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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
// $Id: acquire-method.cc,v 1.10 1998/12/03 07:29:16 jgg Exp $
/* ######################################################################
Acquire Method
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#ifdef __GNUG__
#pragma implementation "apt-pkg/acquire-method.h"
#endif
#include <apt-pkg/acquire-method.h>
#include <apt-pkg/error.h>
#include <apt-pkg/configuration.h>
#include <strutl.h>
#include <apt-pkg/fileutl.h>
#include <stdio.h>
/*}}}*/
// AcqMethod::pkgAcqMethod - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* This constructs the initialization text */
pkgAcqMethod::pkgAcqMethod(const char *Ver,unsigned long Flags)
{
char S[300] = "";
char *End = S;
strcat(End,"100 Capabilities\n");
sprintf(End+strlen(End),"Version: %s\n",Ver);
if ((Flags & SingleInstance) == SingleInstance)
strcat(End,"Single-Instance: true\n");
if ((Flags & Pipeline) == Pipeline)
strcat(End,"Pipeline: true\n");
if ((Flags & SendConfig) == SendConfig)
strcat(End,"Send-Config: true\n");
if ((Flags & LocalOnly) == LocalOnly)
strcat(End,"Local-Only: true\n");
strcat(End,"\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
SetNonBlock(STDIN_FILENO,true);
Queue = 0;
}
/*}}}*/
// AcqMethod::Fail - A fetch has failed /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMethod::Fail(bool Transient)
{
string Err = "Undetermined Error";
if (_error->empty() == false)
_error->PopMessage(Err);
_error->Discard();
Fail(Err,Transient);
}
/*}}}*/
// AcqMethod::Fail - A fetch has failed /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMethod::Fail(string Err,bool Transient)
{
char S[1024];
if (Queue != 0)
{
snprintf(S,sizeof(S),"400 URI Failure\nURI: %s\n"
"Message: %s\n",Queue->Uri.c_str(),Err.c_str());
// Dequeue
FetchItem *Tmp = Queue;
Queue = Queue->Next;
delete Tmp;
}
else
snprintf(S,sizeof(S),"400 URI Failure\nURI: <UNKNOWN>\n"
"Message: %s\n",Err.c_str());
// Set the transient flag
if (Transient == true)
strcat(S,"Transient-Failure: true\n\n");
else
strcat(S,"\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
}
/*}}}*/
// AcqMethod::URIStart - Indicate a download is starting /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMethod::URIStart(FetchResult &Res)
{
if (Queue == 0)
abort();
char S[1024] = "";
char *End = S;
End += snprintf(S,sizeof(S),"200 URI Start\nURI: %s\n",Queue->Uri.c_str());
if (Res.Size != 0)
End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
if (Res.LastModified != 0)
End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
TimeRFC1123(Res.LastModified).c_str());
if (Res.ResumePoint != 0)
End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
Res.ResumePoint);
strcat(End,"\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
}
/*}}}*/
// AcqMethod::URIDone - A URI is finished /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMethod::URIDone(FetchResult &Res, FetchResult *Alt)
{
if (Queue == 0)
abort();
char S[1024] = "";
char *End = S;
End += snprintf(S,sizeof(S),"201 URI Done\nURI: %s\n",Queue->Uri.c_str());
if (Res.Filename.empty() == false)
End += snprintf(End,sizeof(S) - (End - S),"Filename: %s\n",Res.Filename.c_str());
if (Res.Size != 0)
End += snprintf(End,sizeof(S) - (End - S),"Size: %u\n",Res.Size);
if (Res.LastModified != 0)
End += snprintf(End,sizeof(S) - (End - S),"Last-Modified: %s\n",
TimeRFC1123(Res.LastModified).c_str());
if (Res.MD5Sum.empty() == false)
End += snprintf(End,sizeof(S) - (End - S),"MD5Sum: %s\n",Res.MD5Sum.c_str());
if (Res.ResumePoint != 0)
End += snprintf(End,sizeof(S) - (End - S),"Resume-Point: %u\n",
Res.ResumePoint);
if (Res.IMSHit == true)
strcat(End,"IMS-Hit: true\n");
End = S + strlen(S);
if (Alt != 0)
{
if (Alt->Filename.empty() == false)
End += snprintf(End,sizeof(S) - (End - S),"Alt-Filename: %s\n",Alt->Filename.c_str());
if (Alt->Size != 0)
End += snprintf(End,sizeof(S) - (End - S),"Alt-Size: %u\n",Alt->Size);
if (Alt->LastModified != 0)
End += snprintf(End,sizeof(S) - (End - S),"Alt-Last-Modified: %s\n",
TimeRFC1123(Alt->LastModified).c_str());
if (Alt->MD5Sum.empty() == false)
End += snprintf(End,sizeof(S) - (End - S),"Alt-MD5Sum: %s\n",
Alt->MD5Sum.c_str());
if (Alt->IMSHit == true)
strcat(End,"Alt-IMS-Hit: true\n");
}
strcat(End,"\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
// Dequeue
FetchItem *Tmp = Queue;
Queue = Queue->Next;
delete Tmp;
}
/*}}}*/
// AcqMethod::MediaFail - Syncronous request for new media /*{{{*/
// ---------------------------------------------------------------------
/* This sends a 403 Media Failure message to the APT and waits for it
to be ackd */
void pkgAcqMethod::MediaFail(string Required,string Drive)
{
char S[1024];
snprintf(S,sizeof(S),"403 Media Failure\nMedia: %s\nDrive: %s\n\n",
Required.c_str(),Drive.c_str());
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
vector<string> MyMessages;
/* Here we read messages until we find a 603, each non 603 message is
appended to the main message list for later processing */
while (1)
{
if (WaitFd(STDIN_FILENO) == false)
exit(0);
if (ReadMessages(STDIN_FILENO,MyMessages) == false)
exit(0);
string Message = MyMessages.front();
MyMessages.erase(MyMessages.begin());
// Fetch the message number
char *End;
int Number = strtol(Message.c_str(),&End,10);
if (End == Message.c_str())
{
cerr << "Malformed message!" << endl;
exit(100);
}
// Change ack
if (Number == 603)
{
while (Message.empty() == false)
{
Messages.push_back(MyMessages.front());
MyMessages.erase(MyMessages.begin());
}
return;
}
Messages.push_back(Message);
}
}
/*}}}*/
// AcqMethod::Configuration - Handle the configuration message /*{{{*/
// ---------------------------------------------------------------------
/* This parses each configuration entry and puts it into the _config
Configuration class. */
bool pkgAcqMethod::Configuration(string Message)
{
::Configuration &Cnf = *_config;
const char *I = Message.begin();
unsigned int Length = strlen("Config-Item");
for (; I + Length < Message.end(); I++)
{
// Not a config item
if (I[Length] != ':' || stringcasecmp(I,I+Length,"Config-Item") != 0)
continue;
I += Length + 1;
for (; I < Message.end() && *I == ' '; I++);
const char *Equals = I;
for (; Equals < Message.end() && *Equals != '='; Equals++);
const char *End = Equals;
for (; End < Message.end() && *End != '\n'; End++);
if (End == Equals)
return false;
Cnf.Set(string(I,Equals-I),string(Equals+1,End-Equals-1));
I = End;
}
return true;
}
/*}}}*/
// AcqMethod::Run - Run the message engine /*{{{*/
// ---------------------------------------------------------------------
/* */
int pkgAcqMethod::Run(bool Single)
{
while (1)
{
// Block if the message queue is empty
if (Messages.empty() == true)
{
if (Single == false)
if (WaitFd(STDIN_FILENO) == false)
return 0;
if (ReadMessages(STDIN_FILENO,Messages) == false)
return 0;
}
// Single mode exits if the message queue is empty
if (Single == true && Messages.empty() == true)
return 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;
}
switch (Number)
{
case 601:
if (Configuration(Message) == false)
return 100;
break;
case 600:
{
FetchItem *Tmp = new FetchItem;
Tmp->Uri = LookupTag(Message,"URI");
Tmp->DestFile = LookupTag(Message,"FileName");
if (StrToTime(LookupTag(Message,"Last-Modified"),Tmp->LastModified) == false)
Tmp->LastModified = 0;
Tmp->IndexFile = StringToBool(LookupTag(Message,"Index-File"),false);
Tmp->Next = 0;
// Append it to the list
FetchItem **I = &Queue;
for (; *I != 0; I = &(*I)->Next);
*I = Tmp;
// Notify that this item is to be fetched.
if (Fetch(Tmp) == false)
Fail();
break;
}
}
}
return 0;
}
/*}}}*/
// AcqMethod::Log - Send a log message /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMethod::Log(const char *Format,...)
{
string CurrentURI = "<UNKNOWN>";
if (Queue != 0)
CurrentURI = Queue->Uri;
va_list args;
va_start(args,Format);
// sprintf the description
char S[1024];
unsigned int Len = snprintf(S,sizeof(S),"101 Log\nURI: %s\n"
"Message: ",CurrentURI.c_str());
vsnprintf(S+Len,sizeof(S)-Len,Format,args);
strcat(S,"\n\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
}
/*}}}*/
// AcqMethod::Status - Send a status message /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcqMethod::Status(const char *Format,...)
{
string CurrentURI = "<UNKNOWN>";
if (Queue != 0)
CurrentURI = Queue->Uri;
va_list args;
va_start(args,Format);
// sprintf the description
char S[1024];
unsigned int Len = snprintf(S,sizeof(S),"102 Status\nURI: %s\n"
"Message: ",CurrentURI.c_str());
vsnprintf(S+Len,sizeof(S)-Len,Format,args);
strcat(S,"\n\n");
if (write(STDOUT_FILENO,S,strlen(S)) != (signed)strlen(S))
exit(100);
}
/*}}}*/
// AcqMethod::FetchResult::FetchResult - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcqMethod::FetchResult::FetchResult() : LastModified(0),
IMSHit(false), Size(0), ResumePoint(0)
{
}
/*}}}*/