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ODBC Unicode wrappers do not check for null length pointers #4505

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ODBC Unicode wrappers do not check for null length pointers#4505
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bugfixed
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Release 1.13.3
@aleks-f

Description

@aleks-f
aleks-f
opened on Mar 21, 2024

Describe the bug
Unicode wrappers indiscriminately use length pointer, even when caller sends null:

poco/Data/ODBC/src/Unicode_WIN32.cpp

Line 52 in 03c2fa3

makeUTF8(buffer, *pcbCharAttr, pCharAttr, cbCharAttrMax);

poco/Data/ODBC/src/ConnectionHandle.cpp

Lines 267 to 271 in 03c2fa3

if (Utility::isError(Poco::Data::ODBC::SQLGetConnectAttr(_hdbc,
SQL_ATTR_CONNECTION_DEAD,
&value,
sizeof(value),
0))) return false;

Relevant environment information:

  • OS: Any
  • Poco version: All
  • ODBC

Caller may not be interested in such details, so passing null should be permitted and dealt with internally in the function

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