X-Git-Url: http://git.hcoop.net/ntk/apt.git/blobdiff_plain/92173b19af439ac49d842902a3a57105d396d7d8..73c2c61beb6b2fb4a7685f04d2b0e17d5a934504:/methods/gzip.cc diff --git a/methods/gzip.cc b/methods/gzip.cc dissimilarity index 83% index 15bff4d8..b9808b30 100644 --- a/methods/gzip.cc +++ b/methods/gzip.cc @@ -1,179 +1,114 @@ -// -*- mode: cpp; mode: fold -*- -// Description /*{{{*/ -// $Id: gzip.cc,v 1.1 1998/10/25 07:07:30 jgg Exp $ -/* ###################################################################### - - GZip method - Take a file URI in and decompress it into the target - file. - - ##################################################################### */ - /*}}}*/ -// Include Files /*{{{*/ -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include - /*}}}*/ - -// Fail - Generate a failure message /*{{{*/ -// --------------------------------------------------------------------- -/* */ -void Fail(string URI) -{ - string Err = "Undetermined Error"; - if (_error->empty() == false) - _error->PopMessage(Err); - - printf("400 URI Failure\n" - "URI: %s\n" - "Message: %s\n\n",URI.c_str(),Err.c_str()); - _error->Discard(); -} - /*}}}*/ - -int main() -{ - setlinebuf(stdout); - SetNonBlock(STDIN_FILENO,true); - - printf("100 Capabilities\n" - "Version: 1.0\n" - "Pipeline: true\n" - "Send-Config: true\n\n"); - - vector Messages; - while (1) - { - if (WaitFd(STDIN_FILENO) == false || - ReadMessages(STDIN_FILENO,Messages) == false) - return 0; - - while (Messages.empty() == false) - { - string Message = Messages.front(); - Messages.erase(Messages.begin()); - - // Fetch the message number - char *End; - int Number = strtol(Message.c_str(),&End,10); - if (End == Message.c_str()) - { - cerr << "Malformed message!" << endl; - return 100; - } - - // 601 configuration message - if (Number == 601) - { - pkgInjectConfiguration(Message,*_config); - continue; - } - - // 600 URI Fetch message - if (Number != 600) - continue; - - // Grab the URI bit - string URI = LookupTag(Message,"URI"); - string Target = LookupTag(Message,"Filename"); - - // Grab the filename - string::size_type Pos = URI.find(':'); - if (Pos == string::npos) - { - _error->Error("Invalid message"); - Fail(URI); - continue; - } - string File = string(URI,Pos+1); - - // Start the reply message - string Result = "201 URI Done"; - Result += "\nURI: " + URI; - Result += "\nFileName: " + Target; - - // See if the file exists - FileFd From(File,FileFd::ReadOnly); - FileFd To(Target,FileFd::WriteEmpty); - To.EraseOnFailure(); - if (_error->PendingError() == true) - { - Fail(URI); - continue; - } - - // Fork gzip - int Process = fork(); - if (Process < 0) - { - _error->Errno("fork","Couldn't fork gzip"); - Fail(URI); - continue; - } - - // The child - if (Process == 0) - { - dup2(From.Fd(),STDIN_FILENO); - dup2(To.Fd(),STDOUT_FILENO); - - const char *Args[3]; - Args[0] = _config->FindFile("Dir::bin::gzip","gzip").c_str(); - Args[1] = "-d"; - Args[2] = 0; - execvp(Args[0],(char **)Args); - } - From.Close(); - To.Close(); - - // Wait for gzip to finish - int Status; - if (waitpid(Process,&Status,0) != Process) - { - _error->Errno("wait","Waiting for gzip failed"); - Fail(URI); - continue; - } - - if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0) - { - _error->Error("gzip failed, perhaps the disk is full or the directory permissions are wrong."); - Fail(URI); - continue; - } - - // Transfer the modification times - struct stat Buf; - if (stat(File.c_str(),&Buf) != 0) - { - _error->Errno("stat","Failed to stat"); - Fail(URI); - continue; - } - struct utimbuf TimeBuf; - TimeBuf.actime = Buf.st_atime; - TimeBuf.modtime = Buf.st_mtime; - if (utime(Target.c_str(),&TimeBuf) != 0) - { - _error->Errno("utime","Failed to set modification time"); - Fail(URI); - continue; - } - - // Send the message - Result += "\n\n"; - if (write(STDOUT_FILENO,Result.begin(),Result.length()) != - (signed)Result.length()) - return 100; - } - } - - return 0; -} +// -*- mode: cpp; mode: fold -*- +// Description /*{{{*/ +// $Id: gzip.cc,v 1.7 1999/01/27 02:48:53 jgg Exp $ +/* ###################################################################### + + GZip method - Take a file URI in and decompress it into the target + file. + + ##################################################################### */ + /*}}}*/ +// Include Files /*{{{*/ +#include +#include +#include +#include + +#include +#include +#include +#include +#include + /*}}}*/ + +class GzipMethod : public pkgAcqMethod +{ + virtual bool Fetch(FetchItem *Itm); + + public: + + GzipMethod() : pkgAcqMethod("1.0",SingleInstance | SendConfig) {}; +}; + +// GzipMethod::Fetch - Decompress the passed URI /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool GzipMethod::Fetch(FetchItem *Itm) +{ + URI Get = Itm->Uri; + + FetchResult Res; + Res.Filename = Itm->DestFile; + URIStart(Res); + + // Open the source and destintation files + FileFd From(Get.Path,FileFd::ReadOnly); + FileFd To(Itm->DestFile,FileFd::WriteEmpty); + To.EraseOnFailure(); + if (_error->PendingError() == true) + return false; + + // Fork gzip + int Process = fork(); + if (Process < 0) + return _error->Errno("fork","Couldn't fork gzip"); + + // The child + if (Process == 0) + { + dup2(From.Fd(),STDIN_FILENO); + dup2(To.Fd(),STDOUT_FILENO); + From.Close(); + To.Close(); + SetCloseExec(STDIN_FILENO,false); + SetCloseExec(STDOUT_FILENO,false); + + const char *Args[3]; + Args[0] = _config->Find("Dir::bin::gzip","gzip").c_str(); + Args[1] = "-d"; + Args[2] = 0; + execvp(Args[0],(char **)Args); + exit(100); + } + From.Close(); + + // Wait for gzip to finish + int Status; + if (waitpid(Process,&Status,0) != Process) + { + To.OpFail(); + return _error->Errno("wait","Waiting for gzip failed"); + } + + if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0) + { + To.OpFail(); + return _error->Error("gzip failed, perhaps the disk is full or the directory permissions are wrong."); + } + + To.Close(); + + // Transfer the modification times + struct stat Buf; + if (stat(Get.Path.c_str(),&Buf) != 0) + return _error->Errno("stat","Failed to stat"); + + struct utimbuf TimeBuf; + TimeBuf.actime = Buf.st_atime; + TimeBuf.modtime = Buf.st_mtime; + if (utime(Itm->DestFile.c_str(),&TimeBuf) != 0) + return _error->Errno("utime","Failed to set modification time"); + + // Return a Done response + Res.LastModified = Buf.st_mtime; + URIDone(Res); + + return true; +} + /*}}}*/ + +int main() +{ + GzipMethod Mth; + return Mth.Run(); +}