1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
|
Description: Fix denial-of-service in Qt SQL ODBC driver plugin
Origin: upstream, https://download.qt.io/official_releases/qt/5.15/CVE-2023-24607-qtbase-5.15.diff
Last-Update: 2023-02-26
--- a/src/plugins/sqldrivers/odbc/qsql_odbc.cpp
+++ b/src/plugins/sqldrivers/odbc/qsql_odbc.cpp
@@ -92,23 +92,39 @@ inline static QString fromSQLTCHAR(const
return result;
}
+template <size_t SizeOfChar = sizeof(SQLTCHAR)>
+void toSQLTCHARImpl(QVarLengthArray<SQLTCHAR> &result, const QString &input); // primary template undefined
+
+template <typename Container>
+void do_append(QVarLengthArray<SQLTCHAR> &result, const Container &c)
+{
+ result.append(reinterpret_cast<const SQLTCHAR *>(c.data()), c.size());
+}
+
+template <>
+void toSQLTCHARImpl<1>(QVarLengthArray<SQLTCHAR> &result, const QString &input)
+{
+ const auto u8 = input.toUtf8();
+ do_append(result, u8);
+}
+
+template <>
+void toSQLTCHARImpl<2>(QVarLengthArray<SQLTCHAR> &result, const QString &input)
+{
+ do_append(result, input);
+}
+
+template <>
+void toSQLTCHARImpl<4>(QVarLengthArray<SQLTCHAR> &result, const QString &input)
+{
+ const auto u32 = input.toUcs4();
+ do_append(result, u32);
+}
+
inline static QVarLengthArray<SQLTCHAR> toSQLTCHAR(const QString &input)
{
QVarLengthArray<SQLTCHAR> result;
- result.resize(input.size());
- switch(sizeof(SQLTCHAR)) {
- case 1:
- memcpy(result.data(), input.toUtf8().data(), input.size());
- break;
- case 2:
- memcpy(result.data(), input.unicode(), input.size() * 2);
- break;
- case 4:
- memcpy(result.data(), input.toUcs4().data(), input.size() * 4);
- break;
- default:
- qCritical("sizeof(SQLTCHAR) is %d. Don't know how to handle this.", int(sizeof(SQLTCHAR)));
- }
+ toSQLTCHARImpl(result, input);
result.append(0); // make sure it's null terminated, doesn't matter if it already is, it does if it isn't.
return result;
}
@@ -763,6 +779,14 @@ QChar QODBCDriverPrivate::quoteChar()
return quote;
}
+static SQLRETURN qt_string_SQLSetConnectAttr(SQLHDBC handle, SQLINTEGER attr, const QString &val)
+{
+ auto encoded = toSQLTCHAR(val);
+ return SQLSetConnectAttr(handle, attr,
+ encoded.data(),
+ SQLINTEGER(encoded.size() * sizeof(SQLTCHAR))); // size in bytes
+}
+
bool QODBCDriverPrivate::setConnectionOptions(const QString& connOpts)
{
@@ -798,10 +822,7 @@ bool QODBCDriverPrivate::setConnectionOp
v = val.toUInt();
r = SQLSetConnectAttr(hDbc, SQL_ATTR_LOGIN_TIMEOUT, (SQLPOINTER) size_t(v), 0);
} else if (opt.toUpper() == QLatin1String("SQL_ATTR_CURRENT_CATALOG")) {
- val.utf16(); // 0 terminate
- r = SQLSetConnectAttr(hDbc, SQL_ATTR_CURRENT_CATALOG,
- toSQLTCHAR(val).data(),
- val.length()*sizeof(SQLTCHAR));
+ r = qt_string_SQLSetConnectAttr(hDbc, SQL_ATTR_CURRENT_CATALOG, val);
} else if (opt.toUpper() == QLatin1String("SQL_ATTR_METADATA_ID")) {
if (val.toUpper() == QLatin1String("SQL_TRUE")) {
v = SQL_TRUE;
@@ -816,10 +837,7 @@ bool QODBCDriverPrivate::setConnectionOp
v = val.toUInt();
r = SQLSetConnectAttr(hDbc, SQL_ATTR_PACKET_SIZE, (SQLPOINTER) size_t(v), 0);
} else if (opt.toUpper() == QLatin1String("SQL_ATTR_TRACEFILE")) {
- val.utf16(); // 0 terminate
- r = SQLSetConnectAttr(hDbc, SQL_ATTR_TRACEFILE,
- toSQLTCHAR(val).data(),
- val.length()*sizeof(SQLTCHAR));
+ r = qt_string_SQLSetConnectAttr(hDbc, SQL_ATTR_TRACEFILE, val);
} else if (opt.toUpper() == QLatin1String("SQL_ATTR_TRACE")) {
if (val.toUpper() == QLatin1String("SQL_OPT_TRACE_OFF")) {
v = SQL_OPT_TRACE_OFF;
@@ -1022,9 +1040,12 @@ bool QODBCResult::reset (const QString&
return false;
}
- r = SQLExecDirect(d->hStmt,
- toSQLTCHAR(query).data(),
- (SQLINTEGER) query.length());
+ {
+ auto encoded = toSQLTCHAR(query);
+ r = SQLExecDirect(d->hStmt,
+ encoded.data(),
+ SQLINTEGER(encoded.size()));
+ }
if (r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO && r!= SQL_NO_DATA) {
setLastError(qMakeError(QCoreApplication::translate("QODBCResult",
"Unable to execute statement"), QSqlError::StatementError, d));
@@ -1371,9 +1392,12 @@ bool QODBCResult::prepare(const QString&
return false;
}
- r = SQLPrepare(d->hStmt,
- toSQLTCHAR(query).data(),
- (SQLINTEGER) query.length());
+ {
+ auto encoded = toSQLTCHAR(query);
+ r = SQLPrepare(d->hStmt,
+ encoded.data(),
+ SQLINTEGER(encoded.size()));
+ }
if (r != SQL_SUCCESS) {
setLastError(qMakeError(QCoreApplication::translate("QODBCResult",
@@ -1401,7 +1425,7 @@ bool QODBCResult::exec()
SQLCloseCursor(d->hStmt);
QVector<QVariant>& values = boundValues();
- QVector<QByteArray> tmpStorage(values.count(), QByteArray()); // holds temporary buffers
+ QVector<QByteArray> tmpStorage(values.count(), QByteArray()); // targets for SQLBindParameter()
QVarLengthArray<SQLLEN, 32> indicators(values.count());
memset(indicators.data(), 0, indicators.size() * sizeof(SQLLEN));
@@ -1580,35 +1604,36 @@ bool QODBCResult::exec()
case QVariant::String:
if (d->unicode) {
QByteArray &ba = tmpStorage[i];
- QString str = val.toString();
+ {
+ const auto encoded = toSQLTCHAR(val.toString());
+ ba = QByteArray(reinterpret_cast<const char *>(encoded.data()),
+ encoded.size() * sizeof(SQLTCHAR));
+ }
+
if (*ind != SQL_NULL_DATA)
- *ind = str.length() * sizeof(SQLTCHAR);
- int strSize = str.length() * sizeof(SQLTCHAR);
+ *ind = ba.size();
if (bindValueType(i) & QSql::Out) {
- const QVarLengthArray<SQLTCHAR> a(toSQLTCHAR(str));
- ba = QByteArray((const char *)a.constData(), a.size() * sizeof(SQLTCHAR));
r = SQLBindParameter(d->hStmt,
i + 1,
qParamType[bindValueType(i) & QSql::InOut],
SQL_C_TCHAR,
- strSize > 254 ? SQL_WLONGVARCHAR : SQL_WVARCHAR,
+ ba.size() > 254 ? SQL_WLONGVARCHAR : SQL_WVARCHAR,
0, // god knows... don't change this!
0,
- ba.data(),
+ const_cast<char *>(ba.constData()), // don't detach
ba.size(),
ind);
break;
}
- ba = QByteArray ((const char *)toSQLTCHAR(str).constData(), str.size()*sizeof(SQLTCHAR));
r = SQLBindParameter(d->hStmt,
i + 1,
qParamType[bindValueType(i) & QSql::InOut],
SQL_C_TCHAR,
- strSize > 254 ? SQL_WLONGVARCHAR : SQL_WVARCHAR,
- strSize,
+ ba.size() > 254 ? SQL_WLONGVARCHAR : SQL_WVARCHAR,
+ ba.size(),
0,
- const_cast<char *>(ba.constData()),
+ const_cast<char *>(ba.constData()), // don't detach
ba.size(),
ind);
break;
@@ -1716,10 +1741,11 @@ bool QODBCResult::exec()
case QVariant::String:
if (d->unicode) {
if (bindValueType(i) & QSql::Out) {
- const QByteArray &first = tmpStorage.at(i);
- QVarLengthArray<SQLTCHAR> array;
- array.append((const SQLTCHAR *)first.constData(), first.size());
- values[i] = fromSQLTCHAR(array, first.size()/sizeof(SQLTCHAR));
+ const QByteArray &bytes = tmpStorage.at(i);
+ const auto strSize = bytes.size() / int(sizeof(SQLTCHAR));
+ QVarLengthArray<SQLTCHAR> string(strSize);
+ memcpy(string.data(), bytes.data(), strSize * sizeof(SQLTCHAR));
+ values[i] = fromSQLTCHAR(string);
}
break;
}
@@ -1966,14 +1992,16 @@ bool QODBCDriver::open(const QString & d
SQLSMALLINT cb;
QVarLengthArray<SQLTCHAR> connOut(1024);
memset(connOut.data(), 0, connOut.size() * sizeof(SQLTCHAR));
- r = SQLDriverConnect(d->hDbc,
- NULL,
- toSQLTCHAR(connQStr).data(),
- (SQLSMALLINT)connQStr.length(),
- connOut.data(),
- 1024,
- &cb,
- /*SQL_DRIVER_NOPROMPT*/0);
+ {
+ auto encoded = toSQLTCHAR(connQStr);
+ r = SQLDriverConnect(d->hDbc,
+ nullptr,
+ encoded.data(), SQLSMALLINT(encoded.size()),
+ connOut.data(),
+ 1024,
+ &cb,
+ /*SQL_DRIVER_NOPROMPT*/0);
+ }
if (r != SQL_SUCCESS && r != SQL_SUCCESS_WITH_INFO) {
setLastError(qMakeError(tr("Unable to connect"), QSqlError::ConnectionError, d));
@@ -2352,17 +2380,15 @@ QStringList QODBCDriver::tables(QSql::Ta
if (tableType.isEmpty())
return tl;
- QString joinedTableTypeString = tableType.join(QLatin1Char(','));
+ {
+ auto joinedTableTypeString = toSQLTCHAR(tableType.join(u','));
- r = SQLTables(hStmt,
- NULL,
- 0,
- NULL,
- 0,
- NULL,
- 0,
- toSQLTCHAR(joinedTableTypeString).data(),
- joinedTableTypeString.length() /* characters, not bytes */);
+ r = SQLTables(hStmt,
+ nullptr, 0,
+ nullptr, 0,
+ nullptr, 0,
+ joinedTableTypeString.data(), joinedTableTypeString.size());
+ }
if (r != SQL_SUCCESS)
qSqlWarning(QLatin1String("QODBCDriver::tables Unable to execute table list"), d);
@@ -2436,28 +2462,30 @@ QSqlIndex QODBCDriver::primaryIndex(cons
SQL_ATTR_CURSOR_TYPE,
(SQLPOINTER)SQL_CURSOR_FORWARD_ONLY,
SQL_IS_UINTEGER);
- r = SQLPrimaryKeys(hStmt,
- catalog.length() == 0 ? NULL : toSQLTCHAR(catalog).data(),
- catalog.length(),
- schema.length() == 0 ? NULL : toSQLTCHAR(schema).data(),
- schema.length(),
- toSQLTCHAR(table).data(),
- table.length() /* in characters, not in bytes */);
+ {
+ auto c = toSQLTCHAR(catalog);
+ auto s = toSQLTCHAR(schema);
+ auto t = toSQLTCHAR(table);
+ r = SQLPrimaryKeys(hStmt,
+ catalog.isEmpty() ? nullptr : c.data(), c.size(),
+ schema.isEmpty() ? nullptr : s.data(), s.size(),
+ t.data(), t.size());
+ }
// if the SQLPrimaryKeys() call does not succeed (e.g the driver
// does not support it) - try an alternative method to get hold of
// the primary index (e.g MS Access and FoxPro)
if (r != SQL_SUCCESS) {
- r = SQLSpecialColumns(hStmt,
- SQL_BEST_ROWID,
- catalog.length() == 0 ? NULL : toSQLTCHAR(catalog).data(),
- catalog.length(),
- schema.length() == 0 ? NULL : toSQLTCHAR(schema).data(),
- schema.length(),
- toSQLTCHAR(table).data(),
- table.length(),
- SQL_SCOPE_CURROW,
- SQL_NULLABLE);
+ auto c = toSQLTCHAR(catalog);
+ auto s = toSQLTCHAR(schema);
+ auto t = toSQLTCHAR(table);
+ r = SQLSpecialColumns(hStmt,
+ SQL_BEST_ROWID,
+ catalog.isEmpty() ? nullptr : c.data(), c.size(),
+ schema.isEmpty() ? nullptr : s.data(), s.size(),
+ t.data(), t.size(),
+ SQL_SCOPE_CURROW,
+ SQL_NULLABLE);
if (r != SQL_SUCCESS) {
qSqlWarning(QLatin1String("QODBCDriver::primaryIndex: Unable to execute primary key list"), d);
@@ -2538,15 +2566,17 @@ QSqlRecord QODBCDriver::record(const QSt
SQL_ATTR_CURSOR_TYPE,
(SQLPOINTER)SQL_CURSOR_FORWARD_ONLY,
SQL_IS_UINTEGER);
- r = SQLColumns(hStmt,
- catalog.length() == 0 ? NULL : toSQLTCHAR(catalog).data(),
- catalog.length(),
- schema.length() == 0 ? NULL : toSQLTCHAR(schema).data(),
- schema.length(),
- toSQLTCHAR(table).data(),
- table.length(),
- NULL,
- 0);
+ {
+ auto c = toSQLTCHAR(catalog);
+ auto s = toSQLTCHAR(schema);
+ auto t = toSQLTCHAR(table);
+ r = SQLColumns(hStmt,
+ catalog.isEmpty() ? nullptr : c.data(), c.size(),
+ schema.isEmpty() ? nullptr : s.data(), s.size(),
+ t.data(), t.size(),
+ nullptr,
+ 0);
+ }
if (r != SQL_SUCCESS)
qSqlWarning(QLatin1String("QODBCDriver::record: Unable to execute column list"), d);
|
