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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:07:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 18:07:13 +0000 |
commit | 636c7dc17286d93d788c741d15fd756aeda066d5 (patch) | |
tree | e7ae158cc54f591041a061b9865bcae51854f15c /methods/file.cc | |
parent | Initial commit. (diff) | |
download | apt-636c7dc17286d93d788c741d15fd756aeda066d5.tar.xz apt-636c7dc17286d93d788c741d15fd756aeda066d5.zip |
Adding upstream version 1.8.2.3.upstream/1.8.2.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'methods/file.cc')
-rw-r--r-- | methods/file.cc | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/methods/file.cc b/methods/file.cc new file mode 100644 index 0000000..ff43015 --- /dev/null +++ b/methods/file.cc @@ -0,0 +1,134 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/* ###################################################################### + + 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(); +} |