Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix string iteration logic in wxFTP::Pwd()

Browse Source 
wxString iterators can't be dereferenced once they reach the end of the
string, so compare them with end rather than checking if the value they point
to is non-NUL.

This makes wxFTP::Pwd() actually work, which was apparently broken since quite
some time (perhaps ever since c9f7896861 9+
years ago).

Closes #17679.
This commit is contained in:
Vadim Zeitlin
2016-09-25 01:20:41 +02:00
parent 461d0b2005
commit d0c57dbef0
3 changed files with 17 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/common/ftp.cpp
View File

@@ -459,20 +459,21 @@ wxString wxFTP::Pwd()
{
// the result is at least that long if CheckCommand() succeeded
wxString::const_iterator p = m_lastResult.begin() + LEN_CODE + 1;
if ( *p != wxT('"') )
const wxString::const_iterator end = m_lastResult.end();
if ( p == end || *p != wxT('"') )
{
wxLogDebug(wxT("Missing starting quote in reply for PWD: %s"),
wxString(p, m_lastResult.end()));
wxString(p, end));
}
else
{
for ( ++p; *p; ++p )
for ( ++p; p != end; ++p )
{
if ( *p == wxT('"') )
{
// check if the quote is doubled
++p;
if ( !*p || *p != wxT('"') )
if ( p == end || *p != wxT('"') )
{
// no, this is the end
break;
@@ -484,7 +485,7 @@ wxString wxFTP::Pwd()
path += *p;
}
if ( !*p )
if ( p != end )
{
wxLogDebug(wxT("Missing ending quote in reply for PWD: %s"),
m_lastResult.c_str() + LEN_CODE + 1);