[apt.git] / apt-pkg / acquire-worker.cc

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: acquire-worker.cc,v 1.15 1998/12/05 01:45:20 jgg Exp $
/* ######################################################################

   Acquire Worker 

   The worker process can startup either as a Configuration prober
   or as a queue runner. As a configuration prober it only reads the
   configuration message and 
   
   ##################################################################### */
									/*}}}*/
// Include Files							/*{{{*/
#ifdef __GNUG__
#pragma implementation "apt-pkg/acquire-worker.h"
#endif
#include <apt-pkg/acquire-worker.h>
#include <apt-pkg/acquire-item.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <strutl.h>

#include <sys/stat.h>
#include <unistd.h>
#include <signal.h>
#include <wait.h>
#include <stdio.h>
									/*}}}*/

// Worker::Worker - Constructor for Queue startup			/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Worker::Worker(Queue *Q,MethodConfig *Cnf,
			   pkgAcquireStatus *Log) : Log(Log)
{
   OwnerQ = Q;
   Config = Cnf;
   Access = Cnf->Access;
   CurrentItem = 0;

   Construct();   
}
									/*}}}*/
// Worker::Worker - Constructor for method config startup		/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Worker::Worker(MethodConfig *Cnf)
{
   OwnerQ = 0;
   Config = Cnf;
   Access = Cnf->Access;
   CurrentItem = 0;
   
   Construct();   
}
									/*}}}*/
// Worker::Construct - Constructor helper				/*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcquire::Worker::Construct()
{
   NextQueue = 0;
   NextAcquire = 0;
   Process = -1;
   InFd = -1;
   OutFd = -1;
   OutReady = false;
   InReady = false;
   Debug = _config->FindB("Debug::pkgAcquire::Worker",false);
}
									/*}}}*/
// Worker::~Worker - Destructor						/*{{{*/
// ---------------------------------------------------------------------
/* */
pkgAcquire::Worker::~Worker()
{
   close(InFd);
   close(OutFd);
   
   if (Process > 0)
   {
      kill(Process,SIGINT);
      if (waitpid(Process,0,0) != Process)
	 _error->Warning("I waited but nothing was there!");
   }   
}
									/*}}}*/
// Worker::Start - Start the worker process				/*{{{*/
// ---------------------------------------------------------------------
/* This forks the method and inits the communication channel */
bool pkgAcquire::Worker::Start()
{
   // Get the method path
   string Method = _config->FindDir("Dir::Bin::Methods") + Access;
   if (FileExists(Method) == false)
      return _error->Error("The method driver %s could not be found.",Method.c_str());

   if (Debug == true)
      clog << "Starting method '" << Method << '\'' << endl;

   // Create the pipes
   int Pipes[4] = {-1,-1,-1,-1};
   if (pipe(Pipes) != 0 || pipe(Pipes+2) != 0)
   {
      _error->Errno("pipe","Failed to create IPC pipe to subprocess");
      for (int I = 0; I != 4; I++)
	 close(Pipes[I]);
      return false;
   }
   for (int I = 0; I != 4; I++)
      SetCloseExec(Pipes[0],true);
   
   // Fork off the process
   Process = fork();
   if (Process < 0)
   {
      cerr << "FATAL -> Failed to fork." << endl;
      exit(100);
   }

   // Spawn the subprocess
   if (Process == 0)
   {
      // Setup the FDs
      dup2(Pipes[1],STDOUT_FILENO);
      dup2(Pipes[2],STDIN_FILENO);
      dup2(((filebuf *)clog.rdbuf())->fd(),STDERR_FILENO);
      SetCloseExec(STDOUT_FILENO,false);
      SetCloseExec(STDIN_FILENO,false);      
      SetCloseExec(STDERR_FILENO,false);
      
      const char *Args[2];
      Args[0] = Method.c_str();
      Args[1] = 0;
      execv(Args[0],(char **)Args);
      cerr << "Failed to exec method " << Args[0] << endl;
      exit(100);
   }

   // Fix up our FDs
   InFd = Pipes[0];
   OutFd = Pipes[3];
   SetNonBlock(Pipes[0],true);
   SetNonBlock(Pipes[3],true);
   close(Pipes[1]);
   close(Pipes[2]);
   OutReady = false;
   InReady = true;
   
   // Read the configuration data
   if (WaitFd(InFd) == false ||
       ReadMessages() == false)
      return _error->Error("Method %s did not start correctly",Method.c_str());

   RunMessages();
   if (OwnerQ != 0)
      SendConfiguration();
   
   return true;
}
									/*}}}*/
// Worker::ReadMessages - Read all pending messages into the list	/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::ReadMessages()
{
   if (::ReadMessages(InFd,MessageQueue) == false)
      return MethodFailure();
   return true;
}
									/*}}}*/
// Worker::RunMessage - Empty the message queue				/*{{{*/
// ---------------------------------------------------------------------
/* This takes the messages from the message queue and runs them through
   the parsers in order. */
bool pkgAcquire::Worker::RunMessages()
{
   while (MessageQueue.empty() == false)
   {
      string Message = MessageQueue.front();
      MessageQueue.erase(MessageQueue.begin());

      if (Debug == true)
	 clog << " <- " << Access << ':' << QuoteString(Message,"\n") << endl;
      
      // Fetch the message number
      char *End;
      int Number = strtol(Message.c_str(),&End,10);
      if (End == Message.c_str())
	 return _error->Error("Invalid message from method %s: %s",Access.c_str(),Message.c_str());

      string URI = LookupTag(Message,"URI");
      pkgAcquire::Queue::QItem *Itm = 0;
      if (URI.empty() == false)
	 Itm = OwnerQ->FindItem(URI,this);
      
      // Determine the message number and dispatch
      switch (Number)
      {
	 // 100 Capabilities
	 case 100:
	 if (Capabilities(Message) == false)
	    return _error->Error("Unable to process Capabilities message from %s",Access.c_str());
	 break;
	 
	 // 101 Log
	 case 101:
	 if (Debug == true)
	    clog << " <- (log) " << LookupTag(Message,"Message") << endl;
	 break;
	 
	 // 102 Status
	 case 102:
	 Status = LookupTag(Message,"Message");
	 break;
	    
	 // 200 URI Start
	 case 200:
	 {
	    if (Itm == 0)
	    {
	       _error->Error("Method gave invalid 200 URI Start message");
	       break;
	    }
	    
	    CurrentItem = Itm;
	    CurrentSize = 0;
	    TotalSize = atoi(LookupTag(Message,"Size","0").c_str());
	    Itm->Owner->Start(Message,atoi(LookupTag(Message,"Size","0").c_str()));
	    
	    if (Log != 0)
	       Log->Fetch(*Itm);

	    break;
	 }
	 
	 // 201 URI Done
	 case 201:
	 {
	    if (Itm == 0)
	    {
	       _error->Error("Method gave invalid 201 URI Done message");
	       break;
	    }

	    pkgAcquire::Item *Owner = Itm->Owner;
	    pkgAcquire::ItemDesc Desc = *Itm;
	    OwnerQ->ItemDone(Itm);
	    Owner->Done(Message,atoi(LookupTag(Message,"Size","0").c_str()),
					  LookupTag(Message,"MD5-Hash"));
	    ItemDone();
	    
	    // Log that we are done
	    if (Log != 0)
	    {
	       if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true ||
		   StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
		  Log->IMSHit(Desc);
	       else
		  Log->Done(Desc);
	    }	    
	    break;
	 }	 
	 
	 // 400 URI Failure
	 case 400:
	 {
	    if (Itm == 0)
	    {
	       _error->Error("Method gave invalid 400 URI Failure message");
	       break;
	    }

	    pkgAcquire::Item *Owner = Itm->Owner;
	    pkgAcquire::ItemDesc Desc = *Itm;
	    OwnerQ->ItemDone(Itm);
	    Owner->Failed(Message);
	    ItemDone();
	    
	    if (Log != 0)
	       Log->Fail(Desc);
	    
	    break;
	 }	 
	 
	 // 401 General Failure
	 case 401:
	 _error->Error("Method %s General failure: %s",LookupTag(Message,"Message").c_str());
	 break;
	 
	 // 403 Media Change
	 case 403:
	 MediaChange(Message); 
	 break;
      }      
   }
   return true;
}
									/*}}}*/
// Worker::Capabilities - 100 Capabilities handler			/*{{{*/
// ---------------------------------------------------------------------
/* This parses the capabilities message and dumps it into the configuration
   structure. */
bool pkgAcquire::Worker::Capabilities(string Message)
{
   if (Config == 0)
      return true;
   
   Config->Version = LookupTag(Message,"Version");
   Config->SingleInstance = StringToBool(LookupTag(Message,"Single-Instance"),false);
   Config->Pipeline = StringToBool(LookupTag(Message,"Pipeline"),false);
   Config->SendConfig = StringToBool(LookupTag(Message,"Send-Config"),false);
   Config->LocalOnly = StringToBool(LookupTag(Message,"Local-Only"),false);

   // Some debug text
   if (Debug == true)
   {
      clog << "Configured access method " << Config->Access << endl;
      clog << "Version:" << Config->Version << " SingleInstance:" <<
	 Config->SingleInstance << 
	 " Pipeline:" << Config->Pipeline << " SendConfig:" << 
	 Config->SendConfig << endl;
   }
   
   return true;
}
									/*}}}*/
// Worker::MediaChange - Request a media change				/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::MediaChange(string Message)
{
   if (Log == 0 || Log->MediaChange(LookupTag(Message,"Media"),
				    LookupTag(Message,"Drive")) == false)
   {
      char S[300];
      sprintf(S,"603 Media Changed\nFailed: true\n\n");
      if (Debug == true)
	 clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
      OutQueue += S;
      OutReady = true;
      return true;
   }

   char S[300];
   sprintf(S,"603 Media Changed\n\n");
   if (Debug == true)
      clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
   OutQueue += S;
   OutReady = true;
   return true;
}
									/*}}}*/
// Worker::SendConfiguration - Send the config to the method		/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::SendConfiguration()
{
   if (Config->SendConfig == false)
      return true;

   if (OutFd == -1)
      return false;
   
   string Message = "601 Configuration\n";
   Message.reserve(2000);

   /* Write out all of the configuration directives by walking the 
      configuration tree */
   const Configuration::Item *Top = _config->Tree(0);
   for (; Top != 0;)
   {
      if (Top->Value.empty() == false)
      {
	 string Line = "Config-Item: " + Top->FullTag() + "=";
	 Line += QuoteString(Top->Value,"\n") + '\n';
	 Message += Line;
      }
      
      if (Top->Child != 0)
      {
	 Top = Top->Child;
	 continue;
      }
      
      while (Top != 0 && Top->Next == 0)
	 Top = Top->Parent;
      if (Top != 0)
	 Top = Top->Next;
   }   
   Message += '\n';

   if (Debug == true)
      clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
   OutQueue += Message;
   OutReady = true; 
   
   return true;
}
									/*}}}*/
// Worker::QueueItem - Add an item to the outbound queue		/*{{{*/
// ---------------------------------------------------------------------
/* Send a URI Acquire message to the method */
bool pkgAcquire::Worker::QueueItem(pkgAcquire::Queue::QItem *Item)
{
   if (OutFd == -1)
      return false;
   
   string Message = "600 URI Acquire\n";
   Message.reserve(300);
   Message += "URI: " + Item->URI;
   Message += "\nFilename: " + Item->Owner->DestFile;
   Message += Item->Owner->Custom600Headers();
   Message += "\n\n";
   
   if (Debug == true)
      clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
   OutQueue += Message;
   OutReady = true;
   
   return true;
}
									/*}}}*/
// Worker::OutFdRead - Out bound FD is ready				/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::OutFdReady()
{
   int Res = write(OutFd,OutQueue.begin(),OutQueue.length());
   if (Res <= 0)
      return MethodFailure();

   // Hmm.. this should never happen.
   if (Res < 0)
      return true;
   
   OutQueue.erase(0,Res);
   if (OutQueue.empty() == true)
      OutReady = false;
   
   return true;
}
									/*}}}*/
// Worker::InFdRead - In bound FD is ready				/*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgAcquire::Worker::InFdReady()
{
   if (ReadMessages() == false)
      return false;
   RunMessages();
   return true;
}
									/*}}}*/
// Worker::MethodFailure - Called when the method fails			/*{{{*/
// ---------------------------------------------------------------------
/* This is called when the method is belived to have failed, probably because
   read returned -1. */
bool pkgAcquire::Worker::MethodFailure()
{
   _error->Error("Method %s has died unexpectedly!",Access.c_str());
   
   if (waitpid(Process,0,0) != Process)
      _error->Warning("I waited but nothing was there!");
   Process = -1;
   close(InFd);
   close(OutFd);
   InFd = -1;
   OutFd = -1;
   OutReady = false;
   InReady = false;
   OutQueue = string();
   MessageQueue.erase(MessageQueue.begin(),MessageQueue.end());
   
   return false;
}
									/*}}}*/
// Worker::Pulse - Called periodically 					/*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcquire::Worker::Pulse()
{
   if (CurrentItem == 0)
      return;
 
   struct stat Buf;
   if (stat(CurrentItem->Owner->DestFile.c_str(),&Buf) != 0)
      return;
   CurrentSize = Buf.st_size;
}
									/*}}}*/
// Worker::ItemDone - Called when the current item is finished		/*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgAcquire::Worker::ItemDone()
{
   CurrentItem = 0;
   CurrentSize = 0;
   TotalSize = 0;
   Status = string();
}
									/*}}}*/
Commit	Line	Data
0118833a AL	1	// -- mode: cpp; mode: fold --
0118833a AL	2	// Description /{{{/
76d97c26	3	// $Id: acquire-worker.cc,v 1.15 1998/12/05 01:45:20 jgg Exp $
0118833a AL	4	/* ######################################################################
	5
	6	Acquire Worker
	7
3b5421b4 AL	8	The worker process can startup either as a Configuration prober
	9	or as a queue runner. As a configuration prober it only reads the
	10	configuration message and
	11
0118833a AL	12	##################################################################### */
	13	/}}}/
	14	// Include Files /{{{/
	15	#ifdef __GNUG__
	16	#pragma implementation "apt-pkg/acquire-worker.h"
3b5421b4	17	#endif
0118833a	18	#include <apt-pkg/acquire-worker.h>
0a8a80e5	19	#include <apt-pkg/acquire-item.h>
3b5421b4 AL	20	#include <apt-pkg/configuration.h>
	21	#include <apt-pkg/error.h>
	22	#include <apt-pkg/fileutl.h>
	23	#include <strutl.h>
	24
8267fe24	25	#include <sys/stat.h>
3b5421b4 AL	26	#include <unistd.h>
3b5421b4 AL	27	#include <signal.h>
93641593	28	#include <wait.h>
542ec555	29	#include <stdio.h>
3b5421b4 AL	30	/}}}/
	31
	32	// Worker::Worker - Constructor for Queue startup /{{{/
	33	// ---------------------------------------------------------------------
	34	/* */
8267fe24 AL	35	pkgAcquire::Worker::Worker(Queue Q,MethodConfig Cnf,
8267fe24 AL	36	pkgAcquireStatus *Log) : Log(Log)
3b5421b4 AL	37	{
3b5421b4 AL	38	OwnerQ = Q;
0a8a80e5 AL	39	Config = Cnf;
	40	Access = Cnf->Access;
	41	CurrentItem = 0;
3b5421b4 AL	42
	43	Construct();
	44	}
	45	/}}}/
	46	// Worker::Worker - Constructor for method config startup /{{{/
	47	// ---------------------------------------------------------------------
	48	/* */
	49	pkgAcquire::Worker::Worker(MethodConfig *Cnf)
	50	{
	51	OwnerQ = 0;
	52	Config = Cnf;
	53	Access = Cnf->Access;
0a8a80e5 AL	54	CurrentItem = 0;
0a8a80e5 AL	55
3b5421b4 AL	56	Construct();
	57	}
	58	/}}}/
	59	// Worker::Construct - Constructor helper /{{{/
	60	// ---------------------------------------------------------------------
	61	/* */
	62	void pkgAcquire::Worker::Construct()
	63	{
0a8a80e5 AL	64	NextQueue = 0;
0a8a80e5 AL	65	NextAcquire = 0;
3b5421b4 AL	66	Process = -1;
	67	InFd = -1;
	68	OutFd = -1;
0a8a80e5 AL	69	OutReady = false;
0a8a80e5 AL	70	InReady = false;
3b5421b4 AL	71	Debug = _config->FindB("Debug::pkgAcquire::Worker",false);
	72	}
	73	/}}}/
	74	// Worker::~Worker - Destructor /{{{/
	75	// ---------------------------------------------------------------------
	76	/* */
	77	pkgAcquire::Worker::~Worker()
	78	{
	79	close(InFd);
	80	close(OutFd);
	81
	82	if (Process > 0)
0a8a80e5	83	{
3b5421b4	84	kill(Process,SIGINT);
0a8a80e5 AL	85	if (waitpid(Process,0,0) != Process)
	86	_error->Warning("I waited but nothing was there!");
	87	}
3b5421b4 AL	88	}
	89	/}}}/
	90	// Worker::Start - Start the worker process /{{{/
	91	// ---------------------------------------------------------------------
	92	/* This forks the method and inits the communication channel */
	93	bool pkgAcquire::Worker::Start()
	94	{
	95	// Get the method path
	96	string Method = _config->FindDir("Dir::Bin::Methods") + Access;
	97	if (FileExists(Method) == false)
	98	return _error->Error("The method driver %s could not be found.",Method.c_str());
	99
	100	if (Debug == true)
	101	clog << "Starting method '" << Method << '\'' << endl;
	102
	103	// Create the pipes
	104	int Pipes[4] = {-1,-1,-1,-1};
	105	if (pipe(Pipes) != 0 \|\| pipe(Pipes+2) != 0)
	106	{
	107	_error->Errno("pipe","Failed to create IPC pipe to subprocess");
	108	for (int I = 0; I != 4; I++)
	109	close(Pipes[I]);
	110	return false;
	111	}
8b89e57f AL	112	for (int I = 0; I != 4; I++)
	113	SetCloseExec(Pipes[0],true);
	114
3b5421b4 AL	115	// Fork off the process
	116	Process = fork();
	117	if (Process < 0)
	118	{
	119	cerr << "FATAL -> Failed to fork." << endl;
	120	exit(100);
	121	}
	122
	123	// Spawn the subprocess
	124	if (Process == 0)
	125	{
	126	// Setup the FDs
	127	dup2(Pipes[1],STDOUT_FILENO);
	128	dup2(Pipes[2],STDIN_FILENO);
	129	dup2(((filebuf *)clog.rdbuf())->fd(),STDERR_FILENO);
3b5421b4 AL	130	SetCloseExec(STDOUT_FILENO,false);
	131	SetCloseExec(STDIN_FILENO,false);
	132	SetCloseExec(STDERR_FILENO,false);
	133
	134	const char *Args[2];
	135	Args[0] = Method.c_str();
	136	Args[1] = 0;
	137	execv(Args[0],(char **)Args);
	138	cerr << "Failed to exec method " << Args[0] << endl;
	139	exit(100);
	140	}
	141
	142	// Fix up our FDs
	143	InFd = Pipes[0];
	144	OutFd = Pipes[3];
	145	SetNonBlock(Pipes[0],true);
	146	SetNonBlock(Pipes[3],true);
	147	close(Pipes[1]);
	148	close(Pipes[2]);
0a8a80e5 AL	149	OutReady = false;
0a8a80e5 AL	150	InReady = true;
3b5421b4 AL	151
	152	// Read the configuration data
	153	if (WaitFd(InFd) == false \|\|
	154	ReadMessages() == false)
	155	return _error->Error("Method %s did not start correctly",Method.c_str());
	156
	157	RunMessages();
8b89e57f AL	158	if (OwnerQ != 0)
8b89e57f AL	159	SendConfiguration();
3b5421b4 AL	160
	161	return true;
	162	}
	163	/}}}/
	164	// Worker::ReadMessages - Read all pending messages into the list /{{{/
	165	// ---------------------------------------------------------------------
0a8a80e5	166	/* */
3b5421b4 AL	167	bool pkgAcquire::Worker::ReadMessages()
3b5421b4 AL	168	{
0a8a80e5 AL	169	if (::ReadMessages(InFd,MessageQueue) == false)
0a8a80e5 AL	170	return MethodFailure();
3b5421b4 AL	171	return true;
	172	}
	173	/}}}/
3b5421b4 AL	174	// Worker::RunMessage - Empty the message queue /{{{/
	175	// ---------------------------------------------------------------------
	176	/* This takes the messages from the message queue and runs them through
	177	the parsers in order. */
	178	bool pkgAcquire::Worker::RunMessages()
	179	{
	180	while (MessageQueue.empty() == false)
	181	{
	182	string Message = MessageQueue.front();
	183	MessageQueue.erase(MessageQueue.begin());
0a8a80e5 AL	184
	185	if (Debug == true)
	186	clog << " <- " << Access << ':' << QuoteString(Message,"\n") << endl;
3b5421b4 AL	187
	188	// Fetch the message number
	189	char *End;
	190	int Number = strtol(Message.c_str(),&End,10);
	191	if (End == Message.c_str())
	192	return _error->Error("Invalid message from method %s: %s",Access.c_str(),Message.c_str());
	193
c88edf1d AL	194	string URI = LookupTag(Message,"URI");
	195	pkgAcquire::Queue::QItem *Itm = 0;
	196	if (URI.empty() == false)
	197	Itm = OwnerQ->FindItem(URI,this);
bfd22fc0	198
3b5421b4 AL	199	// Determine the message number and dispatch
	200	switch (Number)
	201	{
0a8a80e5	202	// 100 Capabilities
3b5421b4 AL	203	case 100:
	204	if (Capabilities(Message) == false)
	205	return _error->Error("Unable to process Capabilities message from %s",Access.c_str());
	206	break;
0a8a80e5 AL	207
	208	// 101 Log
	209	case 101:
	210	if (Debug == true)
	211	clog << " <- (log) " << LookupTag(Message,"Message") << endl;
	212	break;
	213
	214	// 102 Status
	215	case 102:
	216	Status = LookupTag(Message,"Message");
	217	break;
	218
	219	// 200 URI Start
	220	case 200:
c88edf1d AL	221	{
	222	if (Itm == 0)
	223	{
93bf083d	224	_error->Error("Method gave invalid 200 URI Start message");
c88edf1d AL	225	break;
c88edf1d AL	226	}
8267fe24	227
c88edf1d AL	228	CurrentItem = Itm;
	229	CurrentSize = 0;
	230	TotalSize = atoi(LookupTag(Message,"Size","0").c_str());
8267fe24	231	Itm->Owner->Start(Message,atoi(LookupTag(Message,"Size","0").c_str()));
c88edf1d	232
8267fe24 AL	233	if (Log != 0)
	234	Log->Fetch(*Itm);
	235
c88edf1d AL	236	break;
c88edf1d AL	237	}
0a8a80e5 AL	238
	239	// 201 URI Done
	240	case 201:
c88edf1d AL	241	{
	242	if (Itm == 0)
	243	{
93bf083d	244	_error->Error("Method gave invalid 201 URI Done message");
c88edf1d AL	245	break;
	246	}
	247
bfd22fc0	248	pkgAcquire::Item *Owner = Itm->Owner;
8267fe24	249	pkgAcquire::ItemDesc Desc = *Itm;
be4401bf	250	OwnerQ->ItemDone(Itm);
bfd22fc0	251	Owner->Done(Message,atoi(LookupTag(Message,"Size","0").c_str()),
c88edf1d	252	LookupTag(Message,"MD5-Hash"));
8267fe24 AL	253	ItemDone();
	254
	255	// Log that we are done
	256	if (Log != 0)
	257	{
	258	if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true \|\|
	259	StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
	260	Log->IMSHit(Desc);
	261	else
	262	Log->Done(Desc);
	263	}
c88edf1d AL	264	break;
c88edf1d AL	265	}
0a8a80e5 AL	266
	267	// 400 URI Failure
	268	case 400:
c88edf1d AL	269	{
	270	if (Itm == 0)
	271	{
93bf083d	272	_error->Error("Method gave invalid 400 URI Failure message");
c88edf1d AL	273	break;
	274	}
	275
bfd22fc0	276	pkgAcquire::Item *Owner = Itm->Owner;
8267fe24	277	pkgAcquire::ItemDesc Desc = *Itm;
c88edf1d	278	OwnerQ->ItemDone(Itm);
bfd22fc0	279	Owner->Failed(Message);
8267fe24 AL	280	ItemDone();
	281
	282	if (Log != 0)
	283	Log->Fail(Desc);
	284
c88edf1d AL	285	break;
c88edf1d AL	286	}
0a8a80e5 AL	287
	288	// 401 General Failure
	289	case 401:
	290	_error->Error("Method %s General failure: %s",LookupTag(Message,"Message").c_str());
	291	break;
542ec555 AL	292
	293	// 403 Media Change
	294	case 403:
	295	MediaChange(Message);
	296	break;
3b5421b4 AL	297	}
	298	}
	299	return true;
	300	}
	301	/}}}/
	302	// Worker::Capabilities - 100 Capabilities handler /{{{/
	303	// ---------------------------------------------------------------------
	304	/* This parses the capabilities message and dumps it into the configuration
	305	structure. */
	306	bool pkgAcquire::Worker::Capabilities(string Message)
	307	{
	308	if (Config == 0)
	309	return true;
	310
	311	Config->Version = LookupTag(Message,"Version");
	312	Config->SingleInstance = StringToBool(LookupTag(Message,"Single-Instance"),false);
0a8a80e5 AL	313	Config->Pipeline = StringToBool(LookupTag(Message,"Pipeline"),false);
0a8a80e5 AL	314	Config->SendConfig = StringToBool(LookupTag(Message,"Send-Config"),false);
e331f6ed	315	Config->LocalOnly = StringToBool(LookupTag(Message,"Local-Only"),false);
3b5421b4 AL	316
	317	// Some debug text
	318	if (Debug == true)
	319	{
	320	clog << "Configured access method " << Config->Access << endl;
0a8a80e5	321	clog << "Version:" << Config->Version << " SingleInstance:" <<
a72ace20	322	Config->SingleInstance <<
0a8a80e5 AL	323	" Pipeline:" << Config->Pipeline << " SendConfig:" <<
0a8a80e5 AL	324	Config->SendConfig << endl;
3b5421b4 AL	325	}
3b5421b4 AL	326
542ec555 AL	327	return true;
	328	}
	329	/}}}/
	330	// Worker::MediaChange - Request a media change /{{{/
	331	// ---------------------------------------------------------------------
	332	/* */
	333	bool pkgAcquire::Worker::MediaChange(string Message)
	334	{
	335	if (Log == 0 \|\| Log->MediaChange(LookupTag(Message,"Media"),
	336	LookupTag(Message,"Drive")) == false)
	337	{
	338	char S[300];
	339	sprintf(S,"603 Media Changed\nFailed: true\n\n");
	340	if (Debug == true)
	341	clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
	342	OutQueue += S;
	343	OutReady = true;
	344	return true;
	345	}
	346
	347	char S[300];
	348	sprintf(S,"603 Media Changed\n\n");
	349	if (Debug == true)
	350	clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
	351	OutQueue += S;
	352	OutReady = true;
3b5421b4 AL	353	return true;
3b5421b4 AL	354	}
0118833a	355	/}}}/
0a8a80e5 AL	356	// Worker::SendConfiguration - Send the config to the method /{{{/
	357	// ---------------------------------------------------------------------
	358	/* */
	359	bool pkgAcquire::Worker::SendConfiguration()
	360	{
	361	if (Config->SendConfig == false)
	362	return true;
	363
	364	if (OutFd == -1)
	365	return false;
	366
	367	string Message = "601 Configuration\n";
	368	Message.reserve(2000);
	369
	370	/* Write out all of the configuration directives by walking the
	371	configuration tree */
	372	const Configuration::Item *Top = _config->Tree(0);
	373	for (; Top != 0;)
	374	{
	375	if (Top->Value.empty() == false)
	376	{
	377	string Line = "Config-Item: " + Top->FullTag() + "=";
	378	Line += QuoteString(Top->Value,"\n") + '\n';
	379	Message += Line;
	380	}
	381
	382	if (Top->Child != 0)
	383	{
	384	Top = Top->Child;
	385	continue;
	386	}
	387
	388	while (Top != 0 && Top->Next == 0)
	389	Top = Top->Parent;
	390	if (Top != 0)
	391	Top = Top->Next;
	392	}
	393	Message += '\n';
	394
	395	if (Debug == true)
	396	clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
	397	OutQueue += Message;
	398	OutReady = true;
	399
	400	return true;
	401	}
	402	/}}}/
	403	// Worker::QueueItem - Add an item to the outbound queue /{{{/
	404	// ---------------------------------------------------------------------
	405	/* Send a URI Acquire message to the method */
	406	bool pkgAcquire::Worker::QueueItem(pkgAcquire::Queue::QItem *Item)
	407	{
	408	if (OutFd == -1)
	409	return false;
	410
	411	string Message = "600 URI Acquire\n";
	412	Message.reserve(300);
	413	Message += "URI: " + Item->URI;
	414	Message += "\nFilename: " + Item->Owner->DestFile;
	415	Message += Item->Owner->Custom600Headers();
	416	Message += "\n\n";
	417
	418	if (Debug == true)
	419	clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
420	OutQueue += Message;
421	OutReady = true;
422
423	return true;
424	}
425	/}}}/
426	// Worker::OutFdRead - Out bound FD is ready /{{{/
427	// ---------------------------------------------------------------------
428	/* */
429	bool pkgAcquire::Worker::OutFdReady()
430	{
431	int Res = write(OutFd,OutQueue.begin(),OutQueue.length());
432	if (Res <= 0)
433	return MethodFailure();
434
435	// Hmm.. this should never happen.
436	if (Res < 0)
437	return true;
438
439	OutQueue.erase(0,Res);
440	if (OutQueue.empty() == true)
441	OutReady = false;
442
443	return true;
444	}
445	/}}}/
446	// Worker::InFdRead - In bound FD is ready /{{{/
447	// ---------------------------------------------------------------------
448	/* */
449	bool pkgAcquire::Worker::InFdReady()
450	{
451	if (ReadMessages() == false)
452	return false;
453	RunMessages();
454	return true;
455	}
456	/}}}/
457	// Worker::MethodFailure - Called when the method fails /{{{/
458	// ---------------------------------------------------------------------
459	/* This is called when the method is belived to have failed, probably because
460	read returned -1. */
461	bool pkgAcquire::Worker::MethodFailure()
462	{
76d97c26 AL	463	_error->Error("Method %s has died unexpectedly!",Access.c_str());
76d97c26 AL	464
0a8a80e5 AL	465	if (waitpid(Process,0,0) != Process)
	466	_error->Warning("I waited but nothing was there!");
	467	Process = -1;
	468	close(InFd);
	469	close(OutFd);
	470	InFd = -1;
	471	OutFd = -1;
	472	OutReady = false;
	473	InReady = false;
	474	OutQueue = string();
	475	MessageQueue.erase(MessageQueue.begin(),MessageQueue.end());
	476
	477	return false;
	478	}
	479	/}}}/
8267fe24 AL	480	// Worker::Pulse - Called periodically /{{{/
	481	// ---------------------------------------------------------------------
	482	/* */
	483	void pkgAcquire::Worker::Pulse()
	484	{
	485	if (CurrentItem == 0)
	486	return;
542ec555	487
8267fe24 AL	488	struct stat Buf;
	489	if (stat(CurrentItem->Owner->DestFile.c_str(),&Buf) != 0)
	490	return;
	491	CurrentSize = Buf.st_size;
	492	}
	493	/}}}/
	494	// Worker::ItemDone - Called when the current item is finished /{{{/
	495	// ---------------------------------------------------------------------
	496	/* */
	497	void pkgAcquire::Worker::ItemDone()
	498	{
	499	CurrentItem = 0;
	500	CurrentSize = 0;
	501	TotalSize = 0;
	502	Status = string();
	503	}
	504	/}}}/