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ImHex/lib/libimhex/source/helpers/http_requests.cpp

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#include <hex/helpers/http_requests.hpp>
namespace hex {
std::string HttpRequest::s_caCertData;
std::string HttpRequest::s_proxyUrl;
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HttpRequest::HttpRequest(std::string method, std::string url) : m_method(std::move(method)), m_url(std::move(url)) {
AT_FIRST_TIME {
curl_global_init(CURL_GLOBAL_ALL);
};
AT_FINAL_CLEANUP {
curl_global_cleanup();
};
this->m_curl = curl_easy_init();
}
HttpRequest::~HttpRequest() {
curl_easy_cleanup(this->m_curl);
}
void HttpRequest::setDefaultConfig() {
curl_easy_setopt(this->m_curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_2TLS);
curl_easy_setopt(this->m_curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
curl_easy_setopt(this->m_curl, CURLOPT_FOLLOWLOCATION, 1L);
curl_easy_setopt(this->m_curl, CURLOPT_USERAGENT, "ImHex/1.0");
curl_easy_setopt(this->m_curl, CURLOPT_DEFAULT_PROTOCOL, "https");
curl_easy_setopt(this->m_curl, CURLOPT_SSL_VERIFYPEER, 1L);
curl_easy_setopt(this->m_curl, CURLOPT_SSL_VERIFYHOST, 2L);
curl_easy_setopt(this->m_curl, CURLOPT_TIMEOUT_MS, 0L);
curl_easy_setopt(this->m_curl, CURLOPT_CONNECTTIMEOUT_MS, this->m_timeout);
curl_easy_setopt(this->m_curl, CURLOPT_NOSIGNAL, 1L);
curl_easy_setopt(this->m_curl, CURLOPT_NOPROGRESS, 0L);
curl_easy_setopt(this->m_curl, CURLOPT_XFERINFODATA, this);
curl_easy_setopt(this->m_curl, CURLOPT_XFERINFOFUNCTION, progressCallback);
curl_easy_setopt(this->m_curl, CURLOPT_PROXY, s_proxyUrl.c_str());
#if defined(IMHEX_USE_BUNDLED_CA)
curl_easy_setopt(this->m_curl, CURLOPT_CAINFO, nullptr);
curl_easy_setopt(this->m_curl, CURLOPT_CAPATH, nullptr);
curl_easy_setopt(this->m_curl, CURLOPT_SSLCERTTYPE, "PEM");
curl_easy_setopt(this->m_curl, CURLOPT_SSL_CTX_FUNCTION, sslCtxFunction);
this->m_caCert = std::make_unique<mbedtls_x509_crt>();
curl_easy_setopt(this->m_curl, CURLOPT_SSL_CTX_DATA, this->m_caCert.get());
#endif
}
CURLcode HttpRequest::sslCtxFunction(CURL *ctx, void *sslctx, void *userData) {
hex::unused(ctx, userData);
auto *cfg = static_cast<mbedtls_ssl_config *>(sslctx);
auto crt = static_cast<mbedtls_x509_crt*>(userData);
mbedtls_x509_crt_init(crt);
mbedtls_x509_crt_parse(crt, reinterpret_cast<const u8 *>(HttpRequest::s_caCertData.data()), HttpRequest::s_caCertData.size());
mbedtls_ssl_conf_ca_chain(cfg, crt, nullptr);
return CURLE_OK;
}
size_t HttpRequest::writeToVector(void *contents, size_t size, size_t nmemb, void *userdata) {
auto &response = *reinterpret_cast<std::vector<u8>*>(userdata);
auto startSize = response.size();
response.resize(startSize + size * nmemb);
std::memcpy(response.data() + startSize, contents, size * nmemb);
return size * nmemb;
}
size_t HttpRequest::writeToFile(void *contents, size_t size, size_t nmemb, void *userdata) {
auto &file = *reinterpret_cast<wolv::io::File*>(userdata);
file.writeBuffer(reinterpret_cast<const u8*>(contents), size * nmemb);
return size * nmemb;
}
int HttpRequest::progressCallback(void *contents, curl_off_t dlTotal, curl_off_t dlNow, curl_off_t ulTotal, curl_off_t ulNow) {
auto &request = *static_cast<HttpRequest *>(contents);
if (dlTotal > 0)
request.m_progress = float(dlNow) / dlTotal;
else if (ulTotal > 0)
request.m_progress = float(ulNow) / ulTotal;
else
request.m_progress = 0.0F;
return request.m_canceled ? CURLE_ABORTED_BY_CALLBACK : CURLE_OK;
}
}