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#include "curl-helper.hpp"
#include "log-helper.hpp"
#include <QDir>
#include <QFileInfo>
#include <curl/curl.h>
namespace advss {
#if defined(WIN32)
constexpr auto curl_library_name = "libcurl.dll";
#elif __APPLE__
constexpr auto curl_library_name = "libcurl.4.dylib";
#else
constexpr auto curl_library_name = "libcurl.so.4";
#endif
CurlHelper::CurlHelper()
{
if (LoadLib()) {
_curl = _init();
_initialized = true;
}
}
CurlHelper::~CurlHelper()
{
if (_lib) {
if (_cleanup) {
_cleanup(_curl);
}
delete _lib;
_lib = nullptr;
}
}
CurlHelper &CurlHelper::GetInstance()
{
static CurlHelper curl;
return curl;
}
bool CurlHelper::Initialized()
{
return GetInstance()._initialized;
}
curl_slist *CurlHelper::SlistAppend(curl_slist *list, const char *string)
{
auto &curl = GetInstance();
if (!curl._initialized) {
return nullptr;
}
return curl._slistAppend(list, string);
}
CURLcode CurlHelper::Perform()
{
auto &curl = GetInstance();
if (!curl._initialized) {
return CURLE_FAILED_INIT;
}
return curl._perform(curl._curl);
}
char *CurlHelper::GetError(CURLcode code)
{
auto &curl = GetInstance();
if (!curl._initialized) {
return (char *)"CURL initialization failed";
}
return curl._error(code);
}
bool CurlHelper::LoadLib()
{
_lib = new QLibrary(curl_library_name, nullptr);
if (Resolve()) {
blog(LOG_INFO, "found curl library");
return true;
} else {
delete _lib;
_lib = nullptr;
blog(LOG_WARNING, "couldn't find the curl library in PATH");
}
QStringList locations;
locations << QDir::currentPath();
#if defined(__linux__) || defined(__APPLE__)
locations << "/usr/lib";
locations << "/usr/local/lib";
locations << "/usr/lib/x86_64-linux-gnu";
locations << "/usr/local/opt/curl/lib";
#endif
for (QString path : locations) {
blog(LOG_INFO, "trying '%s'", path.toUtf8().constData());
QFileInfo libPath(
QDir(path).absoluteFilePath(curl_library_name));
if (libPath.exists() && libPath.isFile()) {
QString libFilePath = libPath.absoluteFilePath();
blog(LOG_INFO, "found curl library at '%s'",
libFilePath.toUtf8().constData());
_lib = new QLibrary(libFilePath, nullptr);
if (Resolve()) {
return true;
} else {
delete _lib;
_lib = nullptr;
}
}
}
blog(LOG_WARNING, "can't find the curl library");
return false;
}
bool CurlHelper::Resolve()
{
_init = (initFunction)_lib->resolve("curl_easy_init");
_setopt = (setOptFunction)_lib->resolve("curl_easy_setopt");
_slistAppend = (slistAppendFunction)_lib->resolve("curl_slist_append");
_perform = (performFunction)_lib->resolve("curl_easy_perform");
_cleanup = (cleanupFunction)_lib->resolve("curl_easy_cleanup");
_error = (errorFunction)_lib->resolve("curl_easy_strerror");
if (_init && _setopt && _slistAppend && _perform && _cleanup &&
_error) {
blog(LOG_INFO, "curl loaded successfully");
return true;
}
blog(LOG_INFO, "curl symbols not resolved");
return false;
}
} // namespace advss
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