diff options
Diffstat (limited to 'methods/gzip.cc')
| -rw-r--r-- | methods/gzip.cc | 235 |
1 files changed, 79 insertions, 156 deletions
diff --git a/methods/gzip.cc b/methods/gzip.cc index 84ad472e9..acba7fc52 100644 --- a/methods/gzip.cc +++ b/methods/gzip.cc @@ -1,6 +1,6 @@ // -*- mode: cpp; mode: fold -*- // Description /*{{{*/ -// $Id: gzip.cc,v 1.2 1998/10/26 07:11:53 jgg Exp $ +// $Id: gzip.cc,v 1.3 1998/10/30 07:53:53 jgg Exp $ /* ###################################################################### GZip method - Take a file URI in and decompress it into the target @@ -11,8 +11,7 @@ // Include Files /*{{{*/ #include <apt-pkg/fileutl.h> #include <apt-pkg/error.h> -#include <apt-pkg/configuration.h> -#include <apt-pkg/acquire-worker.h> +#include <apt-pkg/acquire-method.h> #include <strutl.h> #include <sys/stat.h> @@ -22,166 +21,90 @@ #include <stdio.h> /*}}}*/ -// Fail - Generate a failure message /*{{{*/ -// --------------------------------------------------------------------- -/* */ -void Fail(string URI) +class GzipMethod : public pkgAcqMethod { - string Err = "Undetermined Error"; - if (_error->empty() == false) - _error->PopMessage(Err); + virtual bool Fetch(string Message,URI Get); - printf("400 URI Failure\n" - "URI: %s\n" - "Message: %s\n\n",URI.c_str(),Err.c_str()); - _error->Discard(); -} - /*}}}*/ + public: + + GzipMethod() : pkgAcqMethod("1.0",SingleInstance | SendConfig) {}; +}; -int main() +// GzipMethod::Fetch - Decompress the passed URI /*{{{*/ +// --------------------------------------------------------------------- +/* */ +bool GzipMethod::Fetch(string Message,URI Get) { - setlinebuf(stdout); - SetNonBlock(STDIN_FILENO,true); + // Open the source and destintation files + FileFd From(Get.Path,FileFd::ReadOnly); + FileFd To(DestFile,FileFd::WriteEmpty); + To.EraseOnFailure(); + if (_error->PendingError() == true) + return false; - printf("100 Capabilities\n" - "Version: 1.0\n" - "Pipeline: true\n" - "Send-Config: true\n\n"); - - vector<string> Messages; - while (1) + // Fork gzip + int Process = fork(); + if (Process < 0) + return _error->Errno("fork","Couldn't fork gzip"); + + // The child + if (Process == 0) { - 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; - } + 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"); - // 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); - 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(); - _error->Errno("wait","Waiting for gzip failed"); - Fail(URI); - continue; - } + struct utimbuf TimeBuf; + TimeBuf.actime = Buf.st_atime; + TimeBuf.modtime = Buf.st_mtime; + if (utime(DestFile.c_str(),&TimeBuf) != 0) + return _error->Errno("utime","Failed to set modification time"); - if (WIFEXITED(Status) == 0 || WEXITSTATUS(Status) != 0) - { - To.OpFail(); - _error->Error("gzip failed, perhaps the disk is full or the directory permissions are wrong."); - Fail(URI); - continue; - } - - To.Close(); - - // 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 a Done response + FetchResult Res; + Res.LastModified = Buf.st_mtime; + Res.Filename = DestFile; + URIDone(Res); - return 0; + return true; +} + /*}}}*/ + +int main() +{ + GzipMethod Mth; + return Mth.Run(); } |