libzypp  17.35.11
MediaMultiCurl.cc
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13 #include <ctype.h>
14 #include <sys/types.h>
15 #include <signal.h>
16 #include <sys/wait.h>
17 #include <netdb.h>
18 #include <arpa/inet.h>
19 #include <glib.h>
20 
21 #include <utility>
22 #include <vector>
23 #include <iostream>
24 #include <algorithm>
25 
26 
27 #include <zypp/ManagedFile.h>
28 #include <zypp/ZConfig.h>
29 #include <zypp/base/Logger.h>
33 #include <zypp-curl/parser/MetaLinkParser>
36 #include <zypp-curl/auth/CurlAuthData>
39 
40 using std::endl;
41 using namespace zypp::base;
42 
43 #undef CURLVERSION_AT_LEAST
44 #define CURLVERSION_AT_LEAST(M,N,O) LIBCURL_VERSION_NUM >= ((((M)<<8)+(N))<<8)+(O)
45 
46 namespace zypp {
47  namespace media {
48 
50 
51 
114 class multifetchrequest;
115 
116 struct Stripe {
117 
118  enum RState {
119  PENDING, //< Pending Range
120  FETCH, //< Fetch is running!
121  COMPETING, //< Competing workers, needs checksum recheck
122  FINALIZED, //< Done, don't write to it anymore
123  REFETCH //< This block needs a refetch
124  };
125 
126  std::vector<off_t> blocks; //< required block numbers from blocklist
127  std::vector<RState> blockStates; //< current state of each block in blocks
128 };
129 
138 };
139 
140 // Hack: we derive from MediaCurl just to get the storage space for
141 // settings, url, curlerrors and the like
143  friend class multifetchrequest;
144 
145 public:
146  multifetchworker(int no, multifetchrequest &request, const Url &url);
147  multifetchworker(const multifetchworker &) = delete;
148  multifetchworker(multifetchworker &&) = delete;
149  multifetchworker &operator=(const multifetchworker &) = delete;
150  multifetchworker &operator=(multifetchworker &&) = delete;
151  ~multifetchworker() override;
152 
157  void nextjob();
158 
163  void runjob();
164 
170  bool continueJob();
171 
176  bool recheckChecksum( off_t blockIdx );
177 
181  void disableCompetition();
182 
186  void checkdns();
187  void adddnsfd( std::vector<GPollFD> &waitFds );
188  void dnsevent(const std::vector<GPollFD> &waitFds );
189 
190  const int _workerno;
191 
193  bool _competing = false;
194 
195  std::vector<MultiByteHandler::Range> _blocks;
196  std::vector<off_t> _rangeToStripeBlock;
197 
198  MultiByteHandler::ProtocolMode _protocolMode = MultiByteHandler::ProtocolMode::Basic;
199  std::unique_ptr<MultiByteHandler> _multiByteHandler;
200 
201  off_t _stripe = 0; //< The current stripe we are downloading
202  size_t _datasize = 0; //< The nr of bytes we need to download overall
203 
204  double _starttime = 0; //< When was the current job started
205  size_t _datareceived = 0; //< Data downloaded in the current job only
206  off_t _received = 0; //< Overall data"MultiByteHandler::prepare failed" fetched by this worker
207 
208  double _avgspeed = 0;
209  double _maxspeed = 0;
210 
211  double _sleepuntil = 0;
212 
213 private:
214  void run();
215  void stealjob();
216  bool setupHandle();
217  MultiByteHandler::Range rangeFromBlock( off_t blockNo ) const;
218 
219  size_t writefunction ( char *ptr, std::optional<off_t> offset, size_t bytes ) override;
220  size_t headerfunction ( char *ptr, size_t bytes ) override;
221  bool beginRange ( off_t range, std::string &cancelReason ) override;
222  bool finishedRange ( off_t range, bool validated, std::string &cancelReason ) override;
223 
224  multifetchrequest *_request = nullptr;
225  int _pass = 0;
226  std::string _urlbuf;
227 
228  pid_t _pid = 0;
229  int _dnspipe = -1;
230 };
231 
233 public:
234  multifetchrequest(const MediaMultiCurl *context, Pathname filename,
235  Url baseurl, CURLM *multi, FILE *fp,
237  MediaBlockList &&blklist, off_t filesize);
238  multifetchrequest(const multifetchrequest &) = delete;
240  multifetchrequest &operator=(const multifetchrequest &) = delete;
241  multifetchrequest &operator=(multifetchrequest &&) = delete;
243 
244  void run(std::vector<Url> &urllist);
245  static ByteCount makeBlksize( uint maxConns, size_t filesize );
246 
248  return _blklist;
249  }
250 
251 protected:
252  friend class multifetchworker;
253 
257 
258  FILE *_fp = nullptr;
261 
262  std::vector<Stripe> _requiredStripes; // all the data we need
263 
264  off_t _filesize = 0; //< size of the file we want to download
265 
266  std::list< std::unique_ptr<multifetchworker> > _workers;
267  bool _stealing = false;
268  bool _havenewjob = false;
269 
270  zypp::ByteCount _defaultBlksize = 0; //< The blocksize to use if the metalink file does not specify one
271  off_t _stripeNo = 0; //< next stripe to download
272 
273  size_t _activeworkers = 0;
274  size_t _lookupworkers = 0;
275  size_t _sleepworkers = 0;
276  double _minsleepuntil = 0;
277  bool _finished = false;
278 
279  off_t _totalsize = 0; //< nr of bytes we need to download ( e.g. filesize - ( bytes reused from deltafile ) )
280  off_t _fetchedsize = 0;
281  off_t _fetchedgoodsize = 0;
282 
283  double _starttime = 0;
284  double _lastprogress = 0;
285 
286  double _lastperiodstart = 0;
287  double _lastperiodfetched = 0;
288  double _periodavg = 0;
289 
290 public:
291  double _timeout = 0;
292  double _connect_timeout = 0;
293  double _maxspeed = 0;
294  int _maxworkers = 0;
295 };
296 
297 constexpr auto MIN_REQ_MIRRS = 4;
298 constexpr auto MAXURLS = 10;
299 
300 // TCP communication scales up as a connection proceeds. This is due to TCP slowstart where
301 // the congestion window scales up. The stripe calculation assumes that every package can be fairly
302 // downloaded from multiple mirrors omits that attempting to download say 1MB from 4 mirrors
303 // means 4 requests of 256k, where then you have four congestion windows that need to increase
304 // meaning the overall download speed is significantly lower. Counter intuitively this leads to
305 // cases where *more* mirrors being available to zypper significantly lowers performance.
306 //
307 // Instead, there should be a minimum stripe size cap. This way any item smaller than the value
308 // is downloaded in a single request, where as larger items are downloaded from many mirrors
309 // but each range has enough time to increase it's congestion window to something reasonable.
310 //
311 // Initial value 4 MB;
312 constexpr auto MIN_STRIPE_SIZE_KB = 4096;
313 
315 
316 static double
318 {
319 #if _POSIX_C_SOURCE >= 199309L
320  struct timespec ts;
321  if ( clock_gettime( CLOCK_MONOTONIC, &ts) )
322  return 0;
323  return ts.tv_sec + ts.tv_nsec / 1000000000.;
324 #else
325  struct timeval tv;
326  if (gettimeofday(&tv, NULL))
327  return 0;
328  return tv.tv_sec + tv.tv_usec / 1000000.;
329 #endif
330 }
331 
332 size_t
333 multifetchworker::writefunction(char *ptr, std::optional<off_t> offset, size_t bytes)
334 {
335  if ( _state == WORKER_BROKEN || _state == WORKER_DISCARD )
336  return bytes ? 0 : 1;
337 
338  double now = currentTime();
339 
340  // update stats of overall data
341  _datareceived += bytes;
342  _received += bytes;
343  _request->_lastprogress = now;
344 
345  const auto &currRange = _multiByteHandler->currentRange();
346  if (!currRange)
347  return 0; // we always write to a range
348 
349  auto &stripeDesc = _request->_requiredStripes[_stripe];
350  if ( !_request->_fp || stripeDesc.blockStates[ _rangeToStripeBlock[*currRange] ] == Stripe::FINALIZED ) {
351  // someone else finished our block first!
352  // we stop here and fetch new jobs if there are still some
354  _competing = false;
355  return 0;
356  }
357 
358  const auto &blk = _blocks[*currRange];
359  off_t seekTo = blk.start + blk.bytesWritten;
360 
361  if ( ftell( _request->_fp ) != seekTo ) {
362  // if we can't seek the file there is no purpose in trying again
363  if (fseeko(_request->_fp, seekTo, SEEK_SET))
364  return bytes ? 0 : 1;
365  }
366 
367  size_t cnt = fwrite(ptr, 1, bytes, _request->_fp);
368  _request->_fetchedsize += cnt;
369  return cnt;
370 }
371 
372 bool multifetchworker::beginRange ( off_t workerRangeOff, std::string &cancelReason )
373 {
374  auto &stripeDesc = _request->_requiredStripes[_stripe];
375  auto stripeRangeOff = _rangeToStripeBlock[workerRangeOff];
376  const auto &currRangeState = stripeDesc.blockStates[stripeRangeOff];
377 
378  if ( currRangeState == Stripe::FINALIZED ){
379  cancelReason = "Cancelled because stripe block is already finalized";
381  WAR << "#" << _workerno << ": trying to start a range ("<<stripeRangeOff<<"["<< _blocks[workerRangeOff].start <<" : "<<_blocks[workerRangeOff].len<<"]) that was already finalized, cancelling. Stealing was: " << _request->_stealing << endl;
382  return false;
383  }
384  stripeDesc.blockStates[stripeRangeOff] = currRangeState == Stripe::PENDING ? Stripe::FETCH : Stripe::COMPETING;
385  return true;
386 }
387 
388 bool multifetchworker::finishedRange ( off_t workerRangeOff, bool validated, std::string &cancelReason )
389 {
390  auto &stripeDesc = _request->_requiredStripes[_stripe];
391  auto stripeRangeOff = _rangeToStripeBlock[workerRangeOff];
392  const auto &currRangeState = stripeDesc.blockStates[stripeRangeOff];
393 
394  if ( !validated ) {
395  // fail, worker will go into WORKER_BROKEN
396  cancelReason = "Block failed to validate";
397  return false;
398  }
399 
400  if ( currRangeState == Stripe::FETCH ) {
401  // only us who wrote here, block is finalized
402  stripeDesc.blockStates[stripeRangeOff] = Stripe::FINALIZED;
403  _request->_fetchedgoodsize += _blocks[workerRangeOff].len;
404  } else {
405  // others wrote here, we need to check the full checksum
406  if ( recheckChecksum ( workerRangeOff ) ) {
407  stripeDesc.blockStates[stripeRangeOff] = Stripe::FINALIZED;
408  _request->_fetchedgoodsize += _blocks[workerRangeOff].len;
409  } else {
410  // someone messed that block up, set it to refetch but continue since our
411  // data is valid
412  WAR << "#" << _workerno << ": Broken data in COMPETING block, requesting refetch. Stealing is: " << _request->_stealing << endl;
413  stripeDesc.blockStates[stripeRangeOff] = Stripe::REFETCH;
414  }
415  }
416  return true;
417 }
418 
419 size_t
420 multifetchworker::headerfunction( char *p, size_t bytes )
421 {
422  size_t l = bytes;
423  if (l > 9 && !strncasecmp(p, "Location:", 9)) {
424  std::string line(p + 9, l - 9);
425  if (line[l - 10] == '\r')
426  line.erase(l - 10, 1);
427  XXX << "#" << _workerno << ": redirecting to" << line << endl;
428  return bytes;
429  }
430 
431  const auto &repSize = _multiByteHandler->reportedFileSize ();
432  if ( repSize && *repSize != _request->_filesize ) {
433  XXX << "#" << _workerno << ": filesize mismatch" << endl;
435  setCurlError("filesize mismatch");
436  return 0;
437  }
438 
439  return bytes;
440 }
441 
442 multifetchworker::multifetchworker(int no, multifetchrequest &request, const Url &url)
443 : MediaCurl(url, Pathname())
444 , _workerno( no )
445 , _maxspeed( request._maxspeed )
446 , _request ( &request )
447 {
448  Url curlUrl( clearQueryString(url) );
449  _urlbuf = curlUrl.asString();
451  if (_curl)
452  XXX << "reused worker from pool" << endl;
453  if (!_curl && !(_curl = curl_easy_init()))
454  {
456  setCurlError("curl_easy_init failed");
457  return;
458  }
459 
460  if ( url.getScheme() == "http" || url.getScheme() == "https" )
462 
463  setupHandle();
464  checkdns();
465 }
466 
468 {
469  try {
470  setupEasy();
471  } catch (Exception &ex) {
472  curl_easy_cleanup(_curl);
473  _curl = 0;
475  setCurlError("curl_easy_setopt failed");
476  return false;
477  }
478  curl_easy_setopt(_curl, CURLOPT_PRIVATE, this);
479  curl_easy_setopt(_curl, CURLOPT_URL, _urlbuf.c_str());
480 
481  // if this is the same host copy authorization
482  // (the host check is also what curl does when doing a redirect)
483  // (note also that unauthorized exceptions are thrown with the request host)
484  if ( _url.getHost() == _request->_context->_url.getHost()) {
488  if ( _settings.userPassword().size() ) {
489  curl_easy_setopt(_curl, CURLOPT_USERPWD, _settings.userPassword().c_str());
490  std::string use_auth = _settings.authType();
491  if (use_auth.empty())
492  use_auth = "digest,basic"; // our default
493  long auth = CurlAuthData::auth_type_str2long(use_auth);
494  if( auth != CURLAUTH_NONE)
495  {
496  XXX << "#" << _workerno << ": Enabling HTTP authentication methods: " << use_auth
497  << " (CURLOPT_HTTPAUTH=" << auth << ")" << std::endl;
498  curl_easy_setopt(_curl, CURLOPT_HTTPAUTH, auth);
499  }
500  }
501  }
502  return true;
503 }
504 
506 {
507  if (_curl)
508  {
510  curl_multi_remove_handle(_request->_multi, _curl);
511  if (_state == WORKER_DONE || _state == WORKER_SLEEP)
512  {
513 #if CURLVERSION_AT_LEAST(7,15,5)
514  curl_easy_setopt(_curl, CURLOPT_MAX_RECV_SPEED_LARGE, (curl_off_t)0);
515 #endif
516  curl_easy_setopt(_curl, CURLOPT_PRIVATE, (void *)0);
517  curl_easy_setopt(_curl, CURLOPT_WRITEFUNCTION, (void *)0);
518  curl_easy_setopt(_curl, CURLOPT_WRITEDATA, (void *)0);
519  curl_easy_setopt(_curl, CURLOPT_HEADERFUNCTION, (void *)0);
520  curl_easy_setopt(_curl, CURLOPT_HEADERDATA, (void *)0);
522  }
523  else
524  curl_easy_cleanup(_curl);
525  _curl = 0;
526  }
527  if (_pid)
528  {
529  kill(_pid, SIGKILL);
530  int status = 0;
531  zyppng::eintrSafeCall( waitpid, _pid, &status, 0);
532  _pid = 0;
533  }
534  if (_dnspipe != -1)
535  {
536  close(_dnspipe);
537  _dnspipe = -1;
538  }
539  // the destructor in MediaCurl doesn't call disconnect() if
540  // the media is not attached, so we do it here manually
541  disconnectFrom();
542 }
543 
544 static inline bool env_isset(const std::string& name)
545 {
546  const char *s = getenv(name.c_str());
547  return s && *s ? true : false;
548 }
549 
550 void
552 {
553  std::string host = _url.getHost();
554 
555  if (host.empty())
556  return;
557 
558  if (_request->_context->isDNSok(host))
559  return;
560 
561  // no need to do dns checking for numeric hosts
562  char addrbuf[128];
563  if (inet_pton(AF_INET, host.c_str(), addrbuf) == 1)
564  return;
565  if (inet_pton(AF_INET6, host.c_str(), addrbuf) == 1)
566  return;
567 
568  // no need to do dns checking if we use a proxy
569  if (!_settings.proxy().empty())
570  return;
571  if (env_isset("all_proxy") || env_isset("ALL_PROXY"))
572  return;
573  std::string schemeproxy = _url.getScheme() + "_proxy";
574  if (env_isset(schemeproxy))
575  return;
576  if (schemeproxy != "http_proxy")
577  {
578  std::transform(schemeproxy.begin(), schemeproxy.end(), schemeproxy.begin(), ::toupper);
579  if (env_isset(schemeproxy))
580  return;
581  }
582 
583  XXX << "checking DNS lookup of " << host << endl;
584  int pipefds[2];
585  if (pipe(pipefds))
586  {
588  setCurlError("DNS pipe creation failed");
589  return;
590  }
591  _pid = fork();
592  if (_pid == pid_t(-1))
593  {
594  close(pipefds[0]);
595  close(pipefds[1]);
596  _pid = 0;
598  setCurlError("DNS checker fork failed");
599  return;
600  }
601  else if (_pid == 0)
602  {
603  close(pipefds[0]);
604  // XXX: close all other file descriptors
605  struct addrinfo *ai = nullptr, aihints;
606  memset(&aihints, 0, sizeof(aihints));
607  aihints.ai_family = PF_UNSPEC;
608  int tstsock = socket(PF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0);
609  if (tstsock == -1)
610  aihints.ai_family = PF_INET;
611  else
612  close(tstsock);
613  aihints.ai_socktype = SOCK_STREAM;
614  aihints.ai_flags = AI_CANONNAME;
615  unsigned int connecttimeout = _request->_connect_timeout;
616  if (connecttimeout)
617  alarm(connecttimeout);
618  signal(SIGALRM, SIG_DFL);
619  if (getaddrinfo(host.c_str(), NULL, &aihints, &ai))
620  _exit(1);
621  _exit(0);
622  }
623  close(pipefds[1]);
624  _dnspipe = pipefds[0];
626 }
627 
628 void
629 multifetchworker::adddnsfd(std::vector<GPollFD> &waitFds)
630 {
631  if (_state != WORKER_LOOKUP)
632  return;
633 
634  waitFds.push_back (
635  GPollFD {
636  .fd = _dnspipe,
637  .events = G_IO_IN | G_IO_HUP | G_IO_ERR,
638  .revents = 0
639  });
640 }
641 
642 void
643 multifetchworker::dnsevent( const std::vector<GPollFD> &waitFds )
644 {
645  bool hasEvent = std::any_of( waitFds.begin (), waitFds.end(),[this]( const GPollFD &waitfd ){
646  return ( waitfd.fd == _dnspipe && waitfd.revents != 0 );
647  });
648 
649  if (_state != WORKER_LOOKUP || !hasEvent)
650  return;
651  int status = 0;
652  zyppng::eintrSafeCall( waitpid, _pid, &status, 0);
653  _pid = 0;
654  if (_dnspipe != -1)
655  {
656  close(_dnspipe);
657  _dnspipe = -1;
658  }
659  if (!WIFEXITED(status))
660  {
662  setCurlError("DNS lookup failed");
664  return;
665  }
666  int exitcode = WEXITSTATUS(status);
667  XXX << "#" << _workerno << ": DNS lookup returned " << exitcode << endl;
668  if (exitcode != 0)
669  {
671  setCurlError("DNS lookup failed");
673  return;
674  }
676  nextjob();
677 }
678 
679 bool multifetchworker::recheckChecksum( off_t workerRangeIdx )
680 {
681  // XXX << "recheckChecksum block " << _blkno << endl;
682  if (!_request->_fp || !_datasize || !_blocks.size() )
683  return true;
684 
685  auto &blk = _blocks[workerRangeIdx];
686  if ( !blk._digest )
687  return true;
688 
689  const auto currOf = ftell( _request->_fp );
690  if ( currOf == -1 )
691  return false;
692 
693  if (fseeko(_request->_fp, blk.start, SEEK_SET))
694  return false;
695 
696  zypp::Digest newDig = blk._digest->clone();
697 
698  char buf[4096];
699  size_t l = blk.len;
700  while (l) {
701  size_t cnt = l > sizeof(buf) ? sizeof(buf) : l;
702  if (fread(buf, cnt, 1, _request->_fp) != 1)
703  return false;
704  newDig.update(buf, cnt);
705  l -= cnt;
706  }
707 
708  if (fseeko(_request->_fp, currOf, SEEK_SET))
709  return false;
710 
711  blk._digest = std::move(newDig);
712  if (!_multiByteHandler->validateRange(blk)) {
713  WAR << "#" << _workerno << " Stripe: " << _stripe << ": Stripe-Block: " << _rangeToStripeBlock[workerRangeIdx] << " failed to validate" << endl;
714  return false;
715  }
716 
717  return true;
718 }
719 
724 {
725  UByteArray sum;
726  std::optional<zypp::Digest> digest;
727  std::optional<size_t> relDigLen;
728  std::optional<size_t> blkSumPad;
729 
730  const auto &blk = _request->_blklist.getBlock( blkNo );
731  if ( _request->_blklist.haveChecksum ( blkNo ) ) {
732  sum = _request->_blklist.getChecksum( blkNo );
733  relDigLen = sum.size( );
734  blkSumPad = _request->_blklist.checksumPad( );
735  digest = zypp::Digest();
736  digest->create( _request->_blklist.getChecksumType() );
737  }
738 
740  blk.off,
741  blk.size,
742  std::move(digest),
743  std::move(sum),
744  {}, // empty user data
745  std::move(relDigLen),
746  std::move(blkSumPad) );
747 }
748 
750 {
751  if (!_request->_stealing)
752  {
753  XXX << "start stealing!" << endl;
754  _request->_stealing = true;
755  }
756 
757  multifetchworker *best = 0; // best choice for the worker we want to compete with
758  double now = 0;
759 
760  // look through all currently running workers to find the best candidate we
761  // could steal from
762  for (auto workeriter = _request->_workers.begin(); workeriter != _request->_workers.end(); ++workeriter)
763  {
764  multifetchworker *worker = workeriter->get();
765  if (worker == this)
766  continue;
767  if (worker->_pass == -1)
768  continue; // do not steal!
769  if (worker->_state == WORKER_DISCARD || worker->_state == WORKER_DONE || worker->_state == WORKER_SLEEP || !worker->_datasize)
770  continue; // do not steal finished jobs
771  if (!worker->_avgspeed && worker->_datareceived)
772  {
773  // calculate avg speed for the worker if that was not done yet
774  if (!now)
775  now = currentTime();
776  if (now > worker->_starttime)
777  worker->_avgspeed = worker->_datareceived / (now - worker->_starttime);
778  }
779  // only consider worker who still have work
780  if ( worker->_datasize - worker->_datareceived <= 0 )
781  continue;
782  if (!best || best->_pass > worker->_pass)
783  {
784  best = worker;
785  continue;
786  }
787  if (best->_pass < worker->_pass)
788  continue;
789  // if it is the same stripe, our current best choice is competing with the worker we are looking at
790  // we need to check if we are faster than the fastest one competing for this stripe, so we want the best.
791  // Otherwise the worst.
792  if (worker->_stripe == best->_stripe)
793  {
794  if ((worker->_datasize - worker->_datareceived) * best->_avgspeed < (best->_datasize - best->_datareceived) * worker->_avgspeed)
795  best = worker;
796  }
797  else
798  {
799  if ((worker->_datasize - worker->_datareceived) * best->_avgspeed > (best->_datasize - best->_datareceived) * worker->_avgspeed)
800  best = worker;
801  }
802  }
803  if (!best)
804  {
807  _request->_finished = true;
808  return;
809  }
810  // do not sleep twice
811  if (_state != WORKER_SLEEP)
812  {
813  if (!_avgspeed && _datareceived)
814  {
815  if (!now)
816  now = currentTime();
817  if (now > _starttime)
818  _avgspeed = _datareceived / (now - _starttime);
819  }
820 
821  // lets see if we should sleep a bit
822  XXX << "me #" << _workerno << ": " << _avgspeed << ", size " << best->_datasize << endl;
823  XXX << "best #" << best->_workerno << ": " << best->_avgspeed << ", size " << (best->_datasize - best->_datareceived) << endl;
824 
825  // check if we could download the full data from best faster than best could download its remaining data
826  if ( _avgspeed && best->_avgspeed // we and best have average speed information
827  && _avgspeed <= best->_avgspeed ) // and we are not faster than best
828  {
829  if (!now)
830  now = currentTime();
831  double sl = (best->_datasize - best->_datareceived) / best->_avgspeed * 2;
832  if (sl > 1)
833  sl = 1;
834  XXX << "#" << _workerno << ": going to sleep for " << sl * 1000 << " ms" << endl;
835  _sleepuntil = now + sl;
838  return;
839  }
840  }
841 
842  _competing = true;
843  best->_competing = true;
844  _stripe = best->_stripe;
845 
846  best->_pass++;
847  _pass = best->_pass;
848 
849  runjob();
850 }
851 
852 void
854 {
855  for ( auto workeriter = _request->_workers.begin(); workeriter != _request->_workers.end(); ++workeriter)
856  {
857  multifetchworker *worker = workeriter->get();
858  if (worker == this)
859  continue;
860  if (worker->_stripe == _stripe)
861  {
862  if (worker->_state == WORKER_FETCH)
863  worker->_state = WORKER_DISCARD;
864  worker->_pass = -1; /* do not steal this one, we already have it */
865  }
866  }
867 }
868 
870 {
871  _datasize = 0;
872  _blocks.clear();
873 
874  // claim next stripe for us, or steal if there nothing left to claim
876  stealjob();
877  return;
878  }
879 
881  runjob();
882 }
883 
885 {
886  _datasize = 0;
887  _blocks.clear ();
888  _rangeToStripeBlock.clear ();
889 
890  auto &stripeDesc = _request->_requiredStripes[_stripe];
891  for ( uint i = 0; i < stripeDesc.blocks.size(); i++ ) {
892  // ignore verified and finalized ranges
893  if( stripeDesc.blockStates[i] == Stripe::FINALIZED ) {
894  continue;
895  } else {
896  _blocks.push_back( rangeFromBlock(stripeDesc.blocks[i]) );
897  _rangeToStripeBlock.push_back( i );
898  _datasize += _blocks.back().len;
899  }
900  }
901 
902  if ( _datasize == 0 ) {
903  // no blocks left in this stripe
906  if ( !_request->_activeworkers )
907  _request->_finished = true;
908  return;
909  }
910 
911  DBG << "#" << _workerno << "Done adding blocks to download, going to download: " << _blocks.size() << " nr of block with " << _datasize << " nr of bytes" << std::endl;
912 
913  _multiByteHandler.reset( nullptr );
914  _multiByteHandler = std::make_unique<MultiByteHandler>(_protocolMode, _curl, _blocks, *this );
916  _datareceived = 0;
917  run();
918 }
919 
921 {
922  bool hadRangeFail = _multiByteHandler->lastError() == MultiByteHandler::Code::RangeFail;
923  if ( !_multiByteHandler->prepareToContinue() ) {
924  setCurlError(_multiByteHandler->lastErrorMessage().c_str());
925  return false;
926  }
927 
928  if ( hadRangeFail ) {
929  // we reset the handle to default values. We do this to not run into
930  // "transfer closed with outstanding read data remaining" error CURL sometimes returns when
931  // we cancel a connection because of a range error to request a smaller batch.
932  // The error will still happen but much less frequently than without resetting the handle.
933  //
934  // Note: Even creating a new handle will NOT fix the issue
935  curl_easy_reset( _curl );
936  if ( !setupHandle())
937  return false;
938  }
939 
940  run();
941  return true;
942 }
943 
944 void
946 {
947  if (_state == WORKER_BROKEN || _state == WORKER_DONE)
948  return; // just in case...
949 
950  if ( !_multiByteHandler->prepare() ) {
953  setCurlError(_multiByteHandler->lastErrorMessage ().c_str());
954  return;
955  }
956 
957  if (curl_multi_add_handle(_request->_multi, _curl) != CURLM_OK) {
960  setCurlError("curl_multi_add_handle failed");
961  return;
962  }
963 
964  _request->_havenewjob = true;
966 }
967 
968 
970 
971 
972 multifetchrequest::multifetchrequest(const MediaMultiCurl *context, Pathname filename, Url baseurl, CURLM *multi, FILE *fp, callback::SendReport<DownloadProgressReport> *report, MediaBlockList &&blklist, off_t filesize)
973  : internal::CurlPollHelper::CurlPoll{ multi }
974  , _context(context)
975  , _filename(std::move(filename))
976  , _baseurl(std::move(baseurl))
977  , _fp(fp)
978  , _report(report)
979  , _blklist(std::move(blklist))
980  , _filesize(filesize)
981  , _starttime(currentTime())
982  , _timeout(context->_settings.timeout())
983  , _connect_timeout(context->_settings.connectTimeout())
984  , _maxspeed(context->_settings.maxDownloadSpeed())
985  , _maxworkers(context->_settings.maxConcurrentConnections())
986  {
987  _lastperiodstart = _lastprogress = _starttime;
988  if (_maxworkers > MAXURLS)
989  _maxworkers = MAXURLS;
990  if (_maxworkers <= 0)
991  _maxworkers = 1;
992 
993  // calculate the total size of our download
994  for (size_t blkno = 0; blkno < _blklist.numBlocks(); blkno++)
995  _totalsize += _blklist.getBlock(blkno).size;
996 
997  // equally distribute the data we want to download over all workers
998  _defaultBlksize = makeBlksize( _maxworkers, _totalsize );
999 
1000  // lets build stripe informations
1001  zypp::ByteCount currStripeSize = 0;
1002  for (size_t blkno = 0; blkno < _blklist.numBlocks(); blkno++) {
1003 
1004  const MediaBlock &blk = _blklist.getBlock(blkno);
1005  if ( _requiredStripes.empty() || currStripeSize >= _defaultBlksize ) {
1006  _requiredStripes.push_back( Stripe{} );
1007  currStripeSize = 0;
1008  }
1009 
1010  _requiredStripes.back().blocks.push_back(blkno);
1011  _requiredStripes.back().blockStates.push_back(Stripe::PENDING);
1012  currStripeSize += blk.size;
1013  }
1014 
1015  MIL << "Downloading " << _blklist.numBlocks() << " blocks via " << _requiredStripes.size() << " stripes on " << _maxworkers << " connections." << endl;
1016 }
1017 
1019 {
1020  _workers.clear();
1021 }
1022 
1023 void
1024 multifetchrequest::run(std::vector<Url> &urllist)
1025 {
1026  int workerno = 0;
1027  std::vector<Url>::iterator urliter = urllist.begin();
1028 
1029  internal::CurlPollHelper _curlHelper(*this);
1030 
1031  // kickstart curl
1032  CURLMcode mcode = _curlHelper.handleTimout();
1033  if (mcode != CURLM_OK)
1034  ZYPP_THROW(MediaCurlException(_baseurl, "curl_multi_socket_action", "unknown error"));
1035 
1036  for (;;)
1037  {
1038  // list of all fds we want to poll
1039  std::vector<GPollFD> waitFds;
1040  int dnsFdCount = 0;
1041 
1042  if (_finished)
1043  {
1044  XXX << "finished!" << endl;
1045  break;
1046  }
1047 
1048  if ((int)_activeworkers < _maxworkers && urliter != urllist.end() && _workers.size() < MAXURLS)
1049  {
1050  // spawn another worker!
1051  _workers.push_back(std::make_unique<multifetchworker>(workerno++, *this, *urliter));
1052  auto &worker = _workers.back();
1053  if (worker->_state != WORKER_BROKEN)
1054  {
1055  _activeworkers++;
1056  if (worker->_state != WORKER_LOOKUP)
1057  {
1058  worker->nextjob();
1059  }
1060  else
1061  _lookupworkers++;
1062  }
1063  ++urliter;
1064  continue;
1065  }
1066  if (!_activeworkers)
1067  {
1068  WAR << "No more active workers!" << endl;
1069  // show the first worker error we find
1070  for (auto workeriter = _workers.begin(); workeriter != _workers.end(); ++workeriter)
1071  {
1072  if ((*workeriter)->_state != WORKER_BROKEN)
1073  continue;
1074  ZYPP_THROW(MediaCurlException(_baseurl, "Server error", (*workeriter)->curlError()));
1075  }
1076  break;
1077  }
1078 
1079  if (_lookupworkers)
1080  for (auto workeriter = _workers.begin(); workeriter != _workers.end(); ++workeriter)
1081  (*workeriter)->adddnsfd( waitFds );
1082 
1083  // if we added a new job we have to call multi_perform once
1084  // to make it show up in the fd set. do not sleep in this case.
1085  int timeoutMs = _havenewjob ? 0 : 200;
1086  if ( _sleepworkers && !_havenewjob ) {
1087  if (_minsleepuntil == 0) {
1088  for (auto workeriter = _workers.begin(); workeriter != _workers.end(); ++workeriter) {
1089  multifetchworker *worker = workeriter->get();
1090  if (worker->_state != WORKER_SLEEP)
1091  continue;
1092  if (!_minsleepuntil || _minsleepuntil > worker->_sleepuntil)
1093  _minsleepuntil = worker->_sleepuntil;
1094  }
1095  }
1096  double sl = _minsleepuntil - currentTime();
1097  if (sl < 0) {
1098  sl = 0;
1099  _minsleepuntil = 0;
1100  }
1101  if (sl < .2)
1102  timeoutMs = sl * 1000;
1103  }
1104 
1105  if ( _curlHelper.timeout_ms.has_value() )
1106  timeoutMs = std::min<long>( timeoutMs, _curlHelper.timeout_ms.value() );
1107 
1108  dnsFdCount = waitFds.size(); // remember how many dns fd's we have
1109  waitFds.insert( waitFds.end(), _curlHelper.socks.begin(), _curlHelper.socks.end() ); // add the curl fd's to the poll data
1110 
1111  int r = zypp_detail::zypp_poll( waitFds, timeoutMs );
1112  if ( r == -1 )
1113  ZYPP_THROW(MediaCurlException(_baseurl, "zypp_poll() failed", "unknown error"));
1114  if ( r != 0 && _lookupworkers ) {
1115  for (auto workeriter = _workers.begin(); workeriter != _workers.end(); ++workeriter)
1116  {
1117  multifetchworker *worker = workeriter->get();
1118  if (worker->_state != WORKER_LOOKUP)
1119  continue;
1120  (*workeriter)->dnsevent( waitFds );
1121  if (worker->_state != WORKER_LOOKUP)
1122  _lookupworkers--;
1123  }
1124  }
1125  _havenewjob = false;
1126 
1127  // run curl
1128  if ( r == 0 ) {
1129  CURLMcode mcode = _curlHelper.handleTimout();
1130  if (mcode != CURLM_OK)
1131  ZYPP_THROW(MediaCurlException(_baseurl, "curl_multi_socket_action", "unknown error"));
1132  } else {
1133  CURLMcode mcode = _curlHelper.handleSocketActions( waitFds, dnsFdCount );
1134  if (mcode != CURLM_OK)
1135  ZYPP_THROW(MediaCurlException(_baseurl, "curl_multi_socket_action", "unknown error"));
1136  }
1137 
1138  double now = currentTime();
1139 
1140  // update periodavg
1141  if (now > _lastperiodstart + .5)
1142  {
1143  if (!_periodavg)
1145  else
1148  _lastperiodstart = now;
1149  }
1150 
1151  // wake up sleepers
1152  if (_sleepworkers)
1153  {
1154  for (auto workeriter = _workers.begin(); workeriter != _workers.end(); ++workeriter)
1155  {
1156  multifetchworker *worker = workeriter->get();
1157  if (worker->_state != WORKER_SLEEP)
1158  continue;
1159  if (worker->_sleepuntil > now)
1160  continue;
1161  if (_minsleepuntil == worker->_sleepuntil)
1162  _minsleepuntil = 0;
1163  XXX << "#" << worker->_workerno << ": sleep done, wake up" << endl;
1164  _sleepworkers--;
1165  // nextjob changes the state
1166  worker->nextjob();
1167  }
1168  }
1169 
1170  // collect all curl results, (re)schedule jobs
1171  CURLMsg *msg = nullptr;
1172  int nqueue = 0;
1173  while ((msg = curl_multi_info_read(_multi, &nqueue)) != 0)
1174  {
1175  if (msg->msg != CURLMSG_DONE)
1176  continue;
1177  CURL *easy = msg->easy_handle;
1178  CURLcode cc = msg->data.result;
1179  multifetchworker *worker = nullptr;
1180 
1181  if (curl_easy_getinfo(easy, CURLINFO_PRIVATE, &worker) != CURLE_OK)
1182  ZYPP_THROW(MediaCurlException(_baseurl, "curl_easy_getinfo", "unknown error"));
1183 
1184  if (worker->_datareceived && now > worker->_starttime) {
1185  if (worker->_avgspeed)
1186  worker->_avgspeed = (worker->_avgspeed + worker->_datareceived / (now - worker->_starttime)) / 2;
1187  else
1188  worker->_avgspeed = worker->_datareceived / (now - worker->_starttime);
1189  }
1190 
1191  XXX << "#" << worker->_workerno << " done code " << cc << " speed " << worker->_avgspeed << endl;
1192  curl_multi_remove_handle(_multi, easy);
1193 
1194  const auto &setWorkerBroken = [&]( const std::string &str = {} ){
1195  worker->_state = WORKER_BROKEN;
1196  if ( !str.empty () )
1197  worker->setCurlError(str.c_str());
1198  _activeworkers--;
1199 
1200  if (!_activeworkers && !(urliter != urllist.end() && _workers.size() < MAXURLS)) {
1201  // end of workers reached! goodbye!
1202  worker->evaluateCurlCode(Pathname(), cc, false);
1203  }
1204  };
1205 
1206  if ( !worker->_multiByteHandler ) {
1207  WAR << "#" << worker->_workerno << ": has no multibyte handler, this is a bug" << endl;
1208  setWorkerBroken("Multibyte handler error");
1209  continue;
1210  }
1211 
1212  // tell the worker to finalize the current block
1213  worker->_multiByteHandler->finalize();
1214 
1215  if ( worker->_multiByteHandler->hasMoreWork() && ( cc == CURLE_OK || worker->_multiByteHandler->canRecover() ) ) {
1216 
1217  WAR << "#" << worker->_workerno << ": still has work to do or can recover from a error, continuing the job!" << endl;
1218  // the current job is not done, or we failed and need to try more, enqueue and start again
1219  if ( !worker->continueJob() ) {
1220  WAR << "#" << worker->_workerno << ": failed to continue (" << worker->_multiByteHandler->lastErrorMessage() << ")" << endl;
1221  setWorkerBroken( worker->_multiByteHandler->lastErrorMessage() );
1222  }
1223  continue;
1224  }
1225 
1226  // --- from here on worker has no more ranges in its current job, or had a error it can't recover from ---
1227 
1228  if ( cc != CURLE_OK ) {
1229  if ( worker->_state != WORKER_DISCARD ) {
1230  // something went wrong and we can not recover, broken worker!
1231  setWorkerBroken();
1232  continue;
1233  } else {
1234  WAR << "#" << worker->_workerno << ": failed, but was set to discard, reusing for new requests" << endl;
1235  }
1236  } else {
1237 
1238  // we got what we asked for, maybe. Lets see if all ranges have been marked as finalized
1239  if( !worker->_multiByteHandler->verifyData() ) {
1240  WAR << "#" << worker->_workerno << ": error: " << worker->_multiByteHandler->lastErrorMessage() << ", disable worker" << endl;
1241  setWorkerBroken();
1242  continue;
1243  }
1244 
1245  // from here on we know THIS worker only got data that verified
1246  // now lets see if the stripe was finished too
1247  // stripe blocks can now be only in FINALIZED or ERROR states
1248  if (worker->_state == WORKER_FETCH ) {
1249  if ( worker->_competing ) {
1250  worker->disableCompetition ();
1251  }
1252  auto &wrkerStripe = _requiredStripes[worker->_stripe];
1253  bool done = std::all_of( wrkerStripe.blockStates.begin(), wrkerStripe.blockStates.begin(), []( const Stripe::RState s ) { return s == Stripe::FINALIZED; } );
1254  if ( !done ) {
1255  // all ranges that are not finalized are in a bogus state, refetch them
1256  std::for_each( wrkerStripe.blockStates.begin(), wrkerStripe.blockStates.begin(), []( Stripe::RState &s ) {
1257  if ( s != Stripe::FINALIZED)
1258  s = Stripe::PENDING;
1259  });
1260 
1261  _finished = false; //reset finished flag
1262  worker->runjob();
1263  continue;
1264  }
1265  }
1266 
1267  // make bad workers ( bad as in really slow ) sleep a little
1268  double maxavg = 0;
1269  int maxworkerno = 0;
1270  int numbetter = 0;
1271  for (auto workeriter = _workers.begin(); workeriter != _workers.end(); ++workeriter)
1272  {
1273  multifetchworker *oworker = workeriter->get();
1274  if (oworker->_state == WORKER_BROKEN)
1275  continue;
1276  if (oworker->_avgspeed > maxavg)
1277  {
1278  maxavg = oworker->_avgspeed;
1279  maxworkerno = oworker->_workerno;
1280  }
1281  if (oworker->_avgspeed > worker->_avgspeed)
1282  numbetter++;
1283  }
1284  if (maxavg && !_stealing)
1285  {
1286  double ratio = worker->_avgspeed / maxavg;
1287  ratio = 1 - ratio;
1288  if (numbetter < 3) // don't sleep that much if we're in the top two
1289  ratio = ratio * ratio;
1290  if (ratio > .01)
1291  {
1292  XXX << "#" << worker->_workerno << ": too slow ("<< ratio << ", " << worker->_avgspeed << ", #" << maxworkerno << ": " << maxavg << "), going to sleep for " << ratio * 1000 << " ms" << endl;
1293  worker->_sleepuntil = now + ratio;
1294  worker->_state = WORKER_SLEEP;
1295  _sleepworkers++;
1296  continue;
1297  }
1298  }
1299 
1300  // do rate control (if requested)
1301  // should use periodavg, but that's not what libcurl does
1302  if (_maxspeed && now > _starttime)
1303  {
1304  double avg = _fetchedsize / (now - _starttime);
1305  avg = worker->_maxspeed * _maxspeed / avg;
1306  if (avg < _maxspeed / _maxworkers)
1307  avg = _maxspeed / _maxworkers;
1308  if (avg > _maxspeed)
1309  avg = _maxspeed;
1310  if (avg < 1024)
1311  avg = 1024;
1312  worker->_maxspeed = avg;
1313 #if CURLVERSION_AT_LEAST(7,15,5)
1314  curl_easy_setopt(worker->_curl, CURLOPT_MAX_RECV_SPEED_LARGE, (curl_off_t)(avg));
1315 #endif
1316  }
1317 
1318  worker->nextjob();
1319  }
1320 
1321  if ( _filesize > 0 && _fetchedgoodsize > _filesize ) {
1323  }
1324  }
1325 
1326  // send report
1327  if (_report)
1328  {
1329  int percent = _totalsize ? (100 * (_fetchedgoodsize + _fetchedsize)) / (_totalsize + _fetchedsize) : 0;
1330 
1331  double avg = 0;
1332  if (now > _starttime)
1333  avg = _fetchedsize / (now - _starttime);
1334  if (!(*(_report))->progress(percent, _baseurl, avg, _lastperiodstart == _starttime ? avg : _periodavg))
1335  ZYPP_THROW(MediaCurlException(_baseurl, "User abort", "cancelled"));
1336  }
1337 
1338  if (_timeout && now - _lastprogress > _timeout)
1339  break;
1340  }
1341 
1342  if (!_finished)
1344 
1345  // print some download stats
1346  WAR << "overall result" << endl;
1347  for (auto workeriter = _workers.begin(); workeriter != _workers.end(); ++workeriter)
1348  {
1349  multifetchworker *worker = workeriter->get();
1350  WAR << "#" << worker->_workerno << ": state: " << worker->_state << " received: " << worker->_received << " url: " << worker->_url << endl;
1351  }
1352 }
1353 
1354 inline zypp::ByteCount multifetchrequest::makeBlksize ( uint maxConns, size_t filesize )
1355 {
1356  // If the calculated strip size is too small and can cause a loss in TCP throughput. Raise
1357  // it to a reasonable value.
1358  return std::max<zypp::ByteCount>( filesize / std::min( std::max<int>( 1, maxConns ) , MAXURLS ), zypp::ByteCount(MIN_STRIPE_SIZE_KB, zypp::ByteCount::K) );
1359 }
1360 
1362 
1363 
1364 MediaMultiCurl::MediaMultiCurl(const Url &url_r, const Pathname & attach_point_hint_r)
1365  : MediaCurl(url_r, attach_point_hint_r)
1366 {
1367  MIL << "MediaMultiCurl::MediaMultiCurl(" << url_r << ", " << attach_point_hint_r << ")" << endl;
1368  _multi = 0;
1370 }
1371 
1373 {
1375  {
1376  curl_slist_free_all(_customHeadersMetalink);
1378  }
1379  if (_multi)
1380  {
1381  curl_multi_cleanup(_multi);
1382  _multi = 0;
1383  }
1384  std::map<std::string, CURL *>::iterator it;
1385  for (it = _easypool.begin(); it != _easypool.end(); it++)
1386  {
1387  CURL *easy = it->second;
1388  if (easy)
1389  {
1390  curl_easy_cleanup(easy);
1391  it->second = NULL;
1392  }
1393  }
1394 }
1395 
1397 {
1399 
1401  {
1402  curl_slist_free_all(_customHeadersMetalink);
1404  }
1405  struct curl_slist *sl = _customHeaders;
1406  for (; sl; sl = sl->next)
1407  _customHeadersMetalink = curl_slist_append(_customHeadersMetalink, sl->data);
1408  //, application/x-zsync
1409  _customHeadersMetalink = curl_slist_append(_customHeadersMetalink, "Accept: */*, application/x-zsync, application/metalink+xml, application/metalink4+xml");
1410 }
1411 
1412 // here we try to suppress all progress coming from a metalink download
1413 // bsc#1021291: Nevertheless send alive trigger (without stats), so UIs
1414 // are able to abort a hanging metalink download via callback response.
1415 int MediaMultiCurl::progressCallback( void *clientp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
1416 {
1417  CURL *_curl = MediaCurl::progressCallback_getcurl(clientp);
1418  if (!_curl)
1419  return MediaCurl::aliveCallback(clientp, dltotal, dlnow, ultotal, ulnow);
1420 
1421  // bsc#408814: Don't report any sizes before we don't have data on disk. Data reported
1422  // due to redirection etc. are not interesting, but may disturb filesize checks.
1423  FILE *fp = 0;
1424  if ( curl_easy_getinfo( _curl, CURLINFO_PRIVATE, &fp ) != CURLE_OK || !fp )
1425  return MediaCurl::aliveCallback( clientp, dltotal, dlnow, ultotal, ulnow );
1426  if ( ftell( fp ) == 0 )
1427  return MediaCurl::aliveCallback( clientp, dltotal, 0.0, ultotal, ulnow );
1428 
1429  // (no longer needed due to the filesize check above?)
1430  // work around curl bug that gives us old data
1431  long httpReturnCode = 0;
1432  if (curl_easy_getinfo(_curl, CURLINFO_RESPONSE_CODE, &httpReturnCode ) != CURLE_OK || httpReturnCode == 0)
1433  return MediaCurl::aliveCallback(clientp, dltotal, dlnow, ultotal, ulnow);
1434 
1435  char *ptr = NULL;
1436  bool ismetalink = false;
1437  if (curl_easy_getinfo(_curl, CURLINFO_CONTENT_TYPE, &ptr) == CURLE_OK && ptr)
1438  {
1439  std::string ct = std::string(ptr);
1440  if (ct.find("application/x-zsync") == 0 || ct.find("application/metalink+xml") == 0 || ct.find("application/metalink4+xml") == 0)
1441  ismetalink = true;
1442  }
1443  if (!ismetalink && dlnow < 256)
1444  {
1445  // can't tell yet, ...
1446  return MediaCurl::aliveCallback(clientp, dltotal, dlnow, ultotal, ulnow);
1447  }
1448  if (!ismetalink)
1449  {
1450  fflush(fp);
1451  ismetalink = looks_like_meta_file(fp) != MetaDataType::None;
1452  DBG << "looks_like_meta_file: " << ismetalink << endl;
1453  }
1454  if (ismetalink)
1455  {
1456  // this is a metalink file change the expected filesize
1458  // we're downloading the metalink file. Just trigger aliveCallbacks
1459  curl_easy_setopt(_curl, CURLOPT_XFERINFOFUNCTION, &MediaCurl::aliveCallback);
1460  return MediaCurl::aliveCallback(clientp, dltotal, dlnow, ultotal, ulnow);
1461  }
1462  curl_easy_setopt(_curl, CURLOPT_XFERINFOFUNCTION, &MediaCurl::progressCallback);
1463  return MediaCurl::progressCallback(clientp, dltotal, dlnow, ultotal, ulnow);
1464 }
1465 
1466 void MediaMultiCurl::doGetFileCopy( const OnMediaLocation &srcFile , const Pathname & target, callback::SendReport<DownloadProgressReport> & report, RequestOptions options ) const
1467 {
1468  Pathname dest = target.absolutename();
1469  if( assert_dir( dest.dirname() ) )
1470  {
1471  DBG << "assert_dir " << dest.dirname() << " failed" << endl;
1472  ZYPP_THROW( MediaSystemException(getFileUrl(srcFile.filename()), "System error on " + dest.dirname().asString()) );
1473  }
1474 
1475  ManagedFile destNew { target.extend( ".new.zypp.XXXXXX" ) };
1476  AutoFILE file;
1477  {
1478  AutoFREE<char> buf { ::strdup( (*destNew).c_str() ) };
1479  if( ! buf )
1480  {
1481  ERR << "out of memory for temp file name" << endl;
1482  ZYPP_THROW(MediaSystemException(getFileUrl(srcFile.filename()), "out of memory for temp file name"));
1483  }
1484 
1485  AutoFD tmp_fd { ::mkostemp( buf, O_CLOEXEC ) };
1486  if( tmp_fd == -1 )
1487  {
1488  ERR << "mkstemp failed for file '" << destNew << "'" << endl;
1489  ZYPP_THROW(MediaWriteException(destNew));
1490  }
1491  destNew = ManagedFile( (*buf), filesystem::unlink );
1492 
1493  file = ::fdopen( tmp_fd, "we" );
1494  if ( ! file )
1495  {
1496  ERR << "fopen failed for file '" << destNew << "'" << endl;
1497  ZYPP_THROW(MediaWriteException(destNew));
1498  }
1499  tmp_fd.resetDispose(); // don't close it here! ::fdopen moved ownership to file
1500  }
1501 
1502  DBG << "dest: " << dest << endl;
1503  DBG << "temp: " << destNew << endl;
1504 
1505  // set IFMODSINCE time condition (no download if not modified)
1506  if( PathInfo(target).isExist() && !(options & OPTION_NO_IFMODSINCE) )
1507  {
1508  curl_easy_setopt(_curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE);
1509  curl_easy_setopt(_curl, CURLOPT_TIMEVALUE, (long)PathInfo(target).mtime());
1510  }
1511  else
1512  {
1513  curl_easy_setopt(_curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_NONE);
1514  curl_easy_setopt(_curl, CURLOPT_TIMEVALUE, 0L);
1515  }
1516  // change header to include Accept: metalink
1517  curl_easy_setopt(_curl, CURLOPT_HTTPHEADER, _customHeadersMetalink);
1518  // change to our own progress funcion
1519  curl_easy_setopt(_curl, CURLOPT_XFERINFOFUNCTION, &progressCallback);
1520  curl_easy_setopt(_curl, CURLOPT_PRIVATE, (*file) ); // important to pass the FILE* explicitly (passing through varargs)
1521  try
1522  {
1523  MediaCurl::doGetFileCopyFile( srcFile, dest, file, report, options );
1524  }
1525  catch (Exception &ex)
1526  {
1527  curl_easy_setopt(_curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_NONE);
1528  curl_easy_setopt(_curl, CURLOPT_TIMEVALUE, 0L);
1529  curl_easy_setopt(_curl, CURLOPT_HTTPHEADER, _customHeaders);
1530  curl_easy_setopt(_curl, CURLOPT_PRIVATE, (void *)0);
1531  ZYPP_RETHROW(ex);
1532  }
1533  curl_easy_setopt(_curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_NONE);
1534  curl_easy_setopt(_curl, CURLOPT_TIMEVALUE, 0L);
1535  curl_easy_setopt(_curl, CURLOPT_HTTPHEADER, _customHeaders);
1536  curl_easy_setopt(_curl, CURLOPT_PRIVATE, (void *)0);
1537  long httpReturnCode = 0;
1538  CURLcode infoRet = curl_easy_getinfo(_curl, CURLINFO_RESPONSE_CODE, &httpReturnCode);
1539  if (infoRet == CURLE_OK)
1540  {
1541  DBG << "HTTP response: " + str::numstring(httpReturnCode) << endl;
1542  if ( httpReturnCode == 304
1543  || ( httpReturnCode == 213 && _url.getScheme() == "ftp" ) ) // not modified
1544  {
1545  DBG << "not modified: " << PathInfo(dest) << endl;
1546  return;
1547  }
1548  }
1549  else
1550  {
1551  WAR << "Could not get the response code." << endl;
1552  }
1553 
1554  MetaDataType ismetalink = MetaDataType::None;
1555 
1556  char *ptr = NULL;
1557  if (curl_easy_getinfo(_curl, CURLINFO_CONTENT_TYPE, &ptr) == CURLE_OK && ptr)
1558  {
1559  std::string ct = std::string(ptr);
1560  if (ct.find("application/x-zsync") == 0 )
1561  ismetalink = MetaDataType::Zsync;
1562  else if (ct.find("application/metalink+xml") == 0 || ct.find("application/metalink4+xml") == 0)
1563  ismetalink = MetaDataType::MetaLink;
1564  }
1565 
1566  if ( ismetalink == MetaDataType::None )
1567  {
1568  // some proxies do not store the content type, so also look at the file to find
1569  // out if we received a metalink (bnc#649925)
1570  fflush(file);
1571  ismetalink = looks_like_meta_file(destNew);
1572  }
1573 
1574  if ( ismetalink != MetaDataType::None )
1575  {
1576  bool userabort = false;
1577  Pathname failedFile = ZConfig::instance().repoCachePath() / "MultiCurl.failed";
1578  file = nullptr; // explicitly close destNew before the parser reads it.
1579  try
1580  {
1581  MediaBlockList bl;
1582  std::vector<Url> urls;
1583  if ( ismetalink == MetaDataType::Zsync ) {
1584  ZsyncParser parser;
1585  parser.parse( destNew );
1586  bl = parser.getBlockList();
1587  urls = parser.getUrls();
1588 
1589  XXX << getFileUrl(srcFile.filename()) << " returned zsync meta data." << std::endl;
1590  } else {
1591  MetaLinkParser mlp;
1592  mlp.parse(destNew);
1593  bl = mlp.getBlockList();
1594  urls = mlp.getUrls();
1595 
1596  XXX << getFileUrl(srcFile.filename()) << " returned metalink meta data." << std::endl;
1597  }
1598 
1599  if ( bl.numBlocks() )
1600  XXX << "With " << bl.numBlocks() << " nr of blocks and a blocksize of " << bl.getBlock(0).size << std::endl;
1601  else
1602  XXX << "With no blocks" << std::endl;
1603 
1604  /*
1605  * gihub issue libzipp:#277 Multicurl backend breaks with MirrorCache and Metalink with unknown filesize.
1606  * Fall back to a normal download if we have no knowledge about the filesize we want to download.
1607  */
1608  if ( !bl.haveFilesize() && ! srcFile.downloadSize() ) {
1609  XXX << "No filesize in metalink file and no expected filesize, aborting multicurl." << std::endl;
1610  ZYPP_THROW( MediaException("Multicurl requires filesize but none was provided.") );
1611  }
1612 
1613 #if 0
1614  Disabling this workaround for now, since we now do zip ranges into bigger requests
1615  /*
1616  * bsc#1191609 In certain locations we do not receive a suitable number of metalink mirrors, and might even
1617  * download chunks serially from one and the same server. In those cases we need to fall back to a normal download.
1618  */
1619  if ( urls.size() < MIN_REQ_MIRRS ) {
1620  ZYPP_THROW( MediaException("Multicurl enabled but not enough mirrors provided") );
1621  }
1622 #endif
1623 
1624  // XXX << bl << endl;
1625  file = fopen((*destNew).c_str(), "w+e");
1626  if (!file)
1627  ZYPP_THROW(MediaWriteException(destNew));
1628  if (PathInfo(target).isExist())
1629  {
1630  XXX << "reusing blocks from file " << target << endl;
1631  bl.reuseBlocks(file, target.asString());
1632  XXX << bl << endl;
1633  }
1634  if (bl.haveChecksum(1) && PathInfo(failedFile).isExist())
1635  {
1636  XXX << "reusing blocks from file " << failedFile << endl;
1637  bl.reuseBlocks(file, failedFile.asString());
1638  XXX << bl << endl;
1639  filesystem::unlink(failedFile);
1640  }
1641  const Pathname& df = srcFile.deltafile();
1642  if (!df.empty())
1643  {
1644  XXX << "reusing blocks from file " << df << endl;
1645  bl.reuseBlocks(file, df.asString());
1646  XXX << bl << endl;
1647  }
1648  try
1649  {
1650  multifetch(srcFile.filename(), file, &urls, &report, std::move(bl), srcFile.downloadSize());
1651  }
1652  catch (MediaCurlException &ex)
1653  {
1654  userabort = ex.errstr() == "User abort";
1655  ZYPP_RETHROW(ex);
1656  }
1657  }
1658  catch (MediaFileSizeExceededException &ex) {
1659  ZYPP_RETHROW(ex);
1660  }
1661  catch (Exception &ex)
1662  {
1663  // something went wrong. fall back to normal download
1664  file = nullptr; // explicitly close destNew before moving it
1665  WAR<< "Failed to multifetch file " << ex << " falling back to single Curl download!" << std::endl;
1666  if (PathInfo(destNew).size() >= 63336)
1667  {
1668  ::unlink(failedFile.asString().c_str());
1669  filesystem::hardlinkCopy(destNew, failedFile);
1670  }
1671  if (userabort)
1672  {
1673  ZYPP_RETHROW(ex);
1674  }
1675  file = fopen((*destNew).c_str(), "w+e");
1676  if (!file)
1677  ZYPP_THROW(MediaWriteException(destNew));
1678 
1679  // use the default progressCallback
1680  curl_easy_setopt(_curl, CURLOPT_XFERINFOFUNCTION, &MediaCurl::progressCallback);
1681  MediaCurl::doGetFileCopyFile(srcFile, dest, file, report, options | OPTION_NO_REPORT_START);
1682  }
1683  }
1684 
1685  if (::fchmod( ::fileno(file), filesystem::applyUmaskTo( 0644 )))
1686  {
1687  ERR << "Failed to chmod file " << destNew << endl;
1688  }
1689 
1690  file.resetDispose(); // we're going to close it manually here
1691  if (::fclose(file))
1692  {
1693  filesystem::unlink(destNew);
1694  ERR << "Fclose failed for file '" << destNew << "'" << endl;
1695  ZYPP_THROW(MediaWriteException(destNew));
1696  }
1697 
1698  if ( rename( destNew, dest ) != 0 )
1699  {
1700  ERR << "Rename failed" << endl;
1702  }
1703  destNew.resetDispose(); // no more need to unlink it
1704 
1705  DBG << "done: " << PathInfo(dest) << endl;
1706 }
1707 
1708 void MediaMultiCurl::multifetch(const Pathname & filename, FILE *fp, std::vector<Url> *urllist, MediaBlockList &&blklist, callback::SendReport<DownloadProgressReport> *report, off_t filesize) const
1709 {
1710  Url baseurl(getFileUrl(filename));
1711  if (filesize == off_t(-1) && blklist.haveFilesize())
1712  filesize = blklist.getFilesize();
1713  if (!blklist.haveBlocks() && filesize != 0) {
1714  if ( filesize == -1 ) {
1715  ZYPP_THROW(MediaException("No filesize and no blocklist, falling back to normal download."));
1716  }
1717 
1718  // build a blocklist on demand just so that we have ranges
1719  MIL << "Generate blocklist, since there was none in the metalink file." << std::endl;
1720 
1721  off_t currOff = 0;
1722  const auto prefSize = multifetchrequest::makeBlksize( _settings.maxConcurrentConnections(), filesize );
1723 
1724  while ( currOff < filesize ) {
1725 
1726  auto blksize = filesize - currOff ;
1727  if ( blksize > prefSize )
1728  blksize = prefSize;
1729 
1730  blklist.addBlock( currOff, blksize );
1731  currOff += blksize;
1732  }
1733 
1734  XXX << "Generated blocklist: " << std::endl << blklist << std::endl << " End blocklist " << std::endl;
1735 
1736  }
1737  if (filesize == 0 || !blklist.numBlocks()) {
1738  checkFileDigest(baseurl, fp, blklist);
1739  return;
1740  }
1741  if (filesize == 0)
1742  return;
1743 
1744  if (!_multi)
1745  {
1746  _multi = curl_multi_init();
1747  if (!_multi)
1749  }
1750 
1751  multifetchrequest req(this, filename, baseurl, _multi, fp, report, std::move(blklist), filesize);
1752  std::vector<Url> myurllist;
1753  for (std::vector<Url>::iterator urliter = urllist->begin(); urliter != urllist->end(); ++urliter)
1754  {
1755  try
1756  {
1757  std::string scheme = urliter->getScheme();
1758  if (scheme == "http" || scheme == "https" || scheme == "ftp" || scheme == "tftp")
1759  {
1760  checkProtocol(*urliter);
1761  myurllist.push_back(internal::propagateQueryParams(*urliter, _url));
1762  }
1763  }
1764  catch (...)
1765  {
1766  }
1767  }
1768  if (!myurllist.size())
1769  myurllist.push_back(baseurl);
1770  req.run(myurllist);
1771  checkFileDigest(baseurl, fp, req.blockList() );
1772 }
1773 
1775 {
1776  if ( !blklist.haveFileChecksum() )
1777  return;
1778  if (fseeko(fp, off_t(0), SEEK_SET))
1779  ZYPP_THROW(MediaCurlException(url, "fseeko", "seek error"));
1780  Digest dig;
1781  blklist.createFileDigest(dig);
1782  char buf[4096];
1783  size_t l = 0;
1784  while ((l = fread(buf, 1, sizeof(buf), fp)) > 0)
1785  dig.update(buf, l);
1786  if (!blklist.verifyFileDigest(dig))
1787  ZYPP_THROW(MediaCurlException(url, "file verification failed", "checksum error"));
1788 }
1789 
1790 bool MediaMultiCurl::isDNSok(const std::string &host) const
1791 {
1792  return _dnsok.find(host) == _dnsok.end() ? false : true;
1793 }
1794 
1795 void MediaMultiCurl::setDNSok(const std::string &host) const
1796 {
1797  _dnsok.insert(host);
1798 }
1799 
1800 CURL *MediaMultiCurl::fromEasyPool(const std::string &host) const
1801 {
1802  if (_easypool.find(host) == _easypool.end())
1803  return 0;
1804  CURL *ret = _easypool[host];
1805  _easypool.erase(host);
1806  return ret;
1807 }
1808 
1809 void MediaMultiCurl::toEasyPool(const std::string &host, CURL *easy) const
1810 {
1811  CURL *oldeasy = _easypool[host];
1812  _easypool[host] = easy;
1813  if (oldeasy)
1814  curl_easy_cleanup(oldeasy);
1815 }
1816 
1817  } // namespace media
1818 } // namespace zypp
std::string getScheme() const
Returns the scheme name of the URL.
Definition: Url.cc:537
Url getFileUrl(const Pathname &filename) const
concatenate the attach url and the filename to a complete download url
MediaBlockList getBlockList() const
return the block list from the parsed metalink data
#define MIL
Definition: Logger.h:98
constexpr auto MAXURLS
void doGetFileCopy(const OnMediaLocation &srcFile, const Pathname &targetFilename, callback::SendReport< DownloadProgressReport > &_report, RequestOptions options=OPTION_NONE) const override
bool recheckChecksum(off_t blockIdx)
std::vector< Url > getUrls()
return the download urls from the parsed metalink data
Definition: zsyncparser.cc:187
int assert_dir(const Pathname &path, unsigned mode)
Like &#39;mkdir -p&#39;.
Definition: PathInfo.cc:324
The CurlMultiPartHandler class.
std::set< std::string > _dnsok
#define ZYPP_THROW(EXCPT)
Drops a logline and throws the Exception.
Definition: Exception.h:424
Describes a resource file located on a medium.
void dnsevent(const std::vector< GPollFD > &waitFds)
static ZConfig & instance()
Singleton ctor.
Definition: ZConfig.cc:925
void checkProtocol(const Url &url) const
check the url is supported by the curl library
Definition: MediaCurl.cc:401
Implementation class for FTP, HTTP and HTTPS MediaHandler.
Definition: MediaCurl.h:31
zypp::Url propagateQueryParams(zypp::Url url_r, const zypp::Url &template_r)
Definition: curlhelper.cc:401
void setPassword(const std::string &val_r)
sets the auth password
Compute Message Digests (MD5, SHA1 etc)
Definition: Digest.h:37
Store and operate with byte count.
Definition: ByteCount.h:31
static Range make(size_t start, size_t len=0, std::optional< zypp::Digest > &&digest={}, CheckSumBytes &&expectedChkSum=CheckSumBytes(), std::any &&userData=std::any(), std::optional< size_t > digestCompareLen={}, std::optional< size_t > _dataBlockPadding={})
to not add a IFMODSINCE header if target exists
Definition: MediaCurl.h:43
void run(std::vector< Url > &urllist)
const std::string & authType() const
get the allowed authentication types
Pathname extend(const std::string &r) const
Append string r to the last component of the path.
Definition: Pathname.h:175
std::map< std::string, CURL * > _easypool
callback::SendReport< DownloadProgressReport > * _report
String related utilities and Regular expression matching.
void setUsername(const std::string &val_r)
sets the auth username
static double currentTime()
#define XXX
Definition: Logger.h:96
static const Unit MB
1000^2 Byte
Definition: ByteCount.h:61
virtual void setupEasy()
initializes the curl easy handle with the data from the url
Definition: MediaCurl.cc:426
std::vector< MultiByteHandler::Range > _blocks
void parse(const Pathname &filename)
parse a file consisting of zlink data
Definition: zsyncparser.cc:77
void toEasyPool(const std::string &host, CURL *easy) const
AutoDispose<int> calling ::close
Definition: AutoDispose.h:309
const std::string & password() const
auth password
void parse(const Pathname &filename)
parse a file consisting of metalink xml data
CURLMcode handleSocketActions(const std::vector< GPollFD > &actionsFds, int first=0)
Definition: curlhelper.cc:470
int hardlinkCopy(const Pathname &oldpath, const Pathname &newpath)
Create newpath as hardlink or copy of oldpath.
Definition: PathInfo.cc:888
#define ERR
Definition: Logger.h:100
MediaBlockList getBlockList()
return the block list from the parsed metalink data
Definition: zsyncparser.cc:197
const std::string & username() const
auth username
static ByteCount makeBlksize(uint maxConns, size_t filesize)
AutoDispose< const Pathname > ManagedFile
A Pathname plus associated cleanup code to be executed when path is no longer needed.
Definition: ManagedFile.h:27
struct _GPollFD GPollFD
Definition: ZYppImpl.h:26
Container< Ret > transform(Container< Msg, CArgs... > &&val, Transformation &&transformation)
Definition: transform.h:31
static void resetExpectedFileSize(void *clientp, const ByteCount &expectedFileSize)
MediaMultiCurl needs to reset the expected filesize in case a metalink file is downloaded otherwise t...
Definition: MediaCurl.cc:1408
#define ZYPP_RETHROW(EXCPT)
Drops a logline and rethrows, updating the CodeLocation.
Definition: Exception.h:444
const MediaMultiCurl * _context
void setupEasy() override
initializes the curl easy handle with the data from the url
std::string asString() const
Returns a default string representation of the Url object.
Definition: Url.cc:501
bool verifyFileDigest(Digest &digest) const
Url clearQueryString(const Url &url) const
Definition: MediaCurl.cc:382
void setAuthType(const std::string &val_r)
set the allowed authentication types
CURL * fromEasyPool(const std::string &host) const
multifetchrequest * _request
const Url _url
Url to handle.
Definition: MediaHandler.h:113
bool isDNSok(const std::string &host) const
std::vector< GPollFD > socks
Definition: curlhelper_p.h:103
const std::string & asString() const
String representation.
Definition: Pathname.h:93
bool isExist() const
Return whether valid stat info exists.
Definition: PathInfo.h:282
std::vector< Stripe > _requiredStripes
Just inherits Exception to separate media exceptions.
void evaluateCurlCode(const zypp::Pathname &filename, CURLcode code, bool timeout) const
Evaluates a curl return code and throws the right MediaException filename Filename being downloaded c...
Definition: MediaCurl.cc:842
static int progressCallback(void *clientp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
Pathname repoCachePath() const
Path where the caches are kept (/var/cache/zypp)
Definition: ZConfig.cc:1042
std::string getChecksumType() const
const ByteCount & downloadSize() const
The size of the resource on the server.
Pathname dirname() const
Return all but the last component od this path.
Definition: Pathname.h:126
do not send a start ProgressReport
Definition: MediaCurl.h:45
#define WAR
Definition: Logger.h:99
MetaDataType looks_like_meta_file(const Pathname &file)
a single block from the blocklist, consisting of an offset and a size
bool createFileDigest(Digest &digest) const
static int progressCallback(void *clientp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
Callback reporting download progress.
Definition: MediaCurl.cc:1365
void setDNSok(const std::string &host) const
size_t numBlocks() const
return the number of blocks in the blocklist
void multifetch(const Pathname &filename, FILE *fp, std::vector< Url > *urllist, MediaBlockList &&blklist, callback::SendReport< DownloadProgressReport > *report=0, off_t filesize=off_t(-1)) const
const Pathname & filename() const
The path to the resource on the medium.
std::string numstring(char n, int w=0)
Definition: String.h:289
int unlink(const Pathname &path)
Like &#39;unlink&#39;.
Definition: PathInfo.cc:705
std::string asString(unsigned field_width_r=0, unsigned unit_width_r=1) const
Auto selected Unit and precision.
Definition: ByteCount.h:134
void resetDispose()
Set no dispose function.
Definition: AutoDispose.h:171
void doGetFileCopyFile(const OnMediaLocation &srcFile, const Pathname &dest, FILE *file, callback::SendReport< DownloadProgressReport > &report, RequestOptions options=OPTION_NONE) const
Definition: MediaCurl.cc:1202
curl_slist * _customHeaders
Definition: MediaCurl.h:171
SizeType blocks(ByteCount blocksize_r=K) const
Return number of blocks of size blocksize_r (default 1K).
Definition: ByteCount.h:115
MultiByteHandler::Range rangeFromBlock(off_t blockNo) const
const Pathname & deltafile() const
The existing deltafile that can be used to reduce download size ( zchunk or metalink ) ...
static bool env_isset(const std::string &name)
MediaMultiCurl(const Url &url_r, const Pathname &attach_point_hint_r)
constexpr std::string_view FILE("file")
Pathname absolutename() const
Return this path, adding a leading &#39;/&#39; if relative.
Definition: Pathname.h:141
UByteArray getChecksum(size_t blkno) const
Base class for Exception.
Definition: Exception.h:146
Url url() const
Url used.
Definition: MediaHandler.h:503
std::unique_ptr< MultiByteHandler > _multiByteHandler
multifetchrequest(const MediaMultiCurl *context, Pathname filename, Url baseurl, CURLM *multi, FILE *fp, callback::SendReport< DownloadProgressReport > *report, MediaBlockList &&blklist, off_t filesize)
bool any_of(const Container &c, Fnc &&cb)
Definition: Algorithm.h:76
auto eintrSafeCall(Fun &&function, Args &&... args)
const MediaBlock & getBlock(size_t blkno) const
return the offset/size of a block with number blkno
long maxConcurrentConnections() const
Maximum number of concurrent connections for a single transfer.
std::string getHost(EEncoding eflag=zypp::url::E_DECODED) const
Returns the hostname or IP from the URL authority.
Definition: Url.cc:592
curl_slist * _customHeadersMetalink
void disconnectFrom() override
Definition: MediaCurl.cc:714
static CURL * progressCallback_getcurl(void *clientp)
Definition: MediaCurl.cc:1381
MultiFetchWorkerState _state
void setCurlError(const char *error)
Definition: MediaCurl.cc:392
static long auth_type_str2long(std::string &auth_type_str)
Converts a string of comma separated list of authetication type names into a long of ORed CURLAUTH_* ...
Definition: curlauthdata.cc:50
bool haveChecksum(size_t blkno) const
void reuseBlocks(FILE *wfp, const std::string &filename)
std::list< std::unique_ptr< multifetchworker > > _workers
static const Unit K
1024 Byte
Definition: ByteCount.h:46
Wrapper class for ::stat/::lstat.
Definition: PathInfo.h:221
constexpr auto MIN_REQ_MIRRS
std::vector< off_t > _rangeToStripeBlock
AutoDispose<FILE*> calling ::fclose
Definition: AutoDispose.h:320
AutoDispose< void * > _state
mode_t applyUmaskTo(mode_t mode_r)
Modify mode_r according to the current umask ( mode_r & ~getUmask() ).
Definition: PathInfo.h:799
std::vector< Url > getUrls() const
return the download urls from the parsed metalink data
std::optional< long > timeout_ms
Definition: curlhelper_p.h:104
MultiByteHandler::ProtocolMode _protocolMode
std::string userPassword() const
returns the user and password as a user:pass string
Digest clone() const
Returns a clone of the current Digest and returns it.
Definition: Digest.cc:230
int rename(const Pathname &oldpath, const Pathname &newpath)
Like &#39;rename&#39;.
Definition: PathInfo.cc:747
int zypp_poll(std::vector< GPollFD > &fds, int timeout)
Small wrapper around g_poll that additionally listens to the shutdown FD returned by ZYpp::shutdownSi...
Definition: ZYppImpl.cc:313
Easy-to use interface to the ZYPP dependency resolver.
Definition: Application.cc:19
const std::string & proxy() const
proxy host
bool update(const char *bytes, size_t len)
feed data into digest computation algorithm
Definition: Digest.cc:311
constexpr auto MIN_STRIPE_SIZE_KB
std::vector< off_t > blocks
static int aliveCallback(void *clientp, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow)
Callback sending just an alive trigger to the UI, without stats (e.g.
Definition: MediaCurl.cc:1351
void adddnsfd(std::vector< GPollFD > &waitFds)
Url manipulation class.
Definition: Url.h:91
#define DBG
Definition: Logger.h:97
ByteCount df(const Pathname &path_r)
Report free disk space on a mounted file system.
Definition: PathInfo.cc:1163
void checkFileDigest(Url &url, FILE *fp, MediaBlockList &blklist) const
std::vector< RState > blockStates