tstring FilterSubstitution(tstring aString) {
tstring result = aString;
tstring::size_type start = 0, end = tstring::npos;
TCHAR *envData;
while (true) {
start = result.find(tstring::value_type('$'), start);
if (start == tstring::npos) {
break;
}
end = result.find(tstring::value_type('$'), start + 1);
if (end == tstring::npos) {
break;
}
// Try to substitute $APPDIR$
tstring variable = result.substr(start + 1, end - start - 1);
if (variable == _T("APPDIR")) {
tstring appdir = GetAppResoucesDirectory();
DebugMessage("AppDir: %s", appdir.c_str());
result.replace(start, end-start+1, appdir);
start += appdir.length();
continue;
}
// Try to substitute $XXX$ with environment variable %DISTHELPER_XXX%
tstring envName(_T("DISTHELPER_"));
envName.append(variable);
envData = _tgetenv(envName.c_str());
if (envData && *envData) {
tstring envValue(envData);
DebugMessage("Environment %s: %s", envName.c_str(), envValue.c_str());
result.replace(start, end-start+1, envValue.c_str());
start += envValue.length();
continue;
}
// Try to substitute $XXX$ with environment variable %XXX%
envData = _tgetenv(variable.c_str());
if (envData && *envData) {
tstring envValue(envData);
DebugMessage("Environment %s: %s", envName.c_str(), envValue.c_str());
result.replace(start, end-start+1, envValue.c_str());
start += envValue.length();
continue;
}
start = end + 1;
}
return result;
}
std::string HTTPRequest::envValue(const std::string& name) const
{
if (name == "CONTENT_TYPE") {
return headerValue("Content-Type");
} else if (name == "CONTENT_LENGTH") {
return headerValue("Content-Length");
} else if (name == "SERVER_SIGNATURE") {
return "<address>Wt httpd Server ("
+ envValue("SERVER_SOFTWARE")
+ ")</address>";
} else if (name == "SERVER_SOFTWARE") {
return "Wthttpd/"
+ boost::lexical_cast<std::string>(WT_SERIES) + '.'
+ boost::lexical_cast<std::string>(WT_MAJOR) + '.'
+ boost::lexical_cast<std::string>(WT_MINOR);
} else if (name == "SERVER_ADMIN") {
return "webmaster@localhost"; // FIXME
} else if (name == "REMOTE_ADDR") {
return remoteAddr();
} else if (name == "DOCUMENT_ROOT") {
return reply_->configuration().docRoot();
} else
return std::string();
}
