szaszm commented on a change in pull request #1219:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1219#discussion_r782082669
##########
File path: extensions/http-curl/client/HTTPClient.cpp
##########
@@ -212,7 +212,10 @@ void HTTPClient::setContentType(std::string content_type) {
}
std::string HTTPClient::escape(std::string string_to_escape) {
- return curl_easy_escape(http_session_, string_to_escape.c_str(),
gsl::narrow<int>(string_to_escape.length()));
+ char* escaped_chars = curl_easy_escape(http_session_,
string_to_escape.c_str(), gsl::narrow<int>(string_to_escape.length()));
+ std::string escaped_string(escaped_chars);
+ curl_free(escaped_chars);
+ return escaped_string;
Review comment:
In theory string's constructor can throw which would result in leaking
`escaped_chars`. Consider using `unique_ptr` with a custom curl deleter.
```suggestion
struct curl_deleter { void operator()(void* p) noexcept { curl_free(p); }
};
std::unique_ptr<char, curl_deleter>
escaped_chars{curl_easy_escape(http_session_, string_to_escape.c_str(),
gsl::narrow<int>(string_to_escape.length()))};
std::string escaped_string(escaped_chars.get());
return escaped_string;
```
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