolicy::TYPE_FONT == 14 && nsIContentPolicy::TYPE_MEDIA == 15 && nsIContentPolicy::TYPE_WEBSOCKET == 16 && nsIContentPolicy::TYPE_CSP_REPORT == 17 && nsIContentPolicy::TYPE_XSLT == 18 && nsIContentPolicy::TYPE_BEACON == 19 && nsIContentPolicy::TYPE_FETCH == 20 && nsIContentPolicy::TYPE_IMAGESET == 21 && nsIContentPolicy::TYPE_WEB_MANIFEST == 22 && nsIContentPolicy::TYPE_INTERNAL_SCRIPT == 23 && nsIContentPolicy::TYPE_INTERNAL_WORKER == 24 && nsIContentPolicy::TYPE_INTERNAL_SHARED_WORKER == 25 && nsIContentPolicy::TYPE_INTERNAL_EMBED == 26 && nsIContentPolicy::TYPE_INTERNAL_OBJECT == 27 && nsIContentPolicy::TYPE_INTERNAL_FRAME == 28 && nsIContentPolicy::TYPE_INTERNAL_IFRAME == 29 && nsIContentPolicy::TYPE_INTERNAL_AUDIO == 30 && nsIContentPolicy::TYPE_INTERNAL_VIDEO == 31 && nsIContentPolicy::TYPE_INTERNAL_TRACK == 32 && nsIContentPolicy::TYPE_INTERNAL_XMLHTTPREQUEST == 33 && nsIContentPolicy::TYPE_INTERNAL_EVENTSOURCE == 34 && nsIContentPolicy::TYPE_INTERNAL_SERVICE_WORKER == 35 && nsIContentPolicy::TYPE_INTERNAL_SCRIPT_PRELOAD == 36 && nsIContentPolicy::TYPE_INTERNAL_IMAGE == 37 && nsIContentPolicy::TYPE_INTERNAL_IMAGE_PRELOAD == 38 && nsIContentPolicy::TYPE_INTERNAL_STYLESHEET == 39 && nsIContentPolicy::TYPE_INTERNAL_STYLESHEET_PRELOAD == 40 && nsIContentPolicy::TYPE_INTERNAL_IMAGE_FAVICON == 41 && nsIContentPolicy::TYPE_INTERNAL_WORKER_IMPORT_SCRIPTS == 42 && nsIContentPolicy::TYPE_SAVEAS_DOWNLOAD == 43 && nsIContentPolicy::TYPE_SPECULATIVE == 44 && nsIContentPolicy::TYPE_INTERNAL_MODULE == 45 && nsIContentPolicy::TYPE_INTERNAL_MODULE_PRELOAD == 46 && nsIContentPolicy::TYPE_INTERNAL_DTD == 47 && nsIContentPolicy::TYPE_INTERNAL_FORCE_ALLOWED_DTD == 48 && nsIContentPolicy::TYPE_INTERNAL_AUDIOWORKLET == 49 && nsIContentPolicy::TYPE_INTERNAL_PAINTWORKLET == 50, "nsContentPolicyType values are as expected"); namespace { typedef int32_t EntryId; struct IdCount { explicit IdCount(int32_t aId) : mId(aId), mCount(1) {} int32_t mId; int32_t mCount; }; static nsresult QueryAll(mozIStorageConnection* aConn, CacheId aCacheId, nsTArray& aEntryIdListOut); static nsresult QueryCache(mozIStorageConnection* aConn, CacheId aCacheId, const CacheRequest& aRequest, const CacheQueryParams& aParams, nsTArray& aEntryIdListOut, uint32_t aMaxResults = UINT32_MAX); static nsresult MatchByVaryHeader(mozIStorageConnection* aConn, const CacheRequest& aRequest, EntryId entryId, bool* aSuccessOut); static nsresult DeleteEntries(mozIStorageConnection* aConn, const nsTArray& aEntryIdList, nsTArray& aDeletedBodyIdListOut, nsTArray& aDeletedSecurityIdListOut, int64_t* aDeletedPaddingSizeOut, uint32_t aPos = 0, int32_t aLen = -1); static nsresult InsertSecurityInfo(mozIStorageConnection* aConn, nsICryptoHash* aCrypto, const nsACString& aData, int32_t* aIdOut); static nsresult DeleteSecurityInfo(mozIStorageConnection* aConn, int32_t aId, int32_t aCount); static nsresult DeleteSecurityInfoList( mozIStorageConnection* aConn, const nsTArray& aDeletedStorageIdList); static nsresult InsertEntry(mozIStorageConnection* aConn, CacheId aCacheId, const CacheRequest& aRequest, const nsID* aRequestBodyId, const CacheResponse& aResponse, const nsID* aResponseBodyId); static nsresult ReadResponse(mozIStorageConnection* aConn, EntryId aEntryId, SavedResponse* aSavedResponseOut); static nsresult ReadRequest(mozIStorageConnection* aConn, EntryId aEntryId, SavedRequest* aSavedRequestOut); static void AppendListParamsToQuery(nsACString& aQuery, const nsTArray& aEntryIdList, uint32_t aPos, int32_t aLen); static nsresult BindListParamsToQuery(mozIStorageStatement* aState, const nsTArray& aEntryIdList, uint32_t aPos, int32_t aLen); static nsresult BindId(mozIStorageStatement* aState, const nsACString& aName, const nsID* aId); static nsresult ExtractId(mozIStorageStatement* aState, uint32_t aPos, nsID* aIdOut); static nsresult CreateAndBindKeyStatement(mozIStorageConnection* aConn, const char* aQueryFormat, const nsAString& aKey, mozIStorageStatement** aStateOut); static nsresult HashCString(nsICryptoHash* aCrypto, const nsACString& aIn, nsACString& aOut); nsresult GetEffectiveSchemaVersion(mozIStorageConnection* aConn, int32_t& schemaVersion); nsresult Validate(mozIStorageConnection* aConn); nsresult Migrate(mozIStorageConnection* aConn); } // namespace class MOZ_RAII AutoDisableForeignKeyChecking { public: explicit AutoDisableForeignKeyChecking(mozIStorageConnection* aConn) : mConn(aConn), mForeignKeyCheckingDisabled(false) { nsCOMPtr state; nsresult rv = mConn->CreateStatement( NS_LITERAL_CSTRING("PRAGMA foreign_keys;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return; } int32_t mode; rv = state->GetInt32(0, &mode); if (NS_WARN_IF(NS_FAILED(rv))) { return; } if (mode) { nsresult rv = mConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("PRAGMA foreign_keys = OFF;")); if (NS_WARN_IF(NS_FAILED(rv))) { return; } mForeignKeyCheckingDisabled = true; } } ~AutoDisableForeignKeyChecking() { if (mForeignKeyCheckingDisabled) { nsresult rv = mConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("PRAGMA foreign_keys = ON;")); if (NS_WARN_IF(NS_FAILED(rv))) { return; } } } private: nsCOMPtr mConn; bool mForeignKeyCheckingDisabled; }; nsresult CreateOrMigrateSchema(mozIStorageConnection* aConn) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); int32_t schemaVersion; nsresult rv = GetEffectiveSchemaVersion(aConn, schemaVersion); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (schemaVersion == kLatestSchemaVersion) { // We already have the correct schema version. Validate it matches // our expected schema and then proceed. rv = Validate(aConn); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } // Turn off checking foreign keys before starting a transaction, and restore // it once we're done. AutoDisableForeignKeyChecking restoreForeignKeyChecking(aConn); mozStorageTransaction trans(aConn, false, mozIStorageConnection::TRANSACTION_IMMEDIATE); bool needVacuum = false; if (schemaVersion) { // A schema exists, but its not the current version. Attempt to // migrate it to our new schema. rv = Migrate(aConn); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Migrations happen infrequently and reflect a chance in DB structure. // This is a good time to rebuild the database. It also helps catch // if a new migration is incorrect by fast failing on the corruption. needVacuum = true; } else { // There is no schema installed. Create the database from scratch. rv = aConn->ExecuteSimpleSQL(nsDependentCString(kTableCaches)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kTableSecurityInfo)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kIndexSecurityInfoHash)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kTableEntries)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kIndexEntriesRequest)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kTableRequestHeaders)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kTableResponseHeaders)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kIndexResponseHeadersName)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kTableResponseUrlList)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL(nsDependentCString(kTableStorage)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->SetSchemaVersion(kHackyDowngradeSchemaVersion); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = GetEffectiveSchemaVersion(aConn, schemaVersion); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } rv = Validate(aConn); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = trans.Commit(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (needVacuum) { // Unfortunately, this must be performed outside of the transaction. aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING("VACUUM")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } return rv; } nsresult InitializeConnection(mozIStorageConnection* aConn) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // This function needs to perform per-connection initialization tasks that // need to happen regardless of the schema. nsPrintfCString pragmas( // Use a smaller page size to improve perf/footprint; default is too large "PRAGMA page_size = %u; " // Enable auto_vacuum; this must happen after page_size and before WAL "PRAGMA auto_vacuum = INCREMENTAL; " "PRAGMA foreign_keys = ON; ", kPageSize); // Note, the default encoding of UTF-8 is preferred. mozStorage does all // the work necessary to convert UTF-16 nsString values for us. We don't // need ordering and the binary equality operations are correct. So, do // NOT set PRAGMA encoding to UTF-16. nsresult rv = aConn->ExecuteSimpleSQL(pragmas); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Limit fragmentation by growing the database by many pages at once. rv = aConn->SetGrowthIncrement(kGrowthSize, EmptyCString()); if (rv == NS_ERROR_FILE_TOO_BIG) { NS_WARNING("Not enough disk space to set sqlite growth increment."); rv = NS_OK; } if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Enable WAL journaling. This must be performed in a separate transaction // after changing the page_size and enabling auto_vacuum. nsPrintfCString wal( // WAL journal can grow to given number of *pages* "PRAGMA wal_autocheckpoint = %u; " // Always truncate the journal back to given number of *bytes* "PRAGMA journal_size_limit = %u; " // WAL must be enabled at the end to allow page size to be changed, etc. "PRAGMA journal_mode = WAL; ", kWalAutoCheckpointPages, kWalAutoCheckpointSize); rv = aConn->ExecuteSimpleSQL(wal); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Verify that we successfully set the vacuum mode to incremental. It // is very easy to put the database in a state where the auto_vacuum // pragma above fails silently. #ifdef DEBUG nsCOMPtr state; rv = aConn->CreateStatement(NS_LITERAL_CSTRING("PRAGMA auto_vacuum;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t mode; rv = state->GetInt32(0, &mode); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // integer value 2 is incremental mode if (NS_WARN_IF(mode != 2)) { return NS_ERROR_UNEXPECTED; } #endif return NS_OK; } nsresult CreateCacheId(mozIStorageConnection* aConn, CacheId* aCacheIdOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aCacheIdOut); nsresult rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("INSERT INTO caches DEFAULT VALUES;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsCOMPtr state; rv = aConn->CreateStatement(NS_LITERAL_CSTRING("SELECT last_insert_rowid()"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (NS_WARN_IF(!hasMoreData)) { return NS_ERROR_UNEXPECTED; } rv = state->GetInt64(0, aCacheIdOut); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult DeleteCacheId(mozIStorageConnection* aConn, CacheId aCacheId, nsTArray& aDeletedBodyIdListOut, int64_t* aDeletedPaddingSizeOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aDeletedPaddingSizeOut); // Delete the bodies explicitly as we need to read out the body IDs // anyway. These body IDs must be deleted one-by-one as content may // still be referencing them invidivually. AutoTArray matches; nsresult rv = QueryAll(aConn, aCacheId, matches); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } AutoTArray deletedSecurityIdList; int64_t deletedPaddingSize = 0; rv = DeleteEntries(aConn, matches, aDeletedBodyIdListOut, deletedSecurityIdList, &deletedPaddingSize); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } *aDeletedPaddingSizeOut = deletedPaddingSize; rv = DeleteSecurityInfoList(aConn, deletedSecurityIdList); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Delete the remainder of the cache using cascade semantics. nsCOMPtr state; rv = aConn->CreateStatement( NS_LITERAL_CSTRING("DELETE FROM caches WHERE id=:id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt64ByName(NS_LITERAL_CSTRING("id"), aCacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult IsCacheOrphaned(mozIStorageConnection* aConn, CacheId aCacheId, bool* aOrphanedOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aOrphanedOut); // err on the side of not deleting user data *aOrphanedOut = false; nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "SELECT COUNT(*) FROM storage WHERE cache_id=:cache_id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt64ByName(NS_LITERAL_CSTRING("cache_id"), aCacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } MOZ_DIAGNOSTIC_ASSERT(hasMoreData); int32_t refCount; rv = state->GetInt32(0, &refCount); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } *aOrphanedOut = refCount == 0; return rv; } nsresult FindOrphanedCacheIds(mozIStorageConnection* aConn, nsTArray& aOrphanedListOut) { nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING("SELECT id FROM caches " "WHERE id NOT IN (SELECT cache_id from storage);"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { CacheId cacheId = INVALID_CACHE_ID; rv = state->GetInt64(0, &cacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aOrphanedListOut.AppendElement(cacheId); } return rv; } nsresult FindOverallPaddingSize(mozIStorageConnection* aConn, int64_t* aOverallPaddingSizeOut) { MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aOverallPaddingSizeOut); nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING("SELECT response_padding_size FROM entries " "WHERE response_padding_size IS NOT NULL;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int64_t overallPaddingSize = 0; bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { int64_t padding_size = 0; rv = state->GetInt64(0, &padding_size); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } MOZ_DIAGNOSTIC_ASSERT(padding_size >= 0); MOZ_DIAGNOSTIC_ASSERT(INT64_MAX - padding_size >= overallPaddingSize); overallPaddingSize += padding_size; } *aOverallPaddingSizeOut = overallPaddingSize; return rv; } nsresult GetKnownBodyIds(mozIStorageConnection* aConn, nsTArray& aBodyIdListOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "SELECT request_body_id, response_body_id FROM entries;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { // extract 0 to 2 nsID structs per row for (uint32_t i = 0; i < 2; ++i) { bool isNull = false; rv = state->GetIsNull(i, &isNull); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!isNull) { nsID id; rv = ExtractId(state, i, &id); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aBodyIdListOut.AppendElement(id); } } } return rv; } nsresult CacheMatch(mozIStorageConnection* aConn, CacheId aCacheId, const CacheRequest& aRequest, const CacheQueryParams& aParams, bool* aFoundResponseOut, SavedResponse* aSavedResponseOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aFoundResponseOut); MOZ_DIAGNOSTIC_ASSERT(aSavedResponseOut); *aFoundResponseOut = false; AutoTArray matches; nsresult rv = QueryCache(aConn, aCacheId, aRequest, aParams, matches, 1); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (matches.IsEmpty()) { return rv; } rv = ReadResponse(aConn, matches[0], aSavedResponseOut); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mCacheId = aCacheId; *aFoundResponseOut = true; return rv; } nsresult CacheMatchAll(mozIStorageConnection* aConn, CacheId aCacheId, const Maybe& aMaybeRequest, const CacheQueryParams& aParams, nsTArray& aSavedResponsesOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); nsresult rv; AutoTArray matches; if (aMaybeRequest.isNothing()) { rv = QueryAll(aConn, aCacheId, matches); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } else { rv = QueryCache(aConn, aCacheId, aMaybeRequest.ref(), aParams, matches); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } // TODO: replace this with a bulk load using SQL IN clause (bug 1110458) for (uint32_t i = 0; i < matches.Length(); ++i) { SavedResponse savedResponse; rv = ReadResponse(aConn, matches[i], &savedResponse); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } savedResponse.mCacheId = aCacheId; aSavedResponsesOut.AppendElement(savedResponse); } return rv; } nsresult CachePut(mozIStorageConnection* aConn, CacheId aCacheId, const CacheRequest& aRequest, const nsID* aRequestBodyId, const CacheResponse& aResponse, const nsID* aResponseBodyId, nsTArray& aDeletedBodyIdListOut, int64_t* aDeletedPaddingSizeOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aDeletedPaddingSizeOut); CacheQueryParams params(false, false, false, false, NS_LITERAL_STRING("")); AutoTArray matches; nsresult rv = QueryCache(aConn, aCacheId, aRequest, params, matches); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } AutoTArray deletedSecurityIdList; int64_t deletedPaddingSize = 0; rv = DeleteEntries(aConn, matches, aDeletedBodyIdListOut, deletedSecurityIdList, &deletedPaddingSize); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = InsertEntry(aConn, aCacheId, aRequest, aRequestBodyId, aResponse, aResponseBodyId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Delete the security values after doing the insert to avoid churning // the security table when its not necessary. rv = DeleteSecurityInfoList(aConn, deletedSecurityIdList); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } *aDeletedPaddingSizeOut = deletedPaddingSize; return rv; } nsresult CacheDelete(mozIStorageConnection* aConn, CacheId aCacheId, const CacheRequest& aRequest, const CacheQueryParams& aParams, nsTArray& aDeletedBodyIdListOut, int64_t* aDeletedPaddingSizeOut, bool* aSuccessOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aDeletedPaddingSizeOut); MOZ_DIAGNOSTIC_ASSERT(aSuccessOut); *aSuccessOut = false; AutoTArray matches; nsresult rv = QueryCache(aConn, aCacheId, aRequest, aParams, matches); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (matches.IsEmpty()) { return rv; } AutoTArray deletedSecurityIdList; int64_t deletedPaddingSize = 0; rv = DeleteEntries(aConn, matches, aDeletedBodyIdListOut, deletedSecurityIdList, &deletedPaddingSize); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } *aDeletedPaddingSizeOut = deletedPaddingSize; rv = DeleteSecurityInfoList(aConn, deletedSecurityIdList); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } *aSuccessOut = true; return rv; } nsresult CacheKeys(mozIStorageConnection* aConn, CacheId aCacheId, const Maybe& aMaybeRequest, const CacheQueryParams& aParams, nsTArray& aSavedRequestsOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); nsresult rv; AutoTArray matches; if (aMaybeRequest.isNothing()) { rv = QueryAll(aConn, aCacheId, matches); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } else { rv = QueryCache(aConn, aCacheId, aMaybeRequest.ref(), aParams, matches); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } // TODO: replace this with a bulk load using SQL IN clause (bug 1110458) for (uint32_t i = 0; i < matches.Length(); ++i) { SavedRequest savedRequest; rv = ReadRequest(aConn, matches[i], &savedRequest); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } savedRequest.mCacheId = aCacheId; aSavedRequestsOut.AppendElement(savedRequest); } return rv; } nsresult StorageMatch(mozIStorageConnection* aConn, Namespace aNamespace, const CacheRequest& aRequest, const CacheQueryParams& aParams, bool* aFoundResponseOut, SavedResponse* aSavedResponseOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aFoundResponseOut); MOZ_DIAGNOSTIC_ASSERT(aSavedResponseOut); *aFoundResponseOut = false; nsresult rv; // If we are given a cache to check, then simply find its cache ID // and perform the match. if (!aParams.cacheName().EqualsLiteral("")) { bool foundCache = false; // no invalid CacheId, init to least likely real value CacheId cacheId = INVALID_CACHE_ID; rv = StorageGetCacheId(aConn, aNamespace, aParams.cacheName(), &foundCache, &cacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!foundCache) { return NS_OK; } rv = CacheMatch(aConn, cacheId, aRequest, aParams, aFoundResponseOut, aSavedResponseOut); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } // Otherwise we need to get a list of all the cache IDs in this namespace. nsCOMPtr state; rv = aConn->CreateStatement( NS_LITERAL_CSTRING("SELECT cache_id FROM storage WHERE " "namespace=:namespace ORDER BY rowid;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("namespace"), aNamespace); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } AutoTArray cacheIdList; bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { CacheId cacheId = INVALID_CACHE_ID; rv = state->GetInt64(0, &cacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } cacheIdList.AppendElement(cacheId); } // Now try to find a match in each cache in order for (uint32_t i = 0; i < cacheIdList.Length(); ++i) { rv = CacheMatch(aConn, cacheIdList[i], aRequest, aParams, aFoundResponseOut, aSavedResponseOut); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (*aFoundResponseOut) { aSavedResponseOut->mCacheId = cacheIdList[i]; return rv; } } return NS_OK; } nsresult StorageGetCacheId(mozIStorageConnection* aConn, Namespace aNamespace, const nsAString& aKey, bool* aFoundCacheOut, CacheId* aCacheIdOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aFoundCacheOut); MOZ_DIAGNOSTIC_ASSERT(aCacheIdOut); *aFoundCacheOut = false; // How we constrain the key column depends on the value of our key. Use // a format string for the query and let CreateAndBindKeyStatement() fill // it in for us. const char* query = "SELECT cache_id FROM storage " "WHERE namespace=:namespace AND %s " "ORDER BY rowid;"; nsCOMPtr state; nsresult rv = CreateAndBindKeyStatement(aConn, query, aKey, getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("namespace"), aNamespace); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!hasMoreData) { return rv; } rv = state->GetInt64(0, aCacheIdOut); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } *aFoundCacheOut = true; return rv; } nsresult StoragePutCache(mozIStorageConnection* aConn, Namespace aNamespace, const nsAString& aKey, CacheId aCacheId) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING("INSERT INTO storage (namespace, key, cache_id) " "VALUES (:namespace, :key, :cache_id);"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("namespace"), aNamespace); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindStringAsBlobByName(NS_LITERAL_CSTRING("key"), aKey); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt64ByName(NS_LITERAL_CSTRING("cache_id"), aCacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult StorageForgetCache(mozIStorageConnection* aConn, Namespace aNamespace, const nsAString& aKey) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // How we constrain the key column depends on the value of our key. Use // a format string for the query and let CreateAndBindKeyStatement() fill // it in for us. const char* query = "DELETE FROM storage WHERE namespace=:namespace AND %s;"; nsCOMPtr state; nsresult rv = CreateAndBindKeyStatement(aConn, query, aKey, getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("namespace"), aNamespace); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult StorageGetKeys(mozIStorageConnection* aConn, Namespace aNamespace, nsTArray& aKeysOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "SELECT key FROM storage WHERE namespace=:namespace ORDER BY rowid;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("namespace"), aNamespace); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { nsAutoString key; rv = state->GetBlobAsString(0, key); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aKeysOut.AppendElement(key); } return rv; } namespace { nsresult QueryAll(mozIStorageConnection* aConn, CacheId aCacheId, nsTArray& aEntryIdListOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "SELECT id FROM entries WHERE cache_id=:cache_id ORDER BY id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt64ByName(NS_LITERAL_CSTRING("cache_id"), aCacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { EntryId entryId = INT32_MAX; rv = state->GetInt32(0, &entryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aEntryIdListOut.AppendElement(entryId); } return rv; } nsresult QueryCache(mozIStorageConnection* aConn, CacheId aCacheId, const CacheRequest& aRequest, const CacheQueryParams& aParams, nsTArray& aEntryIdListOut, uint32_t aMaxResults) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aMaxResults > 0); if (!aParams.ignoreMethod() && !aRequest.method().LowerCaseEqualsLiteral("get")) { return NS_OK; } nsAutoCString query( "SELECT id, COUNT(response_headers.name) AS vary_count " "FROM entries " "LEFT OUTER JOIN response_headers ON " "entries.id=response_headers.entry_id " "AND response_headers.name='vary' COLLATE NOCASE " "WHERE entries.cache_id=:cache_id " "AND entries.request_url_no_query_hash=:url_no_query_hash "); if (!aParams.ignoreSearch()) { query.AppendLiteral("AND entries.request_url_query_hash=:url_query_hash "); } query.AppendLiteral("AND entries.request_url_no_query=:url_no_query "); if (!aParams.ignoreSearch()) { query.AppendLiteral("AND entries.request_url_query=:url_query "); } query.AppendLiteral("GROUP BY entries.id ORDER BY entries.id;"); nsCOMPtr state; nsresult rv = aConn->CreateStatement(query, getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt64ByName(NS_LITERAL_CSTRING("cache_id"), aCacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsCOMPtr crypto = do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID, &rv); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsAutoCString urlWithoutQueryHash; rv = HashCString(crypto, aRequest.urlWithoutQuery(), urlWithoutQueryHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringAsBlobByName( NS_LITERAL_CSTRING("url_no_query_hash"), urlWithoutQueryHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!aParams.ignoreSearch()) { nsAutoCString urlQueryHash; rv = HashCString(crypto, aRequest.urlQuery(), urlQueryHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringAsBlobByName(NS_LITERAL_CSTRING("url_query_hash"), urlQueryHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("url_no_query"), aRequest.urlWithoutQuery()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!aParams.ignoreSearch()) { rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("url_query"), aRequest.urlQuery()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { // no invalid EntryId, init to least likely real value EntryId entryId = INT32_MAX; rv = state->GetInt32(0, &entryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t varyCount; rv = state->GetInt32(1, &varyCount); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!aParams.ignoreVary() && varyCount > 0) { bool matchedByVary = false; rv = MatchByVaryHeader(aConn, aRequest, entryId, &matchedByVary); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!matchedByVary) { continue; } } aEntryIdListOut.AppendElement(entryId); if (aEntryIdListOut.Length() == aMaxResults) { return NS_OK; } } return rv; } nsresult MatchByVaryHeader(mozIStorageConnection* aConn, const CacheRequest& aRequest, EntryId entryId, bool* aSuccessOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); *aSuccessOut = false; nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING("SELECT value FROM response_headers " "WHERE name='vary' COLLATE NOCASE " "AND entry_id=:entry_id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("entry_id"), entryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } AutoTArray varyValues; bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { nsAutoCString value; rv = state->GetUTF8String(0, value); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } varyValues.AppendElement(value); } if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Should not have called this function if this was not the case MOZ_DIAGNOSTIC_ASSERT(!varyValues.IsEmpty()); state->Reset(); rv = aConn->CreateStatement( NS_LITERAL_CSTRING("SELECT name, value FROM request_headers " "WHERE entry_id=:entry_id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("entry_id"), entryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } RefPtr cachedHeaders = new InternalHeaders(HeadersGuardEnum::None); while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { nsAutoCString name; nsAutoCString value; rv = state->GetUTF8String(0, name); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetUTF8String(1, value); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } ErrorResult errorResult; cachedHeaders->Append(name, value, errorResult); if (errorResult.Failed()) { return errorResult.StealNSResult(); } } if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } RefPtr queryHeaders = TypeUtils::ToInternalHeaders(aRequest.headers()); // Assume the vary headers match until we find a conflict bool varyHeadersMatch = true; for (uint32_t i = 0; i < varyValues.Length(); ++i) { // Extract the header names inside the Vary header value. nsAutoCString varyValue(varyValues[i]); char* rawBuffer = varyValue.BeginWriting(); char* token = nsCRT::strtok(rawBuffer, NS_HTTP_HEADER_SEPS, &rawBuffer); bool bailOut = false; for (; token; token = nsCRT::strtok(rawBuffer, NS_HTTP_HEADER_SEPS, &rawBuffer)) { nsDependentCString header(token); MOZ_DIAGNOSTIC_ASSERT(!header.EqualsLiteral("*"), "We should have already caught this in " "TypeUtils::ToPCacheResponseWithoutBody()"); ErrorResult errorResult; nsAutoCString queryValue; queryHeaders->Get(header, queryValue, errorResult); if (errorResult.Failed()) { errorResult.SuppressException(); MOZ_DIAGNOSTIC_ASSERT(queryValue.IsEmpty()); } nsAutoCString cachedValue; cachedHeaders->Get(header, cachedValue, errorResult); if (errorResult.Failed()) { errorResult.SuppressException(); MOZ_DIAGNOSTIC_ASSERT(cachedValue.IsEmpty()); } if (queryValue != cachedValue) { varyHeadersMatch = false; bailOut = true; break; } } if (bailOut) { break; } } *aSuccessOut = varyHeadersMatch; return rv; } nsresult DeleteEntries(mozIStorageConnection* aConn, const nsTArray& aEntryIdList, nsTArray& aDeletedBodyIdListOut, nsTArray& aDeletedSecurityIdListOut, int64_t* aDeletedPaddingSizeOut, uint32_t aPos, int32_t aLen) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aDeletedPaddingSizeOut); if (aEntryIdList.IsEmpty()) { return NS_OK; } MOZ_DIAGNOSTIC_ASSERT(aPos < aEntryIdList.Length()); if (aLen < 0) { aLen = aEntryIdList.Length() - aPos; } // Sqlite limits the number of entries allowed for an IN clause, // so split up larger operations. if (aLen > kMaxEntriesPerStatement) { int64_t overallDeletedPaddingSize = 0; uint32_t curPos = aPos; int32_t remaining = aLen; while (remaining > 0) { int64_t deletedPaddingSize = 0; int32_t max = kMaxEntriesPerStatement; int32_t curLen = std::min(max, remaining); nsresult rv = DeleteEntries(aConn, aEntryIdList, aDeletedBodyIdListOut, aDeletedSecurityIdListOut, &deletedPaddingSize, curPos, curLen); if (NS_FAILED(rv)) { return rv; } MOZ_DIAGNOSTIC_ASSERT(INT64_MAX - deletedPaddingSize >= overallDeletedPaddingSize); overallDeletedPaddingSize += deletedPaddingSize; curPos += curLen; remaining -= curLen; } *aDeletedPaddingSizeOut += overallDeletedPaddingSize; return NS_OK; } nsCOMPtr state; nsAutoCString query( "SELECT " "request_body_id, " "response_body_id, " "response_security_info_id, " "response_padding_size " "FROM entries WHERE id IN ("); AppendListParamsToQuery(query, aEntryIdList, aPos, aLen); query.AppendLiteral(")"); nsresult rv = aConn->CreateStatement(query, getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = BindListParamsToQuery(state, aEntryIdList, aPos, aLen); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int64_t overallPaddingSize = 0; bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { // extract 0 to 2 nsID structs per row for (uint32_t i = 0; i < 2; ++i) { bool isNull = false; rv = state->GetIsNull(i, &isNull); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!isNull) { nsID id; rv = ExtractId(state, i, &id); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aDeletedBodyIdListOut.AppendElement(id); } } // and then a possible third entry for the security id bool isNull = false; rv = state->GetIsNull(2, &isNull); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!isNull) { int32_t securityId = -1; rv = state->GetInt32(2, &securityId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // First try to increment the count for this ID if we're already // seen it bool found = false; for (uint32_t i = 0; i < aDeletedSecurityIdListOut.Length(); ++i) { if (aDeletedSecurityIdListOut[i].mId == securityId) { found = true; aDeletedSecurityIdListOut[i].mCount += 1; break; } } // Otherwise add a new entry for this ID with a count of 1 if (!found) { aDeletedSecurityIdListOut.AppendElement(IdCount(securityId)); } } // It's possible to have null padding size for non-opaque response rv = state->GetIsNull(3, &isNull); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!isNull) { int64_t paddingSize = 0; rv = state->GetInt64(3, &paddingSize); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } MOZ_DIAGNOSTIC_ASSERT(paddingSize >= 0); MOZ_DIAGNOSTIC_ASSERT(INT64_MAX - overallPaddingSize >= paddingSize); overallPaddingSize += paddingSize; } } *aDeletedPaddingSizeOut = overallPaddingSize; // Dependent records removed via ON DELETE CASCADE query = NS_LITERAL_CSTRING("DELETE FROM entries WHERE id IN ("); AppendListParamsToQuery(query, aEntryIdList, aPos, aLen); query.AppendLiteral(")"); rv = aConn->CreateStatement(query, getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = BindListParamsToQuery(state, aEntryIdList, aPos, aLen); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult InsertSecurityInfo(mozIStorageConnection* aConn, nsICryptoHash* aCrypto, const nsACString& aData, int32_t* aIdOut) { MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aCrypto); MOZ_DIAGNOSTIC_ASSERT(aIdOut); MOZ_DIAGNOSTIC_ASSERT(!aData.IsEmpty()); // We want to use an index to find existing security blobs, but indexing // the full blob would be quite expensive. Instead, we index a small // hash value. Calculate this hash as the first 8 bytes of the SHA1 of // the full data. nsAutoCString hash; nsresult rv = HashCString(aCrypto, aData, hash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Next, search for an existing entry for this blob by comparing the hash // value first and then the full data. SQLite is smart enough to use // the index on the hash to search the table before doing the expensive // comparison of the large data column. (This was verified with EXPLAIN.) nsCOMPtr state; rv = aConn->CreateStatement( NS_LITERAL_CSTRING( // Note that hash and data are blobs, but we can use = here since the // columns are NOT NULL. "SELECT id, refcount FROM security_info WHERE hash=:hash AND " "data=:data;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringAsBlobByName(NS_LITERAL_CSTRING("hash"), hash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringAsBlobByName(NS_LITERAL_CSTRING("data"), aData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // This security info blob is already in the database if (hasMoreData) { // get the existing security blob id to return rv = state->GetInt32(0, aIdOut); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t refcount = -1; rv = state->GetInt32(1, &refcount); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // But first, update the refcount in the database. refcount += 1; rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "UPDATE security_info SET refcount=:refcount WHERE id=:id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("refcount"), refcount); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("id"), *aIdOut); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return NS_OK; } // This is a new security info blob. Create a new row in the security table // with an initial refcount of 1. rv = aConn->CreateStatement( NS_LITERAL_CSTRING("INSERT INTO security_info (hash, data, refcount) " "VALUES (:hash, :data, 1);"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringAsBlobByName(NS_LITERAL_CSTRING("hash"), hash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringAsBlobByName(NS_LITERAL_CSTRING("data"), aData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->CreateStatement(NS_LITERAL_CSTRING("SELECT last_insert_rowid()"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetInt32(0, aIdOut); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return NS_OK; } nsresult DeleteSecurityInfo(mozIStorageConnection* aConn, int32_t aId, int32_t aCount) { // First, we need to determine the current refcount for this security blob. nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING("SELECT refcount FROM security_info WHERE id=:id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("id"), aId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t refcount = -1; rv = state->GetInt32(0, &refcount); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } MOZ_DIAGNOSTIC_ASSERT(refcount >= aCount); // Next, calculate the new refcount int32_t newCount = refcount - aCount; // If the last reference to this security blob was removed we can // just remove the entire row. if (newCount == 0) { rv = aConn->CreateStatement( NS_LITERAL_CSTRING("DELETE FROM security_info WHERE id=:id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("id"), aId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return NS_OK; } // Otherwise update the refcount in the table to reflect the reduced // number of references to the security blob. rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "UPDATE security_info SET refcount=:refcount WHERE id=:id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("refcount"), newCount); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("id"), aId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return NS_OK; } nsresult DeleteSecurityInfoList( mozIStorageConnection* aConn, const nsTArray& aDeletedStorageIdList) { for (uint32_t i = 0; i < aDeletedStorageIdList.Length(); ++i) { nsresult rv = DeleteSecurityInfo(aConn, aDeletedStorageIdList[i].mId, aDeletedStorageIdList[i].mCount); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } return NS_OK; } nsresult InsertEntry(mozIStorageConnection* aConn, CacheId aCacheId, const CacheRequest& aRequest, const nsID* aRequestBodyId, const CacheResponse& aResponse, const nsID* aResponseBodyId) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); nsresult rv = NS_OK; nsCOMPtr crypto = do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID, &rv); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t securityId = -1; if (!aResponse.channelInfo().securityInfo().IsEmpty()) { rv = InsertSecurityInfo( aConn, crypto, aResponse.channelInfo().securityInfo(), &securityId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } nsCOMPtr state; rv = aConn->CreateStatement(NS_LITERAL_CSTRING("INSERT INTO entries (" "request_method, " "request_url_no_query, " "request_url_no_query_hash, " "request_url_query, " "request_url_query_hash, " "request_url_fragment, " "request_referrer, " "request_referrer_policy, " "request_headers_guard, " "request_mode, " "request_credentials, " "request_contentpolicytype, " "request_cache, " "request_redirect, " "request_integrity, " "request_body_id, " "response_type, " "response_status, " "response_status_text, " "response_headers_guard, " "response_body_id, " "response_security_info_id, " "response_principal_info, " "response_padding_size, " "cache_id " ") VALUES (" ":request_method, " ":request_url_no_query, " ":request_url_no_query_hash, " ":request_url_query, " ":request_url_query_hash, " ":request_url_fragment, " ":request_referrer, " ":request_referrer_policy, " ":request_headers_guard, " ":request_mode, " ":request_credentials, " ":request_contentpolicytype, " ":request_cache, " ":request_redirect, " ":request_integrity, " ":request_body_id, " ":response_type, " ":response_status, " ":response_status_text, " ":response_headers_guard, " ":response_body_id, " ":response_security_info_id, " ":response_principal_info, " ":response_padding_size, " ":cache_id " ");"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("request_method"), aRequest.method()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("request_url_no_query"), aRequest.urlWithoutQuery()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsAutoCString urlWithoutQueryHash; rv = HashCString(crypto, aRequest.urlWithoutQuery(), urlWithoutQueryHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringAsBlobByName( NS_LITERAL_CSTRING("request_url_no_query_hash"), urlWithoutQueryHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("request_url_query"), aRequest.urlQuery()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsAutoCString urlQueryHash; rv = HashCString(crypto, aRequest.urlQuery(), urlQueryHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringAsBlobByName( NS_LITERAL_CSTRING("request_url_query_hash"), urlQueryHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("request_url_fragment"), aRequest.urlFragment()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindStringByName(NS_LITERAL_CSTRING("request_referrer"), aRequest.referrer()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("request_referrer_policy"), static_cast(aRequest.referrerPolicy())); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("request_headers_guard"), static_cast(aRequest.headersGuard())); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("request_mode"), static_cast(aRequest.mode())); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("request_credentials"), static_cast(aRequest.credentials())); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName( NS_LITERAL_CSTRING("request_contentpolicytype"), static_cast(aRequest.contentPolicyType())); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("request_cache"), static_cast(aRequest.requestCache())); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("request_redirect"), static_cast(aRequest.requestRedirect())); rv = state->BindStringByName(NS_LITERAL_CSTRING("request_integrity"), aRequest.integrity()); rv = BindId(state, NS_LITERAL_CSTRING("request_body_id"), aRequestBodyId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("response_type"), static_cast(aResponse.type())); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("response_status"), aResponse.status()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("response_status_text"), aResponse.statusText()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("response_headers_guard"), static_cast(aResponse.headersGuard())); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = BindId(state, NS_LITERAL_CSTRING("response_body_id"), aResponseBodyId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (aResponse.channelInfo().securityInfo().IsEmpty()) { rv = state->BindNullByName(NS_LITERAL_CSTRING("response_security_info_id")); } else { rv = state->BindInt32ByName(NS_LITERAL_CSTRING("response_security_info_id"), securityId); } if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsAutoCString serializedInfo; // We only allow content serviceworkers right now. if (aResponse.principalInfo().isSome()) { const mozilla::ipc::PrincipalInfo& principalInfo = aResponse.principalInfo().ref(); MOZ_DIAGNOSTIC_ASSERT(principalInfo.type() == mozilla::ipc::PrincipalInfo::TContentPrincipalInfo); const mozilla::ipc::ContentPrincipalInfo& cInfo = principalInfo.get_ContentPrincipalInfo(); serializedInfo.Append(cInfo.spec()); nsAutoCString suffix; cInfo.attrs().CreateSuffix(suffix); serializedInfo.Append(suffix); } rv = state->BindUTF8StringByName( NS_LITERAL_CSTRING("response_principal_info"), serializedInfo); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (aResponse.paddingSize() == InternalResponse::UNKNOWN_PADDING_SIZE) { MOZ_DIAGNOSTIC_ASSERT(aResponse.type() != ResponseType::Opaque); rv = state->BindNullByName(NS_LITERAL_CSTRING("response_padding_size")); } else { MOZ_DIAGNOSTIC_ASSERT(aResponse.paddingSize() >= 0); MOZ_DIAGNOSTIC_ASSERT(aResponse.type() == ResponseType::Opaque); rv = state->BindInt64ByName(NS_LITERAL_CSTRING("response_padding_size"), aResponse.paddingSize()); } if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt64ByName(NS_LITERAL_CSTRING("cache_id"), aCacheId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->CreateStatement(NS_LITERAL_CSTRING("SELECT last_insert_rowid()"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t entryId; rv = state->GetInt32(0, &entryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->CreateStatement( NS_LITERAL_CSTRING("INSERT INTO request_headers (" "name, " "value, " "entry_id " ") VALUES (:name, :value, :entry_id)"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } const nsTArray& requestHeaders = aRequest.headers(); for (uint32_t i = 0; i < requestHeaders.Length(); ++i) { rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("name"), requestHeaders[i].name()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("value"), requestHeaders[i].value()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("entry_id"), entryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } rv = aConn->CreateStatement( NS_LITERAL_CSTRING("INSERT INTO response_headers (" "name, " "value, " "entry_id " ") VALUES (:name, :value, :entry_id)"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } const nsTArray& responseHeaders = aResponse.headers(); for (uint32_t i = 0; i < responseHeaders.Length(); ++i) { rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("name"), responseHeaders[i].name()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("value"), responseHeaders[i].value()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("entry_id"), entryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } rv = aConn->CreateStatement( NS_LITERAL_CSTRING("INSERT INTO response_url_list (" "url, " "entry_id " ") VALUES (:url, :entry_id)"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } const nsTArray& responseUrlList = aResponse.urlList(); for (uint32_t i = 0; i < responseUrlList.Length(); ++i) { rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("url"), responseUrlList[i]); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("entry_id"), entryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } return rv; } nsresult ReadResponse(mozIStorageConnection* aConn, EntryId aEntryId, SavedResponse* aSavedResponseOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aSavedResponseOut); nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "SELECT " "entries.response_type, " "entries.response_status, " "entries.response_status_text, " "entries.response_headers_guard, " "entries.response_body_id, " "entries.response_principal_info, " "entries.response_padding_size, " "security_info.data " "FROM entries " "LEFT OUTER JOIN security_info " "ON entries.response_security_info_id=security_info.id " "WHERE entries.id=:id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("id"), aEntryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t type; rv = state->GetInt32(0, &type); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mValue.type() = static_cast(type); int32_t status; rv = state->GetInt32(1, &status); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mValue.status() = status; rv = state->GetUTF8String(2, aSavedResponseOut->mValue.statusText()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t guard; rv = state->GetInt32(3, &guard); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mValue.headersGuard() = static_cast(guard); bool nullBody = false; rv = state->GetIsNull(4, &nullBody); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mHasBodyId = !nullBody; if (aSavedResponseOut->mHasBodyId) { rv = ExtractId(state, 4, &aSavedResponseOut->mBodyId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } nsAutoCString serializedInfo; rv = state->GetUTF8String(5, serializedInfo); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mValue.principalInfo() = Nothing(); if (!serializedInfo.IsEmpty()) { nsAutoCString specNoSuffix; OriginAttributes attrs; if (!attrs.PopulateFromOrigin(serializedInfo, specNoSuffix)) { NS_WARNING("Something went wrong parsing a serialized principal!"); return NS_ERROR_FAILURE; } RefPtr url; rv = net::MozURL::Init(getter_AddRefs(url), specNoSuffix); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } #ifdef DEBUG nsDependentCSubstring scheme = url->Scheme(); MOZ_ASSERT(scheme == "http" || scheme == "https" || scheme == "file"); #endif nsCString origin; url->Origin(origin); nsCString baseDomain; rv = url->BaseDomain(baseDomain); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mValue.principalInfo() = Some(mozilla::ipc::ContentPrincipalInfo(attrs, origin, specNoSuffix, Nothing(), baseDomain)); } bool nullPadding = false; rv = state->GetIsNull(6, &nullPadding); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (nullPadding) { MOZ_DIAGNOSTIC_ASSERT(aSavedResponseOut->mValue.type() != ResponseType::Opaque); aSavedResponseOut->mValue.paddingSize() = InternalResponse::UNKNOWN_PADDING_SIZE; } else { MOZ_DIAGNOSTIC_ASSERT(aSavedResponseOut->mValue.type() == ResponseType::Opaque); int64_t paddingSize = 0; rv = state->GetInt64(6, &paddingSize); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } MOZ_DIAGNOSTIC_ASSERT(paddingSize >= 0); aSavedResponseOut->mValue.paddingSize() = paddingSize; } rv = state->GetBlobAsUTF8String( 7, aSavedResponseOut->mValue.channelInfo().securityInfo()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->CreateStatement(NS_LITERAL_CSTRING("SELECT " "name, " "value " "FROM response_headers " "WHERE entry_id=:entry_id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("entry_id"), aEntryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { HeadersEntry header; rv = state->GetUTF8String(0, header.name()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetUTF8String(1, header.value()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mValue.headers().AppendElement(header); } rv = aConn->CreateStatement(NS_LITERAL_CSTRING("SELECT " "url " "FROM response_url_list " "WHERE entry_id=:entry_id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("entry_id"), aEntryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { nsCString url; rv = state->GetUTF8String(0, url); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedResponseOut->mValue.urlList().AppendElement(url); } return rv; } nsresult ReadRequest(mozIStorageConnection* aConn, EntryId aEntryId, SavedRequest* aSavedRequestOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aSavedRequestOut); nsCOMPtr state; nsresult rv = aConn->CreateStatement(NS_LITERAL_CSTRING("SELECT " "request_method, " "request_url_no_query, " "request_url_query, " "request_url_fragment, " "request_referrer, " "request_referrer_policy, " "request_headers_guard, " "request_mode, " "request_credentials, " "request_contentpolicytype, " "request_cache, " "request_redirect, " "request_integrity, " "request_body_id " "FROM entries " "WHERE id=:id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("id"), aEntryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetUTF8String(0, aSavedRequestOut->mValue.method()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetUTF8String(1, aSavedRequestOut->mValue.urlWithoutQuery()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetUTF8String(2, aSavedRequestOut->mValue.urlQuery()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetUTF8String(3, aSavedRequestOut->mValue.urlFragment()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetString(4, aSavedRequestOut->mValue.referrer()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t referrerPolicy; rv = state->GetInt32(5, &referrerPolicy); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mValue.referrerPolicy() = static_cast(referrerPolicy); int32_t guard; rv = state->GetInt32(6, &guard); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mValue.headersGuard() = static_cast(guard); int32_t mode; rv = state->GetInt32(7, &mode); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mValue.mode() = static_cast(mode); int32_t credentials; rv = state->GetInt32(8, &credentials); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mValue.credentials() = static_cast(credentials); int32_t requestContentPolicyType; rv = state->GetInt32(9, &requestContentPolicyType); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mValue.contentPolicyType() = static_cast(requestContentPolicyType); int32_t requestCache; rv = state->GetInt32(10, &requestCache); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mValue.requestCache() = static_cast(requestCache); int32_t requestRedirect; rv = state->GetInt32(11, &requestRedirect); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mValue.requestRedirect() = static_cast(requestRedirect); rv = state->GetString(12, aSavedRequestOut->mValue.integrity()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool nullBody = false; rv = state->GetIsNull(13, &nullBody); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mHasBodyId = !nullBody; if (aSavedRequestOut->mHasBodyId) { rv = ExtractId(state, 13, &aSavedRequestOut->mBodyId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } rv = aConn->CreateStatement(NS_LITERAL_CSTRING("SELECT " "name, " "value " "FROM request_headers " "WHERE entry_id=:entry_id;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindInt32ByName(NS_LITERAL_CSTRING("entry_id"), aEntryId); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { HeadersEntry header; rv = state->GetUTF8String(0, header.name()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->GetUTF8String(1, header.value()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aSavedRequestOut->mValue.headers().AppendElement(header); } return rv; } void AppendListParamsToQuery(nsACString& aQuery, const nsTArray& aEntryIdList, uint32_t aPos, int32_t aLen) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT((aPos + aLen) <= aEntryIdList.Length()); for (int32_t i = aPos; i < aLen; ++i) { if (i == 0) { aQuery.AppendLiteral("?"); } else { aQuery.AppendLiteral(",?"); } } } nsresult BindListParamsToQuery(mozIStorageStatement* aState, const nsTArray& aEntryIdList, uint32_t aPos, int32_t aLen) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT((aPos + aLen) <= aEntryIdList.Length()); for (int32_t i = aPos; i < aLen; ++i) { nsresult rv = aState->BindInt32ByIndex(i, aEntryIdList[i]); NS_ENSURE_SUCCESS(rv, rv); } return NS_OK; } nsresult BindId(mozIStorageStatement* aState, const nsACString& aName, const nsID* aId) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aState); nsresult rv; if (!aId) { rv = aState->BindNullByName(aName); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } char idBuf[NSID_LENGTH]; aId->ToProvidedString(idBuf); rv = aState->BindUTF8StringByName(aName, nsDependentCString(idBuf)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult ExtractId(mozIStorageStatement* aState, uint32_t aPos, nsID* aIdOut) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aState); MOZ_DIAGNOSTIC_ASSERT(aIdOut); nsAutoCString idString; nsresult rv = aState->GetUTF8String(aPos, idString); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool success = aIdOut->Parse(idString.get()); if (NS_WARN_IF(!success)) { return NS_ERROR_UNEXPECTED; } return rv; } nsresult CreateAndBindKeyStatement(mozIStorageConnection* aConn, const char* aQueryFormat, const nsAString& aKey, mozIStorageStatement** aStateOut) { MOZ_DIAGNOSTIC_ASSERT(aConn); MOZ_DIAGNOSTIC_ASSERT(aQueryFormat); MOZ_DIAGNOSTIC_ASSERT(aStateOut); // The key is stored as a blob to avoid encoding issues. An empty string // is mapped to NULL for blobs. Normally we would just write the query // as "key IS :key" to do the proper NULL checking, but that prevents // sqlite from using the key index. Therefore use "IS NULL" explicitly // if the key is empty, otherwise use "=:key" so that sqlite uses the // index. const char* constraint = nullptr; if (aKey.IsEmpty()) { constraint = "key IS NULL"; } else { constraint = "key=:key"; } nsPrintfCString query(aQueryFormat, constraint); nsCOMPtr state; nsresult rv = aConn->CreateStatement(query, getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (!aKey.IsEmpty()) { rv = state->BindStringAsBlobByName(NS_LITERAL_CSTRING("key"), aKey); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } } state.forget(aStateOut); return rv; } nsresult HashCString(nsICryptoHash* aCrypto, const nsACString& aIn, nsACString& aOut) { MOZ_DIAGNOSTIC_ASSERT(aCrypto); nsresult rv = aCrypto->Init(nsICryptoHash::SHA1); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aCrypto->Update(reinterpret_cast(aIn.BeginReading()), aIn.Length()); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsAutoCString fullHash; rv = aCrypto->Finish(false /* based64 result */, fullHash); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aOut = Substring(fullHash, 0, 8); return rv; } } // namespace nsresult IncrementalVacuum(mozIStorageConnection* aConn) { // Determine how much free space is in the database. nsCOMPtr state; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING("PRAGMA freelist_count;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } int32_t freePages = 0; rv = state->GetInt32(0, &freePages); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // We have a relatively small page size, so we want to be careful to avoid // fragmentation. We already use a growth incremental which will cause // sqlite to allocate and release multiple pages at the same time. We can // further reduce fragmentation by making our allocated chunks a bit // "sticky". This is done by creating some hysteresis where we allocate // pages/chunks as soon as we need them, but we only release pages/chunks // when we have a large amount of free space. This helps with the case // where a page is adding and remove resources causing it to dip back and // forth across a chunk boundary. // // So only proceed with releasing pages if we have more than our constant // threshold. if (freePages <= kMaxFreePages) { return NS_OK; } // Release the excess pages back to the sqlite VFS. This may also release // chunks of multiple pages back to the OS. int32_t pagesToRelease = freePages - kMaxFreePages; rv = aConn->ExecuteSimpleSQL( nsPrintfCString("PRAGMA incremental_vacuum(%d);", pagesToRelease)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Verify that our incremental vacuum actually did something #ifdef DEBUG rv = aConn->CreateStatement(NS_LITERAL_CSTRING("PRAGMA freelist_count;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } freePages = 0; rv = state->GetInt32(0, &freePages); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } MOZ_ASSERT(freePages <= kMaxFreePages); #endif return NS_OK; } namespace { // Wrapper around mozIStorageConnection::GetSchemaVersion() that compensates // for hacky downgrade schema version tricks. See the block comments for // kHackyDowngradeSchemaVersion and kHackyPaddingSizePresentVersion. nsresult GetEffectiveSchemaVersion(mozIStorageConnection* aConn, int32_t& schemaVersion) { nsresult rv = aConn->GetSchemaVersion(&schemaVersion); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (schemaVersion == kHackyDowngradeSchemaVersion) { // This is the special case. Check for the existence of the // "response_padding_size" colum in table "entries". // // (pragma_table_info is a table-valued function format variant of // "PRAGMA table_info" supported since SQLite 3.16.0. Firefox 53 shipped // was the first release with this functionality, shipping 3.16.2.) nsCOMPtr stmt; nsresult rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "SELECT name FROM pragma_table_info('entries') WHERE " "name = 'response_padding_size'"), getter_AddRefs(stmt)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // If there are any result rows, then the column is present. bool hasColumn = false; rv = stmt->ExecuteStep(&hasColumn); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (hasColumn) { schemaVersion = kHackyPaddingSizePresentVersion; } } return NS_OK; } #ifdef DEBUG struct Expect { // Expect exact SQL Expect(const char* aName, const char* aType, const char* aSql) : mName(aName), mType(aType), mSql(aSql), mIgnoreSql(false) {} // Ignore SQL Expect(const char* aName, const char* aType) : mName(aName), mType(aType), mIgnoreSql(true) {} const nsCString mName; const nsCString mType; const nsCString mSql; const bool mIgnoreSql; }; #endif nsresult Validate(mozIStorageConnection* aConn) { int32_t schemaVersion; nsresult rv = GetEffectiveSchemaVersion(aConn, schemaVersion); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (NS_WARN_IF(schemaVersion != kLatestSchemaVersion)) { return NS_ERROR_FAILURE; } #ifdef DEBUG // This is the schema we expect the database at the latest version to // contain. Update this list if you add a new table or index. Expect expect[] = { Expect("caches", "table", kTableCaches), Expect("sqlite_sequence", "table"), // auto-gen by sqlite Expect("security_info", "table", kTableSecurityInfo), Expect("security_info_hash_index", "index", kIndexSecurityInfoHash), Expect("entries", "table", kTableEntries), Expect("entries_request_match_index", "index", kIndexEntriesRequest), Expect("request_headers", "table", kTableRequestHeaders), Expect("response_headers", "table", kTableResponseHeaders), Expect("response_headers_name_index", "index", kIndexResponseHeadersName), Expect("response_url_list", "table", kTableResponseUrlList), Expect("storage", "table", kTableStorage), Expect("sqlite_autoindex_storage_1", "index"), // auto-gen by sqlite }; const uint32_t expectLength = sizeof(expect) / sizeof(Expect); // Read the schema from the sqlite_master table and compare. nsCOMPtr state; rv = aConn->CreateStatement( NS_LITERAL_CSTRING("SELECT name, type, sql FROM sqlite_master;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; while (NS_SUCCEEDED(state->ExecuteStep(&hasMoreData)) && hasMoreData) { nsAutoCString name; rv = state->GetUTF8String(0, name); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsAutoCString type; rv = state->GetUTF8String(1, type); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsAutoCString sql; rv = state->GetUTF8String(2, sql); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool foundMatch = false; for (uint32_t i = 0; i < expectLength; ++i) { if (name == expect[i].mName) { if (type != expect[i].mType) { NS_WARNING( nsPrintfCString("Unexpected type for Cache schema entry %s", name.get()) .get()); return NS_ERROR_FAILURE; } if (!expect[i].mIgnoreSql && sql != expect[i].mSql) { NS_WARNING(nsPrintfCString("Unexpected SQL for Cache schema entry %s", name.get()) .get()); return NS_ERROR_FAILURE; } foundMatch = true; break; } } if (NS_WARN_IF(!foundMatch)) { NS_WARNING(nsPrintfCString("Unexpected schema entry %s in Cache database", name.get()) .get()); return NS_ERROR_FAILURE; } } #endif return rv; } // ----- // Schema migration code // ----- typedef nsresult (*MigrationFunc)(mozIStorageConnection*, bool&); struct Migration { constexpr Migration(int32_t aFromVersion, MigrationFunc aFunc) : mFromVersion(aFromVersion), mFunc(aFunc) {} int32_t mFromVersion; MigrationFunc mFunc; }; // Declare migration functions here. Each function should upgrade // the version by a single increment. Don't skip versions. nsresult MigrateFrom15To16(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom16To17(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom17To18(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom18To19(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom19To20(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom20To21(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom21To22(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom22To23(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom23To24(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom24To25(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom25To26(mozIStorageConnection* aConn, bool& aRewriteSchema); nsresult MigrateFrom26To27(mozIStorageConnection* aConn, bool& aRewriteSchema); // Configure migration functions to run for the given starting version. Migration sMigrationList[] = { Migration(15, MigrateFrom15To16), Migration(16, MigrateFrom16To17), Migration(17, MigrateFrom17To18), Migration(18, MigrateFrom18To19), Migration(19, MigrateFrom19To20), Migration(20, MigrateFrom20To21), Migration(21, MigrateFrom21To22), Migration(22, MigrateFrom22To23), Migration(23, MigrateFrom23To24), Migration(24, MigrateFrom24To25), Migration(25, MigrateFrom25To26), Migration(26, MigrateFrom26To27), }; uint32_t sMigrationListLength = sizeof(sMigrationList) / sizeof(Migration); nsresult RewriteEntriesSchema(mozIStorageConnection* aConn) { nsresult rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("PRAGMA writable_schema = ON")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } nsCOMPtr state; rv = aConn->CreateStatement( NS_LITERAL_CSTRING( "UPDATE sqlite_master SET sql=:sql WHERE name='entries'"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->BindUTF8StringByName(NS_LITERAL_CSTRING("sql"), nsDependentCString(kTableEntries)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = state->Execute(); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("PRAGMA writable_schema = OFF")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult Migrate(mozIStorageConnection* aConn) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); int32_t currentVersion = 0; nsresult rv = GetEffectiveSchemaVersion(aConn, currentVersion); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool rewriteSchema = false; while (currentVersion < kLatestSchemaVersion) { // Wiping old databases is handled in DBAction because it requires // making a whole new mozIStorageConnection. Make sure we don't // accidentally get here for one of those old databases. MOZ_DIAGNOSTIC_ASSERT(currentVersion >= kFirstShippedSchemaVersion); for (uint32_t i = 0; i < sMigrationListLength; ++i) { if (sMigrationList[i].mFromVersion == currentVersion) { bool shouldRewrite = false; rv = sMigrationList[i].mFunc(aConn, shouldRewrite); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (shouldRewrite) { rewriteSchema = true; } break; } } #ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED int32_t lastVersion = currentVersion; #endif rv = GetEffectiveSchemaVersion(aConn, currentVersion); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } MOZ_DIAGNOSTIC_ASSERT(currentVersion > lastVersion); } // Don't release assert this since people do sometimes share profiles // across schema versions. Our check in Validate() will catch it. MOZ_ASSERT(currentVersion == kLatestSchemaVersion); if (rewriteSchema) { // Now overwrite the master SQL for the entries table to remove the column // default value. This is also necessary for our Validate() method to // pass on this database. rv = RewriteEntriesSchema(aConn); } return rv; } nsresult MigrateFrom15To16(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // Add the request_redirect column with a default value of "follow". Note, // we only use a default value here because its required by ALTER TABLE and // we need to apply the default "follow" to existing records in the table. // We don't actually want to keep the default in the schema for future // INSERTs. nsresult rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING( "ALTER TABLE entries " "ADD COLUMN request_redirect INTEGER NOT NULL DEFAULT 0")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->SetSchemaVersion(16); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aRewriteSchema = true; return rv; } nsresult MigrateFrom16To17(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // This migration path removes the response_redirected and // response_redirected_url columns from the entries table. sqlite doesn't // support removing a column from a table using ALTER TABLE, so we need to // create a new table without those columns, fill it up with the existing // data, and then drop the original table and rename the new one to the old // one. // Create a new_entries table with the new fields as of version 17. nsresult rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING( "CREATE TABLE new_entries (" "id INTEGER NOT NULL PRIMARY KEY, " "request_method TEXT NOT NULL, " "request_url_no_query TEXT NOT NULL, " "request_url_no_query_hash BLOB NOT NULL, " "request_url_query TEXT NOT NULL, " "request_url_query_hash BLOB NOT NULL, " "request_referrer TEXT NOT NULL, " "request_headers_guard INTEGER NOT NULL, " "request_mode INTEGER NOT NULL, " "request_credentials INTEGER NOT NULL, " "request_contentpolicytype INTEGER NOT NULL, " "request_cache INTEGER NOT NULL, " "request_body_id TEXT NULL, " "response_type INTEGER NOT NULL, " "response_url TEXT NOT NULL, " "response_status INTEGER NOT NULL, " "response_status_text TEXT NOT NULL, " "response_headers_guard INTEGER NOT NULL, " "response_body_id TEXT NULL, " "response_security_info_id INTEGER NULL REFERENCES security_info(id), " "response_principal_info TEXT NOT NULL, " "cache_id INTEGER NOT NULL REFERENCES caches(id) ON DELETE CASCADE, " "request_redirect INTEGER NOT NULL" ")")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Copy all of the data to the newly created table. rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING("INSERT INTO new_entries (" "id, " "request_method, " "request_url_no_query, " "request_url_no_query_hash, " "request_url_query, " "request_url_query_hash, " "request_referrer, " "request_headers_guard, " "request_mode, " "request_credentials, " "request_contentpolicytype, " "request_cache, " "request_redirect, " "request_body_id, " "response_type, " "response_url, " "response_status, " "response_status_text, " "response_headers_guard, " "response_body_id, " "response_security_info_id, " "response_principal_info, " "cache_id " ") SELECT " "id, " "request_method, " "request_url_no_query, " "request_url_no_query_hash, " "request_url_query, " "request_url_query_hash, " "request_referrer, " "request_headers_guard, " "request_mode, " "request_credentials, " "request_contentpolicytype, " "request_cache, " "request_redirect, " "request_body_id, " "response_type, " "response_url, " "response_status, " "response_status_text, " "response_headers_guard, " "response_body_id, " "response_security_info_id, " "response_principal_info, " "cache_id " "FROM entries;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Remove the old table. rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING("DROP TABLE entries;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Rename new_entries to entries. rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("ALTER TABLE new_entries RENAME to entries;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Now, recreate our indices. rv = aConn->ExecuteSimpleSQL(nsDependentCString(kIndexEntriesRequest)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Revalidate the foreign key constraints, and ensure that there are no // violations. nsCOMPtr state; rv = aConn->CreateStatement(NS_LITERAL_CSTRING("PRAGMA foreign_key_check;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (NS_WARN_IF(hasMoreData)) { return NS_ERROR_FAILURE; } rv = aConn->SetSchemaVersion(17); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult MigrateFrom17To18(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // This migration is needed in order to remove "only-if-cached" RequestCache // values from the database. This enum value was removed from the spec in // https://github.com/whatwg/fetch/issues/39 but we unfortunately happily // accepted this value in the Request constructor. // // There is no good value to upgrade this to, so we just stick to "default". static_assert(int(RequestCache::Default) == 0, "This is where the 0 below comes from!"); nsresult rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("UPDATE entries SET request_cache = 0 " "WHERE request_cache = 5;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->SetSchemaVersion(18); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult MigrateFrom18To19(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // This migration is needed in order to update the RequestMode values for // Request objects corresponding to a navigation content policy type to // "navigate". static_assert(int(nsIContentPolicy::TYPE_DOCUMENT) == 6 && int(nsIContentPolicy::TYPE_SUBDOCUMENT) == 7 && int(nsIContentPolicy::TYPE_INTERNAL_FRAME) == 28 && int(nsIContentPolicy::TYPE_INTERNAL_IFRAME) == 29 && int(nsIContentPolicy::TYPE_REFRESH) == 8 && int(RequestMode::Navigate) == 3, "This is where the numbers below come from!"); nsresult rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING( "UPDATE entries SET request_mode = 3 " "WHERE request_contentpolicytype IN (6, 7, 28, 29, 8);")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->SetSchemaVersion(19); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult MigrateFrom19To20(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // Add the request_referrer_policy column with a default value of // "no-referrer-when-downgrade". Note, we only use a default value here // because its required by ALTER TABLE and we need to apply the default // "no-referrer-when-downgrade" to existing records in the table. We don't // actually want to keep the default in the schema for future INSERTs. nsresult rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING( "ALTER TABLE entries " "ADD COLUMN request_referrer_policy INTEGER NOT NULL DEFAULT 2")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->SetSchemaVersion(20); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aRewriteSchema = true; return rv; } nsresult MigrateFrom20To21(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // This migration creates response_url_list table to store response_url and // removes the response_url column from the entries table. // sqlite doesn't support removing a column from a table using ALTER TABLE, // so we need to create a new table without those columns, fill it up with the // existing data, and then drop the original table and rename the new one to // the old one. // Create a new_entries table with the new fields as of version 21. nsresult rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING( "CREATE TABLE new_entries (" "id INTEGER NOT NULL PRIMARY KEY, " "request_method TEXT NOT NULL, " "request_url_no_query TEXT NOT NULL, " "request_url_no_query_hash BLOB NOT NULL, " "request_url_query TEXT NOT NULL, " "request_url_query_hash BLOB NOT NULL, " "request_referrer TEXT NOT NULL, " "request_headers_guard INTEGER NOT NULL, " "request_mode INTEGER NOT NULL, " "request_credentials INTEGER NOT NULL, " "request_contentpolicytype INTEGER NOT NULL, " "request_cache INTEGER NOT NULL, " "request_body_id TEXT NULL, " "response_type INTEGER NOT NULL, " "response_status INTEGER NOT NULL, " "response_status_text TEXT NOT NULL, " "response_headers_guard INTEGER NOT NULL, " "response_body_id TEXT NULL, " "response_security_info_id INTEGER NULL REFERENCES security_info(id), " "response_principal_info TEXT NOT NULL, " "cache_id INTEGER NOT NULL REFERENCES caches(id) ON DELETE CASCADE, " "request_redirect INTEGER NOT NULL, " "request_referrer_policy INTEGER NOT NULL" ")")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Create a response_url_list table with the new fields as of version 21. rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING( "CREATE TABLE response_url_list (" "url TEXT NOT NULL, " "entry_id INTEGER NOT NULL REFERENCES entries(id) ON DELETE CASCADE" ")")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Copy all of the data to the newly created entries table. rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING("INSERT INTO new_entries (" "id, " "request_method, " "request_url_no_query, " "request_url_no_query_hash, " "request_url_query, " "request_url_query_hash, " "request_referrer, " "request_headers_guard, " "request_mode, " "request_credentials, " "request_contentpolicytype, " "request_cache, " "request_redirect, " "request_referrer_policy, " "request_body_id, " "response_type, " "response_status, " "response_status_text, " "response_headers_guard, " "response_body_id, " "response_security_info_id, " "response_principal_info, " "cache_id " ") SELECT " "id, " "request_method, " "request_url_no_query, " "request_url_no_query_hash, " "request_url_query, " "request_url_query_hash, " "request_referrer, " "request_headers_guard, " "request_mode, " "request_credentials, " "request_contentpolicytype, " "request_cache, " "request_redirect, " "request_referrer_policy, " "request_body_id, " "response_type, " "response_status, " "response_status_text, " "response_headers_guard, " "response_body_id, " "response_security_info_id, " "response_principal_info, " "cache_id " "FROM entries;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Copy reponse_url to the newly created response_url_list table. rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("INSERT INTO response_url_list (" "url, " "entry_id " ") SELECT " "response_url, " "id " "FROM entries;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Remove the old table. rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING("DROP TABLE entries;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Rename new_entries to entries. rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("ALTER TABLE new_entries RENAME to entries;")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Now, recreate our indices. rv = aConn->ExecuteSimpleSQL(nsDependentCString(kIndexEntriesRequest)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } // Revalidate the foreign key constraints, and ensure that there are no // violations. nsCOMPtr state; rv = aConn->CreateStatement(NS_LITERAL_CSTRING("PRAGMA foreign_key_check;"), getter_AddRefs(state)); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } bool hasMoreData = false; rv = state->ExecuteStep(&hasMoreData); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (NS_WARN_IF(hasMoreData)) { return NS_ERROR_FAILURE; } rv = aConn->SetSchemaVersion(21); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aRewriteSchema = true; return rv; } nsresult MigrateFrom21To22(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // Add the request_integrity column. nsresult rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("ALTER TABLE entries " "ADD COLUMN request_integrity TEXT NULL")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->SetSchemaVersion(22); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aRewriteSchema = true; return rv; } nsresult MigrateFrom22To23(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // The only change between 22 and 23 was a different snappy compression // format, but it's backwards-compatible. nsresult rv = aConn->SetSchemaVersion(23); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult MigrateFrom23To24(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // Add the request_url_fragment column. nsresult rv = aConn->ExecuteSimpleSQL(NS_LITERAL_CSTRING( "ALTER TABLE entries " "ADD COLUMN request_url_fragment TEXT NOT NULL DEFAULT ''")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->SetSchemaVersion(24); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aRewriteSchema = true; return rv; } nsresult MigrateFrom24To25(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // The only change between 24 and 25 was a new nsIContentPolicy type. nsresult rv = aConn->SetSchemaVersion(25); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } nsresult MigrateFrom25To26(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); // Add the response_padding_size column. // Note: only opaque repsonse should be non-null interger. nsresult rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("ALTER TABLE entries " "ADD COLUMN response_padding_size INTEGER NULL ")); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->ExecuteSimpleSQL( NS_LITERAL_CSTRING("UPDATE entries SET response_padding_size = 0 " "WHERE response_type = 4" // opaque response )); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } rv = aConn->SetSchemaVersion(26); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } aRewriteSchema = true; return rv; } nsresult MigrateFrom26To27(mozIStorageConnection* aConn, bool& aRewriteSchema) { MOZ_ASSERT(!NS_IsMainThread()); MOZ_DIAGNOSTIC_ASSERT(aConn); nsresult rv = aConn->SetSchemaVersion(kHackyDowngradeSchemaVersion); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } return rv; } } // anonymous namespace } // namespace db } // namespace cache } // namespace dom } // namespace mozilla