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

// -*- mode: cpp; mode: fold -*-
// Description								/*{{{*/
// $Id: acquire-worker.cc,v 1.22 1999/05/23 06:47:43 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 <apt-pkg/strutl.h>

#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <signal.h>
#include <wait.h>
#include <stdio.h>
#include <errno.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 = ExecFork();

   // 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());
	    ResumePoint = atoi(LookupTag(Message,"Resume-Point","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)
	       {
		  /* Hide 'hits' for local only sources - we also manage to
		     hide gets */
		  if (Config->LocalOnly == false)
		     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,Config);
	    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;
   do
   {
      Res = write(OutFd,OutQueue.begin(),OutQueue.length());
   }
   while (Res < 0 && errno == EINTR);
   
   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 /{{{/
8b75eb1c	3	// $Id: acquire-worker.cc,v 1.22 1999/05/23 06:47:43 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>
cdcc6d34	23	#include <apt-pkg/strutl.h>
3b5421b4	24
8267fe24	25	#include <sys/stat.h>
3b5421b4	26	#include <unistd.h>
b0db36b1	27	#include <fcntl.h>
3b5421b4	28	#include <signal.h>
93641593	29	#include <wait.h>
542ec555	30	#include <stdio.h>
b0db36b1	31	#include <errno.h>
3b5421b4 AL	32	/}}}/
	33
	34	// Worker::Worker - Constructor for Queue startup /{{{/
	35	// ---------------------------------------------------------------------
	36	/* */
8267fe24 AL	37	pkgAcquire::Worker::Worker(Queue Q,MethodConfig Cnf,
8267fe24 AL	38	pkgAcquireStatus *Log) : Log(Log)
3b5421b4 AL	39	{
3b5421b4 AL	40	OwnerQ = Q;
0a8a80e5 AL	41	Config = Cnf;
	42	Access = Cnf->Access;
	43	CurrentItem = 0;
3b5421b4 AL	44
	45	Construct();
	46	}
	47	/}}}/
	48	// Worker::Worker - Constructor for method config startup /{{{/
	49	// ---------------------------------------------------------------------
	50	/* */
	51	pkgAcquire::Worker::Worker(MethodConfig *Cnf)
	52	{
	53	OwnerQ = 0;
	54	Config = Cnf;
	55	Access = Cnf->Access;
0a8a80e5 AL	56	CurrentItem = 0;
0a8a80e5 AL	57
3b5421b4 AL	58	Construct();
	59	}
	60	/}}}/
	61	// Worker::Construct - Constructor helper /{{{/
	62	// ---------------------------------------------------------------------
	63	/* */
	64	void pkgAcquire::Worker::Construct()
	65	{
0a8a80e5 AL	66	NextQueue = 0;
0a8a80e5 AL	67	NextAcquire = 0;
3b5421b4 AL	68	Process = -1;
	69	InFd = -1;
	70	OutFd = -1;
0a8a80e5 AL	71	OutReady = false;
0a8a80e5 AL	72	InReady = false;
3b5421b4 AL	73	Debug = _config->FindB("Debug::pkgAcquire::Worker",false);
	74	}
	75	/}}}/
	76	// Worker::~Worker - Destructor /{{{/
	77	// ---------------------------------------------------------------------
	78	/* */
	79	pkgAcquire::Worker::~Worker()
	80	{
	81	close(InFd);
	82	close(OutFd);
	83
	84	if (Process > 0)
0a8a80e5	85	{
3b5421b4	86	kill(Process,SIGINT);
0a8a80e5 AL	87	if (waitpid(Process,0,0) != Process)
	88	_error->Warning("I waited but nothing was there!");
	89	}
3b5421b4 AL	90	}
	91	/}}}/
	92	// Worker::Start - Start the worker process /{{{/
	93	// ---------------------------------------------------------------------
	94	/* This forks the method and inits the communication channel */
	95	bool pkgAcquire::Worker::Start()
	96	{
	97	// Get the method path
	98	string Method = _config->FindDir("Dir::Bin::Methods") + Access;
	99	if (FileExists(Method) == false)
	100	return _error->Error("The method driver %s could not be found.",Method.c_str());
	101
	102	if (Debug == true)
	103	clog << "Starting method '" << Method << '\'' << endl;
	104
	105	// Create the pipes
	106	int Pipes[4] = {-1,-1,-1,-1};
	107	if (pipe(Pipes) != 0 \|\| pipe(Pipes+2) != 0)
	108	{
	109	_error->Errno("pipe","Failed to create IPC pipe to subprocess");
	110	for (int I = 0; I != 4; I++)
	111	close(Pipes[I]);
	112	return false;
	113	}
8b89e57f AL	114	for (int I = 0; I != 4; I++)
	115	SetCloseExec(Pipes[0],true);
	116
3b5421b4	117	// Fork off the process
54676e1a	118	Process = ExecFork();
3b5421b4 AL	119
	120	// Spawn the subprocess
	121	if (Process == 0)
	122	{
	123	// Setup the FDs
	124	dup2(Pipes[1],STDOUT_FILENO);
	125	dup2(Pipes[2],STDIN_FILENO);
	126	dup2(((filebuf *)clog.rdbuf())->fd(),STDERR_FILENO);
3b5421b4 AL	127	SetCloseExec(STDOUT_FILENO,false);
	128	SetCloseExec(STDIN_FILENO,false);
	129	SetCloseExec(STDERR_FILENO,false);
	130
	131	const char *Args[2];
	132	Args[0] = Method.c_str();
	133	Args[1] = 0;
	134	execv(Args[0],(char **)Args);
	135	cerr << "Failed to exec method " << Args[0] << endl;
0dbb95d8	136	_exit(100);
3b5421b4 AL	137	}
	138
	139	// Fix up our FDs
	140	InFd = Pipes[0];
	141	OutFd = Pipes[3];
	142	SetNonBlock(Pipes[0],true);
	143	SetNonBlock(Pipes[3],true);
	144	close(Pipes[1]);
	145	close(Pipes[2]);
0a8a80e5 AL	146	OutReady = false;
0a8a80e5 AL	147	InReady = true;
3b5421b4 AL	148
	149	// Read the configuration data
	150	if (WaitFd(InFd) == false \|\|
	151	ReadMessages() == false)
	152	return _error->Error("Method %s did not start correctly",Method.c_str());
	153
	154	RunMessages();
8b89e57f AL	155	if (OwnerQ != 0)
8b89e57f AL	156	SendConfiguration();
3b5421b4 AL	157
	158	return true;
	159	}
	160	/}}}/
	161	// Worker::ReadMessages - Read all pending messages into the list /{{{/
	162	// ---------------------------------------------------------------------
0a8a80e5	163	/* */
3b5421b4 AL	164	bool pkgAcquire::Worker::ReadMessages()
3b5421b4 AL	165	{
0a8a80e5 AL	166	if (::ReadMessages(InFd,MessageQueue) == false)
0a8a80e5 AL	167	return MethodFailure();
3b5421b4 AL	168	return true;
	169	}
	170	/}}}/
3b5421b4 AL	171	// Worker::RunMessage - Empty the message queue /{{{/
	172	// ---------------------------------------------------------------------
	173	/* This takes the messages from the message queue and runs them through
	174	the parsers in order. */
	175	bool pkgAcquire::Worker::RunMessages()
	176	{
	177	while (MessageQueue.empty() == false)
	178	{
	179	string Message = MessageQueue.front();
	180	MessageQueue.erase(MessageQueue.begin());
0a8a80e5 AL	181
	182	if (Debug == true)
	183	clog << " <- " << Access << ':' << QuoteString(Message,"\n") << endl;
3b5421b4 AL	184
	185	// Fetch the message number
	186	char *End;
	187	int Number = strtol(Message.c_str(),&End,10);
	188	if (End == Message.c_str())
	189	return _error->Error("Invalid message from method %s: %s",Access.c_str(),Message.c_str());
	190
c88edf1d AL	191	string URI = LookupTag(Message,"URI");
	192	pkgAcquire::Queue::QItem *Itm = 0;
	193	if (URI.empty() == false)
	194	Itm = OwnerQ->FindItem(URI,this);
bfd22fc0	195
3b5421b4 AL	196	// Determine the message number and dispatch
	197	switch (Number)
	198	{
0a8a80e5	199	// 100 Capabilities
3b5421b4 AL	200	case 100:
	201	if (Capabilities(Message) == false)
	202	return _error->Error("Unable to process Capabilities message from %s",Access.c_str());
	203	break;
0a8a80e5 AL	204
	205	// 101 Log
	206	case 101:
	207	if (Debug == true)
	208	clog << " <- (log) " << LookupTag(Message,"Message") << endl;
	209	break;
	210
	211	// 102 Status
	212	case 102:
	213	Status = LookupTag(Message,"Message");
	214	break;
	215
	216	// 200 URI Start
	217	case 200:
c88edf1d AL	218	{
	219	if (Itm == 0)
	220	{
93bf083d	221	_error->Error("Method gave invalid 200 URI Start message");
c88edf1d AL	222	break;
c88edf1d AL	223	}
8267fe24	224
c88edf1d AL	225	CurrentItem = Itm;
	226	CurrentSize = 0;
	227	TotalSize = atoi(LookupTag(Message,"Size","0").c_str());
8b75eb1c	228	ResumePoint = atoi(LookupTag(Message,"Resume-Point","0").c_str());
8267fe24	229	Itm->Owner->Start(Message,atoi(LookupTag(Message,"Size","0").c_str()));
8b75eb1c	230
8267fe24 AL	231	if (Log != 0)
	232	Log->Fetch(*Itm);
	233
c88edf1d AL	234	break;
c88edf1d AL	235	}
0a8a80e5 AL	236
	237	// 201 URI Done
	238	case 201:
c88edf1d AL	239	{
	240	if (Itm == 0)
	241	{
93bf083d	242	_error->Error("Method gave invalid 201 URI Done message");
c88edf1d AL	243	break;
	244	}
	245
bfd22fc0	246	pkgAcquire::Item *Owner = Itm->Owner;
8267fe24	247	pkgAcquire::ItemDesc Desc = *Itm;
be4401bf	248	OwnerQ->ItemDone(Itm);
bfd22fc0	249	Owner->Done(Message,atoi(LookupTag(Message,"Size","0").c_str()),
c88edf1d	250	LookupTag(Message,"MD5-Hash"));
8267fe24 AL	251	ItemDone();
	252
	253	// Log that we are done
	254	if (Log != 0)
	255	{
	256	if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true \|\|
	257	StringToBool(LookupTag(Message,"Alt-IMS-Hit"),false) == true)
c46824ce AL	258	{
	259	/* Hide 'hits' for local only sources - we also manage to
	260	hide gets */
	261	if (Config->LocalOnly == false)
	262	Log->IMSHit(Desc);
	263	}
8267fe24 AL	264	else
	265	Log->Done(Desc);
	266	}
c88edf1d AL	267	break;
c88edf1d AL	268	}
0a8a80e5 AL	269
	270	// 400 URI Failure
	271	case 400:
c88edf1d AL	272	{
	273	if (Itm == 0)
	274	{
93bf083d	275	_error->Error("Method gave invalid 400 URI Failure message");
c88edf1d AL	276	break;
	277	}
	278
bfd22fc0	279	pkgAcquire::Item *Owner = Itm->Owner;
8267fe24	280	pkgAcquire::ItemDesc Desc = *Itm;
c88edf1d	281	OwnerQ->ItemDone(Itm);
7d8afa39	282	Owner->Failed(Message,Config);
8267fe24	283	ItemDone();
7d8afa39	284
8267fe24 AL	285	if (Log != 0)
8267fe24 AL	286	Log->Fail(Desc);
7d8afa39	287
c88edf1d AL	288	break;
c88edf1d AL	289	}
0a8a80e5 AL	290
	291	// 401 General Failure
	292	case 401:
	293	_error->Error("Method %s General failure: %s",LookupTag(Message,"Message").c_str());
	294	break;
542ec555 AL	295
	296	// 403 Media Change
	297	case 403:
	298	MediaChange(Message);
	299	break;
3b5421b4 AL	300	}
	301	}
	302	return true;
	303	}
	304	/}}}/
	305	// Worker::Capabilities - 100 Capabilities handler /{{{/
	306	// ---------------------------------------------------------------------
	307	/* This parses the capabilities message and dumps it into the configuration
	308	structure. */
	309	bool pkgAcquire::Worker::Capabilities(string Message)
	310	{
	311	if (Config == 0)
	312	return true;
	313
	314	Config->Version = LookupTag(Message,"Version");
	315	Config->SingleInstance = StringToBool(LookupTag(Message,"Single-Instance"),false);
0a8a80e5 AL	316	Config->Pipeline = StringToBool(LookupTag(Message,"Pipeline"),false);
0a8a80e5 AL	317	Config->SendConfig = StringToBool(LookupTag(Message,"Send-Config"),false);
e331f6ed	318	Config->LocalOnly = StringToBool(LookupTag(Message,"Local-Only"),false);
3b5421b4 AL	319
	320	// Some debug text
	321	if (Debug == true)
	322	{
	323	clog << "Configured access method " << Config->Access << endl;
0a8a80e5	324	clog << "Version:" << Config->Version << " SingleInstance:" <<
a72ace20	325	Config->SingleInstance <<
0a8a80e5 AL	326	" Pipeline:" << Config->Pipeline << " SendConfig:" <<
0a8a80e5 AL	327	Config->SendConfig << endl;
3b5421b4 AL	328	}
3b5421b4 AL	329
542ec555 AL	330	return true;
	331	}
	332	/}}}/
	333	// Worker::MediaChange - Request a media change /{{{/
	334	// ---------------------------------------------------------------------
	335	/* */
	336	bool pkgAcquire::Worker::MediaChange(string Message)
	337	{
	338	if (Log == 0 \|\| Log->MediaChange(LookupTag(Message,"Media"),
	339	LookupTag(Message,"Drive")) == false)
	340	{
	341	char S[300];
	342	sprintf(S,"603 Media Changed\nFailed: true\n\n");
	343	if (Debug == true)
	344	clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
	345	OutQueue += S;
	346	OutReady = true;
	347	return true;
	348	}
	349
	350	char S[300];
	351	sprintf(S,"603 Media Changed\n\n");
	352	if (Debug == true)
	353	clog << " -> " << Access << ':' << QuoteString(S,"\n") << endl;
	354	OutQueue += S;
	355	OutReady = true;
3b5421b4 AL	356	return true;
3b5421b4 AL	357	}
0118833a	358	/}}}/
0a8a80e5 AL	359	// Worker::SendConfiguration - Send the config to the method /{{{/
	360	// ---------------------------------------------------------------------
	361	/* */
	362	bool pkgAcquire::Worker::SendConfiguration()
	363	{
	364	if (Config->SendConfig == false)
	365	return true;
	366
	367	if (OutFd == -1)
	368	return false;
	369
	370	string Message = "601 Configuration\n";
	371	Message.reserve(2000);
	372
	373	/* Write out all of the configuration directives by walking the
	374	configuration tree */
	375	const Configuration::Item *Top = _config->Tree(0);
	376	for (; Top != 0;)
	377	{
	378	if (Top->Value.empty() == false)
	379	{
	380	string Line = "Config-Item: " + Top->FullTag() + "=";
	381	Line += QuoteString(Top->Value,"\n") + '\n';
	382	Message += Line;
	383	}
	384
	385	if (Top->Child != 0)
	386	{
	387	Top = Top->Child;
	388	continue;
	389	}
	390
	391	while (Top != 0 && Top->Next == 0)
	392	Top = Top->Parent;
	393	if (Top != 0)
	394	Top = Top->Next;
	395	}
	396	Message += '\n';
	397
	398	if (Debug == true)
	399	clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
	400	OutQueue += Message;
	401	OutReady = true;
	402
	403	return true;
	404	}
	405	/}}}/
	406	// Worker::QueueItem - Add an item to the outbound queue /{{{/
	407	// ---------------------------------------------------------------------
	408	/* Send a URI Acquire message to the method */
	409	bool pkgAcquire::Worker::QueueItem(pkgAcquire::Queue::QItem *Item)
	410	{
	411	if (OutFd == -1)
	412	return false;
	413
	414	string Message = "600 URI Acquire\n";
	415	Message.reserve(300);
	416	Message += "URI: " + Item->URI;
	417	Message += "\nFilename: " + Item->Owner->DestFile;
	418	Message += Item->Owner->Custom600Headers();
	419	Message += "\n\n";
	420
	421	if (Debug == true)
	422	clog << " -> " << Access << ':' << QuoteString(Message,"\n") << endl;
423	OutQueue += Message;
424	OutReady = true;
425
426	return true;
427	}
428	/}}}/
429	// Worker::OutFdRead - Out bound FD is ready /{{{/
430	// ---------------------------------------------------------------------
431	/* */
432	bool pkgAcquire::Worker::OutFdReady()
433	{
b0db36b1 AL	434	int Res;
	435	do
	436	{
	437	Res = write(OutFd,OutQueue.begin(),OutQueue.length());
	438	}
	439	while (Res < 0 && errno == EINTR);
	440
0a8a80e5 AL	441	if (Res <= 0)
	442	return MethodFailure();
	443
	444	// Hmm.. this should never happen.
	445	if (Res < 0)
	446	return true;
	447
	448	OutQueue.erase(0,Res);
	449	if (OutQueue.empty() == true)
	450	OutReady = false;
	451
	452	return true;
	453	}
	454	/}}}/
	455	// Worker::InFdRead - In bound FD is ready /{{{/
	456	// ---------------------------------------------------------------------
	457	/* */
	458	bool pkgAcquire::Worker::InFdReady()
	459	{
	460	if (ReadMessages() == false)
	461	return false;
	462	RunMessages();
	463	return true;
	464	}
	465	/}}}/
	466	// Worker::MethodFailure - Called when the method fails /{{{/
	467	// ---------------------------------------------------------------------
	468	/* This is called when the method is belived to have failed, probably because
	469	read returned -1. */
	470	bool pkgAcquire::Worker::MethodFailure()
	471	{
76d97c26 AL	472	_error->Error("Method %s has died unexpectedly!",Access.c_str());
76d97c26 AL	473
0a8a80e5 AL	474	if (waitpid(Process,0,0) != Process)
	475	_error->Warning("I waited but nothing was there!");
	476	Process = -1;
	477	close(InFd);
	478	close(OutFd);
	479	InFd = -1;
	480	OutFd = -1;
	481	OutReady = false;
	482	InReady = false;
	483	OutQueue = string();
	484	MessageQueue.erase(MessageQueue.begin(),MessageQueue.end());
	485
	486	return false;
	487	}
	488	/}}}/
8267fe24 AL	489	// Worker::Pulse - Called periodically /{{{/
	490	// ---------------------------------------------------------------------
	491	/* */
	492	void pkgAcquire::Worker::Pulse()
	493	{
	494	if (CurrentItem == 0)
	495	return;
542ec555	496
8267fe24 AL	497	struct stat Buf;
	498	if (stat(CurrentItem->Owner->DestFile.c_str(),&Buf) != 0)
	499	return;
	500	CurrentSize = Buf.st_size;
	501	}
	502	/}}}/
	503	// Worker::ItemDone - Called when the current item is finished /{{{/
	504	// ---------------------------------------------------------------------
	505	/* */
	506	void pkgAcquire::Worker::ItemDone()
	507	{
	508	CurrentItem = 0;
	509	CurrentSize = 0;
	510	TotalSize = 0;
	511	Status = string();
	512	}
	513	/}}}/