Mercurial > hg > orthanc-databases
annotate Framework/MySQL/MySQLStatement.cpp @ 163:4d32c9c8d6c0
Added support for TLS connections
| author | Alain Mazy <alain@mazy.be> |
|---|---|
| date | Mon, 13 Jul 2020 11:59:29 +0200 |
| parents | fc13b4e8f888 |
| children | c17f219cec42 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU Affero General Public License | |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 11 * | |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "MySQLStatement.h" | |
| 23 | |
| 24 #include "../Common/BinaryStringValue.h" | |
| 25 #include "../Common/FileValue.h" | |
| 26 #include "../Common/Integer64Value.h" | |
| 27 #include "../Common/NullValue.h" | |
| 28 #include "../Common/Utf8StringValue.h" | |
| 29 #include "MySQLResult.h" | |
| 30 | |
|
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31 #include <Compatibility.h> // For std::unique_ptr<> |
| 152 | 32 #include <Logging.h> |
| 33 #include <OrthancException.h> | |
| 0 | 34 |
| 35 #include <list> | |
| 36 #include <memory> | |
| 37 | |
| 38 namespace OrthancDatabases | |
| 39 { | |
| 40 class MySQLStatement::ResultField : public boost::noncopyable | |
| 41 { | |
| 42 private: | |
| 43 IValue* CreateIntegerValue(MYSQL_BIND& bind) const | |
| 44 { | |
| 45 if (length_ != buffer_.size()) | |
| 46 { | |
| 47 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 48 } | |
| 49 | |
| 50 switch (mysqlType_) | |
| 51 { | |
| 52 case MYSQL_TYPE_TINY: | |
| 53 if (bind.is_unsigned) | |
| 54 { | |
| 55 return new Integer64Value(*reinterpret_cast<const uint8_t*>(&buffer_[0])); | |
| 56 } | |
| 57 else | |
| 58 { | |
| 59 return new Integer64Value(*reinterpret_cast<const int8_t*>(&buffer_[0])); | |
| 60 } | |
| 61 | |
| 62 case MYSQL_TYPE_SHORT: | |
| 63 if (bind.is_unsigned) | |
| 64 { | |
| 65 return new Integer64Value(*reinterpret_cast<const uint16_t*>(&buffer_[0])); | |
| 66 } | |
| 67 else | |
| 68 { | |
| 69 return new Integer64Value(*reinterpret_cast<const int16_t*>(&buffer_[0])); | |
| 70 } | |
| 71 | |
| 72 break; | |
| 73 | |
| 74 case MYSQL_TYPE_LONG: | |
| 75 if (bind.is_unsigned) | |
| 76 { | |
| 77 return new Integer64Value(*reinterpret_cast<const uint32_t*>(&buffer_[0])); | |
| 78 } | |
| 79 else | |
| 80 { | |
| 81 return new Integer64Value(*reinterpret_cast<const int32_t*>(&buffer_[0])); | |
| 82 } | |
| 83 | |
| 84 break; | |
| 85 | |
| 86 case MYSQL_TYPE_LONGLONG: | |
| 87 if (bind.is_unsigned) | |
| 88 { | |
| 89 uint64_t value = *reinterpret_cast<const uint64_t*>(&buffer_[0]); | |
| 90 if (static_cast<uint64_t>(static_cast<int64_t>(value)) != value) | |
| 91 { | |
| 92 LOG(WARNING) << "Overflow in a 64 bit integer"; | |
| 93 } | |
| 94 | |
| 95 return new Integer64Value(static_cast<int64_t>(value)); | |
| 96 } | |
| 97 else | |
| 98 { | |
| 99 return new Integer64Value(*reinterpret_cast<const int64_t*>(&buffer_[0])); | |
| 100 } | |
| 101 | |
| 102 break; | |
| 103 | |
| 104 default: | |
| 105 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 | |
| 110 enum enum_field_types mysqlType_; | |
| 111 ValueType orthancType_; | |
| 112 std::string buffer_; | |
| 113 my_bool isNull_; | |
| 114 my_bool isError_; | |
| 115 unsigned long length_; | |
| 116 | |
| 117 | |
| 118 public: | |
| 119 ResultField(const MYSQL_FIELD& field) : | |
| 120 mysqlType_(field.type) | |
| 121 { | |
| 122 // https://dev.mysql.com/doc/refman/8.0/en/c-api-data-structures.html | |
| 123 // https://dev.mysql.com/doc/refman/8.0/en/mysql-stmt-fetch.html => size of "buffer_" | |
| 124 switch (field.type) | |
| 125 { | |
| 126 case MYSQL_TYPE_TINY: | |
| 127 orthancType_ = ValueType_Integer64; | |
| 128 buffer_.resize(1); | |
| 129 break; | |
| 130 | |
| 131 case MYSQL_TYPE_SHORT: | |
| 132 orthancType_ = ValueType_Integer64; | |
| 133 buffer_.resize(2); | |
| 134 break; | |
| 135 | |
| 136 case MYSQL_TYPE_LONG: | |
| 137 orthancType_ = ValueType_Integer64; | |
| 138 buffer_.resize(4); | |
| 139 break; | |
| 140 | |
| 141 case MYSQL_TYPE_LONGLONG: | |
| 142 orthancType_ = ValueType_Integer64; | |
| 143 buffer_.resize(8); | |
| 144 break; | |
| 145 | |
| 146 case MYSQL_TYPE_STRING: | |
| 147 case MYSQL_TYPE_VAR_STRING: | |
| 148 case MYSQL_TYPE_BLOB: | |
| 149 // https://medium.com/@adamhooper/in-mysql-never-use-utf8-use-utf8mb4-11761243e434 | |
| 150 switch (field.charsetnr) | |
| 151 { | |
| 152 case 45: // utf8mb4_general_ci | |
| 153 case 46: // utf8mb4_bin | |
| 154 case 224: // utf8mb4_unicode_ci => RECOMMENDED collation | |
|
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155 case 255: // utf8mb4_0900_ai_ci => necessary for MySQL 8.0 |
| 0 | 156 // https://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci |
| 157 orthancType_ = ValueType_Utf8String; | |
| 158 break; | |
| 159 | |
| 160 case 63: | |
| 161 orthancType_ = ValueType_BinaryString; | |
| 162 break; | |
| 163 | |
| 164 default: | |
| 165 LOG(ERROR) << "Unsupported MySQL charset: " << field.charsetnr; | |
| 166 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 167 } | |
| 168 | |
| 169 if (field.max_length > 0) | |
| 170 { | |
| 171 buffer_.resize(field.max_length); | |
| 172 } | |
| 173 | |
| 174 break; | |
| 175 | |
| 176 default: | |
| 177 LOG(ERROR) << "MYSQL_TYPE not implemented: " << field.type; | |
| 178 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 179 } | |
| 180 } | |
| 181 | |
| 182 enum enum_field_types GetMysqlType() const | |
| 183 { | |
| 184 return mysqlType_; | |
| 185 } | |
| 186 | |
| 187 ValueType GetOrthancType() const | |
| 188 { | |
| 189 return orthancType_; | |
| 190 } | |
| 191 | |
| 192 void PrepareBind(MYSQL_BIND& bind) | |
| 193 { | |
| 194 memset(&bind, 0, sizeof(bind)); | |
| 195 | |
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196 isNull_ = false; |
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197 isError_ = false; |
| 0 | 198 length_ = 0; |
| 199 | |
| 200 bind.buffer_length = buffer_.size(); | |
| 201 bind.buffer_type = mysqlType_; | |
| 202 bind.is_null = &isNull_; | |
| 203 bind.length = &length_; | |
| 204 | |
| 205 if (buffer_.empty()) | |
| 206 { | |
| 207 // Only fetches the actual size of the field (*): | |
| 208 // mysql_stmt_fetch_column() must be invoked afterward | |
| 209 bind.buffer = 0; | |
| 210 } | |
| 211 else | |
| 212 { | |
| 213 bind.buffer = &buffer_[0]; | |
| 214 bind.error = &isError_; | |
| 215 } | |
| 216 } | |
| 217 | |
| 218 | |
| 219 IValue* FetchValue(MySQLDatabase& database, | |
| 220 MYSQL_STMT& statement, | |
| 221 MYSQL_BIND& bind, | |
| 222 unsigned int column) const | |
| 223 { | |
| 224 if (isError_) | |
| 225 { | |
| 226 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); | |
| 227 } | |
| 228 else if (isNull_) | |
| 229 { | |
| 230 return new NullValue; | |
| 231 } | |
| 232 else if (orthancType_ == ValueType_Integer64) | |
| 233 { | |
| 234 return CreateIntegerValue(bind); | |
| 235 } | |
| 236 else if (orthancType_ == ValueType_Utf8String || | |
| 237 orthancType_ == ValueType_BinaryString) | |
| 238 { | |
| 239 std::string tmp; | |
| 240 tmp.resize(length_); | |
| 241 | |
| 242 if (!tmp.empty()) | |
| 243 { | |
| 244 if (buffer_.empty()) | |
| 245 { | |
| 246 bind.buffer = &tmp[0]; | |
| 247 bind.buffer_length = tmp.size(); | |
| 248 | |
| 249 database.CheckErrorCode(mysql_stmt_fetch_column(&statement, &bind, column, 0)); | |
| 250 } | |
| 251 else if (tmp.size() <= buffer_.size()) | |
| 252 { | |
| 253 memcpy(&tmp[0], &buffer_[0], length_); | |
| 254 } | |
| 255 else | |
| 256 { | |
| 257 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 258 } | |
| 259 } | |
| 260 | |
| 261 if (orthancType_ == ValueType_Utf8String) | |
| 262 { | |
| 263 return new Utf8StringValue(tmp); | |
| 264 } | |
| 265 else | |
| 266 { | |
| 267 return new BinaryStringValue(tmp); | |
| 268 } | |
| 269 } | |
| 270 else | |
| 271 { | |
| 272 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 273 } | |
| 274 } | |
| 275 }; | |
| 276 | |
| 277 | |
| 278 class MySQLStatement::ResultMetadata : public boost::noncopyable | |
| 279 { | |
| 280 private: | |
| 281 MYSQL_RES* metadata_; | |
| 282 | |
| 283 public: | |
| 284 ResultMetadata(MySQLDatabase& db, | |
| 285 MySQLStatement& statement) : | |
| 286 metadata_(NULL) | |
| 287 { | |
| 288 metadata_ = mysql_stmt_result_metadata(statement.GetObject()); | |
| 289 } | |
| 290 | |
| 291 ~ResultMetadata() | |
| 292 { | |
| 293 if (metadata_ != NULL) | |
| 294 { | |
| 295 mysql_free_result(metadata_); | |
| 296 } | |
| 297 } | |
| 298 | |
| 299 bool HasFields() const | |
| 300 { | |
| 301 return metadata_ != NULL; | |
| 302 } | |
| 303 | |
| 304 size_t GetFieldsCount() | |
| 305 { | |
| 306 if (HasFields()) | |
| 307 { | |
| 308 return mysql_num_fields(metadata_); | |
| 309 } | |
| 310 else | |
| 311 { | |
| 312 return 0; | |
| 313 } | |
| 314 } | |
| 315 | |
| 316 MYSQL_RES* GetObject() | |
| 317 { | |
| 318 return metadata_; | |
| 319 } | |
| 320 }; | |
| 321 | |
| 322 | |
| 323 void MySQLStatement::Close() | |
| 324 { | |
| 325 for (size_t i = 0; i < result_.size(); i++) | |
| 326 { | |
| 327 if (result_[i] != NULL) | |
| 328 { | |
| 329 delete result_[i]; | |
| 330 } | |
| 331 } | |
| 332 | |
| 333 if (statement_ != NULL) | |
| 334 { | |
| 335 mysql_stmt_close(statement_); | |
| 336 statement_ = NULL; | |
| 337 } | |
| 338 } | |
| 339 | |
| 340 | |
| 341 MySQLStatement::MySQLStatement(MySQLDatabase& db, | |
| 342 const Query& query) : | |
| 343 db_(db), | |
| 344 readOnly_(query.IsReadOnly()), | |
| 345 statement_(NULL), | |
| 346 formatter_(Dialect_MySQL) | |
| 347 { | |
| 348 std::string sql; | |
| 349 query.Format(sql, formatter_); | |
| 350 | |
| 351 statement_ = mysql_stmt_init(db.GetObject()); | |
| 352 if (statement_ == NULL) | |
| 353 { | |
| 354 db.LogError(); | |
| 355 throw Orthanc::OrthancException(Orthanc::ErrorCode_Database); | |
| 356 } | |
| 357 | |
| 162 | 358 VLOG(1) << "Preparing MySQL statement: " << sql; |
| 0 | 359 |
| 360 db_.CheckErrorCode(mysql_stmt_prepare(statement_, sql.c_str(), sql.size())); | |
| 361 | |
| 362 if (mysql_stmt_param_count(statement_) != formatter_.GetParametersCount()) | |
| 363 { | |
| 364 Close(); | |
| 365 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 366 } | |
| 367 | |
| 368 try | |
| 369 { | |
| 370 ResultMetadata result(db, *this); | |
| 371 | |
| 372 if (result.HasFields()) | |
| 373 { | |
| 374 MYSQL_FIELD *field; | |
| 375 while ((field = mysql_fetch_field(result.GetObject()))) | |
| 376 { | |
| 377 result_.push_back(new ResultField(*field)); | |
| 378 } | |
| 379 } | |
| 380 | |
| 381 if (result_.size() != result.GetFieldsCount()) | |
| 382 { | |
| 383 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 384 } | |
| 385 } | |
| 386 catch (Orthanc::OrthancException&) | |
| 387 { | |
| 388 Close(); | |
| 389 throw; | |
| 390 } | |
| 391 | |
| 392 if (query.IsReadOnly()) | |
| 393 { | |
| 394 unsigned long type = (unsigned long) CURSOR_TYPE_READ_ONLY; | |
| 395 mysql_stmt_attr_set(statement_, STMT_ATTR_CURSOR_TYPE, (void*) &type); | |
| 396 } | |
| 397 } | |
| 398 | |
| 399 | |
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400 MySQLStatement::~MySQLStatement() |
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401 { |
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402 try |
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403 { |
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404 Close(); |
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405 } |
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406 catch (Orthanc::OrthancException&) |
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407 { |
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408 // Ignore possible exceptions due to connection loss |
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409 } |
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410 } |
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411 |
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412 |
| 0 | 413 MYSQL_STMT* MySQLStatement::GetObject() |
| 414 { | |
| 415 if (statement_ == NULL) | |
| 416 { | |
| 417 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
| 418 } | |
| 419 else | |
| 420 { | |
| 421 return statement_; | |
| 422 } | |
| 423 } | |
| 424 | |
| 425 | |
| 426 IValue* MySQLStatement::FetchResultField(size_t i) | |
| 427 { | |
| 428 if (i >= result_.size()) | |
| 429 { | |
| 430 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 431 } | |
| 432 else | |
| 433 { | |
| 434 assert(result_[i] != NULL); | |
| 435 return result_[i]->FetchValue(db_, *statement_, outputs_[i], i); | |
| 436 } | |
| 437 } | |
| 438 | |
| 439 | |
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440 IResult* MySQLStatement::Execute(ITransaction& transaction, |
| 0 | 441 const Dictionary& parameters) |
| 442 { | |
| 443 std::list<int> intParameters; | |
| 444 std::list<long long int> int64Parameters; | |
| 445 | |
| 446 std::vector<MYSQL_BIND> inputs(formatter_.GetParametersCount()); | |
| 447 | |
| 448 for (size_t i = 0; i < inputs.size(); i++) | |
| 449 { | |
| 450 memset(&inputs[i], 0, sizeof(MYSQL_BIND)); | |
| 451 | |
| 452 const std::string& name = formatter_.GetParameterName(i); | |
| 453 if (!parameters.HasKey(name)) | |
| 454 { | |
| 455 LOG(ERROR) << "Missing required parameter in a SQL query: " << name; | |
| 456 throw Orthanc::OrthancException(Orthanc::ErrorCode_InexistentItem); | |
| 457 } | |
| 458 | |
| 459 ValueType type = formatter_.GetParameterType(i); | |
| 460 | |
| 461 const IValue& value = parameters.GetValue(name); | |
| 462 if (value.GetType() != type) | |
| 463 { | |
| 464 LOG(ERROR) << "Bad type of argument provided to a SQL query: " << name; | |
| 465 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadParameterType); | |
| 466 } | |
| 467 | |
| 468 // https://dev.mysql.com/doc/refman/8.0/en/c-api-prepared-statement-type-codes.html | |
| 469 switch (type) | |
| 470 { | |
| 471 case ValueType_Integer64: | |
| 472 { | |
| 473 int64Parameters.push_back(dynamic_cast<const Integer64Value&>(value).GetValue()); | |
| 474 inputs[i].buffer = &int64Parameters.back(); | |
| 475 inputs[i].buffer_type = MYSQL_TYPE_LONGLONG; | |
| 476 break; | |
| 477 } | |
| 478 | |
| 479 case ValueType_Utf8String: | |
| 480 { | |
| 481 const std::string& utf8 = dynamic_cast<const Utf8StringValue&>(value).GetContent(); | |
| 482 inputs[i].buffer = const_cast<char*>(utf8.c_str()); | |
| 483 inputs[i].buffer_length = utf8.size(); | |
| 484 inputs[i].buffer_type = MYSQL_TYPE_STRING; | |
| 485 break; | |
| 486 } | |
| 487 | |
| 488 case ValueType_BinaryString: | |
| 489 { | |
| 490 const std::string& content = dynamic_cast<const BinaryStringValue&>(value).GetContent(); | |
| 491 inputs[i].buffer = const_cast<char*>(content.c_str()); | |
| 492 inputs[i].buffer_length = content.size(); | |
| 493 inputs[i].buffer_type = MYSQL_TYPE_BLOB; | |
| 494 break; | |
| 495 } | |
| 496 | |
| 497 case ValueType_File: | |
| 498 { | |
| 499 const std::string& content = dynamic_cast<const FileValue&>(value).GetContent(); | |
| 500 inputs[i].buffer = const_cast<char*>(content.c_str()); | |
| 501 inputs[i].buffer_length = content.size(); | |
| 502 inputs[i].buffer_type = MYSQL_TYPE_BLOB; | |
| 503 break; | |
| 504 } | |
| 505 | |
| 506 case ValueType_Null: | |
| 507 { | |
| 508 inputs[i].buffer = NULL; | |
| 509 inputs[i].buffer_type = MYSQL_TYPE_NULL; | |
| 510 break; | |
| 511 } | |
| 512 | |
| 513 default: | |
| 514 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 515 } | |
| 516 } | |
| 517 | |
| 518 if (!inputs.empty()) | |
| 519 { | |
| 520 db_.CheckErrorCode(mysql_stmt_bind_param(statement_, &inputs[0])); | |
| 521 } | |
| 522 | |
| 523 db_.CheckErrorCode(mysql_stmt_execute(statement_)); | |
| 524 | |
| 525 outputs_.resize(result_.size()); | |
| 526 | |
| 527 for (size_t i = 0; i < result_.size(); i++) | |
| 528 { | |
| 529 assert(result_[i] != NULL); | |
| 530 result_[i]->PrepareBind(outputs_[i]); | |
| 531 } | |
| 532 | |
| 533 if (!outputs_.empty()) | |
| 534 { | |
| 535 db_.CheckErrorCode(mysql_stmt_bind_result(statement_, &outputs_[0])); | |
| 536 db_.CheckErrorCode(mysql_stmt_store_result(statement_)); | |
| 537 } | |
| 538 | |
| 539 return new MySQLResult(db_, *this); | |
| 540 } | |
| 541 | |
| 542 | |
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543 void MySQLStatement::ExecuteWithoutResult(ITransaction& transaction, |
| 0 | 544 const Dictionary& parameters) |
| 545 { | |
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546 std::unique_ptr<IResult> dummy(Execute(transaction, parameters)); |
| 0 | 547 } |
| 548 } |