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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/common/sqlite_utils.h" | |
| 6 | |
| 7 #include <list> | |
| 8 | |
| 9 #include "base/file_path.h" | |
| 10 #include "base/lazy_instance.h" | |
| 11 #include "base/logging.h" | |
| 12 #include "base/stl_util.h" | |
| 13 #include "base/string16.h" | |
| 14 #include "base/synchronization/lock.h" | |
| 15 | |
| 16 // The vanilla error handler implements the common fucntionality for all the | |
| 17 // error handlers. Specialized error handlers are expected to only override | |
| 18 // the Handler() function. | |
| 19 class VanillaSQLErrorHandler : public SQLErrorHandler { | |
| 20 public: | |
| 21 VanillaSQLErrorHandler() : error_(SQLITE_OK) { | |
| 22 } | |
| 23 virtual int GetLastError() const { | |
| 24 return error_; | |
| 25 } | |
| 26 protected: | |
| 27 int error_; | |
| 28 }; | |
| 29 | |
| 30 class DebugSQLErrorHandler: public VanillaSQLErrorHandler { | |
| 31 public: | |
| 32 virtual int HandleError(int error, sqlite3* db) { | |
| 33 error_ = error; | |
| 34 NOTREACHED() << "sqlite error " << error | |
| 35 << " db " << static_cast<void*>(db); | |
| 36 return error; | |
| 37 } | |
| 38 }; | |
| 39 | |
| 40 class ReleaseSQLErrorHandler : public VanillaSQLErrorHandler { | |
| 41 public: | |
| 42 virtual int HandleError(int error, sqlite3* db) { | |
| 43 error_ = error; | |
| 44 // Used to have a CHECK here. Got lots of crashes. | |
| 45 return error; | |
| 46 } | |
| 47 }; | |
| 48 | |
| 49 // The default error handler factory is also in charge of managing the | |
| 50 // lifetime of the error objects. This object is multi-thread safe. | |
| 51 class DefaultSQLErrorHandlerFactory : public SQLErrorHandlerFactory { | |
| 52 public: | |
| 53 ~DefaultSQLErrorHandlerFactory() { | |
| 54 STLDeleteContainerPointers(errors_.begin(), errors_.end()); | |
| 55 } | |
| 56 | |
| 57 virtual SQLErrorHandler* Make() { | |
| 58 SQLErrorHandler* handler; | |
| 59 #ifndef NDEBUG | |
| 60 handler = new DebugSQLErrorHandler; | |
| 61 #else | |
| 62 handler = new ReleaseSQLErrorHandler; | |
| 63 #endif // NDEBUG | |
| 64 AddHandler(handler); | |
| 65 return handler; | |
| 66 } | |
| 67 | |
| 68 private: | |
| 69 void AddHandler(SQLErrorHandler* handler) { | |
| 70 base::AutoLock lock(lock_); | |
| 71 errors_.push_back(handler); | |
| 72 } | |
| 73 | |
| 74 typedef std::list<SQLErrorHandler*> ErrorList; | |
| 75 ErrorList errors_; | |
| 76 base::Lock lock_; | |
| 77 }; | |
| 78 | |
| 79 static base::LazyInstance<DefaultSQLErrorHandlerFactory> | |
| 80 g_default_sql_error_handler_factory(base::LINKER_INITIALIZED); | |
| 81 | |
| 82 SQLErrorHandlerFactory* GetErrorHandlerFactory() { | |
| 83 // TODO(cpu): Testing needs to override the error handler. | |
| 84 // Destruction of DefaultSQLErrorHandlerFactory handled by at_exit manager. | |
| 85 return g_default_sql_error_handler_factory.Pointer(); | |
| 86 } | |
| 87 | |
| 88 namespace sqlite_utils { | |
| 89 | |
| 90 int OpenSqliteDb(const FilePath& filepath, sqlite3** database) { | |
| 91 #if defined(OS_WIN) | |
| 92 // We want the default encoding to always be UTF-8, so we use the | |
| 93 // 8-bit version of open(). | |
| 94 return sqlite3_open(WideToUTF8(filepath.value()).c_str(), database); | |
| 95 #elif defined(OS_POSIX) | |
| 96 return sqlite3_open(filepath.value().c_str(), database); | |
| 97 #endif | |
| 98 } | |
| 99 | |
| 100 bool DoesSqliteTableExist(sqlite3* db, | |
| 101 const char* db_name, | |
| 102 const char* table_name) { | |
| 103 // sqlite doesn't allow binding parameters as table names, so we have to | |
| 104 // manually construct the sql | |
| 105 std::string sql("SELECT name FROM "); | |
| 106 if (db_name && db_name[0]) { | |
| 107 sql.append(db_name); | |
| 108 sql.push_back('.'); | |
| 109 } | |
| 110 sql.append("sqlite_master WHERE type='table' AND name=?"); | |
| 111 | |
| 112 SQLStatement statement; | |
| 113 if (statement.prepare(db, sql.c_str()) != SQLITE_OK) | |
| 114 return false; | |
| 115 | |
| 116 if (statement.bind_text(0, table_name) != SQLITE_OK) | |
| 117 return false; | |
| 118 | |
| 119 // we only care about if this matched a row, not the actual data | |
| 120 return sqlite3_step(statement.get()) == SQLITE_ROW; | |
| 121 } | |
| 122 | |
| 123 bool DoesSqliteColumnExist(sqlite3* db, | |
| 124 const char* database_name, | |
| 125 const char* table_name, | |
| 126 const char* column_name, | |
| 127 const char* column_type) { | |
| 128 SQLStatement s; | |
| 129 std::string sql; | |
| 130 sql.append("PRAGMA "); | |
| 131 if (database_name && database_name[0]) { | |
| 132 // optional database name specified | |
| 133 sql.append(database_name); | |
| 134 sql.push_back('.'); | |
| 135 } | |
| 136 sql.append("TABLE_INFO("); | |
| 137 sql.append(table_name); | |
| 138 sql.append(")"); | |
| 139 | |
| 140 if (s.prepare(db, sql.c_str()) != SQLITE_OK) | |
| 141 return false; | |
| 142 | |
| 143 while (s.step() == SQLITE_ROW) { | |
| 144 if (!s.column_string(1).compare(column_name)) { | |
| 145 if (column_type && column_type[0]) | |
| 146 return !s.column_string(2).compare(column_type); | |
| 147 return true; | |
| 148 } | |
| 149 } | |
| 150 return false; | |
| 151 } | |
| 152 | |
| 153 bool DoesSqliteTableHaveRow(sqlite3* db, const char* table_name) { | |
| 154 SQLStatement s; | |
| 155 std::string b; | |
| 156 b.append("SELECT * FROM "); | |
| 157 b.append(table_name); | |
| 158 | |
| 159 if (s.prepare(db, b.c_str()) != SQLITE_OK) | |
| 160 return false; | |
| 161 | |
| 162 return s.step() == SQLITE_ROW; | |
| 163 } | |
| 164 | |
| 165 } // namespace sqlite_utils | |
| 166 | |
| 167 SQLTransaction::SQLTransaction(sqlite3* db) : db_(db), began_(false) { | |
| 168 } | |
| 169 | |
| 170 SQLTransaction::~SQLTransaction() { | |
| 171 if (began_) { | |
| 172 Rollback(); | |
| 173 } | |
| 174 } | |
| 175 | |
| 176 int SQLTransaction::BeginCommand(const char* command) { | |
| 177 int rv = SQLITE_ERROR; | |
| 178 if (!began_ && db_) { | |
| 179 rv = sqlite3_exec(db_, command, NULL, NULL, NULL); | |
| 180 began_ = (rv == SQLITE_OK); | |
| 181 } | |
| 182 return rv; | |
| 183 } | |
| 184 | |
| 185 int SQLTransaction::EndCommand(const char* command) { | |
| 186 int rv = SQLITE_ERROR; | |
| 187 if (began_ && db_) { | |
| 188 rv = sqlite3_exec(db_, command, NULL, NULL, NULL); | |
| 189 began_ = (rv != SQLITE_OK); | |
| 190 } | |
| 191 return rv; | |
| 192 } | |
| 193 | |
| 194 SQLNestedTransactionSite::~SQLNestedTransactionSite() { | |
| 195 DCHECK(!top_transaction_); | |
| 196 } | |
| 197 | |
| 198 void SQLNestedTransactionSite::SetTopTransaction(SQLNestedTransaction* top) { | |
| 199 DCHECK(!top || !top_transaction_); | |
| 200 top_transaction_ = top; | |
| 201 } | |
| 202 | |
| 203 SQLNestedTransaction::SQLNestedTransaction(SQLNestedTransactionSite* site) | |
| 204 : SQLTransaction(site->GetSqlite3DB()), | |
| 205 needs_rollback_(false), | |
| 206 site_(site) { | |
| 207 DCHECK(site); | |
| 208 if (site->GetTopTransaction() == NULL) { | |
| 209 site->SetTopTransaction(this); | |
| 210 } | |
| 211 } | |
| 212 | |
| 213 SQLNestedTransaction::~SQLNestedTransaction() { | |
| 214 if (began_) { | |
| 215 Rollback(); | |
| 216 } | |
| 217 if (site_->GetTopTransaction() == this) { | |
| 218 site_->SetTopTransaction(NULL); | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 int SQLNestedTransaction::BeginCommand(const char* command) { | |
| 223 DCHECK(db_); | |
| 224 DCHECK(site_ && site_->GetTopTransaction()); | |
| 225 if (!db_ || began_) { | |
| 226 return SQLITE_ERROR; | |
| 227 } | |
| 228 if (site_->GetTopTransaction() == this) { | |
| 229 int rv = sqlite3_exec(db_, command, NULL, NULL, NULL); | |
| 230 began_ = (rv == SQLITE_OK); | |
| 231 if (began_) { | |
| 232 site_->OnBegin(); | |
| 233 } | |
| 234 return rv; | |
| 235 } else { | |
| 236 if (site_->GetTopTransaction()->needs_rollback_) { | |
| 237 return SQLITE_ERROR; | |
| 238 } | |
| 239 began_ = true; | |
| 240 return SQLITE_OK; | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 int SQLNestedTransaction::EndCommand(const char* command) { | |
| 245 DCHECK(db_); | |
| 246 DCHECK(site_ && site_->GetTopTransaction()); | |
| 247 if (!db_ || !began_) { | |
| 248 return SQLITE_ERROR; | |
| 249 } | |
| 250 if (site_->GetTopTransaction() == this) { | |
| 251 if (needs_rollback_) { | |
| 252 sqlite3_exec(db_, "ROLLBACK", NULL, NULL, NULL); | |
| 253 began_ = false; // reset so we don't try to rollback or call | |
| 254 // OnRollback() again | |
| 255 site_->OnRollback(); | |
| 256 return SQLITE_ERROR; | |
| 257 } else { | |
| 258 int rv = sqlite3_exec(db_, command, NULL, NULL, NULL); | |
| 259 began_ = (rv != SQLITE_OK); | |
| 260 if (strcmp(command, "ROLLBACK") == 0) { | |
| 261 began_ = false; // reset so we don't try to rollbck or call | |
| 262 // OnRollback() again | |
| 263 site_->OnRollback(); | |
| 264 } else { | |
| 265 DCHECK(strcmp(command, "COMMIT") == 0); | |
| 266 if (rv == SQLITE_OK) { | |
| 267 site_->OnCommit(); | |
| 268 } | |
| 269 } | |
| 270 return rv; | |
| 271 } | |
| 272 } else { | |
| 273 if (strcmp(command, "ROLLBACK") == 0) { | |
| 274 site_->GetTopTransaction()->needs_rollback_ = true; | |
| 275 } | |
| 276 began_ = false; | |
| 277 return SQLITE_OK; | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 int SQLStatement::prepare(sqlite3* db, const char* sql, int sql_len) { | |
| 282 DCHECK(!stmt_); | |
| 283 int rv = sqlite3_prepare_v2(db, sql, sql_len, &stmt_, NULL); | |
| 284 if (rv != SQLITE_OK) { | |
| 285 SQLErrorHandler* error_handler = GetErrorHandlerFactory()->Make(); | |
| 286 return error_handler->HandleError(rv, db); | |
| 287 } | |
| 288 return rv; | |
| 289 } | |
| 290 | |
| 291 int SQLStatement::step() { | |
| 292 DCHECK(stmt_); | |
| 293 int status = sqlite3_step(stmt_); | |
| 294 if ((status == SQLITE_ROW) || (status == SQLITE_DONE)) | |
| 295 return status; | |
| 296 // We got a problem. | |
| 297 SQLErrorHandler* error_handler = GetErrorHandlerFactory()->Make(); | |
| 298 return error_handler->HandleError(status, db_handle()); | |
| 299 } | |
| 300 | |
| 301 int SQLStatement::reset() { | |
| 302 DCHECK(stmt_); | |
| 303 return sqlite3_reset(stmt_); | |
| 304 } | |
| 305 | |
| 306 sqlite_int64 SQLStatement::last_insert_rowid() { | |
| 307 DCHECK(stmt_); | |
| 308 return sqlite3_last_insert_rowid(db_handle()); | |
| 309 } | |
| 310 | |
| 311 int SQLStatement::changes() { | |
| 312 DCHECK(stmt_); | |
| 313 return sqlite3_changes(db_handle()); | |
| 314 } | |
| 315 | |
| 316 sqlite3* SQLStatement::db_handle() { | |
| 317 DCHECK(stmt_); | |
| 318 return sqlite3_db_handle(stmt_); | |
| 319 } | |
| 320 | |
| 321 int SQLStatement::bind_parameter_count() { | |
| 322 DCHECK(stmt_); | |
| 323 return sqlite3_bind_parameter_count(stmt_); | |
| 324 } | |
| 325 | |
| 326 int SQLStatement::bind_blob(int index, std::vector<unsigned char>* blob) { | |
| 327 if (blob) { | |
| 328 const void* value = blob->empty() ? NULL : &(*blob)[0]; | |
| 329 int len = static_cast<int>(blob->size()); | |
| 330 return bind_blob(index, value, len); | |
| 331 } else { | |
| 332 return bind_null(index); | |
| 333 } | |
| 334 } | |
| 335 | |
| 336 int SQLStatement::bind_blob(int index, const void* value, int value_len) { | |
| 337 return bind_blob(index, value, value_len, SQLITE_TRANSIENT); | |
| 338 } | |
| 339 | |
| 340 int SQLStatement::bind_blob(int index, const void* value, int value_len, | |
| 341 Function dtor) { | |
| 342 DCHECK(stmt_); | |
| 343 return sqlite3_bind_blob(stmt_, index + 1, value, value_len, dtor); | |
| 344 } | |
| 345 | |
| 346 int SQLStatement::bind_double(int index, double value) { | |
| 347 DCHECK(stmt_); | |
| 348 return sqlite3_bind_double(stmt_, index + 1, value); | |
| 349 } | |
| 350 | |
| 351 int SQLStatement::bind_bool(int index, bool value) { | |
| 352 DCHECK(stmt_); | |
| 353 return sqlite3_bind_int(stmt_, index + 1, value); | |
| 354 } | |
| 355 | |
| 356 int SQLStatement::bind_int(int index, int value) { | |
| 357 DCHECK(stmt_); | |
| 358 return sqlite3_bind_int(stmt_, index + 1, value); | |
| 359 } | |
| 360 | |
| 361 int SQLStatement::bind_int64(int index, sqlite_int64 value) { | |
| 362 DCHECK(stmt_); | |
| 363 return sqlite3_bind_int64(stmt_, index + 1, value); | |
| 364 } | |
| 365 | |
| 366 int SQLStatement::bind_null(int index) { | |
| 367 DCHECK(stmt_); | |
| 368 return sqlite3_bind_null(stmt_, index + 1); | |
| 369 } | |
| 370 | |
| 371 int SQLStatement::bind_text(int index, const char* value, int value_len, | |
| 372 Function dtor) { | |
| 373 DCHECK(stmt_); | |
| 374 return sqlite3_bind_text(stmt_, index + 1, value, value_len, dtor); | |
| 375 } | |
| 376 | |
| 377 int SQLStatement::bind_text16(int index, const char16* value, int value_len, | |
| 378 Function dtor) { | |
| 379 DCHECK(stmt_); | |
| 380 value_len *= sizeof(char16); | |
| 381 return sqlite3_bind_text16(stmt_, index + 1, value, value_len, dtor); | |
| 382 } | |
| 383 | |
| 384 int SQLStatement::bind_value(int index, const sqlite3_value* value) { | |
| 385 DCHECK(stmt_); | |
| 386 return sqlite3_bind_value(stmt_, index + 1, value); | |
| 387 } | |
| 388 | |
| 389 int SQLStatement::column_count() { | |
| 390 DCHECK(stmt_); | |
| 391 return sqlite3_column_count(stmt_); | |
| 392 } | |
| 393 | |
| 394 int SQLStatement::column_type(int index) { | |
| 395 DCHECK(stmt_); | |
| 396 return sqlite3_column_type(stmt_, index); | |
| 397 } | |
| 398 | |
| 399 const void* SQLStatement::column_blob(int index) { | |
| 400 DCHECK(stmt_); | |
| 401 return sqlite3_column_blob(stmt_, index); | |
| 402 } | |
| 403 | |
| 404 bool SQLStatement::column_blob_as_vector(int index, | |
| 405 std::vector<unsigned char>* blob) { | |
| 406 DCHECK(stmt_); | |
| 407 const void* p = column_blob(index); | |
| 408 size_t len = column_bytes(index); | |
| 409 blob->resize(len); | |
| 410 if (blob->size() != len) { | |
| 411 return false; | |
| 412 } | |
| 413 if (len > 0) | |
| 414 memcpy(&(blob->front()), p, len); | |
| 415 return true; | |
| 416 } | |
| 417 | |
| 418 bool SQLStatement::column_blob_as_string(int index, std::string* blob) { | |
| 419 DCHECK(stmt_); | |
| 420 const void* p = column_blob(index); | |
| 421 size_t len = column_bytes(index); | |
| 422 blob->resize(len); | |
| 423 if (blob->size() != len) { | |
| 424 return false; | |
| 425 } | |
| 426 blob->assign(reinterpret_cast<const char*>(p), len); | |
| 427 return true; | |
| 428 } | |
| 429 | |
| 430 int SQLStatement::column_bytes(int index) { | |
| 431 DCHECK(stmt_); | |
| 432 return sqlite3_column_bytes(stmt_, index); | |
| 433 } | |
| 434 | |
| 435 int SQLStatement::column_bytes16(int index) { | |
| 436 DCHECK(stmt_); | |
| 437 return sqlite3_column_bytes16(stmt_, index); | |
| 438 } | |
| 439 | |
| 440 double SQLStatement::column_double(int index) { | |
| 441 DCHECK(stmt_); | |
| 442 return sqlite3_column_double(stmt_, index); | |
| 443 } | |
| 444 | |
| 445 bool SQLStatement::column_bool(int index) { | |
| 446 DCHECK(stmt_); | |
| 447 return sqlite3_column_int(stmt_, index) ? true : false; | |
| 448 } | |
| 449 | |
| 450 int SQLStatement::column_int(int index) { | |
| 451 DCHECK(stmt_); | |
| 452 return sqlite3_column_int(stmt_, index); | |
| 453 } | |
| 454 | |
| 455 sqlite_int64 SQLStatement::column_int64(int index) { | |
| 456 DCHECK(stmt_); | |
| 457 return sqlite3_column_int64(stmt_, index); | |
| 458 } | |
| 459 | |
| 460 const char* SQLStatement::column_text(int index) { | |
| 461 DCHECK(stmt_); | |
| 462 return reinterpret_cast<const char*>(sqlite3_column_text(stmt_, index)); | |
| 463 } | |
| 464 | |
| 465 bool SQLStatement::column_string(int index, std::string* str) { | |
| 466 DCHECK(stmt_); | |
| 467 DCHECK(str); | |
| 468 const char* s = column_text(index); | |
| 469 str->assign(s ? s : std::string()); | |
| 470 return s != NULL; | |
| 471 } | |
| 472 | |
| 473 std::string SQLStatement::column_string(int index) { | |
| 474 std::string str; | |
| 475 column_string(index, &str); | |
| 476 return str; | |
| 477 } | |
| 478 | |
| 479 const char16* SQLStatement::column_text16(int index) { | |
| 480 DCHECK(stmt_); | |
| 481 return static_cast<const char16*>(sqlite3_column_text16(stmt_, index)); | |
| 482 } | |
| 483 | |
| 484 bool SQLStatement::column_string16(int index, string16* str) { | |
| 485 DCHECK(stmt_); | |
| 486 DCHECK(str); | |
| 487 const char* s = column_text(index); | |
| 488 str->assign(s ? UTF8ToUTF16(s) : string16()); | |
| 489 return (s != NULL); | |
| 490 } | |
| 491 | |
| 492 string16 SQLStatement::column_string16(int index) { | |
| 493 string16 str; | |
| 494 column_string16(index, &str); | |
| 495 return str; | |
| 496 } | |
| 497 | |
| 498 bool SQLStatement::column_wstring(int index, std::wstring* str) { | |
| 499 DCHECK(stmt_); | |
| 500 DCHECK(str); | |
| 501 const char* s = column_text(index); | |
| 502 str->assign(s ? UTF8ToWide(s) : std::wstring()); | |
| 503 return (s != NULL); | |
| 504 } | |
| 505 | |
| 506 std::wstring SQLStatement::column_wstring(int index) { | |
| 507 std::wstring wstr; | |
| 508 column_wstring(index, &wstr); | |
| 509 return wstr; | |
| 510 } | |
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Chromium Code Reviews
Issue 7550059:
Move sqlite_utils.* to sync/util/ directory. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src