-// AcqIndexDiffs::AcqIndexDiffs - Constructor
-// ---------------------------------------------------------------------
-/* The package diff is added to the queue. one object is constructed
- * for each diff and the index
- */
-pkgAcqIndexDiffs::pkgAcqIndexDiffs(pkgAcquire *Owner,
- string URI,string URIDesc,string ShortDesc,
- string ExpectedMD5, vector<DiffInfo> diffs)
- : Item(Owner), RealURI(URI), ExpectedMD5(ExpectedMD5), available_patches(diffs)
-{
-
- DestFile = _config->FindDir("Dir::State::lists") + "partial/";
- DestFile += URItoFileName(URI);
-
- Debug = _config->FindB("Debug::pkgAcquire::Diffs",false);
-
- Desc.Description = URIDesc;
- Desc.Owner = this;
- Desc.ShortDesc = ShortDesc;
-
- CurrentPackagesFile = _config->FindDir("Dir::State::lists");
- CurrentPackagesFile += URItoFileName(RealURI);
-
- if(Debug) {
- std::clog << "pkgAcqIndexDiffs::pkgAcqIndexDiffs(): "
- << CurrentPackagesFile << std::endl;
- }
-
- if(!FileExists(CurrentPackagesFile) ||
- !_config->FindB("Acquire::Diffs",true)) {
- // we don't have a pkg file or we don't want to queue
- if(Debug)
- std::clog << "No index file or canceld by user" << std::endl;
- Failed("", NULL);
- return;
- }
-
- if(available_patches.size() == 0)
- QueueDiffIndex(URI);
- else
- QueueNextDiff();
-}
-
-void pkgAcqIndexDiffs::QueueDiffIndex(string URI)
-{
- Desc.URI = URI + ".diff/Index";
- Desc.Description = Description + "IndexDiff";
- DestFile = _config->FindDir("Dir::State::lists") + "partial/";
- DestFile += URItoFileName(URI) + string(".IndexDiff");
-
- if(Debug)
- std::clog << "QueueDiffIndex: " << Desc.URI << std::endl;
-
- QueueURI(Desc);
-}
-
-// AcqIndex::Custom600Headers - Insert custom request headers /*{{{*/
-// ---------------------------------------------------------------------
-/* The only header we use is the last-modified header. */
-string pkgAcqIndexDiffs::Custom600Headers()
-{
- if(DestFile.rfind(".IndexDiff") == string::npos)
- return string("");
-
- string Final = _config->FindDir("Dir::State::lists");
- Final += URItoFileName(RealURI) + string(".IndexDiff");
-
- if(Debug)
- std::clog << "Custom600Header-IMS: " << Final << std::endl;
-
- struct stat Buf;
- if (stat(Final.c_str(),&Buf) != 0)
- return "\nIndex-File: true";
-
- return "\nIndex-File: true\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
-}
-
-void pkgAcqIndexDiffs::Failed(string Message,pkgAcquire::MethodConfig *Cnf)
-{
- if(Debug)
- std::clog << "Failed(): " << Desc.URI << std::endl
- << "Falling back to big package file" << std::endl;
- new pkgAcqIndex(Owner, RealURI, Desc.Description,Desc.ShortDesc,
- ExpectedMD5);
- Finish();
-}
-
-
-// helper that cleans the item out of the fetcher queue
-void pkgAcqIndexDiffs::Finish(bool allDone)
-{
- // we restore the original name, this is required, otherwise
- // the file will be cleaned
- if(allDone) {
- // this is for the "real" finish
- DestFile = _config->FindDir("Dir::State::lists");
- DestFile += URItoFileName(RealURI);
- Complete = true;
- Dequeue();
- if(Debug)
- std::clog << "\n\nallDone: " << DestFile << "\n" << std::endl;
- return;
-
- }
-
- if(Debug)
- std::clog << "Finishing: " << Desc.URI << std::endl;
- Complete = false;
- Status = StatDone;
- Dequeue();
- return;
-}
-
-
-// this needs to be rewriten to not depend on the external ed
-bool pkgAcqIndexDiffs::ApplyDiff(string PatchFile)
-{
- char *error;
- int res=0;
-
- string FinalFile = _config->FindDir("Dir::State::lists");
- FinalFile += URItoFileName(RealURI);
-
- int Process = ExecFork();
- if (Process == 0)
- {
- chdir(_config->FindDir("Dir::State::lists").c_str());
- // for some reason "red" fails with the pdiffs from p.d.o/~aba ?!?
- string cmd = "(zcat " + PatchFile + "; echo \"wq\" ) | /bin/ed " + FinalFile + " >/dev/null 2>/dev/null";
- if(Debug)
- std::clog << "Runing: " << cmd << std::endl;
- res = system(cmd.c_str());
- _exit(WEXITSTATUS(res));
- }
- if(!ExecWait(Process, error, true)) {
- //_error->Error("Patch failed: %s ", error);
- return false;
- }
-
- return true;
-}
-
-bool pkgAcqIndexDiffs::QueueNextDiff()
-{
- // calc sha1 of the just patched file
- string FinalFile = _config->FindDir("Dir::State::lists");
- FinalFile += URItoFileName(RealURI);
-
- FileFd fd(FinalFile, FileFd::ReadOnly);
- SHA1Summation SHA1;
- SHA1.AddFD(fd.Fd(), fd.Size());
- string local_sha1 = string(SHA1.Result());
-
- // see if we have a patch for it, the patch list must be ordered
- for(vector<DiffInfo>::iterator I=available_patches.begin();
- I != available_patches.end(); I++) {
- // if the patch does not fit, it's not interessting
- if((*I).sha1 != local_sha1)
- available_patches.erase(I);
- }
-
- // error checking and falling back if no patch was found
- if(available_patches.size() == 0) {
- Failed("", NULL);
- return false;
- }
-
- // queue the right diff
- Desc.URI = string(RealURI) + string(".diff/") + available_patches[0].file + string(".gz");
- Desc.Description = available_patches[0].file + string(".pdiff");
-
- DestFile = _config->FindDir("Dir::State::lists") + "partial/";
- DestFile += URItoFileName(RealURI + string(".diff/") + available_patches[0].file);
-
- if(Debug)
- std::clog << "pkgAcqIndexDiffs::QueueNextDiff(): " << Desc.URI << std::endl;
-
- QueueURI(Desc);
-
- return true;
-}
-
-bool pkgAcqIndexDiffs::ParseIndexDiff(string IndexDiffFile)
-{
- if(Debug)
- std::clog << "pkgAcqIndexDiffs::ParseIndexDiff() " << IndexDiffFile
- << std::endl;
-
- FileFd Fd(IndexDiffFile,FileFd::ReadOnly);
- pkgTagFile TF(&Fd);
- if (_error->PendingError() == true)
- return false;
- pkgTagSection Tags;
- if(TF.Step(Tags) == true)
- {
- string local_sha1;
- string tmp = Tags.FindS("SHA1-Current");
- std::stringstream ss(tmp);
- ss >> ServerSha1;
-
- FileFd fd(CurrentPackagesFile, FileFd::ReadOnly);
- SHA1Summation SHA1;
- SHA1.AddFD(fd.Fd(), fd.Size());
- local_sha1 = string(SHA1.Result());
-
- if(local_sha1 == ServerSha1) {
- if(Debug)
- std::clog << "Package file is up-to-date" << std::endl;
- Finish(true);
- return true;
- }
- if(Debug)
- std::clog << "SHA1-Current: " << ServerSha1 << std::endl;
-
- // check the historie and see what patches we need
- string history = Tags.FindS("SHA1-History");
- std::stringstream hist(history);
- DiffInfo d;
- string size;
- bool found = false;
- while(hist >> d.sha1 >> size >> d.file) {
- d.size = atoi(size.c_str());
- if(d.sha1 == local_sha1)
- found=true;
- if(found) {
- if(Debug)
- std::clog << "Need to get diff: " << d.file << std::endl;
- available_patches.push_back(d);
- }
- }
- // no information how to get the patches, bail out
- if(!found) {
- if(Debug)
- std::clog << "Can't find a patch in the index file" << std::endl;
- // Failed will queue a big package file
- Failed("", NULL);
- } else {
- // queue the diffs
- new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,
- ExpectedMD5, available_patches);
- Finish();
- return true;
- }
- }
-
- return false;
-}
-
-
-void pkgAcqIndexDiffs::Done(string Message,unsigned long Size,string Md5Hash,
- pkgAcquire::MethodConfig *Cnf)
-{
- if(Debug)
- std::clog << "pkgAcqIndexDiffs::Done(): " << Desc.URI << std::endl;
-
- Item::Done(Message,Size,Md5Hash,Cnf);
-
- int len = Desc.URI.size();
- // sucess in downloading the index
- if(Desc.URI.substr(len-strlen("Index"),len-1) == "Index") {
-
- // rename
- string FinalFile = _config->FindDir("Dir::State::lists");
- FinalFile += URItoFileName(RealURI) + string(".IndexDiff");
- if(Debug)
- std::clog << "Renaming: " << DestFile << " -> " << FinalFile
- << std::endl;
- Rename(DestFile,FinalFile);
- chmod(FinalFile.c_str(),0644);
- DestFile = FinalFile;
-
- if(!ParseIndexDiff(DestFile))
- return Failed("", NULL);
- else
- return Finish();
- }
-
- // sucess in downloading a diff
- if(Desc.URI.find(".diff") != string::npos) {
- ApplyDiff(DestFile);
- available_patches.erase(available_patches.begin());
-
- if(available_patches.size() > 0) {
- new pkgAcqIndexDiffs(Owner, RealURI, Description, Desc.ShortDesc,
- ExpectedMD5, available_patches);
- } else {
- Finish(true);
- return;
- }
- }
-
- Finish();
-}
-
-
projects / apt.git / blobdiff