int sqlite3CodecAttach(sqlite3 *db, int nDb, const void *zKey, int nKey) { BOTANSQLITE_TRACE("sqlite3CodecAttach"); void *pCodec = NULL; if (!zKey || nKey <= 0) { Pager *pager = sqlite3BtreePager(db->aDb[nDb].pBt); // No key specified, could mean either use the main db's encryption or no encryption if (nDb != 0 && nKey < 0) { // Is an attached database, therefore use the key of main database, if main database is encrypted void *pMainCodec = sqlite3PagerGetCodec(sqlite3BtreePager(db->aDb[0].pBt)); if (pMainCodec) { pCodec = InitializeFromOtherCodec(pMainCodec, db); sqlite3PagerSetCodec( pager, Codec, CodecSizeChange, PagerFreeCodec, pCodec); } } else { // No encryption requested sqlite3PagerSetCodec(pager, NULL, NULL, NULL, NULL); } } else { // Key specified, setup encryption key for database pCodec = InitializeNewCodec(db); assert(nKey >= 0); SetWriteKey(pCodec, (const char*) zKey, (size_t) nKey); if (HandleError(pCodec)) { DeleteCodec(pCodec); return SQLITE_ERROR; } SetReadIsWrite(pCodec); sqlite3PagerSetCodec( sqlite3BtreePager(db->aDb[nDb].pBt), Codec, CodecSizeChange, PagerFreeCodec, pCodec); } if (HandleError(pCodec)) return SQLITE_ERROR; return SQLITE_OK; }
int sqlite3CodecAttach(sqlite3 *db, int nDb, const void *zKey, int nKey) { void *pCodec; if (zKey == NULL || nKey <= 0) { // No key specified, could mean either use the main db's encryption or no encryption if (nDb != 0 && nKey < 0) { //Is an attached database, therefore use the key of main database, if main database is encrypted void *pMainCodec = sqlite3PagerGetCodec(sqlite3BtreePager(db->aDb[0].pBt)); if (pMainCodec != NULL) { pCodec = InitializeFromOtherCodec(pMainCodec, db); sqlite3PagerSetCodec(sqlite3BtreePager(db->aDb[nDb].pBt), sqlite3Codec, sqlite3CodecSizeChange, sqlite3PagerFreeCodec, pCodec); } } } else { // Key specified, setup encryption key for database pCodec = InitializeNewCodec(db); GenerateWriteKey(pCodec, (const char*) zKey, nKey); SetReadIsWrite(pCodec); sqlite3PagerSetCodec(sqlite3BtreePager(db->aDb[nDb].pBt), sqlite3Codec, sqlite3CodecSizeChange, sqlite3PagerFreeCodec, pCodec); } if (HandleError(pCodec)) return SQLITE_ERROR; return SQLITE_OK; }