123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
#include "Downloader.h"
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#if !defined(WIN32) && !defined(_WIN32) && !defined(__WIN32__) && !defined(__NT__)
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error_t fopen_s(FILE** f, const char* name, const char* mode)
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{ // https://stackoverflow.com/questions/1513209/is-there-a-way-to-use-fopen-s-with-gcc-or-at-least-create-a-define-about-it
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error_t ret = 0;
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assert(f);
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*f = fopen(name, mode);
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if (!*f)
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{
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ret = errno;
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}
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return ret;
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}
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#endif
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using namespace std;
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Downloader::Downloader()
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{
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m_fp = nullptr;
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m_downloadCallback = nullptr;
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curl_global_init(CURL_GLOBAL_DEFAULT);
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m_curl = curl_easy_init();
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curl_easy_setopt(m_curl, CURLOPT_SSL_VERIFYPEER, 0L);
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curl_easy_setopt(m_curl, CURLOPT_SSL_VERIFYHOST, 0L);
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curl_easy_setopt(m_curl, CURLOPT_COOKIEFILE, "");
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curl_easy_setopt(m_curl, CURLOPT_COOKIEJAR, "");
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curl_easy_setopt(m_curl, CURLOPT_WRITEDATA, this);
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}
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Downloader::Downloader(std::string uqUrl, std::string outputFile) : Downloader()
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{
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setUqUrl(uqUrl);
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setOutputFile(outputFile);
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}
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void Downloader::setUqUrl(std::string uqUrl)
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{
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m_uqUrl = uqUrl;
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}
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void Downloader::setOutputFile(std::string outputFile)
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{
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m_outputFile = outputFile;
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}
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void Downloader::setDownloadCallback(void* callback)
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{
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if (callback != nullptr)
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{
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curl_easy_setopt(m_curl, CURLOPT_NOPROGRESS, false);
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m_downloadCallback = callback;
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}
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}
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Downloader::~Downloader()
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{
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if (m_curl)
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{
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curl_easy_cleanup(m_curl);
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curl_global_cleanup();
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}
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if (m_fp != nullptr)
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{
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fclose(m_fp);
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}
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}
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size_t Downloader::writefunc(void* ptr, size_t size, size_t nmemb, std::string* s)
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{
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s->append(static_cast<char*>(ptr), size * nmemb);
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return size * nmemb;
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}
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void Downloader::download()
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{
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if (m_uqUrl == "" || m_outputFile == "")
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{
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throw string("Error: please specify URL and output file");
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}
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if (!m_curl)
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{
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throw string("Error: curl init");
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}
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if (uqdCheckAccess(m_outputFile.c_str(), 0) == 0)
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{
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throw string("Error: " + m_outputFile + " already exists");
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}
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fopen_s(&m_fp, m_outputFile.c_str(), "wb");
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string strHTML;
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curl_easy_setopt(m_curl, CURLOPT_URL, m_uqUrl.c_str());
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curl_easy_setopt(m_curl, CURLOPT_WRITEFUNCTION, &Downloader::writefunc);
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curl_easy_setopt(m_curl, CURLOPT_WRITEDATA, &strHTML);
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m_res = curl_easy_perform(m_curl);
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if (m_res != CURLE_OK)
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{
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throw string("Error: curl_easy_perform() failed: " + string(curl_easy_strerror(m_res)));
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}
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size_t posBegVid = strHTML.find("sources: [\"https://");
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size_t posEndVid = strHTML.find("/v.mp4\"]");
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if (posBegVid == std::string::npos || posEndVid == std::string::npos)
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{
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throw string("Video URL not found");
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}
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string videoURL = strHTML.substr(posBegVid + 11, posEndVid - posBegVid - 5);
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if (m_downloadCallback != nullptr)
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{
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curl_easy_setopt(m_curl, CURLOPT_XFERINFOFUNCTION, m_downloadCallback);
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}
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curl_easy_setopt(m_curl, CURLOPT_URL, videoURL.c_str());
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curl_easy_setopt(m_curl, CURLOPT_REFERER, m_uqUrl.c_str());
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curl_easy_setopt(m_curl, CURLOPT_WRITEFUNCTION, NULL);
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curl_easy_setopt(m_curl, CURLOPT_WRITEDATA, m_fp);
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m_res = curl_easy_perform(m_curl);
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if (m_res != CURLE_OK)
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{
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throw string("Error: curl_easy_perform() failed: " + string(curl_easy_strerror(m_res)));
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}
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}
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