// -*- mode: cpp; mode: fold -*- // Description /*{{{*/ // $Id: file.cc,v 1.9.2.1 2004/01/16 18:58:50 mdz Exp $ /* ###################################################################### File URI method for APT This simply checks that the file specified exists, if so the relevant information is returned. If a .gz filename is specified then the file name with .gz removed will also be checked and information about it will be returned in Alt-* ##################################################################### */ /*}}}*/ // Include Files /*{{{*/ #include <config.h> #include "aptmethod.h" #include <apt-pkg/aptconfiguration.h> #include <apt-pkg/error.h> #include <apt-pkg/fileutl.h> #include <apt-pkg/hashes.h> #include <apt-pkg/strutl.h> #include <string> #include <sys/stat.h> #include <apti18n.h> /*}}}*/ class FileMethod : public aptMethod { virtual bool Fetch(FetchItem *Itm) APT_OVERRIDE; public: FileMethod() : aptMethod("file", "1.0", SingleInstance | SendConfig | LocalOnly) { SeccompFlags = aptMethod::BASE; } }; // FileMethod::Fetch - Fetch a file /*{{{*/ // --------------------------------------------------------------------- /* */ bool FileMethod::Fetch(FetchItem *Itm) { URI Get = Itm->Uri; std::string File = Get.Path; FetchResult Res; if (Get.Host.empty() == false) return _error->Error(_("Invalid URI, local URIS must not start with //")); struct stat Buf; // deal with destination files which might linger around if (lstat(Itm->DestFile.c_str(), &Buf) == 0) { if ((Buf.st_mode & S_IFREG) != 0) { if (Itm->LastModified == Buf.st_mtime && Itm->LastModified != 0) { HashStringList const hsl = Itm->ExpectedHashes; if (Itm->ExpectedHashes.VerifyFile(File)) { Res.Filename = Itm->DestFile; Res.IMSHit = true; } } } } if (Res.IMSHit != true) RemoveFile("file", Itm->DestFile); int olderrno = 0; // See if the file exists if (stat(File.c_str(),&Buf) == 0) { Res.Size = Buf.st_size; Res.Filename = File; Res.LastModified = Buf.st_mtime; Res.IMSHit = false; if (Itm->LastModified == Buf.st_mtime && Itm->LastModified != 0) { unsigned long long const filesize = Itm->ExpectedHashes.FileSize(); if (filesize != 0 && filesize == Res.Size) Res.IMSHit = true; } CalculateHashes(Itm, Res); } else olderrno = errno; if (Res.IMSHit == false) URIStart(Res); // See if the uncompressed file exists and reuse it FetchResult AltRes; AltRes.Filename.clear(); std::vector<std::string> extensions = APT::Configuration::getCompressorExtensions(); for (std::vector<std::string>::const_iterator ext = extensions.begin(); ext != extensions.end(); ++ext) { if (APT::String::Endswith(File, *ext) == true) { std::string const unfile = File.substr(0, File.length() - ext->length()); if (stat(unfile.c_str(),&Buf) == 0) { AltRes.Size = Buf.st_size; AltRes.Filename = unfile; AltRes.LastModified = Buf.st_mtime; AltRes.IMSHit = false; if (Itm->LastModified == Buf.st_mtime && Itm->LastModified != 0) AltRes.IMSHit = true; break; } // no break here as we could have situations similar to '.gz' vs '.tar.gz' here } } if (AltRes.Filename.empty() == false) URIDone(Res,&AltRes); else if (Res.Filename.empty() == false) URIDone(Res); else { errno = olderrno; return _error->Errno(File.c_str(), _("File not found")); } return true; } /*}}}*/ int main() { return FileMethod().Run(); }