// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: file.cc,v 1.3 1998/10/23 00:50:02 jgg Exp $
+// $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 relevent
+ 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 <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/hashes.h>
#include <apt-pkg/fileutl.h>
-#include <strutl.h>
+#include <apt-pkg/strutl.h>
+#include "aptmethod.h"
+#include <string>
#include <sys/stat.h>
-#include <unistd.h>
-#include <stdio.h>
+
+#include <apti18n.h>
/*}}}*/
-// Fail - Generate a failure message /*{{{*/
+class FileMethod : public aptMethod
+{
+ virtual bool Fetch(FetchItem *Itm) APT_OVERRIDE;
+
+ public:
+ FileMethod() : aptMethod("file", "1.0", SingleInstance | SendConfig | LocalOnly) {};
+};
+
+// FileMethod::Fetch - Fetch a file /*{{{*/
// ---------------------------------------------------------------------
/* */
-void Fail(string URI)
+bool FileMethod::Fetch(FetchItem *Itm)
{
- printf("400 URI Failure\n"
- "URI: %s\n"
- "Message: File does not exist\n\n",URI.c_str());
-}
- /*}}}*/
+ 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 //"));
-int main()
-{
- setlinebuf(stdout);
- SetNonBlock(STDIN_FILENO,true);
-
- printf("100 Capabilities\n"
- "Version: 1.0\n"
- "Pipeline: true\n\n");
-
- vector<string> Messages;
- while (1)
+ struct stat Buf;
+ // deal with destination files which might linger around
+ if (lstat(Itm->DestFile.c_str(), &Buf) == 0)
{
- if (WaitFd(STDIN_FILENO) == false ||
- ReadMessages(STDIN_FILENO,Messages) == false)
- return 0;
-
- while (Messages.empty() == false)
+ if ((Buf.st_mode & S_IFREG) != 0)
{
- 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;
- }
-
- // We only understand 600 URI Fetch messages
- if (Number != 600)
- continue;
-
- // Grab the URI bit
- string URI = LookupTag(Message,"URI");
-
- // Grab the filename
- string::size_type Pos = URI.find(':');
- if (Pos == string::npos)
+ if (Itm->LastModified == Buf.st_mtime && Itm->LastModified != 0)
{
- Fail(URI);
- continue;
- }
- string File = string(URI,Pos+1);
-
- // Grab the modification time
- time_t LastMod;
- string LTime = LookupTag(Message,"Last-Modified");
- if (LTime.empty() == false && StrToTime(LTime,LastMod) == false)
- LTime = string();
-
- // Start the reply message
- string Result = "201 URI Done";
- Result += "\nURI: " + URI;
-
- // See if the file exists
- struct stat Buf;
- bool Ok = false;
- if (stat(File.c_str(),&Buf) == 0)
- {
- char S[300];
- sprintf(S,"\nSize: %ld",Buf.st_size);
-
- Result += "\nFilename: " + File;
- Result += S;
- Result += "\nLast-Modified: " + TimeRFC1123(Buf.st_mtime);
- if (LTime.empty() == false && LastMod == Buf.st_mtime)
- Result += "\nIMS-Hit: true";
-
- Ok = true;
- }
-
- // See if we can compute a file without a .gz exentsion
- Pos = File.rfind(".gz");
- if (Pos + 3 == File.length())
- {
- File = string(File,0,Pos);
- if (stat(File.c_str(),&Buf) == 0)
+ HashStringList const hsl = Itm->ExpectedHashes;
+ if (Itm->ExpectedHashes.VerifyFile(File))
{
- char S[300];
- sprintf(S,"\nAlt-Size: %ld",Buf.st_size);
-
- Result += "\nAlt-Filename: " + File;
- Result += S;
- Result += "\nAlt-Last-Modified: " + TimeRFC1123(Buf.st_mtime);
- if (LTime.empty() == false && LastMod == Buf.st_mtime)
- Result += "\nAlt-IMS-Hit: true";
-
- Ok = true;
+ Res.Filename = Itm->DestFile;
+ Res.IMSHit = true;
}
}
-
- // Did we find something?
- if (Ok == false)
+ }
+ }
+ 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)
{
- Fail(URI);
- continue;
+ 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;
}
- Result += "\n\n";
-
- // Send the message
- if (write(STDOUT_FILENO,Result.begin(),Result.length()) !=
- (signed)Result.length())
- return 100;
- }
+ // no break here as we could have situations similar to '.gz' vs '.tar.gz' here
+ }
}
-
- return 0;
+
+ 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();
}
projects / apt.git / blobdiff