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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: file.cc,v 1.3 1998/10/23 00:50:02 jgg Exp $
/* ######################################################################
File URI method for APT
This simply checks that the file specified exists, if so the relevent
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 <apt-pkg/fileutl.h>
#include <strutl.h>
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
/*}}}*/
// Fail - Generate a failure message /*{{{*/
// ---------------------------------------------------------------------
/* */
void Fail(string URI)
{
printf("400 URI Failure\n"
"URI: %s\n"
"Message: File does not exist\n\n",URI.c_str());
}
/*}}}*/
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)
{
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;
}
// 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)
{
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)
{
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;
}
}
// Did we find something?
if (Ok == false)
{
Fail(URI);
continue;
}
Result += "\n\n";
// Send the message
if (write(STDOUT_FILENO,Result.begin(),Result.length()) !=
(signed)Result.length())
return 100;
}
}
return 0;
}
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