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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:00:48 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:00:48 +0000 |
commit | 851b6a097165af4d51c0db01b5e05256e5006896 (patch) | |
tree | 5f7c388ec894a7806c49a99f3bdb605d0b299a7c /methods/store.cc | |
parent | Initial commit. (diff) | |
download | apt-851b6a097165af4d51c0db01b5e05256e5006896.tar.xz apt-851b6a097165af4d51c0db01b5e05256e5006896.zip |
Adding upstream version 2.6.1.upstream/2.6.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | methods/store.cc | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/methods/store.cc b/methods/store.cc new file mode 100644 index 0000000..8ffc7b9 --- /dev/null +++ b/methods/store.cc @@ -0,0 +1,147 @@ +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +/* ###################################################################### + + Store method - Takes a file URI and stores its content (for which it will + calculate the hashes) in the given destination. The input file will be + extracted based on its file extension (or with the given compressor if + called with one of the compatible symlinks) and potentially recompressed + based on the file extension of the destination filename. + + ##################################################################### */ + /*}}}*/ +// Include Files /*{{{*/ +#include <config.h> + +#include "aptmethod.h" +#include <apt-pkg/aptconfiguration.h> +#include <apt-pkg/configuration.h> +#include <apt-pkg/error.h> +#include <apt-pkg/fileutl.h> +#include <apt-pkg/hashes.h> +#include <apt-pkg/strutl.h> + +#include <string> +#include <vector> +#include <string.h> +#include <sys/stat.h> +#include <sys/time.h> + +#include <apti18n.h> + /*}}}*/ + +class StoreMethod : public aptMethod +{ + virtual bool Fetch(FetchItem *Itm) APT_OVERRIDE; + + public: + + explicit StoreMethod(std::string &&pProg) : aptMethod(std::move(pProg),"1.2",SingleInstance | SendConfig | SendURIEncoded) + { + SeccompFlags = aptMethod::BASE; + if (Binary != "store") + methodNames.insert(methodNames.begin(), "store"); + } +}; + +static bool OpenFileWithCompressorByName(FileFd &fileFd, std::string const &Filename, unsigned int const Mode, std::string const &Name) +{ + if (Name == "store") + return fileFd.Open(Filename, Mode, FileFd::Extension); + + std::vector<APT::Configuration::Compressor> const compressors = APT::Configuration::getCompressors(); + std::vector<APT::Configuration::Compressor>::const_iterator compressor = compressors.begin(); + for (; compressor != compressors.end(); ++compressor) + if (compressor->Name == Name) + break; + if (compressor == compressors.end()) + return _error->Error("Extraction of file %s requires unknown compressor %s", Filename.c_str(), Name.c_str()); + return fileFd.Open(Filename, Mode, *compressor); +} + + + /*}}}*/ +bool StoreMethod::Fetch(FetchItem *Itm) /*{{{*/ +{ + URI Get(Itm->Uri); + std::string Path = DecodeSendURI(Get.Host + Get.Path); // To account for relative paths + + FetchResult Res; + Res.Filename = Itm->DestFile; + URIStart(Res); + + // Open the source and destination files + FileFd From; + if (_config->FindB("Method::Compress", false) == false) + { + if (OpenFileWithCompressorByName(From, Path, FileFd::ReadOnly, Binary) == false) + return false; + if(From.IsCompressed() && From.FileSize() == 0) + return _error->Error(_("Empty files can't be valid archives")); + } + else + From.Open(Path, FileFd::ReadOnly, FileFd::Extension); + if (From.IsOpen() == false || From.Failed() == true) + return false; + + FileFd To; + if (Itm->DestFile != "/dev/null" && Itm->DestFile != Path) + { + if (_config->FindB("Method::Compress", false) == false) + To.Open(Itm->DestFile, FileFd::WriteOnly | FileFd::Create | FileFd::Atomic, FileFd::Extension); + else if (OpenFileWithCompressorByName(To, Itm->DestFile, FileFd::WriteOnly | FileFd::Create | FileFd::Empty, Binary) == false) + return false; + + if (To.IsOpen() == false || To.Failed() == true) + return false; + To.EraseOnFailure(); + } + + // Read data from source, generate checksums and write + Hashes Hash(Itm->ExpectedHashes); + bool Failed = false; + Res.Size = 0; + while (1) + { + unsigned char Buffer[4*1024]; + unsigned long long Count = 0; + + if (!From.Read(Buffer,sizeof(Buffer),&Count)) + { + if (To.IsOpen()) + To.OpFail(); + return false; + } + if (Count == 0) + break; + Res.Size += Count; + + Hash.Add(Buffer,Count); + if (To.IsOpen() && To.Write(Buffer,Count) == false) + { + Failed = true; + break; + } + } + + From.Close(); + To.Close(); + + if (Failed == true) + return false; + + if (TransferModificationTimes(Path.c_str(), Itm->DestFile.c_str(), Res.LastModified) == false) + return false; + + // Return a Done response + Res.TakeHashes(Hash); + + URIDone(Res); + return true; +} + /*}}}*/ + +int main(int, char *argv[]) +{ + return StoreMethod(flNotDir(argv[0])).Run(); +} |